BAP - Barometric Pressure Sensor
BSP > Thunderboard Sense BSP

Detailed Description

Driver for the Bosch Sensortec BMP280 pressure sensor.

Data Structures

struct __BAP_Config
Structure to configure the BMP280 device.

Typedefs

typedef struct __BAP_Config BAP_Config
Structure to configure the BMP280 device.

Functions

uint32_t BAP_config ( BAP_Config *cfg)
Configure the barometric pressure sensor.
void BAP_deInit (void)
De-initializes the barometric pressure module.
uint32_t BAP_getPressure (float *pressure)
Initiates pressure measurement on the barometric pressure sensor and reads pressure from it.
uint32_t BAP_getTemperature (float *temperature)
Initiates temperature measurement on the barometric pressure sensor and reads pressure from it.
uint32_t BAP_init (uint8_t *deviceId)
Initializes the barometric pressure sensor chip.

Error Codes

#define BAP_OK 0x0000
#define BAP_ERROR_DRIVER_NOT_INITIALIZED 0x0001
#define BAP_ERROR_I2C_TRANSACTION_FAILED 0x0002
#define BAP_ERROR_DEVICE_ID_MISMATCH 0x0003

Macro Definition Documentation

#define BAP_ERROR_DEVICE_ID_MISMATCH   0x0003

The device ID does not match the expected value

Definition at line 48 of file bap.h .

Referenced by BAP_init() .

#define BAP_ERROR_DRIVER_NOT_INITIALIZED   0x0001

The driver is not initialized

Definition at line 46 of file bap.h .

#define BAP_ERROR_I2C_TRANSACTION_FAILED   0x0002

I2C transaction failed

Definition at line 47 of file bap.h .

#define BAP_OK   0x0000

No errors

Definition at line 45 of file bap.h .

Referenced by BAP_getPressure() , BAP_getTemperature() , and BAP_init() .

Function Documentation

uint32_t BAP_config ( BAP_Config * cfg )

Configure the barometric pressure sensor.

Parameters
[in] cfg Structure, which holds the configuration parameters
Returns
Returns zero on OK, non-zero otherwise

Definition at line 158 of file bap.c .

References bmp280_set_power_mode() , bmp280_set_standby_durn() , bmp280_set_work_mode() , __BAP_Config::oversampling , __BAP_Config::powerMode , and __BAP_Config::standbyTime .

void BAP_deInit ( void )

De-initializes the barometric pressure module.

Returns
None

Definition at line 138 of file bap.c .

References bmp280_set_power_mode() , and BOARD_bapEnable() .

uint32_t BAP_getPressure ( float * pressure )

Initiates pressure measurement on the barometric pressure sensor and reads pressure from it.

Parameters
[out] pressure The measured pressure in millibars
Returns
Returns zero on OK, non-zero otherwise

Definition at line 218 of file bap.c .

References BAP_OK , bmp280_compensate_pressure_int64() , bmp280_compensate_temperature_int32() , bmp280_get_forced_uncomp_pressure_temperature() , bmp280_read_uncomp_pressure() , and bmp280_read_uncomp_temperature() .

uint32_t BAP_getTemperature ( float * temperature )

Initiates temperature measurement on the barometric pressure sensor and reads pressure from it.

Parameters
[out] temperature The measured temperature in degrees Celsius
Returns
Returns zero on OK, non-zero otherwise

Definition at line 183 of file bap.c .

References BAP_OK , bmp280_compensate_temperature_int32() , bmp280_get_forced_uncomp_pressure_temperature() , and bmp280_read_uncomp_temperature() .

uint32_t BAP_init ( uint8_t * deviceId )

Initializes the barometric pressure sensor chip.

Parameters
[out] deviceId The device ID of the connected chip
Returns
Returns zero on OK, non-zero otherwise

Definition at line 84 of file bap.c .

References BAP_ERROR_DEVICE_ID_MISMATCH , BAP_OK , bmp280_init() , bmp280_set_power_mode() , bmp280_set_work_mode() , BOARD_bapEnable() , bmp280_t::delay_msec , bmp280_t::dev_addr , and UTIL_delay() .