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Memfault SDK for embedded systems. Observability, logging, crash reporting, and OTA all in one service
# Memfault Firmware SDK Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to
[Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [1.15.0] - 2024-10-13
### π Added
- General:
- **EXPERIMENTAL**: Metrics Sessions now include a built-in metric for the
[Stable Sessions Device Vital](https://docs.memfault.com/docs/platform/memfault-core-metrics#stable-sessions)
(`session.operational_crashes`) which tracks crashes that occurred when a
session is active.
### π οΈ Changed
- General:
- Minor changes to support compiling with GCC ARM v4.9.3.
### π Fixed
- Corrected a spelling error, renamed
<!-- spellchecker:off -->
`MEMFAULT_METRIS_KEY_DEFINE_WITH_SESSION_AND_SCALE_VALUE()` to
<!-- spellchecker:on -->
`MEMFAULT_METRICS_KEY_DEFINE_WITH_SESSION_AND_SCALE_VALUE()`
## [1.14.0] - 2024-10-09
### π Added
- ESP-IDF:
- The Memfault port will now disable the `IWDT` (Interrupt Watchdog Timer)
before starting coredump saving, to prevent interrupting the coredump
process. The ESP-IDF fault handler enables the `WDT_RWDT` hardware watchdog
when a fault occurs, so there is still protection if the fault handling
hangs.
## [1.13.0] - 2024-10-07
### π Added
- FreeRTOS:
- The SDK now has a config to control whether to split CPU usage per core when
building for a multi-core device. Enable this setting by adding
`#define MEMFAULT_FREERTOS_RUNTIME_STATS_MULTI_CORE_SPLIT 1` to
`memfault_platform_config.h`. This setting is disabled by default.
- ESP-IDF:
- Added a Kconfig, `CONFIG_MEMFAULT_FREERTOS_RUNTIME_STATS_MULTI_CORE_SPLIT`,
to control `MEMFAULT_FREERTOS_RUNTIME_STATS_MULTI_CORE_SPLIT`. This Kconfig
is enabled by default for multi-core devices.
### π οΈ Changed
- FreeRTOS:
- Changed previous idle task run time percent metrics to measure CPU usage
(i.e. the complement of the idle task run time)
- Renamed the following metrics:
- Single-Core + Multi-Core Default:
- `idle_task_run_time_percent` -> `cpu_usage_pct`
- Multi-Core Split:
- `idle0_task_run_time_percent` -> `cpu_usage_pct`
- `idle1_task_run_time_percent` -> `cpu1_usage_pct`
- ESP-IDF:
- Unknown or unclassified reboot reason codes returned by `get_reset_reason()`
are now correctly recorded as `kMfltRebootReason_Unknown` instead of
`kMfltRebootReason_UnknownError` (`UnknownError` is reserved for an
"unexpected" reboot path, where `Unknown` is used when the reboot reason
cannot be determined).
### π© Deprecated
Support for the following vendor platform versions is deprecated in this
release, and will be removed in a future release:
- ESP-IDF < `v4.4` (Jan 26, 2022)
- Zephyr < `v2.7.0` (Oct 16, 2021)
- nRF-Connect SDK < `v1.9.2` (Jul 14, 2022)
Please [contact us](https://mflt.io/contact-support) if you need support for
earlier versions!
## [1.12.0] - 2024-09-25
### π Added
- ESP-IDF:
- The SDK now supports being installed as an
[ESP Component](https://components.espressif.com/) from the Espressif
registry, by adding the following lines to an esp-idf project's
`idf_component.yml` manifest:
```yaml
dependencies:
memfault/memfault-firmware-sdk:
version: "1.12.0"
```
- [Heap Allocation Tracking](https://docs.memfault.com/docs/mcu/heap-stats) is
now enabled by default for ESP-IDF projects, controlled with the Kconfig
symbol `CONFIG_MEMFAULT_HEAP_STATS`. The Memfault Trace UI will show
information about the most recent heap allocations for `malloc()` calls.
### π οΈ Changed
- ESP-IDF:
- The [Memfault Build ID](https://mflt.io/symbol-file-build-ids) will be
applied by default, controlled by the Kconfig setting
`CONFIG_MEMFAULT_USE_MEMFAULT_BUILD_ID`. This is _only_ valid for ESP-IDF
versions >= **4.2.5** , and will cause a build error on older versions,
requiring it to be set to `n`. Updating to this version of the SDK will
**require** removing the similar logic in the project's `CMakeLists.txt`
file (a build error will occur if both are present).
- The Memfault Core Vital for
[Periodic Connectivity](https://docs.memfault.com/docs/platform/memfault-core-metrics#periodic-connectivity)
will now count failures to sync Memfault data if the HTTP connection cannot
be established, but WiFi connectivity is available. This can occur when the
WAN connection is down but the access point is still up, or if there is an
external DNS failure. Previously this was not counted as a failure.
- Zephyr
- The Memfault HTTP client, enabled with Kconfig
`CONFIG_MEMFAULT_HTTP_ENABLE`, requires `POSIX_API` to be enabled on newer
versions of Zephyr. Previously, not explicitly enabling `POSIX_API` would
result in a build error. Update it to be enabled by default in the Zephyr
SDK, via Kconfig `imply POSIX_API`.
- Zephyr 3.7.0+ requires enabling `CONFIG_MBEDTLS_SHA1` when using Zephyr's
mbedtls implementation. Memfault added a build-time check for this setting
in Memfault SDK 1.11.2, but that check would also trip when not using
Zephyr's mbedtls implementation. Update the build check to be more precise.
- nRF-Connect SDK:
- Minor changes to provide compatibility with NCS versions > 2.7.0, which
target a Zephyr fork that is compatible with 3.7.0 but provides a
"development" version number, 3.6.99.
### π Fixed
- ESP-IDF:
- Corrected a theoretical integer overflow issue in the demo CLI `crash`
command, detected by static analysis tools. The impacted function was and is
exclusively called with an argument of `10`, so this issue was not
exploitable in practice.
## [1.11.5] - 2024-09-18
### π Added
- General:
- Add two new core metrics, `MemfaultSdkMetric_os_name` and
`MemfaultSdkMetric_os_version`. These are string metrics that map to the OS
/ platform name and version string respectively, and are included in the the
ELF at build time, and processed out-of-band by Memfault for NCS, Zephyr,
and ESP-IDF. They **are not** ever transmitted over the air (no bandwidth
impact). For example, for Zephyr these metric string values would be
`zephyr` and `3.7.0` for a project on Zephyr v3.7.0. These metrics are
attributes by default and will not be counted towards attribute quotas.
- Zephyr:
- Add the following built-in WiFi metrics for Zephyr devices, enabled by
default on systems with WiFi:
- `wifi_connected_time_ms` : time in milliseconds the device has been
connected to a WiFi network
- `wifi_disconnect_count` : number of times the device has disconnected from
a WiFi network
- `wifi_ap_oui` : the OUI of the WiFi AP the device is connected to
The metrics can be disabled by setting `CONFIG_MEMFAULT_METRICS_WIFI=n`.
- The Memfault Zephyr fault handler now labels faults as Stack Overflow, Bus
Fault, MemManage Fault, and Usage Fault, among others, in addition to the
existing Hard Fault label. Note that this does not change the types of
faults collected (all these faults are already supported), but it does
correct the label presented in the Memfault UI.
- Add a new test command, `mflt test stack_overflow`, that will trigger a
stack overflow fault when `CONFIG_STACK_SENTINEL` or
`CONFIG_MPU_STACK_GUARD` is enabled.
- The `cpu_temp` metric has been renamed to `thermal_cpu_c` to better reflect
the metric's purpose. The metric is still collected by default on platforms
with an enabled `die-temp0` sensor, and can be disabled by setting
`CONFIG_MEMFAULT_METRICS_CPU_TEMP=n`.
- Add a new metric, `memory_pct_max`, which captures the max percentage of the
heap used. It is enabled by default. This metric and the existing
`Heap_BytesFree` metric are controlled with
`CONFIG_MEMFAULT_METRICS_MEMORY_USAGE`.
- ESP-IDF:
- Add an option to upload logs by default when using
`MEMFAULT_HTTP_PERIODIC_UPLOAD`, controlled with the Kconfig symbol
`MEMFAULT_HTTP_PERIODIC_UPLOAD_LOGS`. This can also be controlled at runtime
with the included API
`memfault_esp_port_http_periodic_upload_logs(bool enable)`
- Add a new metric, `memory_pct_max`, which captures the max percentage of the
heap used. It is enabled by default. This metric and the existing `heap_*`
metrics are now controlled with `CONFIG_MEMFAULT_METRICS_MEMORY_USAGE`.
- Print the Memfault OTA URL from `memfault_esp_port_ota_update()` when a new
update is available, for example:
```bash
esp32> memfault_ota_check
I (98125) mflt: Checking for OTA Update
Download URL: https://ota-cdn.memfault.com/2950/9757/19036619757?token=0123456789abcdef&expires=1726192800&v=2
I (98775) mflt: Update available!
esp32> memfault_ota_perform
I (15515) mflt: Checking for OTA Update
Download URL: https://ota-cdn.memfault.com/2950/9757/19036619757?token=0123456789abcdef&expires=1726192800&v=2
I (16205) mflt: Starting OTA download ...
```
### π οΈ Changed
- Zephyr:
- The `cpu_temp` metric has been renamed to `thermal_cpu_c` to better reflect
the metric's purpose. The metric is still collected by default on platforms
with an enabled `die-temp0` sensor, and can be disabled by setting
`CONFIG_MEMFAULT_METRICS_CPU_TEMP=n`.
- ESP-IDF:
- The `cpu_temp` metric has been renamed to `thermal_cpu_c` to better reflect
the metric's purpose. The metric is still collected by default on ESP32
variants that support it (all but ESP32), and can be disabled by setting
`CONFIG_MEMFAULT_METRICS_CPU_TEMP=n`.
- The Kconfig `CONFIG_MEMFAULT_ESP_HEAP_METRICS` has been replaced with
`CONFIG_MEMFAULT_METRICS_MEMORY_USAGE`.
## [1.11.4] - 2024-09-10
### π Improvements
- ESP-IDF:
- Fix a minor issue where MEMFAULT_LOG_x() macros (MEMFAULT_LOG_ERROR() etc )
would be recorded twice in the log buffer.
- General:
- Fix an error in the unit test CI build due to the addition of the
`-Wc11-c2x-compat` compiler warning flag. This flag is not valid for the C++
compiler, and has been changed to be enabled only for the C compiler.
- nRF-Connect SDK:
- Fix a possible stack overflow when tracking the Memfault Connectivity
Connected Time Vital for the nRF9160 LTE connection, due to a change in the
nRF-Connect SDK v2.7.0 from prior versions.
## [1.11.3] - 2024-09-05
### π Improvements
- General:
- Improve assert stack unwinding for Clang builds when `-flto` is enabled.
- Zephyr:
- Add a new Kconfig option, `CONFIG_MEMFAULT_SOC_FAMILY_ESP32`, to resolve an
error when referencing the deprecated `CONFIG_SOC_FAMILY_ESP32` Kconfig
(removed in
[Zephyr 3.7.0](https://github.com/zephyrproject-rtos/zephyr/commit/8dc3f856229ce083c956aa301c31a23e65bd8cd8)
as part of Hardware Model V2). This new option is used in the Memfault
Zephyr port to check if an ESP32 SOC is being used.
- Remove references to the deprecated `BOOTLOADER_ESP_IDF` Kconfig symbol in
the Memfault Zephyr port (removed in Zephyr 3.7.0).
## [1.11.2] - 2024-08-29
### π Improvements
- nRF-Connect SDK:
- Add support for the following reboot reasons on nRF series SOCs. These
reboot reasons are tracked as `kMfltRebootReason_DeepSleep`.
- `NRF_POWER_RESETREAS_OFF_MASK`
- `NRF_POWER_RESETREAS_NFC_MASK`
- `NRF_POWER_RESETREAS_CTRLAP_MASK`
- Zephyr:
- Use `MEMFAULT_ASSERT_HALT_IF_DEBUGGING_ENABLED` to control whether coredumps
trigger a halt when a debugger is attached.
- Add a new Kconfig option, `CONFIG_MEMFAULT_RAM_BACKED_COREDUMP_REGION`, to
set the RAM region used for storing RAM-backed coredumps.
- Fix a π when trying to communicate via HTTPS with Memfault on the nRF91x.
On the nRF91x, socket operations are offloaded to the nRF modem lib, which
does not currently support the socket option `TLS_CERT_NO_COPY`. In v1.9.4,
this socket option was applied when TLS was enabled
(`!g_mflt_http_client_config.disable_tls`) and Zephyr version was >=3.0.0
(when support for this socket option was added). Therefore, devices on SDK
versions >=1.9.4 and <1.11.2 trying to communicate with Memfault will run
into a no protocol support error (`ENOPROTOOPT`) in the nRF modem lib. Since
this option is only required to use the DER format,
`CONFIG_MEMFAULT_TLS_CERTS_USE_DER` now depends on the Zephyr-implemented
socket operations being used (`!NET_SOCKET_OFFLOAD`).
- Fix the build when using Zephyr 3.7.0 and leveraging the HTTP client and/or
ESP32 port. The Memfault HTTP client would fail to build due to the wrong
`crypto.h` header getting picked up in the build. Additionally, due to the
[removal of default support for mbedTLS hash algorithms in Zephyr](https://docs.zephyrproject.org/latest/releases/migration-guide-3.7.html#mbed-tls),
`CONFIG_MBEDTLS_SHA1` now must be enabled explicitly when using any of
Memfault's CA certificates. When using PEM and leveraging Zephyr's in-tree
mbedTLS and config file
(`CONFIG_MBEDTLS_BUILTIN=y && CONFIG_MBEDTLS_CFG_FILE="config-tls-generic.h"`),
`CONFIG_MBEDTLS_PEM_CERTIFICATE_FORMAT=y` is required for PEM certificate
support. To simplify certificate format selection, a new choice Kconfig
called `CONFIG_MEMFAULT_TLS_CERTS_FORMAT` has been added. Use the configs
`CONFIG_MEMFAULT_TLS_CERTS_USE_PEM` and `CONFIG_MEMFAULT_TLS_CERTS_USE_DER`
to choose the certificate format.`CONFIG_MEMFAULT_TLS_CERTS_USE_DER` is the
default choice config. Finally, the Kconfig `CONFIG_SOC_FAMILY_ESP32` is now
deprecated. References of this Kconfig now also check the new Kconfig
`CONFIG_SOC_FAMILY_ESPRESSIF_ESP32`. See
[Zephyr's 3.7 Migration guide](https://docs.zephyrproject.org/latest/releases/migration-guide-3.7.html)
for more details.
- Dialog
- Add support to the existing DA145xx port for the DA14535 by adding the
correct memory region for `memfault_platform_sanitize_address_range()`.
- Fix several πs in `memfault_reboot_reason_get()` and
`memfault_platform_reboot()` implementations in the DA146x port. In
`memfault_reboot_reason_get()`, the bit masks were incorrectly applied and a
block was missing to reset the reboot reason register if
`MEMFAULT_REBOOT_REASON_CLEAR` is set. In `memfault_platform_reboot()`, the
mechanism to reboot the system has been updated from
`hw_cpm_reboot_system()` to `SWRESET`.
## [1.11.1] - 2024-08-12
### π Improvements
- General:
- Add additional stubs to `ports/templates/memfault_platform_port.c` to help
when integrating on a new platform
- ESP-IDF:
- Trigger a null dereference crash when the `BOOT` button is pressed on the
ESP32 example app. This is useful for testing the Memfault crash handling
functionality without using the serial console.
## [1.11.0] - 2024-08-07
### π₯ Breaking Changes
- Add support for namespacing
[Session Metrics](https://docs.memfault.com/docs/mcu/metrics-api#session-metrics)
to support duplicate key names across heartbeats and sessions (eg
`heartbeat.cpu_temp` and `session.cpu_temp`). This requires a change to how
Session Metrics keys are set:
- Before: `MEMFAULT_METRIC_SET_SIGNED(cpu_temp, 25)` (only 1 metric key
`cpu_temp` supported across heartbeats/sessions)
- After:
- `MEMFAULT_METRIC_SET_SIGNED(cpu_temp, 25)` for setting
`heartbeat.cpu_temp`
- `MEMFAULT_METRIC_SESSION_SET_SIGNED(cpu_temp, session, 25)` for setting
`session.cpu_temp`
### π Improvements
- General:
- Fix a π in reboot tracking classification when calling
`memfault_reboot_tracking_boot()` with a `bootup_info` parameter containing
an unexpected type of reboot reason (or no reboot reason) after a previously
recorded expected reason. This results in
["Expected Reboots"](components/include/memfault/core/reboot_reason_types.h#L33)
recorded using `MEMFAULT_REBOOT_MARK_RESET_IMMINENT()` to be incorrectly
flagged as an "Unexpected Reboot" and causes an incorrect
`operational_crashfree_hours` metric getting reported and a lower Stability
score.
- Cleanup comment to old packetizer API
- Add `-fdebug-prefix-map` to FreeRTOS QEMU example
- ESP-IDF:
- Improved the CLI results when running the `post_chunks` test command (used
to trigger an upload to Memfault) to be more informative, for example:
```bash
esp32> post_chunks
I (12593) mflt: Data posted successfully, 262285 bytes sent
esp32> post_chunks
I (204093) mflt: No new data found
```
- Zephyr
- Update samples to use the newly-released Zephyr v3.7.0 π₯³
- Add explanatory output to Memfault `test busfault|hardfault` shell commands
when Trusted Firmware-M (TF-M) is in use
- The RTC-based implementation of
[`memfault_platform_time_get_current()`](ports/zephyr/common/memfault_platform_system_time.c)
used a define named `RTC`, which conflicts with the STM32 HAL definition
[here](https://github.com/zephyrproject-rtos/hal_stm32/blob/f1317150eac951fdd8259337a47cbbc4c2e6d335/stm32cube/stm32h7xx/soc/stm32h7b3xxq.h#L2441-L2442).
Rename the define to `MFLT_RTC_NODE` to avoid the conflict.
- nRF-Connect SDK:
- Fix a compilation error when building NCS v2.7.0 with the latest Memfault
firmware SDK (v1.10.1, the previous SDK release).
## [1.10.1] - 2024-07-24
### π Improvements
- General:
- Removed a warning when compiling the SDK for Cortex-A targets (ARM v7a).
Support for this target is no longer experimental.
- Improve coredump capture on ARMv7-A/R (Cortex-A/R), capturing additional CPU
registers `r8` + `r9` in the coredump.
- Fix a compilation issue with older versions of `gcc-arm-none-eabi` that do
not support the `PRIu64` format specifier (or are missing C99 format
specifiers). Thanks to @iotengtr for reporting this issue in
[#72](https://github.com/memfault/memfault-firmware-sdk/issues/72) !
- Zephyr:
- Include the Zephyr Device Tree output in the ELF file in a debug section,
which can be used for reference. Memfault is exploring other use cases for
this data in our backend. This feature is controlled with
`CONFIG_MEMFAULT_DTS_IN_ELF`, enabled by default.
## [1.10.0] - 2024-07-12
### π Improvements
- Zephyr:
- Add support for Memfault Logging when `CONFIG_LOG_MODE_MINIMAL=y`, in
addition to the previously supported `LOG_MODE_DEFERRED` (Zephyr default)
and `LOG_MODE_IMMEDIATE`.
[Zephyr minimal log mode](https://docs.zephyrproject.org/3.6.0/kconfig.html#CONFIG_LOG_MODE_MINIMAL)
disables all backends- logs are simply sent to `printk`.
- For ESP32 chips, place the reboot reason tracking into a dedicated section,
`.rtc_noinit`, to ensure the reboot reason is preserved across reboots. This
was previously only supported on Zephyr ESP32-S3/S2 devices (all ESP32
devices on ESP-IDF already support this).
- Fix a bug where the default `memfault_platform_get_device_info()`, which
uses the hwinfo subsystem, when available, was incorrectly disabled when
`CONFIG_MEMFAULT_REBOOT_REASON_GET_CUSTOM=y`.
- General:
- Improve the `memfault_demo_cli_cmd_busfault()` function (accessed via
`test_busfault`/`mflt test busfault` demo CLI commands) to produce BusFaults
on more devices. Previously, certain chips would either not produce a fault,
or would produce a MemManage exception instead.
## [1.9.4] - 2024-07-01
### π Improvements
- Zephyr:
- Updated the Memfault fault handler to support deprecated exception info
structure coming in Zephyr v3.7.0. This change is backward compatible with
older Zephyr versions.
- By default, include the `zephyr.meta` build metadata in the output ELF file
as an unallocated section. This provides a list of module SHAs, useful when
reconstructing the dependencies used to build a particular ELF file. This
feature is controlled with `CONFIG_MEMFAULT_BUILD_META_IN_ELF`.
- Add a new Kconfig option, `CONFIG_MEMFAULT_USE_MEMFAULT_BUILD_ID`, which
will apply a [Memfault Build ID](https://mflt.io/symbol-file-build-ids)
instead of a GNU Build ID when enabled. It defaults to enabled when
`CONFIG_BOOTLOADER_ESP_IDF` is enabled- this applies to ESP32 boards that
are using the ESP-IDF bootloader, instead of an MCUBoot bootloader. MCUBoot
bootable images are compatible with the standard GNU Build IDs.
- Add a new API, `memfault_zephyr_fota_download_callback()`, to the Zephyr
FOTA implementation to allow users to write their own callback that is
invoked when the download of a OTA payload is complete. The default download
callback will mark the new image as pending, set a firmware update reboot
reason, and reboot the system. Custom callbacks may, for example, be used to
perform application-specific system shutdown procedures, or allow the FOTA
update call to return to the calling context so a testing framework could
mark the operation successful. Users can override the default callback with
their own implementation using a new Kconfig option
`CONFIG_MEMFAULT_ZEPHYR_FOTA_DOWNLOAD_CALLBACK_CUSTOM`.
- ESP-IDF:
- Add a periodic HTTP upload task. This feature starts a task dedicated to
posting any available Memfault data via HTTPS. Enable with
`CONFIG_MEMFAULT_HTTP_PERIODIC_UPLOAD=y`.
- General:
- Add 2 new QEMU targets for the FreeRTOS QEMU example, for Cortex-M4F and
Cortex-M33. The targets can be found [here](examples/freertos/boards/)
## [1.9.3] - 2024-06-10
### π Improvements
- ESP-IDF:
- The default Device Info Software Version (Kconfig
`CONFIG_MEMFAULT_DEVICE_INFO_SOFTWARE_VERSION`) has been updated to `0.0.0`
from `1.0.0-dev` for the built-in Device Info implementation. See
`menuconfig` or
[`ports/esp_idf/memfault/Kconfig`](ports/esp_idf/memfault/Kconfig) for
details. This should only affect users who are using the default value for
that Kconfig.
- Fix a bug when `CONFIG_MEMFAULT_LWIP_METRICS=y` that may cause invalid
metric values. LwIP stats by default are only 16-bits wide and this can
cause underflow when calculating heartbeat values. This fix forces
`LWIP_STATS_LARGE=1` to make LwIP use 32-bit counters.
- Add a feature to the [esp32 example app](examples/esp32) to enable
overriding the Memfault server URLs (ex: for a proxy).
- Improve docs and comments in example app
- General:
- Updated the default exception handler name for Memory Management exceptions
from `MemoryManagement_Handler` to `MemManage_Handler` (set by
`MEMFAULT_EXC_HANDLER_MEMORY_MANAGEMENT` in
[`default_config.h`](components/include/memfault/default_config.h) when not
overridden by the user). This aligns with the more recent CMSIS naming
convention for exception handlers. A backwards-compatible implementation is
included to avoid breaking users relying on the previous default.
- Add [`libcurl`-based samples](examples/libcurl) for posting chunks to
Memfault and checking for latest OTA release.
## [1.9.2] - 2024-05-29
### π Improvements
- ESP-IDF:
- Fix CLI command, `memfault_ota_check`, to return 0 to the console component
when an update is available.
- Add the temperature metric `cpu_temp` which is measured using an internal
temperature sensor that many ESP32 boards have built-in. This metric is
collected by default with the Kconfig `CONFIG_MEMFAULT_METRICS_CPU_TEMP=y`.
- Enable recording vprintf data into the Memfault log buffer through a vprintf
hook. Users can call `memfault_esp_port_vprintf_log_hook()` from their
vprintf handler so they can use both their vprintf handler and record logs
into Memfault's log buffer. To use this feature, set
`CONFIG_MEMFAULT_LOG_USE_VPRINTF_HOOK=n`.
- Zephyr:
- Fix a bug in `memfault_zephyr_port_post_data_return_size()` where a positive
value could be returned in the event of a failure instead of a negative
value. This would result in `mflt post_chunks` returning a successful post
message even though there was a failure such as a DNS lookup failure.
- Add the temperature metric `cpu_temp` which is measured using an internal
temperature sensor that some Zephyr boards have. Similar to ESP-IDF, this
metric is collected by default with the Kconfig
`CONFIG_MEMFAULT_METRICS_CPU_TEMP=y`, but the board must have the device
tree node `die-temp0` for this option to be used.
- Add an example for collecting thread stack usage metrics when the thread
handles are not accessible in the desired scope. Users can leverage the
Zephyr routine `k_thread_foreach()` to register a callback that will be
called with each thread's `k_thread` handle. In the callback, users can read
the stack usage via the handle and set their metrics.
### π₯ Breaking Changes
- Zephyr:
- Change the error return value for
`memfault_zephyr_port_http_upload_sdk_data()` to a negative value instead
of 1. This change aligns with the error return value for the other Zephyr
HTTP client APIs, and simplifies logic in the HTTP client.
### π Fixes
- ESP-IDF:
- Fix a case where `esp_http_client_cleanup()` was not called in certain
scenarios (for example, if the access point is connected, but there is no
outside internet access), which resulted in a memory leak. Thanks to
@mykmelez for providing the fix in
[#71](https://github.com/memfault/memfault-firmware-sdk/pull/71) π!
## [1.9.1] - 2024-05-21
### π Improvements
- ESP-IDF:
- Fix an issue with the Memfault ESP-IDF integration to support the newly
released ESP-IDF v5.1.4.
- Zephyr:
- Add support for tracking ESP32 reboots in `.rtc_noinit` section. This
improves tracking of the OTA [Reboot Reason](https://mflt.io/reboot-reasons)
when the device reboots after an OTA update.
- Fix compilation warnings when
`CONFIG_MEMFAULT_COREDUMP_FULL_THREAD_STACKS=y` is enabled. Thanks to @fouge
for providing this fix in
[#70](https://github.com/memfault/memfault-firmware-sdk/pull/70) π!
- General:
- Extend [`eclipse_patch.py`](scripts/eclipse_patch.py) to support adding the
Memfault SDK files to an STM32Cube IDE project.
## [1.9.0] - 2024-05-10
### π Improvements
- General:
- Correctly compile out the
[non-volatile event storage feature](https://docs.memfault.com/docs/mcu/metrics-api/#non-volatile-event-storage)
when `MEMFAULT_EVENT_STORAGE_NV_SUPPORT_ENABLED` is set to `0`. This feature
was previously not fully disabled, leaving some unused code in the final
executable. This is a minor code size improvement (approximately 300 bytes)
when the system is disabled (default).
- Zephyr:
- Improve support for
[event timestamps](https://docs.memfault.com/docs/mcu/event-timestamps)
using Zephyr RTC devices, by adding support for RTC nodes identified using
`DT_ALIAS()` in addition to `DT_NODELABEL()`. Thanks to @corytodd for
providing the fix in
[#68](https://github.com/memfault/memfault-firmware-sdk/issues/68)!
- Add a Memfault HTTP OTA client backend for Zephyr MCUBoot platforms. This is
enabled with the `CONFIG_MEMFAULT_ZEPHYR_FOTA_BACKEND_MCUBOOT` Kconfig flag.
The OTA process is triggered by calling the `memfault_zephyr_fota_start()`
function, which is also exposed in the shell via the
`mflt get_latest_release` command.
- Add basic support for Xtensa targets in the Memfault Zephyr port. This
specifically targets the ESP32-S3 SOC.
- Add a success message when the Zephyr HTTP client posts data to Memfault.
- ESP-IDF:
- Wrap calls to `esp_event_loop_create_default()` to prevent crashes if called
multiple times. This feature is enabled by default and is disabled with
`CONFIG_MEMFAULT_WRAP_EVENT_LOOP_CREATE_DEFAULT=n`
- Add an example
[Session Metric](https://docs.memfault.com/docs/mcu/metrics-api/#session-metrics)
to the [ESP32 example app](examples/esp32), which tracks statistics during
the ESP32 OTA session (bytes sent + received, etc).
- nRF Connect SDK:
- Enable periodic upload, `CONFIG_MEMFAULT_HTTP_PERIODIC_UPLOAD=y`, by default
for nRF91x builds
- Default to `CONFIG_MEMFAULT_HTTP_PERIODIC_UPLOAD_USE_DEDICATED_WORKQUEUE`
when periodic upload is enabled
- Improve the stability of the
[nRF9160 sample app](examples/nrf-connect-sdk/nrf9160), by increasing the
`CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE` to `2048`.
### π₯ Breaking Changes
- Zephyr:
- Add a built-in implementation of `g_mflt_http_client_config` for Zephyr
devices using the Memfault HTTP client, which holds the
[Memfault Project Key](https://mflt.io/project-key) set via the Kconfig
symbol `CONFIG_MEMFAULT_PROJECT_KEY`. Users updating from a previous version
will have to set this Kconfig symbol when building, and any existing
implementation of `g_mflt_http_client_config` should be removed.
## [1.8.1] - 2024-04-24
### π Improvements
- General:
- A new platform function, `memfault_platform_metrics_connectivity_boot()`,
can be enabled to be called from the Memfault SDK `metrics_boot()` function
after the metrics subsystem is initialized. This platform function is used
for setting any initial state information for Connectivity metrics, and has
default implementations for ESP-IDF (WiFi) and nRF9160 (LTE) devices.
- ESP-IDF:
- Add a new Kconfig setting,
`CONFIG_MEMFAULT_COREDUMP_STORAGE_WRITE_OFFSET_SECTORS`, which can be used
to set an offset into the coredump storage area where coredumps are written.
The full partition will still be erased, but coredumps will be written
starting at the sector offset selected with this setting. The skipped sector
will remain at the erased value, `0xff` for all bytes.
- Zephyr:
- Added a built-in weakly defined implementation of
`memfault_platform_get_device_info()`, which provides:
- `.device_serial` : A default device serial based on the SOC's unique ID
registers, via the
[`hwinfo` subsystem](https://docs.zephyrproject.org/3.6.0/hardware/peripherals/hwinfo.html).
This is the default device serial when `CONFIG_HWINFO=y`. If
`CONFIG_HWINFO=n`, the fallback device serial is
`CONFIG_SOC "-testserial"`.
- `.software_type` : Configurable with
`CONFIG_MEMFAULT_BUILTIN_DEVICE_INFO_SOFTWARE_TYPE`, defaults to `"app"`
- `.software_version` : Configurable with
`CONFIG_MEMFAULT_BUILTIN_DEVICE_INFO_SOFTWARE_VERSION`. Defaults to an
identifier based on the `VERSION` file in the application, using the
Zephyr
[Application Version](https://docs.zephyrproject.org/3.6.0/build/version/index.html)
feature, or `"0.0.0"` if unavailable.
- `.hardware_version` : Configurable with
`CONFIG_MEMFAULT_BUILTIN_DEVICE_INFO_HARDWARE_VERSION`. Defaults to an
identifier based on `CONFIG_BOARD` and `CONFIG_BOARD_REVISION` (if set).
- Add a new Zephyr example app for the
[ST NUCLEO-WBA55CG board](https://docs.zephyrproject.org/3.6.0/boards/st/nucleo_wba55cg/doc/nucleo_wba55cg.html),
under [`examples/zephyr/nucleo_wba55cg`](examples/zephyr/nucleo_wba55cg).
This example demonstrates the Memfault SDK integration on the NUCLEO-WBA55CG
board.
- nRF-Connect SDK:
- Add [Connected Time Vital](https://mflt.io/connectivity-metrics)
out-of-the-box for nRF9160 projects, tracking modem connected time. This is
controlled with the Kconfig
`CONFIG_MEMFAULT_NRF_CONNECTIVITY_CONNECTED_TIME_NRF91X`, enabled by
default.
## [1.8.0] - 2024-04-17
### π Improvements
- General:
- Scale values now fully supported. This metric metadata will scale down
metric values by the specified factor. Metrics with no specified scale value
will not be scaled
- Fix a π that would reset metric values after running a session start
callback. This prevented setting metrics at the start of a session.
- Zephyr:
- Add a metric using a scale value to our Zephyr QEMU example. This metric
measures CPU usage (in permille, 0.0-100.0%) of the main thread.
## [1.7.7] - 2024-04-15
- FreeRTOS:
- Add a compile time error when the
[`ports/freertos/config/memfault_metrics_heartbeat_freertos_config.def`](memfault_metrics_heartbeat_freertos_config.def)
file is not included from the user `memfault_metrics_heartbeat_config.def`
file. Compilation would fail previously with hard-to-follow errors due to
missing metrics definitions. This change makes the compilation error
explicit.
- ESP-IDF:
- Permit disabling the Memfault logging hook into `esp_log_set_vprintf()` (by
default this is enabled on system boot). Use
`CONFIG_MEMFAULT_LOG_USE_VPRINTF_HOOK=n` to disable the Memfault hook. Note
that this will disable capturing ESP-IDF logs in Memfault.
- Allow disabling the built-in Connectivity
[Core Metric](https://mflt.io/core-metrics?platform=MCU) collection, which
is enabled by default to track WiFi uptime. Use
`CONFIG_MEMFAULT_ESP_WIFI_CONNECTIVITY_TIME_METRICS=n` to disable the
built-in implementation.
- General:
- EXPERIMENTAL: Add the option to set a scale factor when defining a Metric.
The scale factor will in the future be used to divide the uploaded metric
values. For example, if a Metric is defined with a scale factor of `10`, all
values reported for that Metric will be divided by `10` when received by
Memfault. The resulting value is stored as a floating point number in
Memfault.
- Minor tweak to the [Eclipse patcher script](scripts/eclipse_patch.py) to
better handler folders with partially common path prefixes.
## [1.7.6] - 2024-04-03
### π Improvements
- ESP-IDF:
- Fix missing call to `memfault_boot()` in the
[ESP32 example app](examples/esp32) that was causing the device to not boot
correctly. This was a regression in v1.7.4.
- FreeRTOS:
- Add a built-in metric for tracking the FreeRTOS Timer Task stack bytes free,
`timer_task_stack_free_bytes`. This metric is enabled by default and can be
disabled by setting
`#define MEMFAULT_FREERTOS_COLLECT_TIMER_STACK_FREE_BYTES 0` in
`memfault_platform_config.h`.
## [1.7.5] - 2024-03-29
### π Improvements
- ESP-IDF:
- Modify a message when coredump storage is detected to be too small from an
error to a warning
- FreeRTOS:
- Fix an integer overflow issue affecting long heartbeat intervals (>> 1
hour), due to a limitation in the implementation of `pdMS_TO_TICKS()` in
older FreeRTOS versions. Newer version of FreeRTOS (as of `V11.0.0`
published December 2023) have fixed this
[issue](https://github.com/FreeRTOS/FreeRTOS-Kernel/commit/9c649ea7d1dd0206092697d73c894fd2c4fe29b3).
- Add a stack usage metric to the FreeRTOS example app
## [1.7.4] - 2024-03-26
### π Improvements
- nRF-Connect SDK:
- Update the Memfault SDK's nRF-Connect SDK
[example apps](examples/nrf-connect-sdk) to nRF-Connect SDK v2.6.0
- In the Memfault SDK [nRF9160 example app](examples/nrf-connect-sdk/nrf9160),
set the Kconfig flag `CONFIG_DOWNLOAD_CLIENT_HTTP_FRAG_SIZE_1024=y` in
`prj.conf` instead of via a conditional `CMakeLists.txt` expression. This
makes the setting more explicit for users that are referencing the sample
app.
- ESP-IDF:
- Enable disabling the Memfault component by setting the `MEMFAULT_DISABLE=1`
environment variable in the build environment (ex:
`MEMFAULT_DISABLE=1 idf.py build`). This is useful in cases where the
Memfault component can not be n-selected in the application's root
`CMakeLists.txt` but needs to be conditionally excluded, for example when
building a reduced factory firmware image.
## [1.7.3] - 2024-03-19
### π Improvements
- Zephyr:
- Add new Kconfig flags for the following Memfault Core Metrics:
- `MEMFAULT_METRICS_SYNC_SUCCESS` (default=y)
- `MEMFAULT_METRICS_MEMFAULT_SYNC_SUCCESS` (default=y)
- `MEMFAULT_METRICS_CONNECTIVITY_CONNECTED_TIME` (default=y)
- `MEMFAULT_METRICS_BATTERY_ENABLE` (default=n)
Additionally, a Kconfig flag `MEMFAULT_BATTERY_METRICS_BOOT_ON_SYSTEM_INIT`
will enable auto-initialization of battery metrics on system init (requires
`memfault_platform_get_stateofcharge()` to be implemented).
See <https://mflt.io/core-metrics> for more information on Core Metrics.
- ESP-IDF:
- Add preliminary support for the upcoming ESP-IDF v5.3.0 release.
## [1.7.2] - 2024-03-09
### π Improvements
- General:
- The Memfault Self Test component boot check now prints all components that
are booted (previously only un-booted components would print):
```plaintext
MFLT:[INFO] =============================
MFLT:[INFO] Component Boot Test
MFLT:[INFO] =============================
MFLT:[INFO] Component | Booted?|
MFLT:[INFO] -----------------------------
MFLT:[INFO] Event Storage | yes|
MFLT:[INFO] Logging | yes|
MFLT:[INFO] Reboot Tracking | yes|
MFLT:[INFO] Trace Event | yes|
MFLT:[INFO] All components booted
MFLT:[INFO] =============================
```
- Restore the Memfault Demo CLI `heartbeat` command, which was unintentionally
removed in v1.7.1. This command triggers a heartbeat on-demand, for testing
heartbeat functionality.
- Zephyr:
- A few minor changes to support the upcoming Zephyr 3.6 release, specifically
for devices that use mbedTLS for TLS connections.
- ESP-IDF:
- v1.7.0 of the SDK added a Kconfig flag to enabled Compact Logs,
`CONFIG_MEMFAULT_COMPACT_LOG_ENABLE`. Updating from older versions of the
SDK would require opting in to that option, even if Compact Logging was
enabled via the Memfault config flag, `MEMFAULT_COMPACT_LOG_ENABLE`.
Instead, support enabling Compact Logs both via the Memfault config flag or
the Kconfig flag, to require no changes when updating the SDK for existing
users.
## [1.7.1] - 2024-02-28
### π Improvements
- General:
- Fix a reboot reason test on MacOS by adding a stub implementation of a
function to avoid an empty archive not allowed by the system clang install
- Add a new macro `MEMFAULT_REBOOT_MARK_RESET_IMMINENT_CUSTOM()` that is more
concise for custom reboot reasons by taking the reboot reason name directly.
Previously, `MEMFAULT_REBOOT_MARK_RESET_IMMINENT()` was the only option,
which requires passing a key with `MEMFAULT_REBOOT_REASON_KEY()`.
- Add a session start callback with
`memfault_metrics_session_register_start_cb()`. This change enables, for
example, tracking battery percent drop across sessions; battery state
tracking variables can now be initialized at the start of a session.
- Add a coredump storage test to the self test which will now test the
coredump storage implementations and check available storage capacity. This
is currently experimental and must be explicitly enabled with the Kconfig
`CONFIG_MEMFAULT_SHELL_SELF_TEST_COREDUMP_STORAGE=y` on Zephyr,
`CONFIG_MEMFAULT_CLI_SELF_TEST_COREDUMP_STORAGE=y` on ESP-IDF, or by adding
`#define MEMFAULT_DEMO_CLI_SELF_TEST_COREDUMP_STORAGE 1` to your
`memfault_platform_config.h` for other platforms.
- Convert the previous `heartbeat_dump` command to `metrics_dump` that can
either dump all current heartbeat metrics with `metrics_dump heartbeat` or
all session metrics with `metrics_dump sessions` that haven't yet been
exported. These commands help with testing metrics collection locally
without needing to push chunks to Memfault.
- Apply a handful of changes to fix items raised by a new static analyzer
- Fix a minor formatting issue that was causing a compilation error for CC ARM
- Update support links to refer to the preferred site
<https://mflt.io/contact-support> instead of the Memfault support email.
This link will redirect to a form where questions can be sent to the
Memfault support team.
- Update the `README.md`s in example apps to point to the
[Demo CLI](https://docs.memfault.com/docs/mcu/demo-cli) page on the Memfault
docs website where comprehensive information is available on commands and
their output
- nRF-Connect SDK:
- Fix a problem caused by mismatched root certificates in modem storage. This
change will ensure that all certificates are updated if they do not match
expected contents. Prior to v1.7.1, the SDK would only update a certificate
by checking each tag for certificate existence, not certificate content. In
v1.3.0, the order of root certificates was changed and one was removed. On
devices running pre-1.3.0 firmware, updating to later versions can hit a
mismatch between the expected certificates and those in modem storage.
- Remove a root certificate deprecated in v1.3.0 if present in modem storage.
Devices using an SDK version before v1.3.0 may contain a now deprecated root
certificate.
## [1.7.0] - 2024-02-15
### π New Features
- General:
- πCustom Reboot Reasons!π The SDK now allows creating custom reboot reasons
in addition to those defined in
[`components/include/memfault/core/reboot_reason_types.h`](components/include/memfault/core/reboot_reason_types.h).
Users can create custom reboot reasons for both expected and unexpected
reboots. For more information see
[`components/include/memfault/core/reboot_tracking.h`](components/include/memfault/core/reboot_tracking.h).
Enable this feature with Kconfigs in Zephyr and ESP-IDF
(`CONFIG_MEMFAULT_REBOOT_REASON_CUSTOM_ENABLE=y`) or by adding
`#define MEMFAULT_REBOOT_REASON_CUSTOM_ENABLE 1` to your
`memfault_platform_config.h`.
- Added an option to include a Project Key in a chunk message header. This
allows a chunk to specify which project the included data should be sent to.
The default behavior is to use the project specified by the Project Key
header in the POST upload. To enable, add
`#define MEMFAULT_MESSAGE_HEADER_CONTAINS_PROJECT_KEY 1` and
`#define MEMFAULT_PROJECT_KEY "<project key string>"` to your
`memfault_platform_config.h`. Any chunks sent using this configuration will
be sent to the project routed with `MEMFAULT_PROJECT_KEY` rather than the
project routed with the POST header's Project Key.
### π Improvements
- General:
- Improved suggested linker snippets defining coredump memory regions
- Added a self test to validate platform time functions,
`memfault_platform_get_time_since_boot_ms()` and
`memfault_platform_time_get_current()`. This test will catch errors like
non-monotonically increasing counters and current time reported as near
epoch time
- Fixed backspace handling in the FreeRTOS QEMU example console
- Added `-fsanitize=leak` to the SDK unit tests (Linux only)
- Fixed a missing `strnlen()` definition when enabling the self test with some
libc implementations. This function is part of a POSIX standard that might
be missing from some libc implementations
- Added the previous release commit for 1.6.2 to `.git-blame-ignore-revs` to
allow for better `git blame` output since this commit contains _only_
formatting changes.
- Zephyr:
- Added an example CDR implementation to the example QEMU app
- Added a Kconfig, (`CONFIG_MEMFAULT_RECORD_REBOOT_ON_SYSTEM_INIT`) to allow
deferring reboot reason collection to a later point in time. Setting this
option to `n` is intended to help when device info is only available after
boot completes.
- Added built-in metrics for Zephyr's IP subsystem,
(`CONFIG_MEMFAULT_METRICS_TCP_IP`)
- Added Kconfig to select either PEM or DER formats for TLS certificates,
(`CONFIG_MEMFAULT_TLS_CERTS_USE_DER`)
- ESP-IDF:
- Added a Kconfig to enable/disable compact logging
(`CONFIG_MEMFAULT_COMPACT_LOG_ENABLE`)
- Improved build compatibility when building with PlatformIO
- Added support for networking over Ethernet interfaces
- Added a built-in `connectivity_connected_time` core metric for WiFi devices,
(`CONFIG_MEMFAULT_ESP_WIFI_CONNECTIVITY_TIME_METRICS`)
## [1.6.2] - 2024-01-29
### π Improvements
- General:
- Apply `clang-format` to the entire codebase, to ensure consistent code
formatting. The formatting rules are defined in
[`.clang-format`](.clang-format). No other changes are included in this
release. A
[`.git-blame-ignore-revs`](https://git-scm.com/docs/git-config#Documentation/git-config.txt-blameignoreRevsFile)
entry will be added in the next release, to enable ignoring this commit when
running `git blame`. Use this ignore file in your local repo with
`git config blame.ignoreRevsFile=.git-blame-ignore-revs`.
## [1.6.1] - 2024-01-29
### π Improvements
- General:
- Add a reboot reason self test, which validates the reboot reason data is
correctly preserved through device reboot. This test first sets a custom
reboot reason, then calls `memfault_platform_reboot()` to reboot the system.
To verify the operation succeeded, the self test is called again to check
the reboot reason was saved. The reboot reason self test can be performed by
passing the appropriate flags when calling the `memfault_self_test_run()`
file (see
[`components/include/memfault/core/self_test.h`](components/include/memfault/core/self_test.h)
for details), and from the demo CLI as
`self_test reboot`/`self_test reboot_verify`.
- Fix a `ti-armcl` compiler warning due to enumeration mismatch in
initialization (`#190-D`).
- Add a compile-time option to enable the self-test module. Enabling the
self-test increases code space utilization, and is usually of use during
set-up and SDK integration testing. The self-test can be enabled by setting
`#define MEMFAULT_SELF_TEST_ENABLED 1` in `memfault_platform_config.h`, or
via `CONFIG_MEMFAULT_CLI_SELF_TEST=y` for ESP-IDF and
`CONFIG_MEMFAULT_SHELL_SELF_TEST=y` for Zephyr.
- ESP-IDF:
- Expose a new function `memfault_esp_port_ota_get_release_url()` for fetching
the OTA release URL without performing a download. This is useful for cases
where the URL is needed for other purposes, such as for fetching a
downstream device OTA artifact. See
[`ports/esp_idf/memfault/include/memfault/esp_port/http_client.h`](ports/esp_idf/memfault/include/memfault/esp_port/http_client.h)
for details.
- nRF-Connect SDK:
- Add support for the new `fota_download_any()` (see documentation
[here](https://github.com/nrfconnect/sdk-nrf/blob/0692684d0e0b924335882969bc7bf474c673ac81/doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst#L847-L848)),
which accepts a list of certificates to use when executing FOTA downloads.
This API is expected to be included in the upcoming nRF-Connect SDK v2.6.0
release.
## [1.6.0] - 2024-01-09
### π Improvements
- ESP-IDF:
- In the [ESP32 example app](examples/esp32), disable the shell history cache
for the FatFS shell command handler, which saves some ~20kB of heap memory.
- Also in the [ESP32 example app](examples/esp32), add a new built-in metric
`sync_successful` which is set to `1` when a successful Memfault OTA
check-in is performed. Primarily added for demonstration purposes for the
metric. See more information about Memfault Core Metrics
[here](https://docs.memfault.com/docs/platform/memfault-core-metrics).
- General:
- Enhanced the Self-Test component with the following new features:
- Check that other components are initialized correctly (boot test)
- Check that exporting data over the console is supported (primiarly
checking that the output buffer is large enough)
- Print information about the coredump regions that would be collected
during a crash, for diagnostic purposes
- nRF-Connect SDK:
- Fix a use-after-free problem in the Memfault FOTA helper code
([`ports/zephyr/ncs/src/memfault_fota.c`](ports/zephyr/ncs/src/memfault_fota.c)),
where the allocated Memfault OTA download URL was freed too early. This
issue was introduced in Memfault SDK v1.5.0, where support for FOTA on
nRF-Connect SDK v2.4+ was improved.
- Zephyr:
- Fix a concurrent access bug in the Memfault Zephyr Logging Backend. Only
affected configurations with `CONFIG_LOG_MODE_IMMEDIATE=y`. In certain cases
the logging `ctx` could be corrupted, causing unpredictable behavior.
Replace the synchronization approach with an atomic primitive and correct a
potential concurrency issue in the log panic handler.
- Fix a build warning for certain Zephyr configurations (when using
`CONFIG_NEWLIB_LIBC=y`) due to a missing declaration for `strnlen`. This
warning was introduced with the Memfault Self-Test additions in Memfault SDK
v1.5.2.
### π₯ Breaking Changes
- General:
- The Battery Metrics platform API has been consolidated into a single
function,
`int memfault_platform_get_stateofcharge(sMfltPlatformBatterySoc *soc)`,
where the platform data is loaded into the `soc` struct. This should
simplify the platform implementation, and enables platforms to return a
non-zero value to indicate state-of-charge is unknown. See the new API in
the header file
[`memfault/metrics/platform/battery.h`](components/include/memfault/metrics/platform/battery.h)
## [1.5.2] - 2023-12-12
### π Improvements
- General:
- Add a self-test component which checks the device's integration state. This
self test is available via the demo cli command `self_test`, or can be
called directly via `memfault_self_test_run()` (see
[`self_test.h`](components/include/memfault/core/self_test.h) for details).
Currently, it validates device info and the build ID.
- Add a helper macro called `MEMFAULT_REBOOT_MARK_RESET_IMMINENT` in order to
make marking an imminent reboot easier. It takes the reboot reason as an
argument.
- ESP-IDF:
- Add an opt-in assert on malloc failure, controlled with
`CONFIG_MEMFAULT_ASSERT_ON_ALLOC_FAILURE`. This is useful for tracking heap
memory issues. Depending on the design, a system may in general not have any
expected malloc failures, and may not be set up to handle them. This feature
will generate issues tagged as `Out Of Memory` in the Memfault platform.
- Zephyr:
- Adjust the implementation of `memfault_zephyr_port_http_upload_sdk_data()`
to check the socket before each incremental call to the `send()` socket
operation and wait for the socket to become available. If the socket takes
too long (a healthy 5 second timeout is given), the function will return
with an error. Note this function was previously blocking, but may now abort
mid-transfer. This check was primarily added to prevent a busy loop that
hogs the CPU, preventing lower priority threads from running. This situation
could occur with larger HTTP transfers during which the socket may be busy
processing tx data when another send request occurs.
- Fix a build error in the Zephyr RTC port.
## [1.5.1] - 2023-12-07
### π Improvements
- nRF-Connect SDK:
- Correct a build error that occurs when `CONFIG_DOWNLOAD_CLIENT=y` +
`CONFIG_MEMFAULT_FOTA=n`. This fixes the second issue reported in
[#66](https://github.com/memfault/memfault-firmware-sdk/issues/66#issuecomment-1845301737)
### π₯ Breaking Changes
- General:
- The SDK config flag `MEMFAULT_EVENT_STORAGE_NV_SUPPORT_ENABLED` now defaults
to `0`, disabled. This saves a minor amount of code space. Most
implementations don't need the feature; for users that require it, the flag
will now need to be set in `memfault_platform_config.h` as
`#define MEMFAULT_EVENT_STORAGE_NV_SUPPORT_ENABLED 1`.
## [1.5.0] - 2023-11-29
### π New Features
- General:
- Added support for Session Metrics. These are similar to Heartbeat Metrics,
except they are set on an arbitrary session interval (not required to be
aligned to Heartbeat interval). Session metrics are useful for tracking
device operation sessions- for example, measuring properties for a BLE
connected stove top during a single cooking session. Session metrics
automatically include a "session duration" timer metric.
Session metrics must be defined using the new session-specific APIs, but are
set using the same `MEMFAULT_METRIC_SET_*` APIs as Heartbeat metrics.
See the
[`metrics.h` header file](components/include/memfault/metrics/metrics.h) for
usage details.
- New built in metrics for measuring the following properties:
- **crash-free hours**: enabled by default, generates `operational_hours`
and `operational_crashfree_hours` metrics, which are automatically
processed by Memfault
- **battery drop**: enabled with `#define MEMFAULT_METRICS_BATTERY_ENABLE 1`
in `memfault_platform_config.h`. See more information in the
[header file](components/include/memfault/metrics/battery.h) for how to
use the metric.
- **connectivity**: enabled with
`MEMFAULT_METRICS_SYNC_SUCCESS`/`MEMFAULT_METRICS_MEMFAULT_SYNC_SUCCESS`/`MEMFAULT_METRICS_CONNECTIVITY_CONNECTED_TIME`.
See more information in the
[header file](components/include/memfault/metrics/connectivity.h) for how
to use the metric.
These metrics are considered first-class metrics by Memfault, are exempt
from quota limits, and are automatically processed by Memfault.
- Zephyr:
- By default, set the `sync_memfault_successful`/`sync_memfault_failure`
metrics for devices using Memfault's Zephyr HTTP chunk upload functionality.
This feature is controlled with the `CONFIG_MEMFAULT_SYNC_MEMFAULT_METRICS`
Kconfig flag.
- Automatically set captured timestamps for events for devices that either
implement the RTC subsystem, or use the Nordic `date_time` library. The
appropriate option is enabled by default based on which features are
available, and can be controlled with the Kconfig flags:
`CONFIG_MEMFAULT_SYSTEM_TIME_SOURCE_DATETIME` or
`CONFIG_MEMFAULT_SYSTEM_TIME_SOURCE_RTC`.
- ESP-IDF:
- By default, set the `sync_memfault_successful`/`sync_memfault_failure`
metrics for devices using Memfault's ESP-IDF HTTP chunk upload
functionality. This feature is controlled with the
`CONFIG_MEMFAULT_SYNC_MEMFAULT_METRICS` Kconfig flag.
### π Improvements
- General:
- Add the ability to extend the Memfault Demo Shell command table with custom
commands. This is used in the [`examples/freertos`](examples/freertos) demo
project to add 2 new commands:
- `freertos_tasks` : print FreeRTOS task information, via `vTaskList()`
- `freertos_vassert` : trigger a `vAssertCalled` FreeRTOS assert, via
`configASSERT()`
The Shell extension API is documented in
[`components/include/memfault/demo/shell_commands.h`](components/include/memfault/demo/shell_commands.h),
and must be enabled by setting
`#define MEMFAULT_DEMO_SHELL_COMMAND_EXTENSIONS 1` in
`memfault_platform_config.h`.
- Zephyr:
- Remove a warning in Zephyr 3.5+ where the `zephyr/random/rand32.h` header
was renamed to `zephyr/random/random.h`. This was reported in
[#66](https://github.com/memfault/memfault-firmware-sdk/issues/66)- thanks
to @nordicjm for reporting this!
- Add test commands for exercising Secure Faults in ARM TrustZone-enabled
chips:
- `mflt test badptr`
- `mflt test isr_badptr`
Note that non-TrustZone chips may not trigger a fault when running those
commands.
- nRF-Connect SDK:
- Add the `CONFIG_AT_SHELL` setting to the
[`examples/nrf-connect-sdk/nrf9160`](nrf-connect-sdk/nrf9160) sample app.
This permits sending raw AT commands, useful for testing.
- Specific to nRF-Connect based apps using FOTA, add a warning if
`CONFIG_DOWNLOAD_CLIENT_HTTP_FRAG_SIZE > 1024`, which can sporadically error
out on nRF9160 devices (there is a limitation in the modem, see
`CONFIG_DOWNLOAD_CLIENT_HTTP_FRAG_SIZE_2048=y`) and DevZone note
[here](https://devzone.nordicsemi.com/f/nordic-q-a/68601/tls-2303-bytes-packet-limit/281107).
- Improve FOTA support for nRF-Connect SDK 2.4+, by improving the technique
used to find the correct Memfault server root cert. Memfault uses a fast CDN
to improve OTA payload delivery, which uses a different root cert than the
Memfault device server. Please contact <support@memfault.com> immediately if
you encounter any cert-related issues.
### π₯ Breaking Changes
- The metrics convenience API added in v1.4.3 (`MEMFAULT_HEARTBEAT_SET_*` and
others) have been renamed to `MEMFAULT_METRIC_SET_*`, to better support the
new Session Metric feature.
## [1.4.4] - 2023-11-13
### π Improvements
- General:
- Rename this file from [`CHANGES.md`] to [`CHANGELOG.md`].
- For FreeRTOS, add a warning when `configRECORD_STACK_HIGH_ADDRESS` is not
enabled. Memfault uses this to show stack sizes in the coredump view for
coredumps on FreeRTOS systems. The warning can be disabled by enabling the
`configRECORD_STACK_HIGH_ADDRESS` FreeRTOS config flag, or by setting
`#define MEMFAULT_FREERTOS_WARN_STACK_HIGH_ADDRESS_UNAVAILABLE 0`.
- Make `memfault_packetizer_get_chunk()` return `false` if the buffer was too
small to load a full chunk. Previously the function would return `true` but
with `0` bytes loaded into the output buffer and `*buf_len` set to `0`.
- Update all example Metrics implementations to use the new API from v1.4.3
(eg `MEMFAULT_METRIC_SET_UNSIGNED` instead of
`memfault_metrics_heartbeat_set_unsigned`).
- Fix compilation for systems not integrating the
[Metrics](https://mflt.io/embedded-metrics) component but using the Demo CLI
(this regressed in v1.4.3).
## [1.4.3] - 2023-11-08
### π New Features
- General:
- Add a new streamlined Metrics setter API:
- `MEMFAULT_METRIC_SET_SIGNED(key_name, signed_value)`
- `MEMFAULT_METRIC_SET_UNSIGNED(key_name, unsigned_value)`
- `MEMFAULT_METRIC_SET_STRING(key_name, value)`
- `MEMFAULT_METRIC_TIMER_START(key_name)`
- `MEMFAULT_METRIC_TIMER_STOP(key_name)`
- `MEMFAULT_METRIC_ADD(key_name, amount)`
These APIs can be used in place of the original APIs:
- `memfault_metrics_heartbeat_set_signed(MEMFAULT_METRICS_KEY(key_name), signed_value)`
- `memfault_metrics_heartbeat_set_unsigned(MEMFAULT_METRICS_KEY(key_name), unsigned_value)`
- `memfault_metrics_heartbeat_set_string(MEMFAULT_METRICS_KEY(key_name), value)`
- `memfault_metrics_heartbeat_timer_start(MEMFAULT_METRICS_KEY(key_name))`
- `memfault_metrics_heartbeat_timer_stop(MEMFAULT_METRICS_KEY(key_name))`
- `memfault_metrics_heartbeat_add(MEMFAULT_METRICS_KEY(key_name), amount)`
Saving some typing!
- Add the ability to compute FreeRTOS task stack high watermarks when storing
coredumps. This is useful only if the entire RAM (`.data` + `.bss`) cannot
be saved in the coredump. The feature is opt-in with the config flag
`#define MEMFAULT_COREDUMP_COMPUTE_THREAD_STACK_USAGE 1`.
- Add a `heartbeat` command to the [core demo cli](components/demo). This
behaves the same as the commands of the same name already present in the
Zephyr + ESP-IDF port.
- Add a `test_cassert` command to the core demo cli. This command executes a C
stdlib `<assert.h>``assert(0)` call. For platforms that do not implement a
`assert()` handler, a config flag `MEMFAULT_DEMO_DISABLE_CASSERT` can be
defined to `0` to disable the command.
- ESP-IDF:
- Add a new out-of-box metric, `wifi_ap_oui`, which will record the associated
AP's Organizationally Unique Identifier (OUI) in the Memfault heartbeat.
- Zephyr:
- Organize the Memfault Coredump Kconfig settings under a
`Memfault Coredump Settings` submenu, for easier navigation when using
graphical Kconfig frontends like menuconfig.
### π Improvements
- General:
- Disable a warning emitted by the ARM C Compiler v5
(`#188-D: enumerated type mixed with another type`) when initializing a
structure in
[`components/core/src/memfault_log.c`:314](https://github.com/memfault/memfault-firmware-sdk/blob/1.4.3/components/core/src/memfault_log.c#L313).
- Improve the quality of Assert backtraces when using the ARM C Compiler v5.
Certain frames in the assert call stack were missing link register
information, due to compiler optimizations based on the `noreturn` and
unreachable compiler hints. These hints have been removed for `armcc`, which
should permit full stack unwinding for Assert coredumps generated from
builds on that toolchain.
- Perform an update of the timer when calling the
`memfault_metrics_heartbeat_timer_read()` debug function. Fixes
[#65](https://github.com/memfault/memfault-firmware-sdk/pull/65). Thanks to
@LuskeyNoah for providing this fix!
- ESP-IDF:
- Fix a missing piece enabling the "zero-config" integration (originally added
in `1.4.0`)- the `memfault_platform_port.h` file was still incorrectly
required. This is now fixed.
## [1.4.2] - 2023-11-02
### π Improvements
- General:
- Improve the trace quality for asserts when using the IAR compiler and high
optimization settings (`-Oh`)
- Add demo CLI command to print the current values of heartbeat metrics. Try
this out in your demo CLI implementation or with the built-in CLI with
Zephyr!
## [1.4.1] - 2023-10-31
### π New Features
- ESP-IDF:
- Add the following built-in heap allocation metrics by default. These can be
disabled with the `CONFIG_MEMFAULT_ESP_HEAP_METRICS` Kconfig flag.
- `heap_free_bytes`
- `heap_largest_free_block_bytes`
- `heap_allocated_blocks_count`
- `heap_min_free_bytes`
### π Improvements
- Zephyr:
- Enable capturing [Memfault-style compact logs](https://mflt.io/compact-logs)
on Zephyr systems. Note that this does not enable decoding
[Zephyr "dictionary logs"](https://docs.zephyrproject.org/3.5.0/services/logging/index.html#dictionary-based-logging),
but requires using the Memfault logging APIs directly (i.e.
`MEMFAULT_LOG_INFO("...")` instead of `LOG_INF("...")`).
- General:
- Add a `coredump_size` CLI command to the Zephyr, ESP-IDF, and demo CLI
implementations. This command will print the computed size of the coredump
and the available storage space. Can be used to tune coredump size.
- Enable providing the Memfault HTTP Client with a custom
`memfault_platform_get_device_info()` callback, for when the device is
uploading data for a downstream device, with different device info.
- When [compact logging](https://mflt.io/compact-logs) is enabled, route all
`MEMFAULT_LOG_x()` statements through the compact serializer
(`MEMFAULT_COMPACT_LOG_SAVE`). Previously, logs had to explicitly use the
`MEMFAULT_COMPACT_LOG_SAVE` API to store in the compact form.
- Capture C stdlib `assert.h` asserts, by implementing the correct assert
hooks for Newlib/Picolibc and IAR libc's. This can be disabled with the
Memfault platform config `MEMFAULT_ASSERT_CSTDLIB_HOOK_ENABLED`. This should
improve the Trace quality for systems that are using the C stdlib
`assert(x)` functions.
### π Improvements
## [1.4.0] - 2023-10-23
### π New Features
- ESP-IDF:
- Implement support for a "zero-config" integration on ESP-IDF. This change
makes the template + platform config files optional. See the
[ESP32 Integration Guide](https://mflt.io/esp-tutorial) section on
configuration files for details.
### π Improvements
- ESP-IDF:
- Fix a build issue when overriding the default device-info implementation,
`CONFIG_MEMFAULT_DEFAULT_GET_DEVICE_INFO=n`. This was a regression in
**1.3.3**.
- Add a new Kconfig flag, `MEMFAULT_COREDUMP_STORAGE_MAX_SIZE`, which can be
used to set the Memfault SDK's built-in
[ESP-IDF coredump storage implementation](https://github.com/memfault/memfault-firmware-sdk/blob/master/ports/esp_idf/memfault/common/memfault_platform_coredump.c)
to artificially limit the maximum coredump storage size. This is useful for
situations where the default `memfault_platform_coredump_get_regions()`
function is still desirable, but the coredump maximum size needs to be
limited (eg for bandwidth reasons).
- Switch to using `ESP_DRAM_LOGE` when logging an error from Memfault's
FreeRTOS task tracking when the number of tasks created on the system
exceeds `MEMFAULT_PLATFORM_MAX_TRACKED_TASKS` (default of 16).
- General:
- Remove the setting of the Memfault Firmware SDK version into a string metric
on system boot. This value is now automatically extracted by the Memfault
backend from the symbol file, and does not need to be set by devices.
## [1.3.5] - 2023-10-14
### π Improvements
- ESP-IDF:
- Fix build errors when building the [ESP32 example app](examples/esp32)
project on ESP-IDF versions earlier than v5. This was a regression in
**1.3.4**.
- Conditionally remove a redundant call to `esp_timer_init()` during the
`memfault_boot()` sequence, which was causing a runtime error message. This
call was originally required when `memfault_boot()` was called as part of
ESP-IDF system init, which was disabled by default in **0.31.4** and
deprecated in **0.40.0**. The redundant call was harmless but generated a
nuisance error message.
- Fix another build error in the public unit tests caused by the `-fanalyzer`
flag. The `-fanalyzer` static analyzer was generating a false positive on
GCC 11. Updating the GCC version to 12 removes the false positive.
## [1.3.4] - 2023-10-12
### π Improvements
- ESP-IDF:
- Add a missing dependency to the `memfault` component, `esp_https_ota`. It's
only linked into the target project if the `memfault_esp_port_ota_update()`
API is used. This was previously an implicit dependency from the `common`
component dependencies, when building `memfault` into an ESP-IDF
component-style project. This change fixes building for non-component-style
ESP-IDF projects, where the default component dependencies might not be
included.
- Multiple changes to the
[`examples/esp32`](examples/esp32/apps/memfault_demo_app) sample project:
- Add a new `coredump_size` shell command, which prints out the maximum
coredump size and the available coredump storage capacity.
- Add new `settings_[get|set]` shell commands, and enable setting the LED
brightness and blink interval to NVS. This is intended as a minor
quality-of-life change for internal Memfault users of the example app.
- Fix a build error in the public unit tests, caused by the recent addition of
the `-fanalyzer` flag to the unit test compilation options.
## 1.3.3 - Oct 10, 2023
### π Improvements
- Zephyr:
- Add a new Kconfig flag, `CONFIG_MEMFAULT_FAULT_HANDLER_RETURN`, which will
call the normal `z_fatal_error` handler at the end of Memfault fault
processing instead of rebooting the system. This is useful when user code
needs to run within `k_sys_fatal_error_handler()` just prior to system
shutdown. Thanks to @JordanYates for the patch! Fixes
[#59](https://github.com/memfault/memfault-firmware-sdk/issues/59).
- Add a timeout to the initial `send()` socket operation in
`memfault_zephyr_port_http_upload_sdk_data()`, to abort the transfer if the
socket is blocking for too long. That function will execute repeated
`send()` calls to drain all the buffered Memfault data; this update only
changes the initial call to check for a timeout, but otherwise will keep
trying until the process completes, or a watchdog triggers. This is to
balance the existing behavior, where a badly performing socket will still
eventually push data through, but improves the case where the socket fails
on the initial send (more common failure mode).
- Remove a nuisance build warning generated when configured with
`CONFIG_LOG_PRINTK=y && CONFIG_LOG_MODE_DEFERRED=y`. This impacts the
usability of exporting base64-encoded chunks on the shell for testing
(`mflt export` command), but is otherwise harmless.
- ESP-IDF:
- Multiple changes to the
[`examples/esp32`](examples/esp32/apps/memfault_demo_app) sample project:
- Disable WiFi SoftAP by setting `CONFIG_ESP_WIFI_SOFTAP_SUPPORT=n`, since
it's unused in the sample app. This saves about 40kB flash.
- Permit setting the Memfault Project Key at runtime, with a new cli command
`project_key`. The key is saved in Non-Volatile Storage on the ESP32
board.
- General:
- Enable using compact logs with the IAR build tools, by adding the needed
`__no_alloc` attribute to the compact log symbols, to have the IAR linker
set the `NO_LOAD` attribute correctly on the compact log output section.
### π₯ Breaking Changes
- ESP-IDF:
- The [ESP-IDF port](ports/esp_idf/) now implements a default
`memfault_get_device_info()` function, which uses the device MAC address for
the Memfault Device Serial. When updating the Memfault SDK in an existing
project, this implementation will cause a **linker error** due to duplicate
definition. To disable the built-in definition, set
`CONFIG_MEMFAULT_DEFAULT_GET_DEVICE_INFO=n`.
## 1.3.2 - Sept 26, 2023
### π Improvements
- Zephyr:
- use `<cmsis_core.h>` instead of `<nmi.h>`. Thanks @kmeinhar for this change!
(see [#64](https://github.com/memfault/memfault-firmware-sdk/pull/64))
- nRF Connect SDK:
- Add missing Kconfig flags `CONFIG_FLASH_MAP=y` + `CONFIG_STREAM_FLASH=y` for
the [`examples/nrf-connect-sdk/nrf5/`](examples/nrf-connect-sdk/nrf5/)
example app, for compatibility with nRF Connect SDK v2.4.1+. This was
required due to an
[upstream Zephyr change](https://github.com/zephyrproject-rtos/zephyr/commit/1b4b979f8789af6087f877c0daad0a660c1b9b28).
- General:
- Add support for Memfault Compact Logs for C++ source files (previously only
supported in C source files). Compact logging can be enabled by setting
`MEMFAULT_LOG_COMPACT_ENABLE=1` in `memfault_platform_config.h`. See
[the docs](https://docs.memfault.com/docs/mcu/compact-logs/) for more
details.
- Fix a missing include of `<intrinsics.h>` required by the IAR compiler
## 1.3.1 - Sept 21, 2023
### π Improvements
- Zephyr:
- Add a new Kconfig, `CONFIG_MEMFAULT_COREDUMP_COMPUTE_THREAD_STACK_USAGE`, to
control whether thread stack usage is computed and collected on device
during a coredump.
## 1.3.0 - Sept 20, 2023
### π Improvements
- General:
- Remove an unused root certificate and adjust the order of certs to minimize
additional TLS handshakes; DigiCert G2 is the most likely root cert so it is
now the first one attempted in every place certificates are used. This
update is trickled down from
[DigiCert's pivot in March 2023](https://knowledge.digicert.com/generalinformation/digicert-root-and-intermediate-ca-certificate-updates-2023.html)
to their G2 root cert as their default certificate.
- Zephyr:
- Add support for the new location of the `nmi.h` header which
[moved recently](https://github.com/zephyrproject-rtos/zephyr/pull/60031).
## 1.2.5 - Sept 18, 2023
### π Improvements
- Add MQTT transport to esp32 example app
## 1.2.4 - Sept 12, 2023
### π Improvements
- Fix a unit test failure introduced in 1.2.3. No on-target code was impacted.
## 1.2.3 - Sept 12, 2023
### π Improvements
- General:
- Include the current MCU SDK version in the http client user agent header
- Zephyr:
- Update include paths for CMSIS headers for upcoming Zephyr support. Thanks
@gmarull for the patch!
- Modus Toolbox:
- Allow a user application to override
`memfault_metrics_heartbeat_collect_data`.
## 1.2.2 - Sept 5, 2023
### π Improvements
- ESP-IDF:
- Correct the heartbeat metrics key definition include configuration to
generate a consistent key index across the application. This regressed in
version 1.0.1 of the SDK.
### Changes between Memfault SDK 1.2.0 and 1.2.1 - Sept 1, 2023
#### π Improvements
- ESP-IDF:
- Add a `heartbeat` cli command to the ESP-IDF port that does the same thing
as in Memfault's default demo console + Zephyr's console.
- Zephyr:
- Add a new Kconfig option to the Zephyr port,
`CONFIG_MEMFAULT_PLATFORM_EXTRA_CONFIG_FILE=y`, which causes
`memfault_platform_config_extra.h` to be included in platform
configurations. This can be utilized by a third party consumer of Zephyr to
more easily extend the platform configurations set by Zephyr and avoid
potentially losing a user's platform configurations set in
`memfault_platform_config.h`, which
[happened in the nRF Connect SDK recently](https://devzone.nordicsemi.com/f/nordic-q-a/103188/memfault-sdk-integration-missing-user-memfault_platform_config).
### Changes between Memfault SDK 1.1.3 and 1.2.0 - Aug 30, 2023
#### π Improvements
- ESP-IDF:
- Eliminate several build warnings for our example app
- FreeRTOS:
- Fix a build error in our QEMU example when building on macOS
- Modus Toolbox:
- Update port to handle user override of SDK configs, metrics, trace_reasons,
etc
- Update port to fix errors when disabling built-in WiFi metrics
- nRF Connect SDK:
- Enable mcuboot & NCS 1.4 with our example apps
- Silicon Labs:
- Add a demo CLI component for the emblib port. Check out our
[Simplicity Studio example app](https://github.com/memfault/simplicity-studio-example)
for usage
- Fix a build warning in emblib port flash storage (MSC) module
- Zephyr:
- Fix a π when building with LOG_MODE_DEFERRED that prevent log messages from
flushing during a coredump
- Fix a π and warnings involving older Zephyr header paths. Resolves
[#62](https://github.com/memfault/memfault-firmware-sdk/issues/62) and
[#57](https://github.com/memfault/memfault-firmware-sdk/issues/57). Thanks
@JordanYates and @YHusain1 for reporting these issues.
### Changes between Memfault SDK 1.1.2 and 1.1.3 - Aug 8, 2023
#### π Improvements
- Set Memfault SDK version in a string metric on device boot, for easier
tracking of SDK versions in the Memfault UI
- Support using a different identifier for the GNU build id symbol (previously
was fixed to `__start_gnu_build_id_start`). Use the
`MEMFAULT_GNU_BUILD_ID_SYMBOL` define in `memfault_platform_config.h` to
override the default. For Zephyr, the Kconfig option
`CONFIG_MEMFAULT_GNU_BUILD_ID_SOURCE_BUILTIN` can be used to override the
builtin section specifier + linker fragment for the GNU build ID. Thanks to
@JordanYates for posting this change in
[#60](https://github.com/memfault/memfault-firmware-sdk/pull/60) π
- Improvements to the ARMv7-R exception handling when the supervisor processor
mode is active
- Zephyr:
- Add an optional mode to create and open the HTTP socket in separate function
calls, if the user needs to set additional socket options before connecting.
See
[ports/zephyr/include/memfault/ports/zephyr/http.h](ports/zephyr/include/memfault/ports/zephyr/http.h)
for details. Fixes
[#52](https://github.com/memfault/memfault-firmware-sdk/issues/52)- thanks
to @anicare-tero for posting this π
### Changes between Memfault SDK 1.1.1 and 1.1.2 - July 11, 2023
#### π Improvements
- Improve compatibility in
[reboot reason tracking](ports/emlib/rmu_reboot_tracking.c) and
[watchdog implementation](ports/emlib/wdog_software_watchdog.c) on Silicon
Labs Series 2 MCUs
- Zephyr:
- Fix a build error when `CONFIG_MEMFAULT_LOGGING=n`, see
[#56](https://github.com/memfault/memfault-firmware-sdk/issues/56). Thanks
to @JordanYates for reporting this issue!
- Fix a potential bug in the Memfault Log Backend when
`CONFIG_LOG_MODE_IMMEDIATE=y` when flushing of fault logs during a crash
### Changes between Memfault SDK 1.1.0 and 1.1.1 - June 30, 2023
#### π Improvements
- Reduce the amount of error logs emitted by the MbedTLS port HTTP client while
polling for session established. This regressed in SDK version 1.1.0.
### Changes between Memfault SDK 1.0.1 and 1.1.0 - June 29, 2023
#### π Improvements
- New built-in metrics π !
- FreeRTOS Idle Task runtime percentage metric: `idle_task_run_time_percent`.
This is automatically enabled for FreeRTOS builds with the correct tracing
options enabled, see
[ports/include/memfault/ports/freertos/metrics.h](ports/include/memfault/ports/freertos/metrics.h)
for details on how to enable or disable this metric.
- MbedTLS metrics for maximum and current memory used: `mbedtls_mem_max_bytes`
and `mbedtls_mem_used_bytes`. These are automatically enabled for ESP-IDF
projects, see
[ports/mbedtls/memfault_mbedtls_metrics.c](ports/mbedtls/memfault_mbedtls_metrics.c)
for usage details
- Renamed the built-in LwIP metrics added in SDK version 1.0.1 from
`Tcp_Drop_Count`/`Tcp_Rx_Count`/`Tcp_Tx_Count`,
`Udp_Drop_Count`/`Udp_Rx_Count`/`Udp_Tx_Count` to be all lowercase
`tcp_drop_count`/`tcp_rx_count`/`tcp_tx_count`,
`udp_drop_count`/`udp_rx_count`/`udp_tx_count`
- Add the following automatically enabled WiFi performance metrics to the
ESP-IDF port:
- `wifi_connected_time_ms`
- `wifi_disconnect_count`
- `wifi_sta_min_rssi`
- Fix a bug in the [mbedtls port](ports/mbedtls/) causing an infinite loop under
certain error conditions on TLS handshake
- Zephyr:
- Improve log flushing in the Memfault log backend during fault when deferred
logging is enabled. This ensures the latest log statements are included in
the coredump log data, when the `CONFIG_MEMFAULT_LOGGING_ENABLE=y`
- ESP-IDF:
- `ESP_ERROR_CHECK()` assert coredumps will now correctly show as assert in
the Memfault coredump analysis view, instead of "Hard Fault"
### Changes between Memfault SDK 1.0.1 and 1.0.0 - June 9, 2023
#### π Improvements
- Zephyr:
- Improve the quality of Zephyr stack usage detection when capturing less than
the full stack contents for each thread. This feature was originally
released in SDK `0.43.0`.
- ESP-IDF:
- Add Memfault Metrics tracking LwIP runtime statistics (packet counts). A new
Kconfig flag `CONFIG_MEMFAULT_LWIP_METRICS` controls this feature, which is
enabled by default. The LwIP metrics helper is available for non-ESP-IDF
projects using LwIP, see
[`ports/lwip/memfault_lwip_metrics.c`](ports/lwip/memfault_lwip_metrics.c)
for details
### Changes between Memfault SDK 1.0.0 and 0.43.3 - June 1, 2023
πππ
The Memfault Firmware SDK is now version `1.0.0` as of this release! Note that
this is just a procedural change, there are no breaking backwards-incompatible
changes in this release. We forgot to update our major version back in 2019, but
better late than never π
! Hopefully the remaining 281,474,976,710,656 versions
are enough π€.
πππ
#### π Improvements
- Zephyr:
- Add a new built-in metric `FileSystem_BytesFree` for tracking VFS bytes
free. This is enabled automatically when `CONFIG_FILE_SYSTEM=y`. Use the
Kconfig option `MEMFAULT_FS_BYTES_FREE_VFS_PATH` to set the VFS mount point
to monitor utilization (default value is `/lfs1`). The Kconfig option
`MEMFAULT_FS_BYTES_FREE_METRIC` can be used to disable the metric.
- Update a few spots in the Zephyr demo CLI to use `shell_print` instead of
`MEMFAULT_LOG` for command usage errors
### Changes between Memfault SDK 0.43.3 and 0.43.2 - May 22, 2023
#### π Improvements
- Zephyr:
- Add more granular Kconfig settings to control what's collected in
[`memfault_zephyr_coredump_get_regions()`](ports/zephyr/common/memfault_platform_coredump_regions.c).
Default settings are identical to before this change.
- `CONFIG_MEMFAULT_COREDUMP_COLLECT_STACK_REGIONS`
- `CONFIG_MEMFAULT_COREDUMP_COLLECT_KERNEL_REGION`
- `CONFIG_MEMFAULT_COREDUMP_COLLECT_TASKS_REGIONS`
- Fix a build error when an application is configured without
`CONFIG_HEAP_MEM_POOL_SIZE=y` (i.e. no `kmalloc` in use).
- Fix a build error when building the
[nRF9160 example](examples/nrf-connect-sdk/nrf9160) on nRF-Connect SDK v2.3.0.
- ESP-IDF:
- Add support for upcoming v5.1 release of the ESP-IDF SDK
- Add support in the [ESP32 example app](examples/esp32) for the ESP32-C6 chip
### Changes between Memfault SDK 0.43.2 and 0.43.1 - May 3, 2023
#### π Improvements
- Fix a bug π where metrics accumulated with `memfault_metrics_heartbeat_add()`
would no longer be included in the serialized heartbeat data. This regression
occurred in `0.42.0`.
### Changes between Memfault SDK 0.43.1 and 0.43.0 - April 26, 2023
#### π Improvements
- Zephyr:
- The `z_NmiHandlerSet` function is renamed for the upcoming Zephyr 3.4.
Support the new name. Fixes
[#49](https://github.com/memfault/memfault-firmware-sdk/issues/49). Thanks
@mbolivar-nordic for filing this issue!
### Changes between Memfault SDK 0.43.0 and 0.42.1 - April 18, 2023
#### π New Features
- Add coredump support for Cortex-R chips (ARMv7-R)
#### π Improvements
- Add a QEMU-based FreeRTOS example project, find it under
[examples/freertos](examples/freertos)
- Switch `printf` function attribute to use `__printf__`, to avoid collision
with user code that redefines the `printf` token
- Zephyr:
- Compute thread stack high watermark values on-target when capturing a
coredump. This enables showing high watermark information in the Memfault
coredump analysis view without capturing the full stack for a thread
### Changes between Memfault SDK 0.42.1 and 0.42.0 - April 4, 2023
#### π Improvements
- Zephyr:
- Remove `LEGACY_CONFIG_PATH` Kconfig selection, now that the `zephyr.h`
header is no longer used as of Memfault SDK `0.42.0`. This option no longer
exists after Zephyr v3.3.0. Fixes
[#48](https://github.com/memfault/memfault-firmware-sdk/issues/48)
- Minor changes to the [ESP8266 port](ports/esp8266_sdk) to improve
out-of-the-box compilation
- Add new functionality to output buffered log data via
`memfault_log_export_logs()`. See the
[`log.h` header](components/include/memfault/core/log.h) for detailed usage.
### Changes between Memfault SDK 0.42.0 and 0.41.2 - Mar 22, 2023
#### π Improvements
- Zephyr:
- Add option to capture full thread stacks for classifying stack overflows and
determining stack high watermarks. This feature is enabled by setting
`CONFIG_MEMFAULT_COREDUMP_FULL_THREAD_STACKS=y`
- Remove usage of the `zephyr.h` header in preparation for Zephyr v3.4.0.
Thanks to @jfischer-no for the patch!
- `memfault_gdb.py`:
- Add support for exporting data from GCC 12 compiled symbol files
- Add arguments to override device serial ID, software type, software version,
and hardware revision
#### π₯ Breaking Changes
- Metrics:
- Integer type metrics (signed/unsigned) will reset to NULL when not set
during a heartbeat interval. This NULL value will be discarded by Memfault
when received. The previous behavior was to reset to 0 which makes
discarding values difficult as 0 is a valid value for these types. For more
info please see the
[Metrics](https://docs.memfault.com/docs/mcu/metrics-api#setting-metric-values)
docs.
### Changes between Memfault SDK 0.41.2 and SDK 0.41.1 - Mar 10, 2023
#### π Improvements
- Zephyr / nRF-Connect SDK:
- Improve compatibility with Zephyr pre-3.0 deferred logging, when using the
Memfault backend
- Add an option to the
[examples/nrf-connect-sdk/nrf5](examples/nrf-connect-sdk/nrf5) to enable
capturing all of RAM in a coredump.
### Changes between Memfault SDK 0.41.1 and SDK 0.41.0 - Mar 1, 2023
#### π Improvements
- Zephyr / nRF-Connect SDK:
- Fix a bug π in the Memfault Logging backend, that causes coredump saving to
fail when building with Zephyr versions before 3.0 (nRF-Connect SDK < 2.0).
This regression was introduced in Memfault Firmware SDK **0.33.3**.
- ESP-IDF:
- Updated the [ESP32 example app](examples/esp32) for the ESP32-C3 on ESP-IDF
v5.0.1 to use size optimizations, to more closely mirror real world
environments and codesize.
- Fix a compilation error in the [ESP32 example app](examples/esp32) when
targeting ESP-IDF >=4.4,<4.4.3 . This regression was introduced in Memfault
Firmware SDK **0.39.1**.
### Changes between Memfault SDK 0.41.0 and SDK 0.40.0 - Feb 22, 2023
#### π New Features
- ESP-IDF:
- Added coredump support for the ESP32-C3 (RISC-V) chip. Thank you to @jlubawy
for your work on this in
[#42](https://github.com/memfault/memfault-firmware-sdk/pull/42) π!
### Changes between Memfault SDK 0.40.0 and SDK 0.39.1 - Feb 15, 2023
#### π₯ Breaking Changes
- ESP-IDF:
- The Kconfig `CONFIG_MEMFAULT_AUTOMATIC_INIT` has been deprecated and is no
longer supported. Users of this Kconfig should refactor their application to
call `memfault_boot` during initialization. Use of this Kconfig now results
in a build error. For more information please see
<https://docs.memfault.com/docs/mcu/esp32-guide#initializing-memfault>
### Changes between Memfault SDK 0.39.1 and SDK 0.39.0 - Feb 3, 2023
#### π New Features
- **Experimental**
- CMSIS-Pack support
- Out Of Memory reboot reason added
#### π Improvements
- ESP-IDF:
- The default implementation of `memfault_platform_coredump_get_regions` is
changed to collect the current active stack, .bss, .data, and .heap regions.
Additionally if you are using ESP-IDF >= 4.4.0, the SDK will prioritize
collecting FreeRTOS regions containing task TCB and stack data.
- Assert coredumps are now labeled with the Assert reason
### Changes between Memfault SDK 0.39.0 and SDK 0.38.0 - Feb 3, 2023
#### π₯ Breaking Changes
- Breaking changes to the
[`memfault_freertos_get_task_regions()`](ports/freertos/src/memfault_freertos_ram_regions.c)
function, which can be used to capture FreeRTOS tasks when coredumps are sized
smaller than all available RAM. The function will now, by default, capture a
truncated copy of each FreeRTOS TCB, instead of the complete structure. This
makes better use of coredump storage space; the TCB structures can be very
large (>1kB), but Memfault only needs the first few fields for coredump
decoding. The configuration flag `MEMFAULT_PLATFORM_FREERTOS_TCB_SIZE` (see
[`default_config.h`](components/include/memfault/default_config.h)) can be set
to `0` in `memfault_platform_config.h` to return to the previous behavior.
### Changes between Memfault SDK 0.38.0 and SDK 0.37.2 - Feb 1, 2023
#### π New Features
- Enable coredumps on the ESP32-S2 and ESP32-S3 chips.
### Changes between Memfault SDK 0.37.2 and SDK 0.37.1 - Jan 31, 2023
#### π Improvements
- Zephyr:
- Support building with `CONFIG_POSIX_API=y` in the Zephyr port HTTP client
- ESP-IDF:
- Reduce the spamminess of the esp32 example app logging
- Update [`scripts/memfault_gdb.py`](scripts/memfault_gdb.py):
- When explicitly listing a region to insert into the coredump via
`memfault coredump --region x y`, now support parseable GDB expressions for
the range arguments instead of requiring integer values. Thanks to @alvarop
for this patch
[#43](https://github.com/memfault/memfault-firmware-sdk/pull/43) !
- Use the `info all-registers` command when dumping registers, instead of the
deprecated `info registers all` command, which works better on certain
arch/monitor setups. Thanks to @alvarop for this patch
[#44](https://github.com/memfault/memfault-firmware-sdk/pull/44) !
### Changes between Memfault SDK 0.37.1 and SDK 0.37.0 - Jan 17, 2023
#### π Improvements
- FreeRTOS
- Add support for collecting truncated TCBs. This is particularly useful with
limited coredump space. Enable by defining
`MEMFAULT_PLATFORM_FREERTOS_TCB_SIZE` in `memfault_platform_config.h".
- ESP-IDF
- Add support for esp32s2/s3 platforms to the esp32 example application
#### π Internal
- Fixup some documentation typos/errors
- Add support for Python 3.10
### Changes between Memfault SDK 0.37.0 and SDK 0.36.1 - Dec 16, 2022
#### π Improvements
- Built-in Metrics
- Add `MemfaultSdkMetric_UnexpectedRebootDidOccur` metric. This metric uses
the platform's reboot register and any reasons by the SDK function
`memfault_reboot_tracking_mark_reset_imminent` to classify a reboot. When
reboot tracking determines a reboot is unexpected, this metric is set to 1.
Otherwise this metric is 0.
- [ModusToolboxβ’οΈ Software](https://www.infineon.com/cms/en/design-support/tools/sdk/modustoolbox-software/)
- Add log capture during coredump to port
- Demo CLI
- Add `mflt test loadaddr` command. This command is used to test specific
faults due to protected regions
#### π₯ Breaking Changes
- Built-in Metrics
- The built-in metric, `MemfaultSdkMetric_UnexpectedRebootDidOccur`,
classifies all reboot reasons greater than or equal to
`kMfltRebootReason_UnknownError` **or** equal to `kMfltRebootReason_Unknown`
as "unexpected reboots". It is recommended to ensure your platform's
implementation of `memfault_reboot_reason_get` classifies the reboot
register values as accurately and precisely as possible to avoid incorrect
metric values.
### Changes between Memfault SDK 0.36.1 and SDK 0.36.0 - Dec 9, 2022
#### π Improvements
- ESP-IDF:
- Fix a bug π in the [ESP32 example app](examples/esp32), where wifi join
fails when using versions of ESP-IDF prior to 5.0
### Changes between Memfault SDK 0.36.0 and SDK 0.35.0 - Dec 6, 2022
#### π Improvements
- ESP-IDF:
- Add support for
[just-released ESP-IDF v5](https://github.com/espressif/esp-idf/releases/tag/v5.0)
π! Thanks to @jlubawy and the patch supplied in #39 for this, very much
appreciated!
- Add an auto-OTA (and auto-WiFi-join) feature to the
[ESP32 example app](examples/esp32)- enabled by default but can be disabled
with Kconfig
- The [Heap Stats tracing component](https://mflt.io/mcu-heap-stats) has been
revamped to make more efficient usage of the bookkeeping structure. Usage
should be the same as before, but now should provide more data without
significantly expanding the memory utilization.
### Changes between Memfault SDK 0.35.0 and SDK 0.34.2 - Nov 22, 2022
#### π New Features
- **Experimental** Custom Data Recording API
- Allows sending custom data collected over the course of a recording period
#### π Improvements
- Zephyr:
- Modify heap stats to only collect info during allocations/deallocations from
threads
- ESP-IDF:
- ESP32 reboot tracking into RTC noinit
- nRF5 SDK:
- NRF5 coredump regions -Wunused-macros, fixes warning for unused macros
#### π Internal
- Experiment: pytest as fw test frontend
- README: Add additional details on port integration
### Changes between Memfault SDK 0.34.2 and SDK 0.34.1 - Nov 8, 2022
#### π Improvements
- [ModusToolboxβ’οΈ Software](https://www.infineon.com/cms/en/design-support/tools/sdk/modustoolbox-software/)
- Updates SDK for compatibility with MTB 3.0
### Changes between Memfault SDK 0.34.1 and SDK 0.34.0 - Nov 7, 2022
#### π Improvements
- nRF-Connect:
- Updates for Zephyr upmerge 2022.11.03 (see #35 + #36)
- Fix watchdog test (`mflt test hang`) in
[`examples/nrf-connect-sdk/nrf5/`](examples/nrf-connect-sdk/nrf5/)
- Zephyr:
- Set `CONFIG_QEMU_ICOUNT=n` in
[`examples/zephyr/qemu/`](examples/zephyr/qemu/), which fixes the emulated
target execution speed
- Add heap free and stack usage Metrics to
[`examples/zephyr/qemu/`](examples/zephyr/qemu/)
- Update the `memfault_demo_cli_cmd_assert()` test command to take a single arg,
which is used in `MEMFAULT_ASSERT_RECORD()`. This enables testing that assert
variant from the CLI.
### Changes between Memfault SDK 0.34.0 and SDK 0.33.5 - Nov 1, 2022
#### π Improvements
- Misc ESP32 [port](ports/esp_idf) &
[example app](examples/esp32/apps/memfault_demo_app) improvements
- Added diagnostic print line containing Build Id at boot up
- Improved messaging displayed when using `memfault_ota_check` test command
- Example app now prints device info on bootup
- Fix an issue where incremental build (`idf.py build && idf.py build`) would
report a nuisance failure.
- Flatten + simplify the directory structure of the QEMU based example project
- A new [`ports/mbedtls`](ports/mbedtls) is available, which implements a basic
Mbed TLS client for performing Memfault data upload.
- Zephyr: Collect sysheap stats using the
[Memfault Heap Tracking](https://mflt.io/mcu-heap-stats) component. This is
configured with the `CONFIG_MEMFAULT_HEAP_STATS` Kconfig option (enabled by
default), and will track allocations done with `k_malloc()`.
- Fix an enum-mismatch warning in `memfault_metrics.c` when using the ARMCC v5
compiler.
#### π₯ Breaking Changes
- If you are using the ESP32 HTTP Client, the Memfault Project Key is now
configured directly via the
[ESP32 Project Configuration System](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/kconfig.html).
You need to do the following:
1. Remove the `g_mflt_http_client_config` in your platform port
2. Add `CONFIG_MEMFAULT_PROJECT_KEY="YOUR_PROJECT_KEY"` to your projects
`sdkconfig.defaults`
### Changes between Memfault SDK 0.33.4 and SDK 0.33.5 - Oct 19, 2022
#### π Improvements
- nRF-Connect: Update the nRF9160 example application,
`examples/nrf-connect-sdk/nrf9160`, to build and run correctly with
nRF-Connect SDK v2.1.0
- Zephyr: Add an example Zephyr application targeting the QEMU board
- ESP-IDF:
- Add a configuration option for setting the ESP-IDF HTTP client timeout value
- Fix compilation for the ESP32-S3. _Note: coredumps are currently only
supported on the ESP32, not the ESP32-S2, -S3, or -C3. This change only
fixes compiling for the -S3 platform_
- Add support for ESP-IDF v4.2.3
#### π Internal
- Support building the unit tests with GCC 12
- Miscellaneous fixes to unit test infrastructure to better support building in
Mac OSX
### Changes between Memfault SDK 0.33.3 and SDK 0.33.4 - Sept 15, 2022
#### π Improvements
- Zephyr port updates:
- Handle thread abort in the task stack capture hook. Previous to this change,
aborted tasks would remain on the captured task list, and restarting the
task would create a duplicate entry.
### Changes between Memfault SDK 0.33.2 and SDK 0.33.3 - Sept 14, 2022
#### π Improvements
- Zephyr port updates:
- Add a call to `LOG_PANIC()` before running the Memfault fault handler, to
flush any deferred logs before the reboot
### Changes between Memfault SDK 0.33.1 and SDK 0.33.2 - Sept 7, 2022
#### π Improvements
- Zephyr port updates:
- fix a few minor nuisance build warnings on niche Zephyr configurations
- enable `LOG_OUTPUT` when `MEMFAULT_LOGGING_ENABLE` is enabled- this fixes a
build error if all other log backends are disabled. thanks to @balaji-nordic
for this fix! closes #33
- Add a debug cli test command to the nRF-Connect SDK port for printing the OTA
url
### Changes between Memfault SDK 0.33.0 and SDK 0.33.1 - Aug 26, 2022
#### π Improvements
- Fix a π in the heap stats component (#32), thanks @christophgreen for
reporting it!
- Zephyr port updates:
- add support for the newly namespaced Zephyr include path in upcoming Zephyr
v3.2 (`#include <zephyr.h>` β `#include <zephyr/zephyr.h>`). The includes
were moved
[prior to v3.1](https://github.com/zephyrproject-rtos/zephyr/commit/53ef68d4598b2f9005c5da3fc0b860ca1999d350)
of Zephyr, but v3.2
[changes the backwards compatibility support to opt-in](https://github.com/zephyrproject-rtos/zephyr/commit/1ec0c6f5308937dc8e77acc2567d6f53cdd7a74e).
The Memfault SDK is now updated to support both.
- fix Zephyr Memfault log capture to have the correct prefix in the decoded
output when using LOG2 - previously all log lines regardless of level would
have an `E` prefix (regression introduced in Memfault SDK version 0.32.0)
- fix Zephyr Memfault log capture when in `CONFIG_LOG_MODE_IMMEDIATE` and
using LOG2 to capture the full log line instead of each logged character as
a separate line.
#### π Internal
- Zephyr port folder for `v2.x` migrated to `common`, now that Zephyr v1.14
support has been removed (done in v0.32.0 of the Memfault SDK)
- Update README's for the example projects to match the new demo shell command
structure (`crash 1` β `test_hardfault`, etc).
- Tidy up nrf9160 example app Kconfig setup
- Fix parallel unit test invocation
### Changes between Memfault SDK 0.33.0 and SDK 0.32.2 - Aug 18, 2022
#### π Improvements
- Extend [memfault demo shell](components/demo/src/memfault_demo_shell.c) to
support terminals that only emit CR for line endings
- nRF5 SDK Updates:
- Added a [software watchdog](https://mflt.io/root-cause-watchdogs) reference
port for nRF5 SDK which makes use of the RTC Peripheral. See
[ports/nrf5_sdk/software_watchdog.c](ports/nrf5_sdk/software_watchdog.c) for
more details.
- Updated [nRF5 example app](examples/nrf5/apps/memfault_demo_app/) to make
use of hardware and new software watchdog port.
- Zephyr Port Updates:
- Added Kconfig option to fallback to using `printk` by default when no
logging is enabled. This can be disabled by setting
`CONFIG_MEMFAULT_PLATFORM_LOG_FALLBACK_TO_PRINTK=n`.
- nRF Connect SDK Updates:
- Fixed a π which could result in download errors when using
[Memfault nRF Connect SDK FOTA client](ports/nrf-connect-sdk/zephyr/include/memfault/nrfconnect_port/fota.h)
and enabled client in example application by default.
- Added new example application for trying Memfault with nRF53 & nRF52 based
development kits. See
[examples/nrf-connect-sdk/nrf5](examples/nrf-connect-sdk/nrf5) for more
details.
### Changes between Memfault SDK 0.32.2 and SDK 0.32.1 - Aug 16, 2022
#### π Improvements
- Zephyr port: added a fix for upcoming Zephyr 3.2 compatibility, thanks
@nordicjm for the fix!
### Changes between Memfault SDK 0.32.1 and SDK 0.32.0 - Aug 8, 2022
#### π Internal
- Added default config header for PSoC 6 port
[ports/cypress/psoc6/psoc6_default_config.h](ports/cypress/psoc6/psoc6_default_config.h)
so user doesn't have to create it
### Changes between Memfault SDK 0.32.0 and SDK 0.31.5 - Aug 8, 2022
#### π Improvements
- [ModusToolboxβ’οΈ Software](https://www.infineon.com/cms/en/design-support/tools/sdk/modustoolbox-software/)
port updates
- Added heartbeat metrics for heap and Wi-Fi performance tracking when using
the default port for
[CAT1A (PSoCβ’οΈ 6)](https://github.com/Infineon/mtb-pdl-cat1). See
[ports/cypress/psoc6/memfault_platform_core.c](ports/cypress/psoc6/memfault_platform_core.c)
for more details
- Fixed reboot reason reported when PSoC 6 is fully reset to report "Power On
Reset" instead of "Unknown"
- Zephyr port updates
- Memfault logs (eg `MEMFAULT_LOG_DEBUG()` etc) are now routed to the Zephyr
logging infrastructure. The typical set of Kconfig options for Memfault logs
are available (`CONFIG_MEMFAULT_LOG_LEVEL_WRN` etc). See details in
"Breaking Changes" below for enabling logs in your project.
- Added a new Kconfig option, `MEMFAULT_ZEPHYR_FATAL_HANDLER`, which can be
used to disable the Zephyr fault handler print facilities.
- Streamline support for nRF-Connect SDK based applications that don't need
the Memfault root certificates (eg nRF53 or nRF52 devices), via a new
Kconfig option `MEMFAULT_ROOT_CERT_STORAGE`, to avoid a nuisance build error
#### π₯ Breaking Changes
- Users will no longer see internal Memfault log output by default, but will
have to enable it explicitly to see the output:
```ini
# enable LOG
CONFIG_LOG=y
# not required- enabling the Memfault logging component enables including the
# log buffer in coredumps
CONFIG_MEMFAULT_LOGGING_ENABLE=y
# if on pre-v3.1.0 zephyr, you can choose either the default LOG v1
# implementation, or select a LOG2 mode to enable LOG2. on zephyr 3.1.0+, LOG
# v1 is removed and LOG v2 is now the only log implementation
# CONFIG_LOG2_MODE_DEFERRED=y
# make sure to select a log backend to see the output
CONFIG_LOG_BACKEND_UART=y
```
The log statements affected by this change are likely only the internal
Memfault SDK logs (`MEMFAULT_LOG_DEBUG()` etc), unless those macros are used
in the user application.
- Removed support for Zephyr LTS release 1.14 as it was superseded by
[LTS V2 almost a year ago now](https://www.zephyrproject.org/zephyr-lts-v2-release/).
A project using this release of Zephyr must target a memfault-firmware-sdk
release less than 0.32.0.
#### π Internal
- More logically grouped Kconfig settings in Zephyr example app's
[prj.conf](examples/zephyr/apps/memfault_demo_app/prj.conf)
- Fixed a few typos in particle port documentation
- Simplified compilation steps for the
[nRF91 sample test app](examples/nrf-connect-sdk/nrf9160/memfault_demo_app)
when compiling with older releases of the nRF Connect SDK and refreshed the
example to target the v2.0.2 release by default
- Updated default demo CLI commands to better align with
[our suggested integration test commands](https://mflt.io/mcu-test-commands).
The default set now looks like this:
```bash
mflt> help
clear_core: Clear an existing coredump
drain_chunks: Flushes queued Memfault data. To upload data see https://mflt.io/posting-chunks-with-gdb
export: Export base64-encoded chunks. To upload data see https://mflt.io/chunk-data-export
get_core: Get coredump info
get_device_info: Get device info
test_assert: Trigger memfault assert
test_busfault: Trigger a busfault
test_hardfault: Trigger a hardfault
test_memmanage: Trigger a memory management fault
test_usagefault: Trigger a usage fault
test_log: Writes test logs to log buffer
test_log_capture: Trigger capture of current log buffer contents
test_reboot: Force system reset and track it with a trace event
test_trace: Capture an example trace event
help: Lists all commands
```
### Changes between Memfault SDK 0.31.5 and SDK 0.31.4 - July 22, 2022
#### π Improvements
- Zephyr port: enable proper backtraces for Zephyr `__ASSERT()` macro on
aarch32/cortex_m. Prior to this fix, crashes from `__ASSERT()` triggering
would show an incorrect PC/LR for the active thread.
- Support for pre-release nRF Connect SDK v2.0.99 and Zephyr > v3.1:
- Upcoming nRF Connect SDK and Zephyr releases removed logging v1. Add build
support for these changes, and keep backwards compatibility for previous nRF
Connect SDK/Zephyr releases
- Correct an issue in the Memfault logging v2 backend, when the system was
invoked from an ISR context. This could happen due to a recent change, in
Memfault SDK v0.31.1, where the Zephyr fatal informational logs were output
from `memfault_platform_reboot()` by default. It did not impact the
collected backtrace, but it would show a nuisance `__ASSERT()` in the
console output, if `CONFIG_ASSERT=y`.
#### π Internal
- Fix a compilation issue in the Dialog example app from the removal of
`memfault_demo_cli_cmd_print_chunk()` in Memfault SDK release v0.31.4.
### Changes between Memfault SDK 0.31.4 and SDK 0.31.3 - July 19, 2022
#### π Improvements
- ESP32 port: add new Kconfig option, `CONFIG_MEMFAULT_AUTOMATIC_INIT`, that can
be explicitly set to `n` to skip automatically initializing the Memfault SDK
on boot. This can be useful if Memfault SDK initialization needs to be
deferred to application start.
- Zephyr port: add Kconfig options,
`CONFIG_MEMFAULT_INIT_PRIORITY`/`CONFIG_MEMFAULT_INIT_LEVEL_POST_KERNEL` for
controlling the Memfault SDK initialization level and priority. This can be
useful when needing Memfault to initialize earlier in the system startup
sequence, for example for diagnosing crashes in an early driver
initialization.
- Partial support, still in progress, for NRF Connect SDK + Zephyr v3.1:
- Remove reference to the now-removed Kconfig symbol,
`NET_SOCKETS_OFFLOAD_TLS` to enable building without warnings. **NOTE:** if
mbedtls is enabled (`CONFIG_MBEDTLS=y`), but is _not_ being used for HTTP
transfers (eg, mbedtls is used for security functions, but the device does
not use HTTP for transferring data), it may be necessary to explicitly set
`CONFIG_MEMFAULT_HTTP_USES_MBEDTLS=n`.
#### π Internal
- Zephyr port: remove an unused header file,
`ports/zephyr/common/memfault_zephyr_http.h`
- Remove `memfault_demo_cli_cmd_print_chunk()` demo function.
`memfault_data_export_dump_chunks()` can be used instead, which is intended to
be used with the "Chunks Debug" UI in the Memfault web application- see
[here](https://mflt.io/chunk-data-export) for more details
### Changes between Memfault SDK 0.31.3 and SDK 0.31.2 - July 8, 2022
#### π Improvements
- Support Zephyr v3.1+ by conditionally compiling out Logger v1 code, thanks to
@tejlmand for the patch!
### Changes between Memfault SDK 0.31.2 and SDK 0.31.1 - June 24, 2022
#### π Improvements
- Fixed a π in the
[Zephyr port HTTP implementation](ports/zephyr/common/memfault_platform_http.c),
where a socket file descriptor was leaked. This caused every HTTP operation
after the first to fail on Zephyr platforms. Thanks to @rerickson1 for the
fix!
- Added an update to improve the quality of stack traces when using
`MEMFAULT_ASSERT` with the TI ARM Clang Compiler
### Changes between Memfault SDK 0.31.1 and SDK 0.31.0 - June 16, 2022
#### π Improvements
- Enable the Zephyr fault handler (including console fault prints) after
Memfault handler runs. Can be disabled by implementing
`memfault_platform_reboot()`. See details in
[ports/zephyr/include/memfault/ports/zephyr/coredump.h](ports/zephyr/include/memfault/ports/zephyr/coredump.h)
#### π Internal
- Fixed compiler error in
[nRF91 sample test app](examples/nrf-connect-sdk/nrf9160/memfault_demo_app)
when compiling with the nRF Connect SDK v2.0.0 release
### Changes between Memfault SDK 0.31.0 and SDK 0.30.5 - June 6, 2022
#### π Improvements
- Added reference port for
[CAT1A (PSoCβ’οΈ 6)](https://github.com/Infineon/mtb-pdl-cat1) based MCUs using
the
[ModusToolboxβ’οΈ Software](https://www.infineon.com/cms/en/design-support/tools/sdk/modustoolbox-software/)
stack. For more details see [ports/cypress/psoc6](ports/cypress/psoc6)
directory.
- Added a convenience utility function for posting chunks using the Memfault
http client. See
[`memfault_http_client_post_chunk`](components/include/memfault/http/http_client.h#L101)
for more details!
#### π Internal
- Fixed compiler error in
[nRF91 sample test app](examples/nrf-connect-sdk/nrf9160/memfault_demo_app)
when compiling with the nRF Connect SDK 1.8 release
### Changes between Memfault SDK 0.30.5 and SDK 0.30.4 - May 24, 2022
#### π New Features
- ESP-IDF: add Memfault Compact Log example integration to the
[`examples/esp32`](examples/esp32) project
#### π Improvements
- ESP-IDF: Fix backtraces when using ESP-IDF v4.4+
- nRF-Connect SDK: enable the Kconfig flag `MEMFAULT_NRF_CONNECT_SDK` by default
when targeting the nrf52 + nrf53 series SOCs (previously only enabled by
default for nrf91 series)
#### π Internal
Added clarifications around licensing in ports and examples folders. See
[README](README.md) for more details.
### Changes between Memfault SDK 0.30.4 and SDK 0.30.3 - May 4, 2022
#### π Improvements
- minor updates to [`scripts/eclipse_patch.py`](scripts/eclipse_patch.py) to
support NXP's MCUXpresso IDE
### Changes between Memfault SDK 0.30.3 and SDK 0.30.2 - April 25, 2022
#### π Improvements
- Particle's Device OS port improvements:
- A user initiated reboot will now be recorded as a User Shutdown instead of a
Low Power reset
- A custom hardware_version can now be specified using the `hardware_version`
argument when initializing the Memfault library
- Default hardware version now uses the `PLATFORM_NAME` macro instead of
`PRODUCT_SERIES` macro
- Zephyr port improvements
- Exposed lower level APIs to Memfault's HTTP post implementation to allow
easier custom handling. See
[`ports/zephyr/include/memfault/ports/zephyr/http.h`](ports/zephyr/include/memfault/ports/zephyr/http.h)
for more details
#### π Internal
- Misc README documentation improvements
### Changes between Memfault SDK 0.30.2 and SDK 0.30.1 - April 12, 2022
- Fix a build regression on nRF Connect SDK v1.2 caused by the new Kconfig flag
`CONFIG_MEMFAULT_HTTP_USES_MBEDTLS`
### Changes between Memfault SDK 0.30.1 and SDK 0.30.0 - April 6, 2022
#### π Improvements
- Fix stack selection when in ISR context in some Zephyr versions
- Fix a build error when building Zephyr with `CONFIG_NORDIC_SECURITY_BACKEND`
enabled. New Kconfig flag `CONFIG_MEMFAULT_HTTP_USES_MBEDTLS` can be used to
manually control this configuration if necessary (default should be set
correctly in most cases)
#### π Internal
- Fix CI unit test build error from older version of gcc
### Changes between Memfault SDK 0.30.0 and SDK 0.29.1 - Mar 31, 2022
#### π New Features
- Added a Task Watchdog optional module. This can be used to monitor and trigger
a fault in the case of a task or thread that becomes stuck. See information in
[components/include/memfault/core/task_watchdog.h](components/include/memfault/core/task_watchdog.h)
for how to configure and use the module
#### π Improvements
- Fix compilation when building for a Zephyr target that does not have the
`CONFIG_ARM_MPU` flag enabled
- Fix compilation errors to enable compatibility with Zephyr v3.0.0
### Changes between Memfault SDK 0.29.1 and SDK 0.29.0 - Mar 16, 2022
#### π Internal
- Updated Memfault Diagnostic GATT Service (MDS) based on feedback. This service
can be used to transparently forward data collected by the SDK to a Bluetooth
Low Energy gateway and proxied to the cloud. See
[ports/include/memfault/ports/ble/mds.h](ports/include/memfault/ports/ble/mds.h#L1)
- Updated Mbed OS invoke commands to be more resilient against python package
conflicts
#### π₯ Breaking Changes
- If your project is based on Zephyr < 2.6, you now need to explicitly set
`CONFIG_OPENOCD_SUPPORT=y` in your `prj.conf`
### Changes between Memfault SDK 0.29.0 and SDK 0.28.2 - Feb 28, 2022
#### π New Features
- Added a port to Particle's Device OS. More details can be found in
[`ports/particle/README.md`](ports/particle/README.md).
- Added several more
[reboot reason options](components/include/memfault/core/reboot_reason_types.h#L16):
- `kMfltRebootReason_KernelPanic` for explicitly tracking fatal resets from
within a OS or RTOS
- `kMfltRebootReason_FirmwareUpdateError` for explicitly tracking resets due
to firmware update failures or rollbacks
#### π Improvements
- Added a convenience utility function for base64 encoding data in place. See
[`memfault_base64_encode_inplace`](components/include/memfault/util/base64.h#L35)
for more details!
- Fixed compiler error in ESP-IDF port when compiling for ESP32-S2 targets
#### π Internal
- Added configuration option,
[`MEMFAULT_COREDUMP_INCLUDE_BUILD_ID`](components/include/memfault/default_config.h#L1),
which can be used to disable storing the Build Id in a coredump.
- Fixed stale link in Mbed example app [`README`](examples/mbed/README.md).
- Added [utility script](scripts/create_arduino_library.py) that can be used to
"arduino-ify" the code in this repo.
- Fixed linter errors in python scripts after addition of flake8-bugbear linter
in CI.
- Fixed compiler error in
[nRF91 sample test app](examples/nrf-connect-sdk/nrf9160/memfault_demo_app)
when compiling with the nRF Connect SDK 1.2 release
### Changes between Memfault SDK 0.28.2 and SDK 0.28.1 - Feb 1, 2022
#### π Internal
- Updated
[nRF91 sample test app](examples/nrf-connect-sdk/nrf9160/memfault_demo_app) to
be compatible with nRF Connect SDK 1.9 release
- Updated python scripts to be compatible with new flake8 linter options
- Updated where `lcov` is sourced from when running unit tests in CI
### Changes between Memfault SDK 0.28.1 and SDK 0.28.0 - Jan 20, 2022
#### π Improvements
- Add an optional override flag to control the name used for Zephyr data
regions- see
[`ports/zephyr/common/memfault_zephyr_ram_regions.c`](ports/zephyr/common/memfault_zephyr_ram_regions.c).
Only needed for unusual Zephyr + Memfault configurations prior to Zephyr v2.7
(for example, nRF Connect SDK v1.7.1 with Memfault SDK v0.27.3+)
- Fix the STM32F7xx reboot reason port to correctly account for the internally
wired Pin Reset
- Fix a function prototype mismatch in the STM32L4 flash port (thanks to
@schultetwin for reporting this in #22!)
### Changes between Memfault SDK 0.28.0 and SDK 0.27.3 - Jan 4, 2022
#### π New Features
- Add support for setting string metrics, see
`memfault_metrics_heartbeat_set_string()` in
[`components/include/memfault/metrics/metrics.h`](components/include/memfault/metrics/metrics.h)
for the new API. See the [Memfault Docs](https://mflt.io/embedded-metrics) for
general information on using the metrics API.
- Updated `memfault_metrics_heartbeat_debug_print()` to also print current timer
values, instead of showing `0`. See
[`components/include/memfault/metrics/metrics.h`](components/include/memfault/metrics/metrics.h)
for details
#### π Improvements
- Update the STM32 QP/C example ([`examples/qp`](examples/qp)) to compile and
run correctly now
- Add instructions for exercising Memfault OTA in the ESP32 example, see the
"Testing OTA" section in
[`examples/esp32/README.md`](examples/esp32/README.md)
- Update the Memfault HTTP client to URL-encode query params when checking for
OTA updates (in the case of Device properties containing reserved characters,
eg `+`). Update the ESP port to check for reserved characters in query params
and emit an error
- Fix an outdated comment in `cmake/Memfault.cmake`, as reported in
[issue #21](https://github.com/memfault/memfault-firmware-sdk/issues/21)
(thank you @C47D !)
#### π Internal
- Update Python tests to use a mocked-out gdb instance
### Changes between Memfault SDK 0.27.3 and SDK 0.27.2 - Nov 22, 2021
#### π Improvements
- Fix a build error for the Nordic Connect SDK v1.7.99 development version
- Correct an error in header file include order in the Mynewt port
- Update the esp32 and zephyr examples to use `1.0.0-dev` instead of
`1.0.0+<6 digits of build id>` for the version specifier. Build id is no
longer required for symbol file reconciliation and the `+` character is a
reserved character for URI schemes; this impacted OTA release requests. See
this document for
[Memfault's recommended versioning strategy](https://docs.memfault.com/docs/platform/software-version-hardware-version/#software-version)
- Add a reboot reason port for the STM32F7xx family.
#### π Internal
- Re-run python `black` and `isort` formatters on python code
### Changes between Memfault SDK 0.27.2 and SDK 0.27.1 - Nov 5, 2021
#### π Improvements
- The Mynewt integration now supports the Memfault demo shell via
`mflt_shell_init()`, see the [Mynewt port README.md](ports/mynewt/README.md)
for details. Huge thanks to @t3zeng for providing this implementation!
- Add support for ESP-IDF v4.3.1. This update should fix the bootlooping issue
seen when using the port with v4.3.1+ of ESP-IDF.
- Add support for `LOG2` deferred mode on zephyr. This should fix bootloops when
enabling `LOG2`.
- Fix flipped args passed from `MEMFAULT_ASSERT_RECORD()` to
`MEMFAULT_ASSERT_EXTRA_AND_REASON()` (regression in v0.23.0). This affected
the `_extra` additional context value passed via this macro.
- Fix a typo in
[`ports/esp_idf/memfault/common/memfault_platform_http_client.c`](ports/esp_idf/memfault/common/memfault_platform_http_client.c)
which caused the OTA example to always return "OTA Update Available" when the
current version is already the latest.
#### π Internal
- Updated list of sample apps in [`examples/README.md`](examples/README.md)
### Changes between Memfault SDK 0.27.1 and SDK 0.27.0 - Oct 11, 2021
#### π Improvements
- Extended mynewt RTOS port to capture coredumps via a
[`os_coredump_cb`](ports/mynewt/src/memfault_platform_port.c) implementation
when `MEMFAULT_COREDUMP_CB=1`
#### π Internal
- Fixed a few compiler warnings emitted when compiling with clang
- Improved documentation for
[coredump config with nRF5 SDK](ports/nrf5_sdk/nrf5_coredump_regions.c)
### Changes between Memfault SDK 0.27.0 and SDK 0.26.1 - Oct 5, 2021
#### π Improvements
- Added support for using [compact logs](https://mflt.io/compact-logs) with the
Memfault [log subsystem](https://mflt.io/logging).
- Added port for mynewt RTOS to Memfault SDK. (Huge thanks to @t3zeng for the
help here!) See
[sdk/embedded/ports/mynewt](sdk/embedded/ports/mynewt/README.md) for more
details.
- Added support for
[Zephyr 2.7](https://docs.zephyrproject.org/latest/releases/release-notes-2.7.html)
release.
#### π Internal
- Fixed a missing symbol linker error for `memfault_fault_handler` that could
arise when compiling with `-flto`.
- Fixed a compiler error in `memfault_fault_handling_arm.c` that arose when
using certain versions of the Clang compiler.
- Cleaned up python scripts after enabling additional PEP8 naming convention
linters.
### Changes between Memfault SDK 0.26.1 and SDK 0.26.0 - Sept 20, 2021
#### π Internal
- Updated
[`modem_key_mgmt_exists`](ports/zephyr/ncs/src/memfault_nrf91_root_cert_storage.c)
API usage to be compatible with changes upcoming in nRF Connect SDK 1.8.
### Changes between Memfault SDK 0.26.0 and SDK 0.25.0 - Sept 15, 2021
#### π Improvements
- Added preview of the Memfault Diagnostic GATT Service (MDS). This service can
be used to transparently forward data collected by the SDK to a Bluetooth Low
Energy gateway and proxied to the cloud. See
[ports/include/memfault/ports/ble/mds.h](ports/include/memfault/ports/ble/mds.h#L1)
for more details!
- Added reference port of MDS for the DA1469x SDK to
[ports/dialog/da1469x/memfault_diagnostic_service.c](ports/dialog/da1469x/memfault_diagnostic_service.c#L1)
- Implemented [utility python script](scripts/eclipse_patch.py#L1) which can be
used for quickly adding a `memfault-firmware-sdk` port to an eclipse project.
For more details, run
```bash
python scripts/eclipse_patch.py --help
```
- Added example project demonstrating integration of Memfault on Cypress'
[CY8CKIT-064S0S2-4343W](https://www.cypress.com/documentation/development-kitsboards/psoc-64-standard-secure-aws-wi-fi-bt-pioneer-kit-cy8ckit)
running [Amazon-FreeRTOS](https://github.com/aws/amazon-freertos) publishing
data using an
[AWS IoT MQTT broker](https://docs.aws.amazon.com/freertos/latest/userguide/getting_started_cypress_psoc64.html).
For more details about how to run the Memfault example, see
[examples/cypress/CY8CKIT-064S0S2-4343W/README.md](examples/cypress/CY8CKIT-064S0S2-4343W/README.md).
- Fixed a compiler warning emitted when using TI's GCC Compiler as reported by
@albertskog in
[issue #18](https://github.com/memfault/memfault-firmware-sdk/issues/18)
#### π Internal
- Apply some suggestions emitted by `flake8-pytest-style` linter to
[scripts/tests/test_memfault_gdb.py](scripts/tests/test_memfault_gdb.py).
### Changes between Memfault SDK 0.25.0 and SDK 0.24.2 - August 30, 2021
#### π Improvements
- Added a workaround to
[`event_storage.h`](components/include/memfault/core/event_storage.h) to
prevent compilation errors when using
[the unity test framework](http://www.throwtheswitch.org/unity) to generate
mocks.
- Updated [`makefiles/MemfaultWorker.mk`](makefiles/MemfaultWorker.mk) to use
`sort` to guarantee a deterministic file list order irrespestive of
[make version](https://savannah.gnu.org/bugs/index.php?52076). A consistent
order is useful for
[reproducible builds](https://mflt.io/reproducible-builds).
- Make use of `__has_include()` in Zephy port to remove the requirement of
always needing to create`memfault_platform_config.h`,
`memfault_metrics_heartbeat_config.def`, &
`memfault_trace_reason_user_config.def` for a build to compile. To force a
compile failure instead when any of these files do not exist, a user can set
[`CONFIG_MEMFAULT_USER_CONFIG_SILENT_FAIL=n`](ports/zephyr/Kconfig)
#### π Internal
- The current version of the Memfault Firmware SDK can now be accessed
programmatically from the
[`memfault/version.h`](components/include/memfault/version.h).
- Improved HTTP util parser when dealing with malformed status codes
- Updated
[nRF91 sample test app](examples/nrf-connect-sdk/nrf9160/memfault_demo_app) to
be compatible with nRF Connect SDK 1.6
### Changes between Memfault SDK 0.24.2 and SDK 0.24.1 - August 17, 2021
#### π Improvements
- Added a new utility API, `memfault_packetizer_set_active_sources`, to the
[data_packetizer](components/include/memfault/core/data_packetizer.h) module,
which let's one control the exact data sources that will get packetized. See
description in the header for more details
- Port Improvements:
- NXP i.MX RT102x
- [rich reboot reason info derived from SRC_SRSR register](ports/nxp/rt1021/src_reboot_tracking.c)
### Changes between Memfault SDK 0.24.1 and SDK 0.24.0 - August 9, 2021
#### π Improvements
- Applied suggestions from @elliot-wdtl for the Zephyr ports
([#15](https://github.com/memfault/memfault-firmware-sdk/pull/15)):
- Updated software watchdog port to make use of `MEMFAULT_SOFTWARE_WATCHDOG`
macro
- Applied suggestions from @ioannisg & @mbolivar-nordic in
([#14](https://github.com/memfault/memfault-firmware-sdk/pull/14)) to change
the KConfig options used to select `CONFIG_MEMFAULT_HTTP_ENABLE` &
`CONFIG_MEMFAULT_ROOT_CERT_STORAGE_NRF9160_MODEM` &
`CONFIG_MEMFAULT_NRF_CONNECT_SDK` when using nRF91 targets.
#### π Internal
- Added `export` command to the demo cli to better mirror
[our suggested integration test commands](https://mflt.io/mcu-test-commands)
#### π₯ Breaking Changes
- If you are were using a custom nRF91 based board config (i.e neither
`BOARD_NRF9160DK_NRF9160NS` or `BOARD_THINGY91_NRF9160NS`), the following
KConfig options will now be enabled by default. The following can be added to
your `prj.conf` to restore the original behavior:
- `CONFIG_MEMFAULT_HTTP_ENABLE=n`
- `CONFIG_MEMFAULT_NRF_CONNECT_SDK=n`
- `CONFIG_MEMFAULT_ROOT_CERT_STORAGE_TLS_CREDENTIAL_STORAGE=y`
### Changes between Memfault SDK 0.24.0 and SDK 0.23.0 - July 27, 2021
#### π Improvements
- Added "compact log" support to trace events. When enabled, the format string
will be removed at compile time from calls to `MEMFAULT_TRACE_EVENT_WITH_LOG`
and an integer along with arguments will be serialized instead. The actual
string will recovered and formatted when it arrives in the Memfault cloud.
This leads to a massive reduction in space & bandwidth needed to send trace
events. For more details about how to set up,
[check out this guide!](https://mflt.io/compact-logs)
- Fixed a `-Wshadow` compiler error that would arise in
[`memfault_coredump_regions_armv7.c`](components/panics/src/memfault_coredump_regions_armv7.c)
when `MEMFAULT_COLLECT_MPU_STATE` was enabled
- Updated debug print utility in
[`memfault_coredump_storage_debug.c`](components/panics/src/memfault_coredump_storage_debug.c)
to guard against potentially printing an uninitialized string.
- Removed unnecessary extra argument from `MEMFAULT_SOFTWARE_WATCHDOG`
#### π₯ Breaking Changes
- If you were already using `MEMFAULT_SOFTWARE_WATCHDOG`, you will need to
update your call site invocations to remove the argument being passed. i.e
```diff
- MEMFAULT_SOFTWARE_WATCHDOG(0);
+ MEMFAULT_SOFTWARE_WATCHDOG();
```
### Changes between Memfault SDK 0.23.0 and SDK 0.22.0 - July 8, 2021
#### π Improvements
- Support for Dialog DA1469x chip family (Huge thanks to @iandmorris for the
help here!)
- Example eclipse project and more details about how to add the port to any
DA1469x based project [can be found here](examples/dialog/da1469x).
- Added a simple utility to track heap allocations. This can be used to more
easily debug what allocations led to out of memory situations with the
addition of only several hundred bytes to a coredump capture. For more
details, see
[`memfault/core/heap_stats.h`](components/include/memfault/core/heap_stats.h)
- For FreeRTOS users, automatic tracking of heap allocations can be enabled
with the Memfault port. To enable, see the "Heap Tracking" section in the
README at [ports/freertos/](ports/freertos).
- Added new convenience utilities for asserting when a watchdog event is
detected,
[`MEMFAULT_SOFTWARE_WATCHDOG`](components/include/memfault/panics/assert.h#L65).
This will result in the issue in the Memfault UI being classified for as a
"Software Watchdog" instead of an "Assert" for easier classification.
- Fixed a π in [Zephyr port](ports/zephyr/common/memfault_platform_metrics.c)
where cpu runtime metrics were never getting reset after a heartbeat was
collected leading to always increasing runtime values getting reported.
#### π Internal
- Improved support for running [tests](tests/) against different versions of
clang and gcc and enabled more address sanitizers such as
[`-fsanitize=undefined`](https://interrupt.memfault.com/blog/ubsan-trap)
- Misc documentation edits
### Changes between Memfault SDK 0.22.0 and SDK 0.21.1 - June 17, 2021
#### π Improvements
- Reduced code space utilized by metric subsystem by transitioning from a string
representation of metric names to an enum representation.
- Updated [`memfault_gdb.py`](scripts/memfault_gdb.py) helper script to use
latest Memfault API for uploading symbol files.
- Removed "DST Root CA X3" from the required Memfault
[root certificate list](components/include/memfault/http/root_certs.h) as
there is no infrastructure that relies on it anymore.
- Updated PEM representation of all root certificates to include newlines after
64-character intervals to improve portability with various TLS stacks.
#### π Internal
- Updated [`fw_build_id.py`](scripts/fw_build_id.py) script. The same script can
now also be installed via [`pypi`](https://pypi.org/project/mflt-build-id/):
`pip install mflt_build_id`
- Various improvements to example app documentation
### Changes between Memfault SDK 0.21.1 and SDK 0.21.0 - June 9, 2021
#### π Improvements
- Zephyr / nRF Connect SDK port:
- Made periodic upload a named choice,
`MEMFAULT_HTTP_PERIODIC_UPLOAD_CONTEXT`, so the default can be overridden
from other Kconfig files.
- Added prompt text for `MEMFAULT_HTTP_DEDICATED_WORKQUEUE_STACK_SIZE`
### Changes between Memfault SDK 0.21.0 and SDK 0.20.2 - June 8, 2021
#### π Improvements
- Zephyr / nRF Connect SDK port:
- `CONFIG_MEMFAULT_NRF_CONNECT_SDK` is now only enabled by default when
`CONFIG_MEMFAULT=y`
- `CONFIG_DEBUG_THREAD_INFO=y` is now selected by default (in prep for
deprecation of `CONFIG_OPENOCD_SUPPORT`)
- Added new option (`CONFIG_MEMFAULT_USER_CONFIG_ENABLE=y`) which can be used
to remove requirement of providing any user specific configuration.
- Added two choices for periodic posting of memfault data:
- `CONFIG_MEMFAULT_HTTP_PERIODIC_UPLOAD_USE_SYSTEM_WORKQUEUE`. This is the
default and matches previous release behavior of posting data to Memfault
from the system work queue
- `CONFIG_MEMFAULT_HTTP_PERIODIC_UPLOAD_USE_DEDICATED_WORKQUEUE` This is a
new option which can be used to post data from a dedicated worker queue.
This can be useful if the network stack may block for extended periods of
time which would stall other system work queue jobs from getting
processed.
#### π₯ Breaking Changes
- The Zephyr & nRF Connect SDK ports will now only enable the `MEMFAULT_SHELL`
by default when the Zephyr shell is enabled. `CONFIG_SHELL=y` must now be
enabled explicitly in your `prj.conf` for the Memfault Shell to be enabled.
### Changes between Memfault SDK 0.20.2 and SDK 0.20.1 - June 4, 2021
#### π Internal
- Updated `sMemfaultBuildIdStorage` structure to track the build id length used
for event serialization and updated [`fw_build_id.py`](scripts/fw_build_id.py)
script to extract information.
### Changes between Memfault SDK 0.20.1 and SDK 0.20.0 - May 28, 2021
#### π Improvements
- Zephyr / nRF Connect SDK port:
- Replaced `MEMFAULT_DEFAULT_REBOOT_REASON_IMPL` Kconfig option with
`MEMFAULT_REBOOT_REASON_GET_CUSTOM` and updated default configuration for
the nRF Connect SDK. This fixes an issue resulting in the
[generic memfault_reboot_reason_get](ports/zephyr/common/memfault_platform_core.c#L53)
getting linked rather than the
[nRF Connect SDK port](ports/zephyr/ncs/src/nrfx_pmu_reboot_tracking.c#L139).
### Changes between Memfault SDK 0.20.0 and SDK 0.19.0 - May 27, 2021
#### π Improvements
- Updated
[memfault_fault_handling_arm.c](components/panics/src/memfault_fault_handling_arm.c)
to work around a compiler bug when using 6.x of the GNU ARM Toolchain
- Port Improvements:
- SAML10/SAML11
- [rich reboot reason info derived from RCAUSE register](ports/atmel/saml1x/rcause_reboot_tracking.c#L1)
- Updated [esp-idf port](ports/esp_idf) to streamline integrations making use
of the [amazon-freertos](https://github.com/aws/amazon-freertos)
- Zephyr
- Added several Kconfig options for better control over information
collected in a coredump:
- `CONFIG_MEMFAULT_COREDUMP_COLLECT_DATA_REGIONS` to enable/disable
collection of `.data` region
- `CONFIG_MEMFAULT_COREDUMP_COLLECT_BSS_REGIONS` to enable/disable
collection of `.bss` region
- `CONFIG_MEMFAULT_COREDUMP_STORAGE_CUSTOM=y` can be used to opt out of
the default RAM backed coredump implementation and provide a custom one
in the port.
- Reduced instruction cycles required to update a
[heartbeat metric](metrics/src/memfault_metrics.c)
- Events will now store an abbreviated build id when serialized
### Changes between Memfault SDK 0.19.0 and SDK 0.18.0 - May 19, 2021
#### π Improvements
- Added support for collecting additional register information when a Hardfault
takes place when using the Zephyr port. This information will be decoded and
displayed in the Memfault UI in the "Exceptions" tab.
- Updated
[`buffered_coredump_storage.h`](ports/include/memfault/ports/buffered_coredump_storage.h)
to use `memmov` instead of `memcpy` since `dst` and `src` buffers may overlap
when all of `.bss` is saved in a coredump capture.
- Added a new Kconfig option to the Zephyr port,
`CONFIG_MEMFAULT_METRICS_EXTRA_DEFS_FILE=y`, which causes
`memfault_metrics_heartbeat_extra.def` to be included in the metric
definitions. This can be utilized by a third party consumer of Zephyr to more
easily extend the default heartbeat metrics collected when using memfault.
#### π Internal
- Updated [`memfault_gdb.py`](scripts/memfault_gdb.py) helper script to use
latest Memfault API for uploading symbol files.
#### π₯ Breaking Changes
- If you are using [nRF Connect SDK / Zephyr port](ports/zephyr/ncs/), the SDK
will now automatically be picked up as a Zephyr Module! You will need to make
two changes:
1. Remove the `ZEPHYR_EXTRA_MODULES` addition from your projects
CMakeLists.txt, i.e
```diff
--- a/your_application/CMakeLists.txt
+++ b/your_application/CMakeLists.txt
@@ -3,7 +3,6 @@
- list(APPEND ZEPHYR_EXTRA_MODULES $ENV{ZEPHYR_BASE}/../modules/memfault-firmware-sdk/ports/nrf-connect-sdk)
```
2. Add `CONFIG_MEMFAULT_NRF_CONNECT_SDK=y` to your projects `prj.conf`
### Changes between Memfault SDK 0.18.0 and SDK 0.17.1 - May 14, 2021
#### π Improvements
- Support for Dialog DA145xx chip family (Huge thanks to @iandmorris for the
help here!)
- GCC & Keil based demo application for the DA14531 & DA14585/DA14586
[can be found here](examples/dialog/da145xx).
- Ports for applications using the DA145xx SDK
[can be found here](ports/dialog/da145xx).
- ESP32 port improvements
- Added example of periodically posting data to memfault via a background
task.
- Added a new Kconfig option, `MEMFAULT_COREDUMP_USE_OTA_SLOT=y` which can be
used to save a coredump in an unused OTA slot rather than the default
coredump partition. This can be useful in situations where Memfault is being
integrated after a product has shipped and updating the partition table is
no longer possible.
- Added `MEMFAULT_EVENT_STORAGE_NV_SUPPORT_ENABLED=0` which can be used to
disable dynamic configuration of non-volatile storage. Setting this flag when
the non-volatile event storage API is not in use will save several hundred
bytes of codespace.
- Hardened
[memfault_http_parse_response()](components/http/src/memfault_http_utils.c)
utility to parse HTTP responses with headers that exceed a length of 128 bytes
- Fixed a π in`memfault_log_save_preformatted()` leading to invalid logs being
reported when attempting to save log lines > 128 bytes. (thanks @alvarop for
the report!)
- Added a convenience API,
[`memfault_create_unique_version_string()`](components/include/memfault/core/platform/device_info.h),
which can be used for easily appending a build id on the software version
reported.
#### π Internal
- Updates to demo cli:
- `MEMFAULT_DEMO_SHELL_RX_BUFFER_SIZE` can be used to shrink the maximum
amount of bytes that can be buffered on a single line.
- Made `memfault_demo_shell_commands.h` public and moved it to
[`memfault/demo/shell_commands.h`](components/include/memfault/demo/shell_commands.h)
to facilitate easier overriding of the default set of commands used in a
build.
### Changes between Memfault SDK 0.17.1 and SDK 0.17.0 - April 30, 2021
#### π Improvements
- ESP32 Example App Updates:
- Added `export` command to demonstrate how data can be dumped via the console
- Added
[Memfault Build ID](examples/esp32/apps/memfault_demo_app/CMakeLists.txt) to
example app as a reference
- Fixed a π in
[`memfault_platform_sanitize_address_range()`](ports/templates/memfault_platform_port.c)
template example.
- Refactored nRF5 example app to mirror integration steps listed in the
[latest integration guide](https://mflt.io/cortex-m-getting-started)
- Added a new configuration option, `MEMFAULT_PLATFORM_FAULT_HANDLER_CUSTOM`,
which can be used to explicitly disable the stub
[`memfault_platform_fault_handler()` implementation](components/panics/src/memfault_fault_handling_arm.c)
- Improve the quality of backtrace recovery for asserts when using Arm Compiler
5 by removing use of noreturn function attribute for
`memfault_fault_handling_assert()` declaration.
### Changes between Memfault SDK 0.17.0 and SDK 0.16.1 - April 26, 2021
#### π New Features
- Added support for collecting ARMv7-M MPU regions as part of coredump
collection. To enable, set
[`MEMFAULT_COLLECT_MPU_STATE=1`](components/include/memfault/default_config.h#L1)
in your `memfault_platform_config.h`. Once enabled, the MPU will be
automatically analyzed for configuration errors and results will be presented
in the "MPU" tab in the Memfault UI for a coredump.
- Added a new API,
[`memfault_log_trigger_collection`](components/include/memfault/core/log.h#L143),
which can be used to "freeze" the current contents of the log buffer when
unexpected behavior takes place on the device for upload to Memfault. The logs
can then be [uploaded to Memfault](https://mflt.io/data-to-cloud) just like
any other data and appear in the UI for a device. For more details about the
Memfault log subsystem see <https://mflt.io/logging>
#### π Improvements
- Fixed compilation error when compiling the panics component against Cortex-M0+
with ARM Compiler 5
- Added several
[default heartbeat metrics to the Zephyr port](ports/zephyr/config/memfault_metrics_heartbeat_zephyr_port_config.def)
around timer task stack usage and execution time.
#### π Internal
- Refreshed esp32 example app README and updated instructions for the v3.3.5
esp-idf
- Added `test_log` & `trigger_logs` CLI commands to nRF5 & Zephyr example
applications to exercise new log collection functionality.
### Changes between Memfault SDK 0.16.1 and SDK 0.16.0 - April 12, 2021
#### π Improvements
- Fixed a π in Zephyr port leading to a compilation error with nRF Connect SDK
when `CONFIG_DOWNLOAD_CLIENT=y` & `CONFIG_MEMFAULT_NRF_SHELL=y`
- Dialog DA1468x
[QSPI coredump storage port](ports/dialog/da1468x/qspi_coredump_storage.c#L1)
updates:
- default storage partition (`NVMS_LOG_PART`) can be overridden
`MEMFAULT_PLATFORM_COREDUMP_STORAGE_PARTITION`
- Max space used within partition can be limited using
`MEMFAULT_PLATFORM_COREDUMP_STORAGE_MAX_SIZE_BYTES`
- Updated [zephyr example application](examples/zephyr/README.md) and docs to be
compatible with v2.5 release.
#### π Internal
- Added `memfault_log_save` stub to unit tests to facilitate easier testing of
logging dependencies
- Improved correctness of strategy used to capture `msp` & `psp` register in
Cortex-M fault handler.
- Added new convenience utility,
`memfault_circular_buffer_read_with_callback()`, to
[circular buffer api](components/include/memfault/util/circular_buffer.h).
### Changes between Memfault SDK 0.16.0 and SDK 0.15.0 - April 8, 2021
#### π Improvements
- Added new convenience APIs, `memfault_event_storage_bytes_used()` &
`memfault_event_storage_bytes_free()`, to
[event storage module](components/include/memfault/core/event_storage.h#L1).
- Added a new configuration option,
[`MEMFAULT_ASSERT_HALT_IF_DEBUGGING_ENABLED`](components/include/memfault/default_config.h#L1).
By default, it is off, but when enabled will cause
`memfault_platform_halt_if_debugging()` to be called prior to triggering the
full coredump capture.
- Fixed a type conversion compiler warning emitted by IAR and ARMCC in
[`resetreas_reboot_tracking.c`](ports/nrf5_sdk/resetreas_reboot_tracking.c#L1).
- Port Updates:
- Dialog DA1468x
- [QSPI coredump storage port](ports/dialog/da1468x/qspi_coredump_storage.c#L1)
- [Added `memfault_platform_reboot_tracking_boot()` implementation](ports/dialog/da1468x/reset_stat_reboot_tracking.c)
#### π Internal
- Removed "Heartbeat triggered!" print when
`memfault_metrics_heartbeat_debug_trigger()` is called
#### π₯ Breaking Changes
- If you were using
[`ports/dialog/da1468x/reset_stat_reboot_tracking.c`](ports/dialog/da1468x/reset_stat_reboot_tracking.c),
the `memfault_platform_reboot_tracking_boot()` implementation from your
`memfault_platform_port.c` file can be removed and the one in the port can be
picked up.
### Changes between Memfault SDK 0.15.0 and SDK 0.14.0 - March 24, 2021
#### π Improvements
- Added a new convenience API,
[`memfault_device_info_dump()`](components/include/memfault/core/device_info.h#L1)
which can be used to pretty print the device information populated in the
`memfault_platform_get_device_info()` dependency function.
- Added
[`memfault_platform_sanitize_address_range()`](components/include/memfault/panics/platform/coredump.h#L95).
This functrions is intended for use in your
`memfault_platform_coredump_get_regions()` implementation when capturing
regions that are not defined at compile time.
- Fixed a π with `memfault_coredump_storage_debug_test_*` which would generate
a false positive test failure when the coredump storage area was not divisible
by 16.
- C++ header guards are now included in all headers in the ports/ directory for
easier integration in mixed C/C++ environments
- Port Updates:
- Dialog DA1468x: Added patch which can be used to add
[GNU Build ID](ports/dialog/da1468x/gnu-build-id.patch#L1)
- Added support for FreeRTOS 8 to the [FreeRTOS port](ports/freertos/).
- STM32H7 family / STM32CubeH7:
- [rich reboot reason info derived from RCC RSR register](ports/stm32cube/h7/rcc_reboot_tracking.c#L1)
- STM32WBxx family / STM32CubeWB:
- [internal flash coredump storage](ports/stm32cube/wb/flash_coredump_storage.c#L1)
- Improved configurability of
[RAM backed coredump storage port](ports/panics/src/memfault_platform_ram_backed_coredump.c#L1)
with new configuration options for to control where RAM is allocated, what
memory regions are collected, and stack size to collect.
- Added additional comments to [`ports/templates`](ports/templates) directory to
facilitate porting.
#### π Internal
- [Demo CLI Shell commands](components/demo/src/memfault_demo_shell_commands.c#L50)
are now defined as weak symbols so they can be overridden with a custom set.
#### π₯ Breaking Changes
- If you were using the
[`ports/emlib/msc_coredump_storage.c`](ports/emlib/msc_coredump_storage.c)
port in your system, you must add
`MEMFAULT_PLATFORM_COREDUMP_STORAGE_USE_FLASH=1` to your
`memfault_platform_config.h`
- If you were using `ports/panics/src/memfault_platform_ram_backed_coredump.c`:
- [`memfault_platform_sanitize_address_range()`](components/include/memfault/panics/platform/coredump.h)
must be implemented.
- The default coredump storage RAM size was changed from 700 to 1024 bytes so
more information can be captured. The original size can be restored by
setting `MEMFAULT_PLATFORM_COREDUMP_STORAGE_RAM_SIZE 700` in your
`memfault_platform_config.h`
### Changes between Memfault SDK 0.14.0 and SDK 0.13.1 - March 18, 2021
#### π Improvements
- Renamed `platforms` folder to [`examples`](examples/) to better capture that
the folder contains "example" integrations of the Memfault SDK into hello
world style apps from various SDKs
- Port Updates:
- Zephyr: added a
[software watchdog port](ports/zephyr/common/memfault_software_watchdog.c#L1)
which can be used for capturing coredumps ahead of a hardware watchdog
reset.
- EFR32:
[rich reboot reason info derived from EMU_RSTCAUSE register](ports/emlib/rmu_reboot_tracking.c#L1)
- Updated [nRF9160 Demo Application](examples/nrf-connect-sdk/nrf9160) to be
compatible with
[nRF Connect SDK 1.5](https://github.com/nrfconnect/sdk-nrf/tree/v1.5-branch)
- Added support for capturing coredumps with GDB from GNU GCC 4.9 to
[`memfault_gdb.py`](scripts/memfault_gdb.py)
#### π Internal
- Added support for automatically capturing logs with Zephyr when logging in
synchronous mode `CONFIG_LOG_IMMEDIATE=y`
- Unified nomenclature for references to the "Project Key" used to push data to
Memfault
#### π₯ Breaking Changes
If you were linking any files from the `platforms` folder into your project, the
path needs to be updated to `examples`:
```diff
- ${MEMFAULT_FIRMWARE_SDK}/platforms/
+ ${MEMFAULT_FIRMWARE_SDK}/examples/
```
### Changes between Memfault SDK 0.13.1 and SDK 0.13.0 - March 10, 2021
#### π Improvements
- Reference platform API implementations for DA1468x:
- [rich reboot reason info derived from RESET_STAT_REG register](ports/dialog/da1468x/reset_stat_reboot_tracking.c#L1)
- Fixed a π that led to a unit test failure in `test_coredump_storage_debug` in
some environments where `const` arrays were getting dynamically built on the
stack at runtime.
- Worked around a limitation in GNU GCC 4.9's extended ASM to fix a compiler bug
that would arise when compiling `memfault_fault_handling_arm.c` for Cortex-M0
targets.
- Added a new [`ports/templates`](ports/templates) folder that can be
copy/pasted into a project and used as a starting point for a Memfault port!
### Changes between Memfault SDK 0.13.0 and SDK 0.12.0 - March 4, 2021
#### π Improvements
- Improved documentation in [README](README.md) and [components](components/)
directories.
- Added coredump capture support to panics component for the AARCH64
architecture.
- Reference platform API implementations for the following MCUs/SDKs:
- STM32WBxx family / STM32CubeWB:
- [rich reboot reason info derived from RCC CSR register](ports/stm32cube/wb/rcc_reboot_tracking.c#L1)
- nRF5 SDK
- [app_timer based port for metric dependencies](ports/nrf5_sdk/memfault_platform_metrics.c#L1)
- [`fw_build_id.py`](scripts/fw_build_id.py) script improvements
- script is now compatible with Python2 environments.
- Added new `--dump <chars>` option to simplify extraction of build id in
automation, i.e:
```bash
python scripts/fw_build_id.py <ELF> --dump 7
3a3e81f
```
#### π Internal
- Started work to enable automatic capture of logs in a coredump for the Zephyr
& nRF Connect SDK.
#### π₯ Breaking Changes
- If you were linking `memfault_nrf5_coredump.c` in your project:
- the file has been split into `nrf5_coredump_regions.c` (which defines the
regions to collect in a coredump) & `nrf5_coredump_storage.c` (which
implements the port for saving coredumps to internal flash). Both of these
files must be added to your build system.
- Linker script names for region to save coredump to and regions to collect
need to be updated:
- Update`__CoreStart` & `__MemfaultCoreStorageEnd` to
`__MemfaultCoreStorageStart` & `__MemfaultCoreStorageEnd` in linker
script.
- Update `__MfltCoredumpRamStart` & `__MfltCoredumpRamEnd` to
`__MemfaultCoredumpRamStart` & `__MemfaultCoredumpRamEnd`
### Changes between Memfault SDK 0.12.0 and SDK 0.11.4 - Feb 14, 2021
#### π Improvements
- The SDK now includes a central configuration header at
[`components/include/memfault/config.h`](components/include/memfault/config.h#L1).
Platform overrides can be defined in `memfault_platform_config.h`
- Reference platform API implementations for the
[nRF5 SDK](https://infocenter.nordicsemi.com/topic/struct_sdk/struct/sdk_nrf5_latest.html)
- [rich reboot reason info derived from RESETREAS register](ports/nrf5_sdk/resetreas_reboot_tracking.c#L1)
- [internal flash coredump storage](ports/nrf5_sdk/memfault_nrf5_coredump.c#L1)
- All headers for Memfault "components" can now be found under
[`components/include/memfault/`](components/include/memfault/). This
simplifies adding components to build systems as only a single path is now
needed!
#### π₯ Breaking Changes
- You must create the file `memfault_platform_config.h` and add it to your
include path. This file can be used in place of compiler defines to tune the
SDK configurations settings.
- If you are not using a Memfault
[build system helper](README.md#add-sources-to-build-system)
1. Remove all include paths at
`${MEMFAULT_FIRMWARE_SDK}/components/${COMPONENT}/include`
2. Add include path `${MEMFAULT_FIRMWARE_SDK}/components/include` to your
build system
- If you were linking any of the nRF5 example app files in your project, the
directory has changed:
```diff
- ${MEMFAULT_FIRMWARE_SDK}/nrf5/libraries/memfault/platform_reference_impl/memfault_platform_reboot_tracking.c
+ ${MEMFAULT_FIRMWARE_SDK}/ports/nrf5_sdk/resetreas_reboot_tracking.c
- ${MEMFAULT_FIRMWARE_SDK}/nrf5/libraries/memfault/platform_reference_impl/memfault_platform_coredump.c
+ ${MEMFAULT_FIRMWARE_SDK}/ports/nrf5_sdk/memfault_nrf5_coredump.c
```
### Changes between Memfault SDK 0.11.4 and SDK 0.11.3 - Feb 4, 2021
- ESP8266 Updates
- Added new Kconfig option which can be set via `make menuconfig` and be used
to disable the Memfault integration, `CONFIG_MEMFAULT=n`.
- Fixed a π leading to a compilation error when
both`CONFIG_USING_ESP_CONSOLE=n` and `CONFIG_MEMFAULT_CLI_ENABLED=n`
- Added default implementations for `MEMFAULT_GET_LR()`, `MEMFAULT_GET_PC()`,
and `MEMFAULT_BREAKPOINT()` to
[`compiler_gcc.h`](components/include/memfault/core/compiler_gcc.h) to
facilitate compilations of the SDK against other architectures.
### Changes between Memfault SDK 0.11.3 and SDK 0.11.2 - Jan 31, 2021
#### π Improvements
- Reference platform API implementations for the following MCUs/SDKs:
- nRF Connect SDK
- Added support for nRF Connect SDK v1.3.x
- Added support for FOTA with Memfault. See
[`memfault_fota_start()`](ports/nrf-connect-sdk/zephyr/include/memfault/nrfconnect_port/fota.h)
for more details
- Zephyr
- Added implementations for `memfault_platform_metrics_timer_boot()` &
`memfault_platform_get_time_since_boot_ms()` memfault dependencies to
Zephyr port. A custom implementation can still be provided by
setting`MEMFAULT_METRICS_TIMER_CUSTOM=y`
- Metrics support is now enabled by default when `CONFIG_MEMFAULT=y` and can
be disabled by setting `CONFIG_MEMFAULT_METRICS=n`
- Added support for periodically uploading Memfault data in the background.
This is off by default and can be enabled with the
`CONFIG_MEMFAULT_HTTP_PERIODIC_UPLOAD=y` option
- Fixed a π that could lead to an invalid coredump being sent to Memfault when
`memfault_packetizer_abort()` was called after a coredump was partially sent.
### Changes between Memfault SDK 0.11.2 and SDK 0.11.1 - Jan 21, 2021
#### π Improvements
- Added support for nRF Connect SDK v1.2.x and updated the
[integration guide](https://mflt.io/nrf-connect-sdk-integration-guide)
accordingly.
### Changes between Memfault SDK 0.11.0 and SDK 0.10.1 - Jan 19, 2021
#### π New Features
- Added full support for the ESP8266 (Tensilica Xtensa LX106) MCU architecture!
A step-by-step integration guide can be found
[here](https://mflt.io/esp8266-tutorial) and the port to the ESP8266 RTOS SDK
can be found [here](ports/esp8266_sdk/).
#### π Improvements
- Added a convenience header for picking up includes for all Memfault
components. If you are using the
[build system helpers](README.md#add-sources-to-build-system), this path will
be picked up automatically.
```c
#include "memfault/components.h"
// call to any Memfault API in the components folder
```
- Fixed a π leading to Root CAs not get loaded correctly when using the nRF
Connect SDK port and the `MEMFAULT_ROOT_CERT_STORAGE_TLS_CREDENTIAL_STORAGE=y`
Kconfig option.
- Applied suggestions from @rerickson1 for the Zephyr and nRF Connect SDK ports:
- [`CONFIG_MEMFAULT_METRICS=y`](https://github.com/memfault/memfault-firmware-sdk/pull/8)
can now be used to compile the metrics component into the Zephyr and nRF
Connect SDK ports.
- [`CONFIG_MEMFAULT=y`](https://github.com/memfault/memfault-firmware-sdk/pull/7)
must now be specified to enable the Memfault integration.
#### π Internal
- Refactored the [nRF Connect SDK port](ports/nrf-connect-sdk) to build directly
on top of the [zephyr port](ports/zephyr) reducing code duplication and
facilitate the rollout of additional features to both SDKs at the same time
moving forward.
#### π₯ Breaking Changes
- If you are using a Memfault
[build system helper](README.md#add-sources-to-build-system) _and_ not using
the trace or metrics functionality, you will now need to create a
`memfault_trace_reason_user_config.def` or
`memfault_metrics_heartbeat_config.def` file, respectively, and add it to your
include path.
- When using the Zephyr port, the memfault integration must be enabled
explicitly by adding `CONFIG_MEMFAULT=y` to your `prj.conf`
### Changes between Memfault SDK 0.10.1 and SDK 0.10.0 - Jan 10, 2021
#### π Improvements
- Reference platform API implementations for the following MCUs/SDKs:
- STM32F4 family / STM32CubeF4:
- [rich reboot reason info derived from RCC CSR register](ports/stm32cube/f4/rcc_reboot_tracking.c)
- STM32L4 family / STM32CubeL4
- [rich reboot reason info derived from RCM SRS register](ports/stm32cube/l4/rcc_reboot_tracking.c)
- nRF Connect SDK
- [rich reboot reason info derived from PMU RESETREAS register](ports/nrf-connect-sdk/nrfx/pmu_reboot_tracking.c)
- refactored HTTP port to support multiple backing storage strategies for
root certificates. See
[`MEMFAULT_ROOT_CERT_STORAGE_*`](ports/nrf-connect-sdk/zephyr/Kconfig)
Kconfig options for more details
- Added support for Memfault OTA downloads. See
[memfault_nrfconnect_port_ota_update()](ports/nrf-connect-sdk/zephyr/include/memfault/nrfconnect_port/http.h)
for more details
### Changes between Memfault SDK 0.10.0 and SDK 0.9.2 - Jan 5, 2021
#### π Improvements
- Updated
[`memfault_freertos_ram_regions.c`](ports/freertos/src/memfault_freertos_ram_regions.c)
port to collect all TCBs and then stacks. This way, the state of all tasks can
be recovered even if the coredump storage regin is filled while writing all
the task stacks.
- Reference platform API implementations for the following MCUs/SDKs:
- STM32F4 family / STM32CubeF4
- [internal flash coredump storage](ports/stm32cube/f4/flash_coredump_storage.c)
- STM32L4 family / STM32CubeL4
- [internal flash coredump storage](ports/stm32cube/l4/flash_coredump_storage.c)
- NXP's S32K1xx family / S32K1 SDL
- [internal flash coredump storage using FTFC peripheral](ports/s32sdk/ftfc_flash_coredump_storage.c)
- [software watchdog implementation using LPIT peripheral](ports/s32sdk/lpit_software_watchdog.c)
- [rich reboot reason info derived from RCM SRS register](ports/s32sdk/rcm_reboot_tracking.c)
- Silicon Lab's EFM/EFR family / v3.0 Gecko SDK
- [internal flash coredump storage using MSC peripheral h](ports/emlib/msc_coredump_storage.c)
- [software watchdog implementation using warning interrupt in WDOG peripheral](ports/emlib/wdog_software_watchdog.c)
- [reboot reason info derived from RMU RSTCAUSE register](ports/emlib/rmu_reboot_tracking.c)
#### π New Features
- Added several more
[reboot reason options](components/include/memfault/core/reboot_reason_types.h#L16):
- `kMfltRebootReason_PinReset` for explicitly tracking external pin resets.
- `kMfltRebootReason_SoftwareWatchdog` & `kMfltRebootReason_HardwareWatchdog`
for easier disambiguation between watchdog resets where a coredump was
captured versus ones where no software handler ran and hardware reset the
device.
- `kMfltRebootReason_ClockFailure` for explicit tracking of resets due to loss
of a clock signal or PLL lock.
- `kMfltRebootReason_Lockup` for explicit tracking of faults from within the
Hardfault or NMI exceptions on ARM Cortex-M MCUs.
- Added a utility which can be used to verify a platform coredump storage
implementation is working as corrected. For more details about how to use, see
[memfault_coredump_storage_debug.c](components/panics/src/memfault_coredump_storage_debug.c#L1).
#### π Internal
- Added infrastructure to coredump collection in `panics` component to support
ESP8266 (Tensilica Xtensa LX106) MCU architecture.
### Changes between Memfault SDK 0.9.3 and SDK 0.9.2 - Dec 14, 2020
#### π Improvements
- nRF Connect Updates:
- Updated port to support
[nRF Connect SDK v1.4.0](https://github.com/nrfconnect/sdk-nrf/tree/v1.4-branch)
- Added port of HTTP client to post data to Memfault
- Added support for capturing state of all Zephyr tasks during a crash. This
way the state of all threads can be seen in the Memfault UI when a crash is
uploaded.
- Updated
[memfault_demo_app](examples/nrf-connect-sdk/nrf9160/memfault_demo_app) to
use the nRF9160-DK
- Added notes to the
[step-by-step integration guide](https://mflt.io/nrf-connect-sdk-integration-guide)
for the nRF9160.
### Changes between Memfault SDK 0.9.2 and SDK 0.9.1 - Dec 10, 2020
#### π Improvements
- Added Memfault OTA support to esp-idf port. Updates can now be performed by
calling `memfault_esp_port_ota_update()`. More details can be found in
[`ports/esp_idf/memfault/include/memfault/esp_port/http_client.h`](ports/esp_idf/memfault/include/memfault/esp_port/http_client.h)
- The esp-idf port debug CLI can now easily be disabled by using the
`MEMFAULT_CLI_ENABLED=n` Kconfig option.
- Added FreeRTOS utility to facilitate collecting minimal set of RAM in a
coredump necessary to recover backtraces for all tasks. More details can be
found in
[`ports/freertos/include/memfault/ports/freertos_coredump.h`](ports/freertos/include/memfault/ports/freertos_coredump.h)
- Previously, if the Memfault event storage buffer was out of space, a "storage
out of space" error would be printed every time. Now, an error message is
printed when the issue first happened and an info message is printed when
space is free again.
- Added a reference software watchdog port for the STM32H7 series LPTIM
peripheral. Users of the STM32 HAL can now compile in the reference port and
the `MemfaultWatchdog_Handler`. The handler will save a coredump so the full
system state can be recovered when a watchdog takes place. More details can be
found in
[`ports/include/memfault/ports/watchdog.h`](ports/include/memfault/ports/watchdog.h).
### Changes between Memfault SDK 0.9.1 and SDK 0.9.0 - Nov 24, 2020
#### π Improvements
- A log can now be captured alongside a trace event by using a new API:
[`MEMFAULT_TRACE_EVENT_WITH_LOG(reason, ...)`](components/include/memfault/core/trace_event.h#L77).
This can be useful to capture arbitrary diagnostic data with an error event or
to capture critical error logs that you would like to be alerted on when they
happen. For example:
```c
// @file memfault_trace_reason_user_config.def
MEMFAULT_TRACE_REASON_DEFINE(Critical_Log)
```
```c
// @file your_platform_log_implementation.h
#include "memfault/core/trace_event.h"
#define YOUR_PLATFORM_LOG_CRITICAL(fmt, ....) \
MEMFAULT_TRACE_EVENT_WITH_LOG(Critical_Log, fmt, __VA_ARGS__)
```
```c
// @file your_platform_temperature_driver.c
void record_temperature(void) {
// ...
// erase flash to free up space
int rv = spi_flash_erase(...);
if (rv != 0) {
YOUR_PLATFORM_LOG_CRITICAL("Flash Erase Failure: rv=%d, spi_err=0x%x", spi_bus_get_status());
}
}
```
- The error tracing facilities are now initialized automatically for the esp-idf
- Fixed a π where an erroneous size was reported from
`memfault_coredump_storage_check_size()` if
`MEMFAULT_COREDUMP_COLLECT_LOG_REGIONS=1`and `memfault_log_boot()` had not yet
been called
### Changes between Memfault SDK 0.9.0 and SDK 0.8.2 - Nov 16, 2020
#### π Improvements
- ESP32 port improvements:
- The Memfault `metrics` component is now included by default in the ESP32
port
- `MEMFAULT_LOG_DEBUG` messages now print by default
- Added a `heartbeat_dump` CLI command for easy viewing of current heartbeat
metrics
- Custom handling of collecting Memfault data can now easily be implemented in
the ESP32 port using the new
[`memfault_esp_port_data_available()` & `memfault_esp_port_get_chunk()`](ports/esp_idf/memfault/include/memfault/esp_port/core.h)
APIS. This can be useful in scenarios where there are external MCUs
forwarding Memfault chunks to the ESP32.
- The platform port for the memfault log dependency can now be implemented by
macros (rather than the `memfault_platform_log` dependency). See
[`components/include/memfault/core/debug_log.h`](components/include/memfault/core/debug_log.h)
for more details.
#### π₯ Breaking Changes
- If you were using the ESP32 port:
- Call to `memfault_metrics_boot()` can now be removed
- Custom implementations for `memfault_platform_metrics_timer_boot()` &
`memfault_platform_get_time_since_boot_ms()` can be removed as they are now
provided as part of the port.
### Changes between Memfault SDK 0.8.2 and SDK 0.8.1 - Nov 13, 2020
#### π Improvements
- Coredumps will now be truncated (instead of failing to save completely) when
the memory regions requested take up more space than the platform storage
allocated for saving. A warning will also be displayed in the Memfault UI when
this happens. Regions are always read in the order returned from
[`memfault_platform_coredump_get_regions()`](components/include/memfault/panics/platform/coredump.h)
so it is recommended to order this list from the most to least important
regions to capture.
- Updated FreeRTOS port to use static allocation APIs by default when the
`configSUPPORT_STATIC_ALLOCATION=1` configuration is used.
### Changes between Memfault SDK 0.8.1 and SDK 0.8.0 - Nov 3, 2020
#### π Improvements
- Added several more
[reboot reason options](components/include/memfault/core/reboot_reason_types.h#L16):
`kMfltRebootReason_SoftwareReset` & `kMfltRebootReason_DeepSleep`.
- Extended [ESP32 port](https://mflt.io/esp-tutorial) to include integrations
for [reboot reason tracking](https://mflt.io/reboot-reasons) and
[log collection](https://mflt.io/logging).
- Apply missing check to unit test
[reported on Github](https://github.com/memfault/memfault-firmware-sdk/pull/6)
### Changes between Memfault SDK 0.8.0 and SDK 0.7.2 - Oct 26, 2020
#### π Improvements
- Added a new convenience API,
[`memfault_coredump_storage_check_size()`](components/include/memfault/panics/coredump.h),
to check that coredump storage is appropriately sized.
- Fixed a π with heartbeat timers that would lead to an incorrect duration
being reported if the timer was started and stopped within the same
millisecond.
- Fixed an issue when using TI's compiler that could lead to the incorrect
register state being captured during a fault.
#### π₯ Breaking Changes
- If you were **not** using the
[error tracing functionality](https://mflt.io/error-tracing), you will need to
create the configuration file "memfault_trace_reason_user_config.def" and add
it to your include path. This removes the requirement to manually define
`MEMFAULT_TRACE_REASON_USER_DEFS_FILE` as part of the compiler flags.
### Changes between Memfault SDK 0.7.3 and SDK 0.7.2 - Oct 5, 2020
#### π Improvements
- Add support for sending multiple events in a single chunk. This can be useful
for optimizing throughput or packing more data into a single transmission
unit. The behavior is disabled by default but can be enabled with the
`MEMFAULT_EVENT_STORAGE_READ_BATCHING_ENABLED` compiler flag. More details can
be found in
[memfault_event_storage.c](components/core/src/memfault_event_storage.c#L30)
- Added convenience API, `memfault_build_id_get_string`, for populating a buffer
with a portion of the
[Memfault Build ID](components/include/memfault/core/build_info.h#L8-L42) as a
string.
- Added default implementations of several Memfault SDK dependency functions
when using FreeRTOS to [ports/freertos](ports/freertos).
### Changes between Memfault SDK 0.7.2 and SDK 0.7.1 - Sept 1, 2020
#### π Improvements
- A status or error code (i.e bluetooth disconnect reason, errno value, etc) can
now be logged alongside a trace event by using a new API:
[`MEMFAULT_TRACE_EVENT_WITH_STATUS(reason, status_code)`](components/include/memfault/core/trace_event.h#L55).
### Changes between Memfault SDK 0.7.1 and SDK 0.7.0 - Sept 1, 2020
#### π Improvements
- Added support for TI's ARM-CGT Compiler
- Removed dependency on NMI Exception Handler for `MEMFAULT_ASSERT`s. Instead of
pending an NMI exception, the assert path will now "trap" into the fault
handler by executing a `udf` instruction. This unifies the fault handling
paths within the SDK and leaves the NMI Handler free for other uses within the
user's environment.
- Added several more
[reboot reason options](components/include/memfault/core/reboot_reason_types.h#L16):
`kMfltRebootReason_PowerOnReset`, `kMfltRebootReason_BrownOutReset`, &
`kMfltRebootReason_Nmi`.
### Changes between Memfault SDK 0.7.0 and SDK 0.6.1 - Aug 6, 2020
#### π Improvements
- Added utility to facilitate collection of the memory regions used by the
[logging module](components/include/memfault/core/log.h) as part of a
coredump. With this change, when the SDK is compiled with
`MEMFAULT_COREDUMP_COLLECT_LOG_REGIONS=1`, the logging region will
automatically be collected as part of a coredump. Step-by-step details can
also be found in the [logging integration guide](https://mflt.io/logging).
- Added `MEMFAULT_METRICS_KEY_DEFINE_WITH_RANGE()` which can be used for
defining the minimum and maximum expected range for a heartbeat metric. This
information is used by the Memfault cloud to better normalize the data when it
is presented in the UI.
#### π₯ Breaking Changes
- If you are _not_ using our CMake or Make
[build system helpers](README.md#add-sources-to-build-system) and are using
the `panics` component, you will need to manually add the following file to
your build system:
`$(MEMFAULT_SDK_ROOT)/components/panics/src/memfault_coredump_sdk_regions.c`
### Changes between Memfault SDK 0.6.1 and SDK 0.6.0 - July 27, 2020
#### π Improvements
- Added a port for projects using the [nRF Connect SDK](ports/nrf-connect-sdk)
along with a
[step-by-step integration guide](https://mflt.io/nrf-connect-sdk-integration-guide).
- Disabled optimizations for `memfault_data_export_chunk()` to guarantee the
[GDB chunk test utility](https://mflt.io/send-chunks-via-gdb) can always be
used to post chunks using the data export API.
### Changes between Memfault SDK 0.6.0 and SDK 0.5.1 - July 21, 2020
#### π New Features
- Added
[memfault/core/data_export.h](components/include/memfault/core/data_export.h#L5)
API to facilitate production and evaluation use cases where Memfault data is
extracted over a log interface (i.e shell, uart console, log file, etc). See
the header linked above or the
[integration guide](https://mflt.io/chunk-data-export) for more details.
#### π Improvements
- Fixed a π that would cause the demo shell to get stuck if backspace
characters were entered while no other characters had been entered.
- Updated the [GDB chunk test utility](https://mflt.io/send-chunks-via-gdb) to
automatically detect when the data export API is integrated and post-chunks to
the cloud directly from GDB when the function is invoked.
#### π₯ Breaking Changes
- If you are _not_ using our CMake or Make
[build system helpers](README.md#add-sources-to-build-system) and want to make
use of the new data export API, you will need to manually add the following
files to your build system:
- Add: `$(MEMFAULT_SDK_ROOT)/components/core/src/memfault_data_export.c`
- Add: `$(MEMFAULT_SDK_ROOT)/components/util/src/memfault_base64.c`
### Changes between Memfault SDK 0.5.1 and SDK 0.5.0 - June 24, 2020
#### π Improvements
- Updated code to support compilations with `-Wunused-parameter`, GNU GCC's
`-Wformat-signedness`, and Clang's `-Wno-missing-prototypes` &
`-Wno-missing-variable-declarations`.
- Updated unit test setup to compile with newly supported warnings treated as
errors
#### π Internal
- Misc utility additions including support for encoding floats and int64_t's in
the cbor utility
### Changes between Memfault SDK 0.5.0 and SDK 0.4.2 - June 11, 2020
#### π New Features
- Add additional utilities to the http component to facilitate easier
[release management](https://mflt.io/release-mgmt) integration in environments
with no pre-existing http stack.
- Add new cli command, `mflt get_latest_release`, to the Zephyr demo application
(tested on the STM32L4) to demonstrate querying the Memfault cloud for new
firmware updates.
#### π Improvements
- Refactored `demo` component to make it easier to integrate an individual CLI
commands into a project since some of the commands can be helpful for
validating integrations. More details can be found in the README at
[components/demo/README.md](components/demo/README.md).
#### π₯ Breaking Changes
- If you are using the "demo" component _and_ are _not_ making use our CMake or
Make [build system helpers](README.md#add-sources-to-build-system), you will
need to make the following changes:
- Update:
`$(MEMFAULT_SDK_ROOT)/components/demo/src/{memfault_demo_cli.c => panics/memfault_demo_panics.c}`
- Update:
`$(MEMFAULT_SDK_ROOT)/components/demo/src/{ => panics}/memfault_demo_cli_aux.c`
- Add: `$(MEMFAULT_SDK_ROOT)/components/demo/src/memfault_demo_core.c`
- Add: `$(MEMFAULT_SDK_ROOT)/components/demo/src/http/memfault_demo_http.c`
- If you are using the `http` component, the following macro names changed:
```diff
-#define MEMFAULT_HTTP_GET_API_PORT()
-#define MEMFAULT_HTTP_GET_API_HOST()
+#define MEMFAULT_HTTP_GET_CHUNKS_API_PORT()
+#define MEMFAULT_HTTP_GET_CHUNKS_API_HOST()
```
### Changes between Memfault SDK 0.4.2 and SDK 0.4.1 - June 8, 2020
#### π Improvements
- Moved `reboot_tracking.h` to `core` component since it has no dependencies on
anything from the `panics` component. This allows the reboot tracking to be
more easily integrated in a standalone fashion.
- [Published a new guide](https://mflt.io/release-mgmt) detailing how to manage
firmware updates using Memfault.
- Disabled optimizations for `memfault_fault_handling_assert()`. This improves
the recovery of local variables of frames in the backtrace when certain
optimization levels are used.
- Updated `memfault_sdk_assert.c` to address a GCC warning
(`-Wpointer-to-int-cast`) emitted when compiling the file for 64 bit
architectures.
- Misc README improvements.
#### π₯ Breaking Changes
- If you are already using reboot tracking in your system, you will need to
update the following includes in your code:
```diff
-#include "memfault/panics/reboot_tracking.h"
-#include "memfault/panics/reboot_reason_types.h"
+#include "memfault/core/reboot_tracking.h"
+#include "memfault/panics/reboot_reason_types.h"
```
- If you are _not_ using our CMake or Make
[build system helpers](README.md#add-sources-to-build-system), you will need
to update the path for the following files:
- `$(MEMFAULT_SDK_ROOT)/components/{panics => core}/src/memfault_ram_reboot_info_tracking.c`
- `$(MEMFAULT_SDK_ROOT)/components/{panics => core}/src/memfault_reboot_tracking_serializer.c`
- `eMfltResetReason` was renamed to `eMemfaultRebootReason`.
### Changes between Memfault SDK 0.4.1 and SDK 0.4.0 - May 20, 2020
#### π New Features
- Added native SDK support for tracking and generating a unique firmware build
id with any compiler! Quick integration steps can be found in
[memfault/core/build_info.h](components/include/memfault/core/build_info.h#L8-L42).
It is very common, especially during development, to not change the firmware
version between editing and compiling the code. This will lead to issues when
recovering backtraces or symbol information because the debug information in
the symbol file may be out of sync with the actual binary. Tracking a build id
enables the Memfault cloud to identify and surface when this happens! You can
also make use of two new APIs:
- `memfault_build_info_dump()` can be called on boot to display the build that
is running. This can be a useful way to sanity check that your debugger
successfully flashed a new image.
- `memfault_build_info_read()` can be used to read the build id for your own
use cases. For example you could append a portion of it to a debug version
to make it unique.
#### π Improvements
- The CMake [build system helper](README.md#add-sources-to-build-system) is now
compatible with any 3.x version of CMake (previously required 3.6 or newer).
- The unique firmware build id is stored automatically as part of coredump
collection.
#### π₯ Breaking Changes
- If you are _not_ using our CMake or Make
[build system helpers](README.md#add-sources-to-build-system), you will need
to add the following files to your build:
- `$(MEMFAULT_SDK_ROOT)/components/core/src/memfault_build_id.c`
- `$(MEMFAULT_SDK_ROOT)/components/core/src/memfault_core_utils.c`
- We also encourage you to add a
[unique build id](components/include/memfault/core/build_info.h#L8-L42) to
your build (several line code change).
### Changes between Memfault SDK 0.4.0 and SDK 0.3.4 - May 6, 2020
#### π New Features
- Added support for (optionally) storing events collected by the SDK to
non-volatile storage mediums. This can be useful for devices which experience
prolonged periods of no connectivity. To leverage the feature, an end user
must implement the
[nonvolatile_event_storage platform API](components/include/memfault/core/platform/nonvolatile_event_storage.h#L7).
#### π Improvements
- Added an assert used internally by the SDK which makes it easier to debug API
misuse during bringup. The assert is enabled by default but can easily be
disabled or overridden. For more details see
[`memfault/core/sdk_assert.h`](components/include/memfault/core/sdk_assert.h#L6).
- Added a default implementation of
[`memfault_platform_halt_if_debugging()`](components/core/src/arch_arm_cortex_m.c#L20-L34)
for Cortex-M targets. The function is defined as _weak_ so a user can still
define the function to override the default behavior.
#### π Internal
- Updated
[`memfault install_chunk_handler`](https://mflt.io/posting-chunks-with-gdb) to
work with older versions of the GNU Arm Toolchain.
#### π₯ Breaking Changes
- If you are _not_ using our CMake or Make
[build system helpers](README.md#add-sources-to-build-system), you will need
to add `$(MEMFAULT_SDK_ROOT)/components/core/src/memfault_sdk_assert.c` to
your project.
### Changes between Memfault SDK 0.3.4 and SDK 0.3.3 - April 22, 2020
#### π Improvements
- Moved `trace_event.h` to `core` component since it has no dependencies on
anything from the `panics` component. This allows the trace event feature to
be more easily integrated in a standalone fashion.
#### π₯ Breaking Changes
- If you are already using `MEMFAULT_TRACE_EVENT()` in your project, you will
need to update the include as follows:
```diff
-#include "memfault/panics/trace_event.h"
+#include "memfault/core/trace_event.h"
```
- If you are _not_ using our CMake or Make
[build system helpers](README.md#add-sources-to-build-system), you will need
to update the source path for `components/panics/src/memfault_trace_event.c`
to `components/core/src/memfault_trace_event.c`
### Changes between Memfault SDK 0.3.3 and SDK 0.3.2 - April 21, 2020
#### π New Features
- Added a new [GDB command](https://mflt.io/posting-chunks-with-gdb) which can
be used to post packetized Memfault data directly from GDB to the Memfault
cloud. This can be helpful as a way to quickly test data collection
functionality while working on an integration of the SDK.
### Changes between Memfault SDK 0.3.2 and SDK 0.3.1 - April 16, 2020
#### π New Features
- The `captured_date` for an event can now be set by implementing
[`memfault_platform_time_get_current()`](components/include/memfault/core/platform/system_time.h#L33).
If the API is not implemented, the `captured_date` will continue to be set
based on the time the event was received by the memfault cloud.
#### π Improvements
- Added a reference implementation of
[reboot reason tracking](https://mflt.io/2QlOlgH) to the
[NRF52 demo app](examples/nrf5/libraries/memfault/platform_reference_impl/memfault_platform_reboot_tracking.c#L1)
and a new `reboot` CLI command to easily exercise it.
- A `reset_reason` can now optionally be provided as part of
[`sResetBootupInfo`](components/include/memfault/core/reboot_tracking.h#L41).
This can be useful for scenarios where the reboot reason is known on bootup
but could not be set prior to the device crashing.
- A reboot reason event will now _always_ be generated when
`memfault_reboot_tracking_boot()` is called even if no information about the
reboot has been provided. In this scenario, the reset reason will be
[`kMfltRebootReason_Unknown`](components/include/memfault/core/reboot_reason_types.h#L16)
#### π Internal
- Updated a few Kconfig options in the Zephyr demo app to improve the ability to
compute stack high water marks (`CONFIG_INIT_STACKS=y`) and determine if
stacks has overflowed (`CONFIG_MPU_STACK_GUARD=y`).
#### π₯ Breaking Changes
- `device_serial` is no longer encoded by default as part of events. Instead,
the `device_serial` in an event is populated from the the unique device
identifier used when posting the data to the
[chunks REST endpoint](https://mflt.io/chunks-api). This leads to ~20%
reduction in the size of a typical event. Encoding `device_serial` as part of
the event itself can still be enabled by adding
[`-DMEMFAULT_EVENT_INCLUDE_DEVICE_SERIAL=1`](components/core/src/memfault_serializer_helper.c#L23)
as a compilation flag but should not be necessary for a typical integration.
### Changes between Memfault SDK 0.3.1 and SDK 0.3.0 - April 9, 2020
#### π New Features
- Added [`memfault_log_read()`](components/include/memfault/core/log.h#L95-L121)
API to make it possible to use the module to cache logs in RAM and then flush
them out to slower mediums, such as a UART console or Flash, from a background
task.
#### π Improvements
- A pointer to the stack frame upon exception entry is now included in
`sCoredumpCrashInfo` when
[memfault_platform_coredump_get_regions](components/include/memfault/panics/platform/coredump.h#L56)
is invoked. This can (optionally) be used to configure regions collected based
on the state or run platform specific cleanup based on the state.
- Added Root Certificates needed for release downloads to
[`MEMFAULT_ROOT_CERTS_PEM`](components/http/include/memfault/http/root_certs.h#L146).
#### π Internal
- All sources that generate events now use the same utility function,
`memfault_serializer_helper_encode_metadata()` to encode common event data.
### Changes between Memfault SDK 0.3.0 and SDK 0.2.5 - April 3, 2020
#### π New Features
- Introduced a lightweight logging module. When used, the logs leading up to a
crash will now be decoded and displayed from the Memfault Issue Details Web
UI. For instructions about how to use the module in your project, check out
[log.h](components/include/memfault/core/log.h).
- The metrics component will now automatically collect the elapsed time and the
number of unexpected reboots during a heartbeat interval. The Memfault cloud
now uses this information to automatically compute and display the overall
uptime of your fleet.
#### π Improvements
- Added a [new document](https://mflt.io/fw-event-serialization) walking through
the design of Memfault event serialization.
- Cleaned up `test_memfault_root_cert.cpp` and moved the `base64` implementation
within the unit test to the `util` component so it is easier to share the code
elsewhere in the future.
- Added `const` to a few circular_buffer.h API signatures.
- Misc code comment improvements.
#### π₯ Breaking Changes
- The function signature for `memfault_metrics_boot()` changed as part of this
update. If you are already using the `metrics` component, you will need to
update the call accordingly. See the notes in
[metrics.h](components/include/memfault/metrics/metrics.h) for more details.
- If you are _not_ using our CMake or Make
[build system helpers](README.md#add-sources-to-build-system), you will need
to add `$(MEMFAULT_SDK_ROOT)/components/core/src/memfault_log.c` to your
project. (Note that until
[`memfault_log_boot()`](https://github.com/memfault/memfault-firmware-sdk/blob/master/components/include/memfault/core/log.h#L33-L38)
is called, all calls made to the logging module will be a no-op).
### Changes between Memfault SDK 0.2.5 and SDK 0.2.4 - March 20, 2020
- Improve the `memfault_platform_coredump_storage_clear()` NRF52 reference
implementation for situations where the SoftDevice is enabled and there is a
lot of Bluetooth activity. (In this scenario, NRF52 flash operations may need
retries or take a while to complete).
- Fixed compiler error that could arise with the metrics component when using
Arm Compiler 5 due to multiply defined weak symbols.
### Changes between Memfault SDK 0.2.4 and SDK 0.2.3 - March 10, 2020
- Add support for ESP32 (Tensilica Xtensa LX6 MCU) to the **panics** component.
- A step-by-step integration guide can be found
[here](https://mflt.io/esp-tutorial).
- A drop-in port for an existing v3.x or v4.x based ESP-IDF project can be
found at [ports/esp_idf](ports/esp_idf).
- An example application exercising the memfault-firmware-sdk can be found
[here](examples/esp32/README.md).
### Changes between Memfault SDK 0.2.3 and SDK 0.2.2 - March 3, 2020
- If a [software watchdog](https://mflt.io/root-cause-watchdogs) has been
implemented on a Cortex-M device, `MemfaultWatchdog_Handler` can now be
registered as the Exception Handler to automatically collect a coredump.
- For heartbeat metrics, instead of serializing the name of each metric, we now
recover it from the debug information in the symbol file in the Memfault
cloud. For a typical heartbeat this reduces the serialization size by more
than 50% and results in a smaller footprint than other structured
serialization alternatives such as Protobuf.
- Remove usage of `__has_include` macro for IAR compiler since not all versions
fully support it.
### Changes between Memfault SDK 0.2.1 and SDK 0.2.2 - Feb 20, 2020
- Add support for calling `MEMFAULT_TRACE_EVENT()` from interrupts. Note: If you
are _not_ using our CMake or Make
[build system helpers](README.md#add-sources-to-build-system), this change
requires that you add
`$(MEMFAULT_SDK_ROOT)/components/core/src/arch_arm_cortex_m.c` to your
project.
- Misc documentation improvements.
### Changes between Memfault SDK 0.2.0 and SDK 0.2.1 - Feb 14, 2020
- Add support for compressing coredumps as they are sent using Run Length
Encoding (RLE). More details can be found in
[memfault/core/data_source_rle.h](components/include/memfault/core/data_source_rle.h).
- Update **metrics** component to support compilation with the IAR ARM C/C++
Compiler.
- Update Mbed OS 5 port to use `memfault_demo_shell` instead `mbed-client-cli`,
since `mbed-client-cli` is not part of the main Mbed OS 5 distribution.
- Update nrf52 example application to only collect the active parts of the stack
to reduce the overall size of the example coredump.
### Changes between Memfault SDK 0.2.0 and SDK 0.1.0 - Feb 5, 2020
- Add a new API ("Trace Event") for tracking errors. This allows for tracing
issues that are unexpected but are non-fatal (don't result in a device
reboot). A step-by-step guide detailing how to use the feature can be found
at: <https://mflt.io/error-tracing>
- Update GDB coredump collection script to work with the ESP32 (Tensilica Xtensa
LX6 Architecture)
- Remove `__task` from IAR Cortex-M function handler declarations since it's not
explicitly required and can lead to a compiler issue if the function prototype
does not also use it.
- Misc documentation and comment tweaks to make nomenclature more consistent
### Changes between Memfault SDK 0.1.0 and SDK 0.0.18 - Jan 22, 2020
- Update **panics** component to support compilation with IAR ARM C/C++
Compiler. More details about integrating IAR can be found at
<https://mflt.io/iar-tutorial>. As part of the change `MEMFAULT_GET_LR()` now
takes an argument which is the location to store the LR to
(`void *lr = MEMFAULT_GET_LR()` -> `void *lr;` `MEMFAULT_GET_LR(lr)`)
### Changes between Memfault SDK 0.0.18 and SDK 0.0.17 - Jan 14, 2020
- Update the chunk protocol to encode CRC in last chunk of message instead of
first. This allows the CRC to be computed incrementally and the underlying
message to be read once (instead of twice). It also makes it easier to use the
data packetizer in environments where reads from data sources need to be
performed asynchronously. More details can be found at
<https://mflt.io/data-to-cloud>
- Fixed a couple documentation links
### Changes between Memfault SDK 0.0.17 and SDK 0.0.16 - Jan 7, 2020
- Guarantee that all accesses to the platform coredump storage region route
through `memfault_coredump_read` while the system is running.
- Scrub unused portion of out buffer provided to packetizer with a known pattern
for easier debugging
### Changes between Memfault SDK 0.0.16 and SDK 0.0.15 - Jan 6, 2020
- Add convenience API, `memfault_packetizer_get_chunk()`, to
[data_packetizer](components/include/memfault/core/data_packetizer.h) module.
- Add a new eMfltCoredumpRegionType, `MemoryWordAccessOnly` which can be used to
force the region to be read 32 bits at a time. This can be useful for
accessing certain peripheral register ranges which are not byte addressable.
- Automatically collect Exception / ISR state for Cortex-M based targets. NOTE
that the default config requires an additional ~150 bytes of coredump storage.
The feature can be disabled completely by adding
`-DMEMFAULT_COLLECT_INTERRUPT_STATE=0` to your compiler flags. More
configuration options can be found in
[memfault_coredump_regions_armv7.c](components/panics/src/memfault_coredump_regions_armv7.c).
- Improve documentation about integrating the SDK within a project in README
- Update Release note summary to use markdown headings for easier referencing.
- Update try script used to collect coredumps via GDB to also collect
Exception/ISR register information.
### Changes between Memfault SDK 0.0.15 and SDK 0.0.14 - Dec 19, 2019
- Add ARMv6-M fault handling port to **panics** component for MCUs such as the
ARM Cortex-M0 and Cortex-M0+.
### Changes between Memfault SDK 0.0.14 and SDK 0.0.13 - Dec 18, 2019
- Update **panics** component to support compilation with Arm Compiler 5.
### Changes between Memfault SDK 0.0.13 and SDK 0.0.12 - Dec 16, 2019
- Updated Cortex-M fault handler in **panics** component to also collect `psp`
and `msp` registers when the system crashes. This allows for the running
thread backtrace to be more reliably recovered when a crash occurs from an
ISR.
- Added optional `MEMFAULT_EXC_HANDLER_...` preprocessor defines to enable
custom naming of exception handlers in the **panics** component.
- Add port for Cortex-M based targets using Quantum Leaps' QPβ’/C & QPβ’/C++
real-time embedded framework. See [ports/qp/README.md](ports/qp/README.md) for
more details.
- Add demo application running Quantum Leaps' QPβ’/C running on the
[STM32F407 discovery board](https://www.st.com/en/evaluation-tools/stm32f4discovery.html).
See [examples/qp/README.md](examples/qp/README.md) for more details.
- Added demo application and port for Arm Mbed OS 5 running on the
[STM32F429I-DISC1 evaluation board](https://www.st.com/en/evaluation-tools/32f429idiscovery.html).
See [examples/mbed/README.md](examples/mbed/README.md) for more details.
- Changed `print_core` to `print_chunk` in demo applications to better align
with the Memfault nomenclature for
[data transfer](https://mflt.io/data-to-cloud).
### Changes between Memfault SDK 0.0.12 and SDK 0.0.11 - Dec 4, 2019
- Expose root certificates used by Memfault CI in DER format for easier
integration with TLS libraries which do not parse PEM formatted certificates.
- Add utilities to the http component for constructing Memfault cloud **chunk**
endpoint POST requests to facilitate easier integration in environments with
no pre-existing http stack.
- Add port for Cortex-M based targets in the Zephyr RTOS. Ports are available
for the 1.14 Long Term Support Release as well as the 2.0 Release. See
[ports/zephyr/README.md](ports/zephyr/README.md) for more details
- Add Zephyr demo application (tested on the STM32L4). See
[zephyr demo app directory](examples/zephyr/README.md) for more details
### Changes between Memfault SDK 0.0.11 and SDK 0.0.10 - Nov 25, 2019
- Release of **metrics** component. This API can easily be used to monitor
device health over time (i.e connectivity, battery life, MCU resource
utilization, hardware degradation, etc) and configure Alerts with the Memfault
backend when things go astray. To get started, see this
[document](https://mflt.io/2D8TRLX)
### Changes between Memfault SDK 0.0.10 and SDK 0.0.9 - Nov 22, 2019
- Updated `memfault_platform_coredump_get_regions()` to take an additional
argument, `crash_info` which conveys information about the crash taking place
(trace reason & stack pointer at time of crash). This allows platform ports to
dynamically change the regions collected based on the crash if so desired.
This will require an update that looks like the following to your port:
```diff
-const sMfltCoredumpRegion *memfault_platform_coredump_get_regions(size_t *num_regions) {
+const sMfltCoredumpRegion *memfault_platform_coredump_get_regions(
+ const sCoredumpCrashInfo *crash_info, size_t *num_regions) {
```
- Added a new API, `memfault_coredump_storage_compute_size_required()` which can
be called on boot to sanity check that platform coredump storage is large
enough to hold a coredump. For example:
```c
sMfltCoredumpStorageInfo storage_info = { 0 };
memfault_platform_coredump_storage_get_info(&storage_info);
const size_t size_needed = memfault_coredump_storage_compute_size_required();
if (size_needed > storage_info.size) {
MEMFAULT_LOG_ERROR("Coredump storage too small. Got %d B, need %d B",
storage_info.size, size_needed);
}
MEMFAULT_ASSERT(size_needed <= storage_info.size);
```
- Added a convenience RAM backed
[reference port](https://github.com/memfault/memfault-firmware-sdk/blob/master/ports/panics/src/memfault_platform_ram_backed_coredump.c)
for coredump platform APIs. This can be used for persisting a coredump in RAM
across a reset.
### Changes between Memfault Firmware SDK 0.0.9 and 0.0.8 - Nov 15, 2019
- Enhanced Reboot Tracking module within the **panics** component. Reboots that
don't result in coredumps can now be easily tracked (i.e brown outs, system
watchdogs, user initiated resets, resets due to firmware updates, etc). See
`memfault/core/reboot_tracking.h` for more details and
<https://mflt.io/2QlOlgH> for a step-by-step setup tutorial.
- Added Event Storage module within the **core** component. This is a small RAM
backed data store that queues up traces to be published to the Memfault cloud.
To minimize the space needed and transport overhead, all events collected
within the SDK are stored using the Concise Binary Object Representation
(CBOR)
### Changes between Memfault Firmware SDK 0.0.8 and 0.0.7 - Nov 7, 2019
- Added helper makefile (`makefiles/MemfaultWorker.mk`). A user of the SDK can
include this makefile when using a make as their build system to easily
collect the sources and include paths needed to build Memfault SDK components
- Make unit tests public & add CI to external SDK
### Changes between Memfault Firmware SDK 0.0.7 and 0.0.6 - Oct 31, 2019
- Added firmware side support for the Memfault cloud **chunk** endpoint. This is
a sessionless endpoint that allows chunks of arbitrary size to be sent and
reassembled in the Memfault cloud. This transport can be used to publish _any_
data collected by the Memfault SDK. The data is read out on the SDK side by
calling the `memfault_packetizer_get_next()` API in `data_packetizer.h`. More
details [here](https://mflt.io/data-to-cloud)
- Updated demo apps to use the new **chunk** endpoint
- Added a new _weak_ function, `memfault_coredump_read()` so platform ports can
easily add locking on reads to coredump storage if necessary for transmission.
- Updates to this version of the sdk will require the **util** component get
compiled when using the **panics** API
### Changes between Memfault Firmware SDK 0.0.6 and 0.0.5 - Oct 14, 2019
- Added example port and demo for the STM32H743I-NUCLEO144 evaluation board
running ChibiOS. See `examples/stm32/stm32h743i/README.md` for more details.
- general README documentation improvements
- Fixed compilation error that could arise in `memfault_fault_handling_arm.c`
when using old versions of GCC
### Changes between Memfault Firmware SDK 0.0.5 and 0.0.4 - September 23, 2019
- Updated **panics** SDK to support complex hardware toplogies such as systems
with multiple MCUs or systems running multiple binaries on a single MCU. More
details [here](https://mflt.io/34PyNGQ). Users of the SDK will need to update
the implementation for `memfault_platform_get_device_info()`
- Updated all ports to be in sync with SDK updates
### Changes between Memfault Firmware SDK 0.0.4 and 0.0.3 - August 19, 2019
- Updated **panics** core code to _always_ collect fault registers for ARMv6-M &
ARMv7-M architectures. The Memfault cloud will auto-analyze these and present
an analysis.
- Updated <https://try.memfault.com> gdb script to collect Cortex-M MPU region
information for auto-analysis
- general README documentation improvements
- improved error reporting strategy and documentation in
`memfault/core/errors.h`
### Changes between Memfault Firmware SDK 0.0.3 and 0.0.2 - July 2, 2019
- added example port and demo of **panics** SDK for the Nordic nRF52840
(PCA10056) development kit. See `examples/nrf5/README.md` for more details.
- Made SDK headers suitable for includion in C++ files
First Public Release of Memfault Firmware SDK 0.0.2 - June 26, 2019
- published initial Memfault SDK, see `README.md` in root for summary
- published **panics** API which is a C SDK that can be integrated into any
Cortex-M device to save a "core" (crash state) on faults and system asserts.
See`components/panics/README.md` for more details
- Added example port and demo of **panics** SDK for the BCM943364WCD1 evaluation
board running the WICED Wifi stack. More details in `examples/wiced/README.md`
- add python invoke based CLI wrapper for demo ports
Supports all targets
License: Custom
To add this component to your project, run:
or
download archive
idf.py add-dependency "memfault/memfault-firmware-sdk^1.15.0"
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