BMP280_Drv.c File Reference

Driver files, contain the top layer of the BMP280 API, contains ideally no I2C or SPI specific stuffs. More...

#include "include/BMP280_Drv.h"
#include <assert.h>
#include "external/TivaC_Utils/include/TivaC_Other_Utils.h"
#include "external/TivaC_Utils/include/bit_manipulation.h"
#include "include/BMP280_Utils.h"
#include "include/TivaC_I2C.h"
#include "include/TivaC_SPI.h"

Include dependency graph for BMP280_Drv.c:

Macros
#define	BMP280_BASEADDR   0xF3
#define	RAW_TEM_TOTAL_BYTE   3
#define	RAW_PRESS_TOTAL_BYTE   3
#define	BMP280_CALIB_START_ADDR   0x88
#define	BMP280_RESADDR   0xE0
#define	BMP280_IDARR   0xD0
#define	BMP280_MEASURING_MASK   0x8
#define	BMP280_UPDATING_MASK   0x1

Enumerations
enum	bmp280_regName {   Status = 0, Ctrl_meas, Config, Press_msb = 4,   Press_lsb, Press_xlsb, Temp_msb, Temp_lsb,   Temp_xlsb }

Functions
Bmp280ErrCode	bmp280_create_predefined_settings (bmp280 *sensor, const Bmp280MeasureSettings settings)
	initialize the bmp280 with predefined value in the datasheet More...
Bmp280ErrCode	bmp280_create_custom_setting (bmp280 *sensor, const Bmp280Coeff tempSamp, const Bmp280Coeff presSamp, const Bmp280Coeff iirFilter, const Bmp280SamplSettings samplSet, const Bmp280OperMode mode, const float standbyTime)
	initialize the bmp280 struct with options from user More...
Bmp280ErrCode	bmp280_init (bmp280 *sensor, const Bmp280ComProtocol protocol, const uint8_t address)
	check settings, set the bmp280 address and desired communication protocols
Bmp280ErrCode	bmp280_open (bmp280 *sensor)
	prepare the i2c/spi port for communications
Bmp280ErrCode	bmp280_close (bmp280 *sensor)
	close the ports
Bmp280ErrCode	bmp280_get_id (bmp280 *sensor, uint8_t *returnID)
	get bmp280 sensor ID, should 0x58 or 88 in decimal
Bmp280ErrCode	bmp280_reset (bmp280 *sensor)
	perform power reset on the bmp280 There is a 5ms seconds delay to allow the bmp280 to properly wake up
Bmp280ErrCode	bmp280_update_setting (bmp280 *sensor)
	used to write setting sin the bmp280 struct to the control and config register of the bmp280
Bmp280ErrCode	bmp280_get_ctr_meas (bmp280 *sensor, uint8_t *ctrlMeasReturn)
	read data from control register
Bmp280ErrCode	bmp280_get_config (bmp280 *sensor, uint8_t *configReturn)
	read data from config register
Bmp280ErrCode	bmp280_get_status (bmp280 *sensor)
	read bmp280 status and change last known status of the sensor
Bmp280ErrCode	bmp280_get_temp_press (bmp280 *sensor, float *temperatureC, float *pressPa, Bmp280CalibParam calibParam)
	used to read compensated temperature and pressure More...
Bmp280ErrCode	bmp280_get_calibration_data (bmp280 *sensor, Bmp280CalibParam *calibParam)
	used to read factory calibration data from the bmp280

Detailed Description

Driver files, contain the top layer of the BMP280 API, contains ideally no I2C or SPI specific stuffs.

Author

Khoi Trinh

Date

2018-08-25

Function Documentation

Bmp280ErrCode bmp280_create_custom_setting	(	bmp280 *	sensor,
		const Bmp280Coeff	tempSamp,
		const Bmp280Coeff	presSamp,
		const Bmp280Coeff	iirFilter,
		const Bmp280SamplSettings	samplSet,
		const Bmp280OperMode	mode,
		const float	standbyTime
	)

initialize the bmp280 struct with options from user

Returns

no error or user settings violated some rules

Bmp280ErrCode bmp280_create_predefined_settings	(	bmp280 *	sensor,
		const Bmp280MeasureSettings	settings
	)

initialize the bmp280 with predefined value in the datasheet

Returns

no error or user settings violated some rules

Bmp280ErrCode bmp280_get_temp_press	(	bmp280 *	sensor,
		float *	temperatureC,
		float *	pressPa,
		Bmp280CalibParam	calibParam
	)

used to read compensated temperature and pressure

Parameters

temperatureC	return temperature
pressPa	return pressure
calibParam	calibration data obtained beforehand