Internal addresses, registers, constants for the BMX280 family sensors. More...

Detailed Description

Internal addresses, registers, constants for the BMX280 family sensors.

Author: Kees Bakker kees@.nosp@m.soda.nosp@m.q.com; Alexandre Abadie alexa.nosp@m.ndre.nosp@m..abad.nosp@m.ie@i.nosp@m.nria..nosp@m.fr

Device specific chip ID
#define	BMX280_CHIP_ID_VAL (0x58)

BME280 registers
#define	BMX280_CHIP_ID_REG (0xD0)

#define	BMEX80_RST_REG (0xE0) /* Softreset Reg */

#define	BMX280_DIG_T1_LSB_REG (0x88)

#define	BMX280_DIG_T1_MSB_REG (0x89)

#define	BMX280_DIG_T2_LSB_REG (0x8A)

#define	BMX280_DIG_T2_MSB_REG (0x8B)

#define	BMX280_DIG_T3_LSB_REG (0x8C)

#define	BMX280_DIG_T3_MSB_REG (0x8D)

#define	BMX280_DIG_P1_LSB_REG (0x8E)

#define	BMX280_DIG_P1_MSB_REG (0x8F)

#define	BMX280_DIG_P2_LSB_REG (0x90)

#define	BMX280_DIG_P2_MSB_REG (0x91)

#define	BMX280_DIG_P3_LSB_REG (0x92)

#define	BMX280_DIG_P3_MSB_REG (0x93)

#define	BMX280_DIG_P4_LSB_REG (0x94)

#define	BMX280_DIG_P4_MSB_REG (0x95)

#define	BMX280_DIG_P5_LSB_REG (0x96)

#define	BMX280_DIG_P5_MSB_REG (0x97)

#define	BMX280_DIG_P6_LSB_REG (0x98)

#define	BMX280_DIG_P6_MSB_REG (0x99)

#define	BMX280_DIG_P7_LSB_REG (0x9A)

#define	BMX280_DIG_P7_MSB_REG (0x9B)

#define	BMX280_DIG_P8_LSB_REG (0x9C)

#define	BMX280_DIG_P8_MSB_REG (0x9D)

#define	BMX280_DIG_P9_LSB_REG (0x9E)

#define	BMX280_DIG_P9_MSB_REG (0x9F)

#define	BME280_DIG_H1_REG (0xA1)

#define	BME280_DIG_H2_LSB_REG (0xE1)

#define	BME280_DIG_H2_MSB_REG (0xE2)

#define	BME280_DIG_H3_REG (0xE3)

#define	BME280_DIG_H4_MSB_REG (0xE4) /* H4[11:4] */

#define	BME280_DIG_H4_H5_REG (0xE5) /* H5[3:0] H4[3:0] */

#define	BME280_DIG_H5_MSB_REG (0xE6) /* H5[11:4] */

#define	BME280_DIG_H6_REG (0xE7)

#define	BMX280_STAT_REG (0xF3) /* Status Reg */

#define	BMX280_CTRL_MEAS_REG (0xF4) /* Ctrl Measure Reg */

#define	BMX280_CONFIG_REG (0xF5) /* Configuration Reg */

#define	BMX280_PRESSURE_MSB_REG (0xF7) /* Pressure MSB */

#define	BMX280_PRESSURE_LSB_REG (0xF8) /* Pressure LSB */

#define	BMX280_PRESSURE_XLSB_REG (0xF9) /* Pressure XLSB */

#define	BMX280_TEMPERATURE_MSB_REG (0xFA) /* Temperature MSB */

#define	BMX280_TEMPERATURE_LSB_REG (0xFB) /* Temperature LSB */

#define	BMX280_TEMPERATURE_XLSB_REG (0xFC) /* Temperature XLSB */

#define	BME280_CTRL_HUM_REG (0xF2) /* Ctrl Humidity Reg */

#define	BME280_HUMIDITY_MSB_REG (0xFD) /* Humidity MSB */

#define	BME280_HUMIDITY_LSB_REG (0xFE) /* Humidity LSB */

Bitmasks for selected registers
#define	MEAS_OSRS_T_POS (5U)

#define	MEAS_OSRS_P_POS (2U)

#define	STAT_MEASURING (1 << 3)

#define	RESET_WORD (0xB6)

The base address for the row of data registers
#define	DATA_BASE BMX280_PRESSURE_MSB_REG

Calibration data base addresses, block sizes, and offsets
#define	CALIB_T_P_BASE (BMX280_DIG_T1_LSB_REG)

#define	CALIB_T_P_LEN (24U)

#define	OFFSET_T_P(x) (x - CALIB_T_P_BASE)

Detailed Description

Device specific chip ID

BME280 registers

Bitmasks for selected registers

The base address for the row of data registers

Calibration data base addresses, block sizes, and offsets