BMP3xx - Barometric Pressure Sensor#

Driver for the Bosch Sensortec BMP3xx barometric pressure sensor.

BMP3xx example#

Basic example to perform pressure measurement:

#include "sl_i2cspm_instances.h"
#include "sl_bmp3xx.h"

  int main( void )
  {

    ...

    float pressure;
    int8_t result;

    result = sl_bmp3xx_init(sl_i2cspm_sensor_env);

    if (result != SL_STATUS_OK) {
      return SL_STATUS_FAIL;
    }

    result = sl_bmp3xx_measure_pressure(sl_i2cspm_sensor_env, &pressure);

    if (result != SL_STATUS_OK) {
      return SL_STATUS_FAIL;
    }

    ...

  }

Modules#

sl_bmp3xx_config_t

Functions#

sl_status_t

sl_bmp3xx_init(sl_i2cspm_t *i2cspm)

Initialize the barometric pressure sensor chip.

void

sl_bmp3xx_deinit(sl_i2cspm_t *i2cspm)

De-initialize the barometric pressure module.

sl_status_t

sl_bmp3xx_set_config(sl_i2cspm_t *i2cspm, sl_bmp3xx_config_t *cfg)

Set the barometric pressure sensor configuration.

void

sl_bmp3xx_get_config(sl_i2cspm_t *i2cspm, sl_bmp3xx_config_t *cfg)

Get the barometric pressure sensor configuration.

sl_status_t

sl_bmp3xx_measure_temperature(sl_i2cspm_t *i2cspm, float *temperature)

Initiate temperature measurement on the barometric pressure sensor and read temperature from it.

sl_status_t

sl_bmp3xx_measure_pressure(sl_i2cspm_t *i2cspm, float *pressure)

Initiate pressure measurement on the barometric pressure sensor and read pressure from it.

Function Documentation#

sl_bmp3xx_init#

sl_status_t sl_bmp3xx_init (sl_i2cspm_t * i2cspm)

Initialize the barometric pressure sensor chip.

Parameters

[in]

i2cspm

The I2CSPM instance to use.

Definition at line 128 of file hardware/driver/bmp3xx/inc/sl_bmp3xx.h

sl_bmp3xx_deinit#

void sl_bmp3xx_deinit (sl_i2cspm_t * i2cspm)

De-initialize the barometric pressure module.

Parameters

[in]

i2cspm

The I2CSPM instance to use.

Definition at line 137 of file hardware/driver/bmp3xx/inc/sl_bmp3xx.h

sl_bmp3xx_set_config#

sl_status_t sl_bmp3xx_set_config (sl_i2cspm_t * i2cspm, sl_bmp3xx_config_t * cfg)

Set the barometric pressure sensor configuration.

Parameters

[in]	i2cspm	The I2CSPM instance to use.
[in]	cfg	Structure, which holds the configuration parameters

Note

Make sure to pass by Sleep Mode before switching between forced mode and normal mode. Refer to datasheet for more details.

Definition at line 156 of file hardware/driver/bmp3xx/inc/sl_bmp3xx.h

sl_bmp3xx_get_config#

void sl_bmp3xx_get_config (sl_i2cspm_t * i2cspm, sl_bmp3xx_config_t * cfg)

Get the barometric pressure sensor configuration.

Parameters

[in]	i2cspm	The I2CSPM instance to use.
[out]	cfg	Structure to get the sensor configuration.

Definition at line 168 of file hardware/driver/bmp3xx/inc/sl_bmp3xx.h

sl_bmp3xx_measure_temperature#

sl_status_t sl_bmp3xx_measure_temperature (sl_i2cspm_t * i2cspm, float * temperature)

Initiate temperature measurement on the barometric pressure sensor and read temperature from it.

Parameters

[in]	i2cspm	The I2CSPM instance to use.
[out]	temperature	The measured temperature in degrees Celsius

It is a blocking function.

Definition at line 184 of file hardware/driver/bmp3xx/inc/sl_bmp3xx.h

sl_bmp3xx_measure_pressure#

sl_status_t sl_bmp3xx_measure_pressure (sl_i2cspm_t * i2cspm, float * pressure)

Initiate pressure measurement on the barometric pressure sensor and read pressure from it.

Parameters

[in]	i2cspm	The I2CSPM instance to use.
[out]	pressure	The measured pressure in Pascal.

It is a blocking function.

Definition at line 200 of file hardware/driver/bmp3xx/inc/sl_bmp3xx.h