EFM32 Gecko Software Documentation  efm32g-doc-5.1.2
bmp280.h File Reference

Detailed Description

BMP280 Sensor Driver Support Header File.

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Copyright (C) 2015 - 2016 Bosch Sensortec GmbH

File : bmp280.h

Date : 2016/07/01

Revision : 2.0.5(Pressure and Temperature compensation code revision is 1.1)

Usage: Sensor Driver for BMP280 sensor

License

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

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Neither the name of the copyright holder nor the names of the contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE

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Definition in file bmp280.h.

Go to the source code of this file.

Data Structures

struct  bmp280_calib_param_t
 This structure holds all device specific calibration parameters. More...
 
struct  bmp280_t
 This structure holds BMP280 initialization parameters. More...
 

Macros

#define BMP280_64BITSUPPORT_PRESENT
 
#define MACHINE_32_BIT
 The following definition uses for define the data types. More...
 
ENABLE FLOATING OUTPUT
#define BMP280_ENABLE_FLOAT
 If the user wants to support floating point calculations, please set the following define. If floating point calculation is not wanted or allowed (e.g. in Linux kernel), please do not set the definition.
 
#define BMP280_ENABLE_INT64
 If the user wants to support 64 bit integer calculation (needed for optimal pressure accuracy) please set the following definition. If int64 calculation is not wanted (e.g. because it would include large libraries), please do not set the definition.
 
BUS READ AND WRITE FUNCTION POINTERS
#define BMP280_BUS_WR_RETURN_TYPE   s8
 Define the calling convention of YOUR bus communication routine. More...
 
#define BMP280_BUS_WR_PARAM_TYPES
 
#define BMP280_BUS_WR_PARAM_ORDER(device_addr, register_addr, register_data, wr_len)
 
#define BMP280_BUS_WRITE_FUNC(device_addr, register_addr, register_data, wr_len)
 
#define BMP280_BUS_RD_RETURN_TYPE   s8
 link macro between API function calls and bus read function More...
 
#define BMP280_BUS_RD_PARAM_TYPES
 
#define BMP280_BUS_RD_PARAM_ORDER
 
#define BMP280_BUS_READ_FUNC(device_addr, register_addr, register_data, rd_len)
 
#define BMP280_WR_FUNC_PTR   s8 (*bus_write)(u8, u8, u8 *, u8)
 
#define BMP280_RD_FUNC_PTR   s8 (*bus_read)(u8, u8, u8 *, u8)
 
#define BMP280_MDELAY_DATA_TYPE   u32
 
DELAY
#define BMP280_DELAY_RETURN_TYPE   void
 defines the return parameter type of the BMP280_DELAY_FUNCTION
 
#define BMP280_DELAY_PARAM_TYPES   u16
 defines the calling parameter types of the BMP280_DELAY_FUNCTION
 
GET AND SET BITSLICE FUNCTIONS
#define BMP280_DELAY_FUNC(delay_in_msec)   delay_func(delay_in_msec)
 
#define BMP280_GET_BITSLICE(regvar, bitname)   ((regvar & bitname##__MSK) >> bitname##__POS)
 
#define BMP280_SET_BITSLICE(regvar, bitname, val)   ((regvar & ~bitname##__MSK) | ((val<<bitname##__POS)&bitname##__MSK))
 
COMMON USED CONSTANTS
#define BMP280_NULL   (0)
 
#define BMP280_RETURN_FUNCTION_TYPE   s8
 
#define BMP280_SHIFT_BIT_POSITION_BY_01_BIT   (1)
 
#define BMP280_SHIFT_BIT_POSITION_BY_02_BITS   (2)
 
#define BMP280_SHIFT_BIT_POSITION_BY_03_BITS   (3)
 
#define BMP280_SHIFT_BIT_POSITION_BY_04_BITS   (4)
 
#define BMP280_SHIFT_BIT_POSITION_BY_05_BITS   (5)
 
#define BMP280_SHIFT_BIT_POSITION_BY_08_BITS   (8)
 
#define BMP280_SHIFT_BIT_POSITION_BY_11_BITS   (11)
 
#define BMP280_SHIFT_BIT_POSITION_BY_12_BITS   (12)
 
#define BMP280_SHIFT_BIT_POSITION_BY_13_BITS   (13)
 
#define BMP280_SHIFT_BIT_POSITION_BY_14_BITS   (14)
 
#define BMP280_SHIFT_BIT_POSITION_BY_15_BITS   (15)
 
#define BMP280_SHIFT_BIT_POSITION_BY_16_BITS   (16)
 
#define BMP280_SHIFT_BIT_POSITION_BY_17_BITS   (17)
 
#define BMP280_SHIFT_BIT_POSITION_BY_18_BITS   (18)
 
#define BMP280_SHIFT_BIT_POSITION_BY_19_BITS   (19)
 
#define BMP280_SHIFT_BIT_POSITION_BY_25_BITS   (25)
 
#define BMP280_SHIFT_BIT_POSITION_BY_31_BITS   (31)
 
#define BMP280_SHIFT_BIT_POSITION_BY_33_BITS   (33)
 
#define BMP280_SHIFT_BIT_POSITION_BY_35_BITS   (35)
 
#define BMP280_SHIFT_BIT_POSITION_BY_47_BITS   (47)
 
#define BMP280_PRESSURE_TEMPERATURE_CALIB_DATA_LENGTH   (24)
 
#define BMP280_GEN_READ_WRITE_DATA_LENGTH   (1)
 
#define BMP280_REGISTER_READ_DELAY   (1)
 
#define BMP280_TEMPERATURE_DATA_LENGTH   (3)
 
#define BMP280_PRESSURE_DATA_LENGTH   (3)
 
#define BMP280_ALL_DATA_FRAME_LENGTH   (6)
 
#define BMP280_INIT_VALUE   (0)
 
#define BMP280_CHIP_ID_READ_COUNT   (5)
 
#define BMP280_CHIP_ID_READ_SUCCESS   (0)
 
#define BMP280_CHIP_ID_READ_FAIL   ((s8)-1)
 
#define BMP280_INVALID_DATA   (0)
 
ERROR CODES
#define SUCCESS   ((u8)0)
 
#define E_BMP280_NULL_PTR   ((s8)-127)
 
#define E_BMP280_COMM_RES   ((s8)-1)
 
#define E_BMP280_OUT_OF_RANGE   ((s8)-2)
 
#define ERROR   ((s8)-1)
 
CHIP ID DEFINITION
#define BMP280_CHIP_ID1   (0x56)
 
#define BMP280_CHIP_ID2   (0x57)
 
#define BMP280_CHIP_ID3   (0x58)
 
I2C ADDRESS DEFINITION
#define BMP280_I2C_ADDRESS1   (0x76)
 
#define BMP280_I2C_ADDRESS2   (0x77)
 
POWER MODE DEFINITION
#define BMP280_SLEEP_MODE   (0x00)
 
#define BMP280_FORCED_MODE   (0x01)
 
#define BMP280_NORMAL_MODE   (0x03)
 
#define BMP280_SOFT_RESET_CODE   (0xB6)
 
STANDBY TIME DEFINITION
#define BMP280_STANDBY_TIME_1_MS   (0x00)
 
#define BMP280_STANDBY_TIME_63_MS   (0x01)
 
#define BMP280_STANDBY_TIME_125_MS   (0x02)
 
#define BMP280_STANDBY_TIME_250_MS   (0x03)
 
#define BMP280_STANDBY_TIME_500_MS   (0x04)
 
#define BMP280_STANDBY_TIME_1000_MS   (0x05)
 
#define BMP280_STANDBY_TIME_2000_MS   (0x06)
 
#define BMP280_STANDBY_TIME_4000_MS   (0x07)
 
OVERSAMPLING DEFINITION
#define BMP280_OVERSAMP_SKIPPED   (0x00)
 
#define BMP280_OVERSAMP_1X   (0x01)
 
#define BMP280_OVERSAMP_2X   (0x02)
 
#define BMP280_OVERSAMP_4X   (0x03)
 
#define BMP280_OVERSAMP_8X   (0x04)
 
#define BMP280_OVERSAMP_16X   (0x05)
 
WORKING MODE DEFINITION
#define BMP280_ULTRA_LOW_POWER_MODE   (0x00)
 
#define BMP280_LOW_POWER_MODE   (0x01)
 
#define BMP280_STANDARD_RESOLUTION_MODE   (0x02)
 
#define BMP280_HIGH_RESOLUTION_MODE   (0x03)
 
#define BMP280_ULTRA_HIGH_RESOLUTION_MODE   (0x04)
 
#define BMP280_ULTRALOWPOWER_OVERSAMP_PRESSURE   BMP280_OVERSAMP_1X
 
#define BMP280_ULTRALOWPOWER_OVERSAMP_TEMPERATURE   BMP280_OVERSAMP_1X
 
#define BMP280_LOWPOWER_OVERSAMP_PRESSURE   BMP280_OVERSAMP_2X
 
#define BMP280_LOWPOWER_OVERSAMP_TEMPERATURE   BMP280_OVERSAMP_1X
 
#define BMP280_STANDARDRESOLUTION_OVERSAMP_PRESSURE   BMP280_OVERSAMP_4X
 
#define BMP280_STANDARDRESOLUTION_OVERSAMP_TEMPERATURE   BMP280_OVERSAMP_1X
 
#define BMP280_HIGHRESOLUTION_OVERSAMP_PRESSURE   BMP280_OVERSAMP_8X
 
#define BMP280_HIGHRESOLUTION_OVERSAMP_TEMPERATURE   BMP280_OVERSAMP_1X
 
#define BMP280_ULTRAHIGHRESOLUTION_OVERSAMP_PRESSURE   BMP280_OVERSAMP_16X
 
#define BMP280_ULTRAHIGHRESOLUTION_OVERSAMP_TEMPERATURE   BMP280_OVERSAMP_2X
 
FILTER DEFINITION
#define BMP280_FILTER_COEFF_OFF   (0x00)
 
#define BMP280_FILTER_COEFF_2   (0x01)
 
#define BMP280_FILTER_COEFF_4   (0x02)
 
#define BMP280_FILTER_COEFF_8   (0x03)
 
#define BMP280_FILTER_COEFF_16   (0x04)
 
DELAY TIME DEFINITION
#define T_INIT_MAX   (20)
 
#define T_MEASURE_PER_OSRS_MAX   (37)
 
#define T_SETUP_PRESSURE_MAX   (10)
 
CALIBRATION PARAMETERS DEFINITION
#define BMP280_TEMPERATURE_CALIB_DIG_T1_LSB_REG   (0x88)
 
#define BMP280_TEMPERATURE_CALIB_DIG_T1_MSB_REG   (0x89)
 
#define BMP280_TEMPERATURE_CALIB_DIG_T2_LSB_REG   (0x8A)
 
#define BMP280_TEMPERATURE_CALIB_DIG_T2_MSB_REG   (0x8B)
 
#define BMP280_TEMPERATURE_CALIB_DIG_T3_LSB_REG   (0x8C)
 
#define BMP280_TEMPERATURE_CALIB_DIG_T3_MSB_REG   (0x8D)
 
#define BMP280_PRESSURE_CALIB_DIG_P1_LSB_REG   (0x8E)
 
#define BMP280_PRESSURE_CALIB_DIG_P1_MSB_REG   (0x8F)
 
#define BMP280_PRESSURE_CALIB_DIG_P2_LSB_REG   (0x90)
 
#define BMP280_PRESSURE_CALIB_DIG_P2_MSB_REG   (0x91)
 
#define BMP280_PRESSURE_CALIB_DIG_P3_LSB_REG   (0x92)
 
#define BMP280_PRESSURE_CALIB_DIG_P3_MSB_REG   (0x93)
 
#define BMP280_PRESSURE_CALIB_DIG_P4_LSB_REG   (0x94)
 
#define BMP280_PRESSURE_CALIB_DIG_P4_MSB_REG   (0x95)
 
#define BMP280_PRESSURE_CALIB_DIG_P5_LSB_REG   (0x96)
 
#define BMP280_PRESSURE_CALIB_DIG_P5_MSB_REG   (0x97)
 
#define BMP280_PRESSURE_CALIB_DIG_P6_LSB_REG   (0x98)
 
#define BMP280_PRESSURE_CALIB_DIG_P6_MSB_REG   (0x99)
 
#define BMP280_PRESSURE_CALIB_DIG_P7_LSB_REG   (0x9A)
 
#define BMP280_PRESSURE_CALIB_DIG_P7_MSB_REG   (0x9B)
 
#define BMP280_PRESSURE_CALIB_DIG_P8_LSB_REG   (0x9C)
 
#define BMP280_PRESSURE_CALIB_DIG_P8_MSB_REG   (0x9D)
 
#define BMP280_PRESSURE_CALIB_DIG_P9_LSB_REG   (0x9E)
 
#define BMP280_PRESSURE_CALIB_DIG_P9_MSB_REG   (0x9F)
 
REGISTER ADDRESS DEFINITION
#define BMP280_CHIP_ID_REG   (0xD0) /*Chip ID Register */
 
#define BMP280_RST_REG   (0xE0) /*Softreset Register */
 
#define BMP280_STAT_REG   (0xF3) /*Status Register */
 
#define BMP280_CTRL_MEAS_REG   (0xF4) /*Ctrl Measure Register */
 
#define BMP280_CONFIG_REG   (0xF5) /*Configuration Register */
 
#define BMP280_PRESSURE_MSB_REG   (0xF7) /*Pressure MSB Register */
 
#define BMP280_PRESSURE_LSB_REG   (0xF8) /*Pressure LSB Register */
 
#define BMP280_PRESSURE_XLSB_REG   (0xF9) /*Pressure XLSB Register */
 
#define BMP280_TEMPERATURE_MSB_REG   (0xFA) /*Temperature MSB Reg */
 
#define BMP280_TEMPERATURE_LSB_REG   (0xFB) /*Temperature LSB Reg */
 
#define BMP280_TEMPERATURE_XLSB_REG   (0xFC) /*Temperature XLSB Reg */
 
BIT LENGTH,POSITION AND MASK DEFINITION

FOR PRESSURE AND TEMPERATURE DATA REGISTERS

#define BMP280_STATUS_REG_MEASURING__POS   (3)
 
#define BMP280_STATUS_REG_MEASURING__MSK   (0x08)
 
#define BMP280_STATUS_REG_MEASURING__LEN   (1)
 
#define BMP280_STATUS_REG_MEASURING__REG   (BMP280_STAT_REG)
 
#define BMP280_STATUS_REG_IM_UPDATE__POS   (0)
 
#define BMP280_STATUS_REG_IM_UPDATE__MSK   (0x01)
 
#define BMP280_STATUS_REG_IM_UPDATE__LEN   (1)
 
#define BMP280_STATUS_REG_IM_UPDATE__REG   (BMP280_STAT_REG)
 
#define BMP280_CTRL_MEAS_REG_OVERSAMP_TEMPERATURE__POS   (5)
 
#define BMP280_CTRL_MEAS_REG_OVERSAMP_TEMPERATURE__MSK   (0xE0)
 
#define BMP280_CTRL_MEAS_REG_OVERSAMP_TEMPERATURE__LEN   (3)
 
#define BMP280_CTRL_MEAS_REG_OVERSAMP_TEMPERATURE__REG   (BMP280_CTRL_MEAS_REG)
 
#define BMP280_CTRL_MEAS_REG_OVERSAMP_PRESSURE__POS   (2)
 
#define BMP280_CTRL_MEAS_REG_OVERSAMP_PRESSURE__MSK   (0x1C)
 
#define BMP280_CTRL_MEAS_REG_OVERSAMP_PRESSURE__LEN   (3)
 
#define BMP280_CTRL_MEAS_REG_OVERSAMP_PRESSURE__REG   (BMP280_CTRL_MEAS_REG)
 
#define BMP280_CTRL_MEAS_REG_POWER_MODE__POS   (0)
 
#define BMP280_CTRL_MEAS_REG_POWER_MODE__MSK   (0x03)
 
#define BMP280_CTRL_MEAS_REG_POWER_MODE__LEN   (2)
 
#define BMP280_CTRL_MEAS_REG_POWER_MODE__REG   (BMP280_CTRL_MEAS_REG)
 
#define BMP280_CONFIG_REG_STANDBY_DURN__POS   (5)
 
#define BMP280_CONFIG_REG_STANDBY_DURN__MSK   (0xE0)
 
#define BMP280_CONFIG_REG_STANDBY_DURN__LEN   (3)
 
#define BMP280_CONFIG_REG_STANDBY_DURN__REG   (BMP280_CONFIG_REG)
 
#define BMP280_CONFIG_REG_FILTER__POS   (2)
 
#define BMP280_CONFIG_REG_FILTER__MSK   (0x1C)
 
#define BMP280_CONFIG_REG_FILTER__LEN   (3)
 
#define BMP280_CONFIG_REG_FILTER__REG   (BMP280_CONFIG_REG)
 
#define BMP280_CONFIG_REG_SPI3_ENABLE__POS   (0)
 
#define BMP280_CONFIG_REG_SPI3_ENABLE__MSK   (0x01)
 
#define BMP280_CONFIG_REG_SPI3_ENABLE__LEN   (1)
 
#define BMP280_CONFIG_REG_SPI3_ENABLE__REG   (BMP280_CONFIG_REG)
 
#define BMP280_PRESSURE_XLSB_REG_DATA__POS   (4)
 
#define BMP280_PRESSURE_XLSB_REG_DATA__MSK   (0xF0)
 
#define BMP280_PRESSURE_XLSB_REG_DATA__LEN   (4)
 
#define BMP280_PRESSURE_XLSB_REG_DATA__REG   (BMP280_PRESSURE_XLSB_REG)
 
#define BMP280_TEMPERATURE_XLSB_REG_DATA__POS   (4)
 
#define BMP280_TEMPERATURE_XLSB_REG_DATA__MSK   (0xF0)
 
#define BMP280_TEMPERATURE_XLSB_REG_DATA__LEN   (4)
 
#define BMP280_TEMPERATURE_XLSB_REG_DATA__REG   (BMP280_TEMPERATURE_XLSB_REG)
 
DEFINITIONS FOR ARRAY SIZE OF DATA
#define BMP280_TEMPERATURE_DATA_SIZE   (3)
 
#define BMP280_PRESSURE_DATA_SIZE   (3)
 
#define BMP280_DATA_FRAME_SIZE   (6)
 
#define BMP280_CALIB_DATA_SIZE   (24)
 
#define BMP280_TEMPERATURE_MSB_DATA   (0)
 
#define BMP280_TEMPERATURE_LSB_DATA   (1)
 
#define BMP280_TEMPERATURE_XLSB_DATA   (2)
 
#define BMP280_PRESSURE_MSB_DATA   (0)
 
#define BMP280_PRESSURE_LSB_DATA   (1)
 
#define BMP280_PRESSURE_XLSB_DATA   (2)
 
#define BMP280_DATA_FRAME_PRESSURE_MSB_BYTE   (0)
 
#define BMP280_DATA_FRAME_PRESSURE_LSB_BYTE   (1)
 
#define BMP280_DATA_FRAME_PRESSURE_XLSB_BYTE   (2)
 
#define BMP280_DATA_FRAME_TEMPERATURE_MSB_BYTE   (3)
 
#define BMP280_DATA_FRAME_TEMPERATURE_LSB_BYTE   (4)
 
#define BMP280_DATA_FRAME_TEMPERATURE_XLSB_BYTE   (5)
 
ARRAY PARAMETER FOR CALIBRATION
#define BMP280_TEMPERATURE_CALIB_DIG_T1_LSB   (0)
 
#define BMP280_TEMPERATURE_CALIB_DIG_T1_MSB   (1)
 
#define BMP280_TEMPERATURE_CALIB_DIG_T2_LSB   (2)
 
#define BMP280_TEMPERATURE_CALIB_DIG_T2_MSB   (3)
 
#define BMP280_TEMPERATURE_CALIB_DIG_T3_LSB   (4)
 
#define BMP280_TEMPERATURE_CALIB_DIG_T3_MSB   (5)
 
#define BMP280_PRESSURE_CALIB_DIG_P1_LSB   (6)
 
#define BMP280_PRESSURE_CALIB_DIG_P1_MSB   (7)
 
#define BMP280_PRESSURE_CALIB_DIG_P2_LSB   (8)
 
#define BMP280_PRESSURE_CALIB_DIG_P2_MSB   (9)
 
#define BMP280_PRESSURE_CALIB_DIG_P3_LSB   (10)
 
#define BMP280_PRESSURE_CALIB_DIG_P3_MSB   (11)
 
#define BMP280_PRESSURE_CALIB_DIG_P4_LSB   (12)
 
#define BMP280_PRESSURE_CALIB_DIG_P4_MSB   (13)
 
#define BMP280_PRESSURE_CALIB_DIG_P5_LSB   (14)
 
#define BMP280_PRESSURE_CALIB_DIG_P5_MSB   (15)
 
#define BMP280_PRESSURE_CALIB_DIG_P6_LSB   (16)
 
#define BMP280_PRESSURE_CALIB_DIG_P6_MSB   (17)
 
#define BMP280_PRESSURE_CALIB_DIG_P7_LSB   (18)
 
#define BMP280_PRESSURE_CALIB_DIG_P7_MSB   (19)
 
#define BMP280_PRESSURE_CALIB_DIG_P8_LSB   (20)
 
#define BMP280_PRESSURE_CALIB_DIG_P8_MSB   (21)
 
#define BMP280_PRESSURE_CALIB_DIG_P9_LSB   (22)
 
#define BMP280_PRESSURE_CALIB_DIG_P9_MSB   (23)
 

Typedefs

typedef signed short int s16
 
typedef signed int s32
 
typedef signed long long int s64
 
typedef signed char s8
 
typedef unsigned short int u16
 
typedef unsigned int u32
 
typedef unsigned long long int u64
 
typedef unsigned char u8
 

Functions

FUNCTION FOR INTIALIZATION
BMP280_RETURN_FUNCTION_TYPE bmp280_init (struct bmp280_t *bmp280)
 This function is used for initialize the bus read and bus write functions and assign the chip id and I2C address of the BMP280 sensor chip id is read in the register 0xD0 bit from 0 to 7. More...
 
FUNCTION FOR READ UNCOMPENSATED TEMPERATURE
BMP280_RETURN_FUNCTION_TYPE bmp280_read_uncomp_temperature (s32 *v_uncomp_temperature_s32)
 This API is used to read uncompensated temperature in the registers 0xFA, 0xFB and 0xFC. More...
 
FUNCTION FOR READ TRUE TEMPERATURE S32 OUTPUT
s32 bmp280_compensate_temperature_int32 (s32 v_uncomp_temperature_s32)
 Reads actual temperature from uncompensated temperature. More...
 
FUNCTION FOR READ UNCOMPENSATED PRESSURE
BMP280_RETURN_FUNCTION_TYPE bmp280_read_uncomp_pressure (s32 *v_uncomp_pressure_s32)
 This API is used to read uncompensated pressure. in the registers 0xF7, 0xF8 and 0xF9. More...
 
FUNCTION FOR READ TRUE PRESSURE S32 OUTPUT
u32 bmp280_compensate_pressure_int32 (s32 v_uncomp_pressure_s32)
 Reads actual pressure from uncompensated pressure and returns the value in Pascal(Pa) More...
 
FUNCTION FOR READ UNCOMPENSATED TEMPERATURE AND PRESSURE
BMP280_RETURN_FUNCTION_TYPE bmp280_read_uncomp_pressure_temperature (s32 *v_uncomp_pressure_s32, s32 *v_uncomp_temperature_s32)
 reads uncompensated pressure and temperature More...
 
FUNCTION FOR READ TRUE TEMPERATURE AND PRESSURE
BMP280_RETURN_FUNCTION_TYPE bmp280_read_pressure_temperature (u32 *v_pressure_u32, s32 *v_pressure_s32)
 This API reads the true pressure and temperature. More...
 
FUNCTION FOR READ CALIBRATION DATA
BMP280_RETURN_FUNCTION_TYPE bmp280_get_calib_param (void)
 This API is used to calibration parameters used for calculation in the registers. More...
 
FUNCTION FOR OVERSAMPLING TEMPERATURE AND PRESSURE
BMP280_RETURN_FUNCTION_TYPE bmp280_get_oversamp_temperature (u8 *v_value_u8)
 This API is used to get the temperature oversampling setting in the register 0xF4 bits from 5 to 7. More...
 
BMP280_RETURN_FUNCTION_TYPE bmp280_set_oversamp_temperature (u8 v_value_u8)
 This API is used to set the temperature oversampling setting in the register 0xF4 bits from 5 to 7. More...
 
BMP280_RETURN_FUNCTION_TYPE bmp280_get_oversamp_pressure (u8 *v_value_u8)
 This API is used to get the pressure oversampling setting in the register 0xF4 bits from 2 to 4. More...
 
BMP280_RETURN_FUNCTION_TYPE bmp280_set_oversamp_pressure (u8 v_value_u8)
 This API is used to set the pressure oversampling setting in the register 0xF4 bits from 2 to 4. More...
 
FUNCTION FOR POWER MODE
BMP280_RETURN_FUNCTION_TYPE bmp280_get_power_mode (u8 *v_power_mode_u8)
 This API used to get the Operational Mode from the sensor in the register 0xF4 bit 0 and 1. More...
 
BMP280_RETURN_FUNCTION_TYPE bmp280_set_power_mode (u8 v_power_mode_u8)
 This API used to set the Operational Mode from the sensor in the register 0xF4 bit 0 and 1. More...
 
FUNCTION FOR SOFT RESET
BMP280_RETURN_FUNCTION_TYPE bmp280_set_soft_rst (void)
 Used to reset the sensor The value 0xB6 is written to the 0xE0 register the device is reset using the complete power-on-reset procedure. Soft reset can be easily set using bmp280_set_softreset(). More...
 
FUNCTION FOR SPI ENABLE
BMP280_RETURN_FUNCTION_TYPE bmp280_get_spi3 (u8 *v_enable_disable_u8)
 This API used to get the sensor SPI mode(communication type) in the register 0xF5 bit 0. More...
 
BMP280_RETURN_FUNCTION_TYPE bmp280_set_spi3 (u8 v_enable_disable_u8)
 This API used to set the sensor SPI mode(communication type) in the register 0xF5 bit 0. More...
 
FUNCTION FOR IIR FILTER SETTING
BMP280_RETURN_FUNCTION_TYPE bmp280_get_filter (u8 *v_value_u8)
 This API is used to reads filter setting in the register 0xF5 bit 3 and 4. More...
 
BMP280_RETURN_FUNCTION_TYPE bmp280_set_filter (u8 v_value_u8)
 This API is used to write filter setting in the register 0xF5 bit 3 and 4. More...
 
FUNCTION FOR STANDBY DURATION
BMP280_RETURN_FUNCTION_TYPE bmp280_get_standby_durn (u8 *v_standby_durn_u8)
 This API used to Read the standby duration time from the sensor in the register 0xF5 bit 5 to 7. More...
 
BMP280_RETURN_FUNCTION_TYPE bmp280_set_standby_durn (u8 v_standby_durn_u8)
 This API used to Read the standby duration time from the sensor in the register 0xF5 bit 5 to 7. More...
 
FUNCTION FOR WORK MODE
BMP280_RETURN_FUNCTION_TYPE bmp280_set_work_mode (u8 v_work_mode_u8)
 This API is used to write the working mode of the sensor. More...
 
FUNCTION FOR FORCE MODE READING
BMP280_RETURN_FUNCTION_TYPE bmp280_get_forced_uncomp_pressure_temperature (s32 *v_uncomp_pressure_s32, s32 *v_uncomp_temperature_s32)
 This API used to read both uncompensated pressure and temperature in forced mode. More...
 
FUNCTION FOR COMMON READ AND WRITE
BMP280_RETURN_FUNCTION_TYPE bmp280_write_register (u8 v_addr_u8, u8 *v_data_u8, u8 v_len_u8)
 This API write the data to the given register. More...
 
BMP280_RETURN_FUNCTION_TYPE bmp280_read_register (u8 v_addr_u8, u8 *v_data_u8, u8 v_len_u8)
 This API reads the data from the given register. More...
 
FUNCTION FOR TRUE TEMPERATURE CALCULATION
double bmp280_compensate_temperature_double (s32 v_uncomp_temperature_s32)
 This API used to read actual temperature from uncompensated temperature. More...
 
FUNCTION FOR TRUE PRESSURE CALCULATION
double bmp280_compensate_pressure_double (s32 v_uncomp_pressure_s32)
 Reads actual pressure from uncompensated pressure and returns pressure in Pa as double. More...
 
u32 bmp280_compensate_pressure_int64 (s32 v_uncomp_pressure_s32)
 This API used to read actual pressure from uncompensated pressure. More...
 
FUNCTION FOR DELAY CALCULATION DURING FORCEMODE
BMP280_RETURN_FUNCTION_TYPE bmp280_compute_wait_time (u8 *v_delaytime_u8r)
 Computing waiting time for sensor data read. More...
 

Macro Definition Documentation

#define BMP280_BUS_RD_PARAM_ORDER
Value:
(device_addr, register_addr,\
register_data)

Definition at line 403 of file bmp280.h.

#define BMP280_BUS_RD_PARAM_TYPES
Value:
(u8, u8,\
u8 *, u8)
unsigned char u8
Definition: bmp280.h:282

Definition at line 397 of file bmp280.h.

#define BMP280_BUS_RD_RETURN_TYPE   s8

link macro between API function calls and bus read function

Note
The bus write function can change since this is a system dependant issue.

If the bus_read parameter calling order is like: reg_addr, reg_data, wr_len it would be as it is here.

If the parameters are differently ordered or your communication function like I2C need to know the device address, you can change this macro accordingly.

BMP280_BUS_READ_FUNC(dev_addr, reg_addr, reg_data, wr_len)\ bus_read(dev_addr, reg_addr, reg_data, wr_len)

This macro lets all API functions call YOUR communication routine in a way that equals your definition in the refer BMP280_WR_FUNC_PTR definition.

Note
: this macro also includes the "MSB='1' for reading BMP280 addresses.

Definition at line 393 of file bmp280.h.

#define BMP280_BUS_READ_FUNC (   device_addr,
  register_addr,
  register_data,
  rd_len 
)
Value:
bus_read(device_addr, register_addr,\
register_data, rd_len)

Definition at line 407 of file bmp280.h.

#define BMP280_BUS_WR_PARAM_TYPES
Value:
u8 *, u8
unsigned char u8
Definition: bmp280.h:282

Definition at line 355 of file bmp280.h.

#define BMP280_BUS_WR_RETURN_TYPE   s8

Define the calling convention of YOUR bus communication routine.

Note
This includes types of parameters. This example shows the configuration for an SPI bus link.

If your communication function looks like this:

write_my_bus_xy(u8 device_addr, u8 register_addr, u8 * data, u8 length);

The BMP280_WR_FUNC_PTR would equal:

BMP280_WR_FUNC_PTR s8 (* bus_write)(u8, u8, u8 *, u8)

Parameters can be mixed as needed refer to the refer BMP280_BUS_WRITE_FUNC macro.

Definition at line 351 of file bmp280.h.

#define BMP280_BUS_WRITE_FUNC (   device_addr,
  register_addr,
  register_data,
  wr_len 
)
Value:
bus_write(device_addr, register_addr,\
register_data, wr_len)

Definition at line 364 of file bmp280.h.

#define MACHINE_32_BIT

The following definition uses for define the data types.

Note
While porting the API please consider the following
Please check the version of C standard
Are you using Linux platform

For the Linux platform support Please use the types.h for your data types definitions

By default it is defined as 32 bit machine configuration define your data types based on your machine/compiler/controller configuration

Definition at line 239 of file bmp280.h.

Typedef Documentation

typedef signed short int s16

used for signed 16bit

Definition at line 277 of file bmp280.h.

typedef signed int s32

used for signed 32bit

Definition at line 278 of file bmp280.h.

typedef signed long long int s64

used for signed 64bit

Definition at line 279 of file bmp280.h.

typedef signed char s8

used for signed 8bit

Definition at line 276 of file bmp280.h.

typedef unsigned short int u16

used for unsigned 16bit

Definition at line 283 of file bmp280.h.

typedef unsigned int u32

used for unsigned 32bit

Definition at line 284 of file bmp280.h.

typedef unsigned long long int u64

used for unsigned 64bit

Definition at line 285 of file bmp280.h.

typedef unsigned char u8

used for unsigned 8bit

Definition at line 282 of file bmp280.h.

Function Documentation

double bmp280_compensate_pressure_double ( s32  v_uncomp_pressure_s32)

Reads actual pressure from uncompensated pressure and returns pressure in Pa as double.

Note
Output value of "96386.2" equals 96386.2 Pa = 963.862 hPa.
Parameters
v_uncomp_pressure_s32: value of uncompensated pressure
Returns
Actual pressure in floating point

Definition at line 1381 of file bmp280.c.

References bmp280_t::calib_param, bmp280_calib_param_t::dig_P1, bmp280_calib_param_t::dig_P2, bmp280_calib_param_t::dig_P3, bmp280_calib_param_t::dig_P4, bmp280_calib_param_t::dig_P5, bmp280_calib_param_t::dig_P6, bmp280_calib_param_t::dig_P7, bmp280_calib_param_t::dig_P8, bmp280_calib_param_t::dig_P9, and bmp280_calib_param_t::t_fine.

u32 bmp280_compensate_pressure_int32 ( s32  v_uncomp_pressure_s32)

Reads actual pressure from uncompensated pressure and returns the value in Pascal(Pa)

Note
Output value of "96386" equals 96386 Pa = 963.86 hPa = 963.86 millibar
Parameters
v_uncomp_pressure_s32value of uncompensated pressure
Returns
Returns the Actual pressure out put as s32

Definition at line 280 of file bmp280.c.

References bmp280_t::calib_param, bmp280_calib_param_t::dig_P1, bmp280_calib_param_t::dig_P2, bmp280_calib_param_t::dig_P3, bmp280_calib_param_t::dig_P4, bmp280_calib_param_t::dig_P5, bmp280_calib_param_t::dig_P6, bmp280_calib_param_t::dig_P7, bmp280_calib_param_t::dig_P8, bmp280_calib_param_t::dig_P9, and bmp280_calib_param_t::t_fine.

Referenced by bmp280_read_pressure_temperature().

u32 bmp280_compensate_pressure_int64 ( s32  v_uncomp_pressure_s32)

This API used to read actual pressure from uncompensated pressure.

Note
returns the value in Pa as unsigned 32 bit integer in Q24.8 format (24 integer bits and 8 fractional bits). Output value of "24674867" represents 24674867 / 256 = 96386.2 Pa = 963.862 hPa
Parameters
v_uncomp_pressure_s32: value of uncompensated pressure
Returns
actual pressure as 64bit output

Definition at line 1432 of file bmp280.c.

References bmp280_t::calib_param, bmp280_calib_param_t::dig_P1, bmp280_calib_param_t::dig_P2, bmp280_calib_param_t::dig_P3, bmp280_calib_param_t::dig_P4, bmp280_calib_param_t::dig_P5, bmp280_calib_param_t::dig_P6, bmp280_calib_param_t::dig_P7, bmp280_calib_param_t::dig_P8, bmp280_calib_param_t::dig_P9, and bmp280_calib_param_t::t_fine.

Referenced by BMP_getPressure().

double bmp280_compensate_temperature_double ( s32  v_uncomp_temperature_s32)

This API used to read actual temperature from uncompensated temperature.

Note
Returns the value in Degree centigrade
Output value of "51.23" equals 51.23 DegC.
Parameters
v_uncomp_temperature_s32: value of uncompensated temperature
Returns
Actual temperature in floating point

Definition at line 1343 of file bmp280.c.

References bmp280_t::calib_param, bmp280_calib_param_t::dig_T1, bmp280_calib_param_t::dig_T2, bmp280_calib_param_t::dig_T3, and bmp280_calib_param_t::t_fine.

s32 bmp280_compensate_temperature_int32 ( s32  v_uncomp_temperature_s32)

Reads actual temperature from uncompensated temperature.

Note
Returns the value in 0.01 degree Centigrade
Output value of "5123" equals 51.23 DegC.
Parameters
v_uncomp_temperature_s32: value of uncompensated temperature
Returns
Actual temperature output as s32

Definition at line 185 of file bmp280.c.

References bmp280_t::calib_param, bmp280_calib_param_t::dig_T1, bmp280_calib_param_t::dig_T2, bmp280_calib_param_t::dig_T3, and bmp280_calib_param_t::t_fine.

Referenced by bmp280_read_pressure_temperature(), BMP_getPressure(), and BMP_getTemperature().

BMP280_RETURN_FUNCTION_TYPE bmp280_compute_wait_time ( u8 v_delaytime_u8r)

Computing waiting time for sensor data read.

Parameters
v_delaytime_u8rThe value of delay time
Returns
0

Definition at line 1495 of file bmp280.c.

References bmp280_t::oversamp_pressure, and bmp280_t::oversamp_temperature.

Referenced by bmp280_get_forced_uncomp_pressure_temperature().

BMP280_RETURN_FUNCTION_TYPE bmp280_get_calib_param ( void  )

This API is used to calibration parameters used for calculation in the registers.

parameter Register address bit
dig_T1 0x88 and 0x89 from 0 : 7 to 8: 15
dig_T2 0x8A and 0x8B from 0 : 7 to 8: 15
dig_T3 0x8C and 0x8D from 0 : 7 to 8: 15
dig_P1 0x8E and 0x8F from 0 : 7 to 8: 15
dig_P2 0x90 and 0x91 from 0 : 7 to 8: 15
dig_P3 0x92 and 0x93 from 0 : 7 to 8: 15
dig_P4 0x94 and 0x95 from 0 : 7 to 8: 15
dig_P5 0x96 and 0x97 from 0 : 7 to 8: 15
dig_P6 0x98 and 0x99 from 0 : 7 to 8: 15
dig_P7 0x9A and 0x9B from 0 : 7 to 8: 15
dig_P8 0x9C and 0x9D from 0 : 7 to 8: 15
dig_P9 0x9E and 0x9F from 0 : 7 to 8: 15
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 473 of file bmp280.c.

References bmp280_t::calib_param, bmp280_t::dev_addr, bmp280_calib_param_t::dig_P1, bmp280_calib_param_t::dig_P2, bmp280_calib_param_t::dig_P3, bmp280_calib_param_t::dig_P4, bmp280_calib_param_t::dig_P5, bmp280_calib_param_t::dig_P6, bmp280_calib_param_t::dig_P7, bmp280_calib_param_t::dig_P8, bmp280_calib_param_t::dig_P9, bmp280_calib_param_t::dig_T1, bmp280_calib_param_t::dig_T2, and bmp280_calib_param_t::dig_T3.

Referenced by bmp280_init().

BMP280_RETURN_FUNCTION_TYPE bmp280_get_filter ( u8 v_value_u8)

This API is used to reads filter setting in the register 0xF5 bit 3 and 4.

Parameters
v_value_u8: The value of filter coefficient
value Filter coefficient
0x00 BMP280_FILTER_COEFF_OFF
0x01 BMP280_FILTER_COEFF_2
0x02 BMP280_FILTER_COEFF_4
0x03 BMP280_FILTER_COEFF_8
0x04 BMP280_FILTER_COEFF_16
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 971 of file bmp280.c.

References bmp280_t::dev_addr.

BMP280_RETURN_FUNCTION_TYPE bmp280_get_forced_uncomp_pressure_temperature ( s32 v_uncomp_pressure_s32,
s32 v_uncomp_temperature_s32 
)

This API used to read both uncompensated pressure and temperature in forced mode.

Parameters
v_uncomp_pressure_s32The value of uncompensated pressure.
v_uncomp_temperature_s32The value of uncompensated temperature
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 1236 of file bmp280.c.

References bmp280_compute_wait_time(), bmp280_read_uncomp_pressure_temperature(), bmp280_t::delay_msec, bmp280_t::dev_addr, bmp280_t::oversamp_pressure, and bmp280_t::oversamp_temperature.

Referenced by BMP_getPressure(), and BMP_getTemperature().

BMP280_RETURN_FUNCTION_TYPE bmp280_get_oversamp_pressure ( u8 v_value_u8)

This API is used to get the pressure oversampling setting in the register 0xF4 bits from 2 to 4.

value Pressure oversampling
0x00 BMP280_OVERSAMP_SKIPPED
0x01 BMP280_OVERSAMP_1X
0x02 BMP280_OVERSAMP_2X
0x03 BMP280_OVERSAMP_4X
0x04 BMP280_OVERSAMP_8X
0x05,0x06 and 0x07 BMP280_OVERSAMP_16X
Parameters
v_value_u8: The value of pressure over sampling
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 680 of file bmp280.c.

References bmp280_t::dev_addr, and bmp280_t::oversamp_pressure.

BMP280_RETURN_FUNCTION_TYPE bmp280_get_oversamp_temperature ( u8 v_value_u8)

This API is used to get the temperature oversampling setting in the register 0xF4 bits from 5 to 7.

value Temperature oversampling
0x00 BMP280_OVERSAMP_SKIPPED
0x01 BMP280_OVERSAMP_1X
0x02 BMP280_OVERSAMP_2X
0x03 BMP280_OVERSAMP_4X
0x04 BMP280_OVERSAMP_8X
0x05,0x06 and 0x07 BMP280_OVERSAMP_16X
Parameters
v_value_u8:The value of temperature over sampling
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 583 of file bmp280.c.

References bmp280_t::dev_addr, and bmp280_t::oversamp_temperature.

BMP280_RETURN_FUNCTION_TYPE bmp280_get_power_mode ( u8 v_power_mode_u8)

This API used to get the Operational Mode from the sensor in the register 0xF4 bit 0 and 1.

Parameters
v_power_mode_u8: The value of power mode value
value Power mode
0x00 BMP280_SLEEP_MODE
0x01 and 0x02 BMP280_FORCED_MODE
0x03 BMP280_NORMAL_MODE
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 772 of file bmp280.c.

References bmp280_t::dev_addr.

BMP280_RETURN_FUNCTION_TYPE bmp280_get_spi3 ( u8 v_enable_disable_u8)

This API used to get the sensor SPI mode(communication type) in the register 0xF5 bit 0.

Parameters
v_enable_disable_u8: The spi3 enable or disable state
value Description
0 Disable
1 Enable
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 888 of file bmp280.c.

References bmp280_t::dev_addr.

BMP280_RETURN_FUNCTION_TYPE bmp280_get_standby_durn ( u8 v_standby_durn_u8)

This API used to Read the standby duration time from the sensor in the register 0xF5 bit 5 to 7.

Parameters
v_standby_durn_u8: The standby duration time value.
value standby duration
0x00 BMP280_STANDBYTIME_1_MS
0x01 BMP280_STANDBYTIME_63_MS
0x02 BMP280_STANDBYTIME_125_MS
0x03 BMP280_STANDBYTIME_250_MS
0x04 BMP280_STANDBYTIME_500_MS
0x05 BMP280_STANDBYTIME_1000_MS
0x06 BMP280_STANDBYTIME_2000_MS
0x07 BMP280_STANDBYTIME_4000_MS
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 1058 of file bmp280.c.

References bmp280_t::dev_addr.

BMP280_RETURN_FUNCTION_TYPE bmp280_init ( struct bmp280_t bmp280)

This function is used for initialize the bus read and bus write functions and assign the chip id and I2C address of the BMP280 sensor chip id is read in the register 0xD0 bit from 0 to 7.

Parameters
*bmp280structure pointer.
Note
While changing the parameter of the p_bmp280
consider the following point: Changing the reference value of the parameter will changes the local copy or local reference make sure your changes will not affect the reference value of the parameter (Better case don't change the reference value of the parameter)
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 85 of file bmp280.c.

References bmp280_get_calib_param(), bmp280_t::chip_id, bmp280_t::delay_msec, and bmp280_t::dev_addr.

Referenced by BMP_init().

BMP280_RETURN_FUNCTION_TYPE bmp280_read_pressure_temperature ( u32 v_pressure_u32,
s32 v_temperature_s32 
)

This API reads the true pressure and temperature.

Parameters
v_pressure_u32: The value of compensated pressure.
v_temperature_s32: The value of compensated temperature.
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 425 of file bmp280.c.

References bmp280_compensate_pressure_int32(), bmp280_compensate_temperature_int32(), and bmp280_read_uncomp_pressure_temperature().

BMP280_RETURN_FUNCTION_TYPE bmp280_read_register ( u8  v_addr_u8,
u8 v_data_u8,
u8  v_len_u8 
)

This API reads the data from the given register.

Parameters
v_addr_u8-> Address of the register
v_data_u8-> The data from the register
v_len_u8-> no of bytes to read
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 1312 of file bmp280.c.

References bmp280_t::dev_addr.

BMP280_RETURN_FUNCTION_TYPE bmp280_read_uncomp_pressure ( s32 v_uncomp_pressure_s32)

This API is used to read uncompensated pressure. in the registers 0xF7, 0xF8 and 0xF9.

Note
0xF7 -> MSB -> bit from 0 to 7
0xF8 -> LSB -> bit from 0 to 7
0xF9 -> LSB -> bit from 4 to 7
Parameters
v_uncomp_pressure_s32: The value of uncompensated pressure
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 235 of file bmp280.c.

References bmp280_t::dev_addr.

Referenced by BMP_getPressure().

BMP280_RETURN_FUNCTION_TYPE bmp280_read_uncomp_pressure_temperature ( s32 v_uncomp_pressure_s32,
s32 v_uncomp_temperature_s32 
)

reads uncompensated pressure and temperature

Parameters
v_uncomp_pressure_s32The value of uncompensated pressure.
v_uncomp_temperature_s32The value of uncompensated temperature.
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 364 of file bmp280.c.

References bmp280_t::dev_addr.

Referenced by bmp280_get_forced_uncomp_pressure_temperature(), and bmp280_read_pressure_temperature().

BMP280_RETURN_FUNCTION_TYPE bmp280_read_uncomp_temperature ( s32 v_uncomp_temperature_s32)

This API is used to read uncompensated temperature in the registers 0xFA, 0xFB and 0xFC.

Note
0xFA -> MSB -> bit from 0 to 7
0xFB -> LSB -> bit from 0 to 7
0xFC -> LSB -> bit from 4 to 7
Parameters
v_uncomp_temperature_s32: The uncompensated temperature.
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 139 of file bmp280.c.

References bmp280_t::dev_addr.

Referenced by BMP_getPressure(), and BMP_getTemperature().

BMP280_RETURN_FUNCTION_TYPE bmp280_set_filter ( u8  v_value_u8)

This API is used to write filter setting in the register 0xF5 bit 3 and 4.

Parameters
v_value_u8: The value of filter coefficient
value Filter coefficient
0x00 BMP280_FILTER_COEFF_OFF
0x01 BMP280_FILTER_COEFF_2
0x02 BMP280_FILTER_COEFF_4
0x03 BMP280_FILTER_COEFF_8
0x04 BMP280_FILTER_COEFF_16
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 1010 of file bmp280.c.

References bmp280_t::dev_addr.

BMP280_RETURN_FUNCTION_TYPE bmp280_set_oversamp_pressure ( u8  v_value_u8)

This API is used to set the pressure oversampling setting in the register 0xF4 bits from 2 to 4.

value Pressure oversampling
0x00 BMP280_OVERSAMP_SKIPPED
0x01 BMP280_OVERSAMP_1X
0x02 BMP280_OVERSAMP_2X
0x03 BMP280_OVERSAMP_4X
0x04 BMP280_OVERSAMP_8X
0x05,0x06 and 0x07 BMP280_OVERSAMP_16X
Parameters
v_value_u8: The value of pressure over sampling
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 725 of file bmp280.c.

References bmp280_t::dev_addr, and bmp280_t::oversamp_pressure.

BMP280_RETURN_FUNCTION_TYPE bmp280_set_oversamp_temperature ( u8  v_value_u8)

This API is used to set the temperature oversampling setting in the register 0xF4 bits from 5 to 7.

value Temperature oversampling
0x00 BMP280_OVERSAMP_SKIPPED
0x01 BMP280_OVERSAMP_1X
0x02 BMP280_OVERSAMP_2X
0x03 BMP280_OVERSAMP_4X
0x04 BMP280_OVERSAMP_8X
0x05,0x06 and 0x07 BMP280_OVERSAMP_16X
Parameters
v_value_u8:The value of temperature over sampling
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 628 of file bmp280.c.

References bmp280_t::dev_addr, and bmp280_t::oversamp_temperature.

BMP280_RETURN_FUNCTION_TYPE bmp280_set_power_mode ( u8  v_power_mode_u8)

This API used to set the Operational Mode from the sensor in the register 0xF4 bit 0 and 1.

Parameters
v_power_mode_u8: The value of power mode value
value Power mode
0x00 BMP280_SLEEP_MODE
0x01 and 0x02 BMP280_FORCED_MODE
0x03 BMP280_NORMAL_MODE
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 809 of file bmp280.c.

References bmp280_t::dev_addr, bmp280_t::oversamp_pressure, and bmp280_t::oversamp_temperature.

Referenced by BMP_config(), BMP_deInit(), and BMP_init().

BMP280_RETURN_FUNCTION_TYPE bmp280_set_soft_rst ( void  )

Used to reset the sensor The value 0xB6 is written to the 0xE0 register the device is reset using the complete power-on-reset procedure. Soft reset can be easily set using bmp280_set_softreset().

Note
Usage Hint : bmp280_set_softreset()
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 852 of file bmp280.c.

References bmp280_t::dev_addr.

BMP280_RETURN_FUNCTION_TYPE bmp280_set_spi3 ( u8  v_enable_disable_u8)

This API used to set the sensor SPI mode(communication type) in the register 0xF5 bit 0.

Parameters
v_enable_disable_u8: The spi3 enable or disable state
value Description
0 Disable
1 Enable
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 925 of file bmp280.c.

References bmp280_t::dev_addr.

BMP280_RETURN_FUNCTION_TYPE bmp280_set_standby_durn ( u8  v_standby_durn_u8)

This API used to Read the standby duration time from the sensor in the register 0xF5 bit 5 to 7.

Note
Normal mode comprises an automated perpetual cycling between an (active) Measurement period and an (inactive) standby period.
The standby time is determined by the contents of the register t_sb. Standby time can be set using BMP280_STANDBYTIME_125_MS.
bmp280_set_standby_durn(BMP280_STANDBYTIME_125_MS)
Parameters
v_standby_durn_u8: The standby duration time value.
value standby duration
0x00 BMP280_STANDBYTIME_1_MS
0x01 BMP280_STANDBYTIME_63_MS
0x02 BMP280_STANDBYTIME_125_MS
0x03 BMP280_STANDBYTIME_250_MS
0x04 BMP280_STANDBYTIME_500_MS
0x05 BMP280_STANDBYTIME_1000_MS
0x06 BMP280_STANDBYTIME_2000_MS
0x07 BMP280_STANDBYTIME_4000_MS
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 1111 of file bmp280.c.

References bmp280_t::dev_addr.

Referenced by BMP_config().

BMP280_RETURN_FUNCTION_TYPE bmp280_set_work_mode ( u8  v_work_mode_u8)

This API is used to write the working mode of the sensor.

Parameters
v_work_mode_u8: The value of work mode
value mode
0 BMP280_ULTRA_LOW_POWER_MODE
1 BMP280_LOW_POWER_MODE
2 BMP280_STANDARD_RESOLUTION_MODE
3 BMP280_HIGH_RESOLUTION_MODE
4 BMP280_ULTRA_HIGH_RESOLUTION_MODE
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 1157 of file bmp280.c.

References bmp280_t::dev_addr, bmp280_t::oversamp_pressure, and bmp280_t::oversamp_temperature.

Referenced by BMP_config(), and BMP_init().

BMP280_RETURN_FUNCTION_TYPE bmp280_write_register ( u8  v_addr_u8,
u8 v_data_u8,
u8  v_len_u8 
)

This API write the data to the given register.

Parameters
v_addr_u8-> Address of the register
v_data_u8-> The data from the register
v_len_u8-> no of bytes to read
Returns
results of bus communication function
Return values
0-> Success
-1-> Error

Definition at line 1281 of file bmp280.c.

References bmp280_t::dev_addr.