Serial flasher component provides portable library for flashing Espressif SoCs (
ESP8266) from other host microcontroller. Espressif SoCs are normally programmed via serial interface (UART). Port layer for given host microcontroller has to be implemented, if not available. Details can be found in section below.
In order to support new target, following function has to be implemented by user:
Following functions are part of serial_io.h header for convenience, however, user does not have to strictly follow function signatures, as there are not called directly from library.
Apart from writing port (if not available), user can enable flash integrity check functionality by setting MD5_ENABLED option. If enabled, serial flasher is capable of verify flash integrity after writing to memory.
Configuration can be passed to
cmake via command line:
cmake -DMD5_ENABLED=1 .. && cmake --build .
Note: in case, no compile definitions are provided, ESP32 is set as target and MD5 check is enabled by default. As ROM bootloader of ESP8266 does not support MD5_CHECK,
-DMD5_ENABLED=0 has to be passed to command line.
STM32 port make use of STM32 HAL libraries, that does not come with CMake support. In order to compile the project,
cmake support package) has to be pulled as submodule.
git clone --recursive https://github.com/espressif/esp-serial-flasher.git
If you have cloned this repository without the
--recursive flag, you can initialize the submodule using the following command:
git submodule update --init
In addition to configuration parameters mentioned above, following definitions has to be set: * TOOLCHAINPREFIX: path to arm toolchain (i.e /home/user/gcc-arm-none-eabi-9-2019-q4-major) * STM32CubeDIR: path to STM32 Cube libraries (i.e /home/user/STM32Cube/Repository/STM32CubeFWF4V1.25.0) * STM32CHIP: name of STM32 for which project should be compiled (i.e STM32F407VG) * PORT: STM32
This can be achieved by passing definition to command line, such as:
cmake -DTOOLCHAIN_PREFIX="/path_to_toolchain" -DSTM32Cube_DIR="path_to_stm32Cube" -DSTM32_CHIP="STM32F407VG" -DPORT="STM32" .. && cmake --build .
Alternatively, set those variables in top level
set(TOOLCHAIN_PREFIX path_to_toolchain) set(STM32Cube_DIR path_to_stm32_HAL) set(STM32_CHIP STM32F407VG) set(PORT STM32)
Code is distributed under Apache 2.0 license.
Size of new binary image has to be known before flashing.