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ESP32 espressif IoT development framework (esp-idf) compatible component for Bosch BMP390 temperature and pressure I2C sensors.
readme
# Bosch BMP390 Sensor
[](https://github.com/K0I05)
[](/LICENSE)
[](https://en.wikipedia.org/wiki/C_(programming_language))
[](https://docs.espressif.com/projects/esp-idf/en/stable/esp32/index.html)
[](https://code.visualstudio.com/)
[](https://platformio.org/)
[](https://registry.platformio.org/libraries/k0i05/esp_bmp390)
[](https://components.espressif.com/components/k0i05/esp_bmp390)
This ESP32 espressif IoT development framework (esp-idf) i2c peripheral driver was developed for the Bosch BMP390 pressure and temperature sensor. Information on features and functionality are documented and can be found in the `bmp290.h` header file and in the `documentation` folder.
## Repository
The component is hosted on github and is located here: <https://github.com/K0I05/ESP32-S3_ESP-IDF_COMPONENTS/tree/main/components/peripherals/i2c/esp_bmp390>
## General Usage
To get started, simply copy the component to your project's `components` folder and reference the `bmp390.h` header file as an include. The component includes documentation for the peripheral such as the datasheet, application notes, and/or user manual where applicable.
```text
components
└── esp_bmp390
├── CMakeLists.txt
├── README.md
├── LICENSE
├── idf_component.yml
├── library.json
├── documentation
│ └── datasheets, etc.
├── include
│ └── bmp390_version.h
│ └── bmp390.h
└── bmp390.c
```
## Basic Example
Once a driver instance is instantiated the sensor is ready for usage as shown in the below example. This basic implementation of the driver utilizes default configuration settings and makes a measurement request from the sensor at user defined interval and prints the results.
```c
#include <bmp390.h>
void i2c0_bmp390_task( void *pvParameters ) {
// initialize the xLastWakeTime variable with the current time.
TickType_t last_wake_time = xTaskGetTickCount ();
//
// initialize i2c device configuration
bmp390_config_t dev_cfg = I2C_BMP390_CONFIG_DEFAULT;
bmp390_handle_t dev_hdl;
//
// init device
bmp390_init(i2c0_bus_hdl, &dev_cfg, &dev_hdl);
if (dev_hdl == NULL) {
ESP_LOGE(APP_TAG, "bmp390 handle init failed");
assert(dev_hdl);
}
/* configuration registers */
bmp390_power_control_register_t power_ctrl_reg;
bmp390_configuration_register_t config_reg;
bmp390_oversampling_register_t oversampling_reg;
bmp390_output_data_rate_register_t output_data_rate_reg;
bmp390_interrupt_control_register_t interrupt_ctrl_reg;
/* attempt to read configuration register */
bmp390_get_configuration_register(dev_hdl, &config_reg);
/* attempt to read oversampling register */
bmp390_get_oversampling_register(dev_hdl, &oversampling_reg);
/* attempt to read to power control register */
bmp390_get_power_control_register(dev_hdl, &power_ctrl_reg);
/* attempt to read to output data rate register */
bmp390_get_output_data_rate_register(dev_hdl, &output_data_rate_reg);
/* attempt to read to interrupt control register */
bmp390_get_interrupt_control_register(dev_hdl, &interrupt_ctrl_reg);
ESP_LOGI(APP_TAG, "Configuration (0x%02x): %s", config_reg.reg, uint8_to_binary(config_reg.reg));
ESP_LOGI(APP_TAG, "Oversampling (0x%02x): %s", oversampling_reg.reg, uint8_to_binary(oversampling_reg.reg));
ESP_LOGI(APP_TAG, "Data Rate (0x%02x): %s", output_data_rate_reg.reg, uint8_to_binary(output_data_rate_reg.reg));
ESP_LOGI(APP_TAG, "Power Control (0x%02x): %s", power_ctrl_reg.reg, uint8_to_binary(power_ctrl_reg.reg));
ESP_LOGI(APP_TAG, "Int Control (0x%02x): %s", interrupt_ctrl_reg.reg, uint8_to_binary(interrupt_ctrl_reg.reg));
if(interrupt_ctrl_reg.bits.irq_data_ready_enabled) ESP_LOGE(APP_TAG, "bmp390 irq data ready is enabled");
// task loop entry point
for ( ;; ) {
ESP_LOGI(APP_TAG, "######################## BMP390 - START #########################");
//
// handle sensor
float temperature, pressure;
esp_err_t result = bmp390_get_measurements(dev_hdl, &temperature, &pressure);
if(result != ESP_OK) {
ESP_LOGE(APP_TAG, "bmp390 device read failed (%s)", esp_err_to_name(result));
} else {
pressure = pressure / 100;
ESP_LOGI(APP_TAG, "air temperature: %.2f °C", temperature);
ESP_LOGI(APP_TAG, "barometric pressure: %.2f hPa", pressure);
}
//
ESP_LOGI(APP_TAG, "######################## BMP390 - END ###########################");
//
//
// pause the task per defined wait period
vTaskDelaySecUntil( &last_wake_time, I2C0_TASK_SAMPLING_RATE );
}
//
// free resources
bmp390_delete( dev_hdl );
vTaskDelete( NULL );
}
```
Copyright (c) 2024 Eric Gionet (<gionet.c.eric@gmail.com>)
Links
Supports all targets
Maintainer
- Eric Gionet <gionet.c.eric@gmail.com>
License: MIT
To add this component to your project, run:
download archive
idf.py add-dependency "k0i05/esp_bmp390^1.2.7"
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