/** * Copyright (C) 2017 - 2018 Bosch Sensortec GmbH * * 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. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 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 * * The information provided is believed to be accurate and reliable. * The copyright holder assumes no responsibility * for the consequences of use * of such information nor for any infringement of patents or * other rights of third parties which may result from its use. * No license is granted by implication or otherwise under any patent or * patent rights of the copyright holder. * * @file bme680_defs.h * @date 19 Jun 2018 * @version 3.5.9 * @brief * */ /*! @file bme680_defs.h @brief Sensor driver for BME680 sensor */ /*! * @defgroup BME680 SENSOR API * @brief * @{*/ #ifndef BME680_DEFS_H_ #define BME680_DEFS_H_ /********************************************************/ /* header includes */ #ifdef __KERNEL__ #include #include #else #include #include #endif /******************************************************************************/ /*! @name Common macros */ /******************************************************************************/ #if !defined(UINT8_C) && !defined(INT8_C) #define INT8_C(x) S8_C(x) #define UINT8_C(x) U8_C(x) #endif #if !defined(UINT16_C) && !defined(INT16_C) #define INT16_C(x) S16_C(x) #define UINT16_C(x) U16_C(x) #endif #if !defined(INT32_C) && !defined(UINT32_C) #define INT32_C(x) S32_C(x) #define UINT32_C(x) U32_C(x) #endif #if !defined(INT64_C) && !defined(UINT64_C) #define INT64_C(x) S64_C(x) #define UINT64_C(x) U64_C(x) #endif /**@}*/ /**\name C standard macros */ #ifndef NULL #ifdef __cplusplus #define NULL 0 #else #define NULL ((void *) 0) #endif #endif /** BME680 configuration macros */ /** Enable or un-comment the macro to provide floating point data output */ #ifndef BME680_FLOAT_POINT_COMPENSATION //#define BME680_FLOAT_POINT_COMPENSATION #endif /** BME680 General config */ #define BME680_POLL_PERIOD_MS UINT8_C(10) /** BME680 I2C addresses */ #define BME680_I2C_ADDR_PRIMARY UINT8_C(0x76) #define BME680_I2C_ADDR_SECONDARY UINT8_C(0x77) /** BME680 unique chip identifier */ #define BME680_CHIP_ID UINT8_C(0x61) /** BME680 coefficients related defines */ #define BME680_COEFF_SIZE UINT8_C(41) #define BME680_COEFF_ADDR1_LEN UINT8_C(25) #define BME680_COEFF_ADDR2_LEN UINT8_C(16) /** BME680 field_x related defines */ #define BME680_FIELD_LENGTH UINT8_C(15) #define BME680_FIELD_ADDR_OFFSET UINT8_C(17) /** Soft reset command */ #define BME680_SOFT_RESET_CMD UINT8_C(0xb6) /** Error code definitions */ #define BME680_OK INT8_C(0) /* Errors */ #define BME680_E_NULL_PTR INT8_C(-1) #define BME680_E_COM_FAIL INT8_C(-2) #define BME680_E_DEV_NOT_FOUND INT8_C(-3) #define BME680_E_INVALID_LENGTH INT8_C(-4) /* Warnings */ #define BME680_W_DEFINE_PWR_MODE INT8_C(1) #define BME680_W_NO_NEW_DATA INT8_C(2) /* Info's */ #define BME680_I_MIN_CORRECTION UINT8_C(1) #define BME680_I_MAX_CORRECTION UINT8_C(2) /** Register map */ /** Other coefficient's address */ #define BME680_ADDR_RES_HEAT_VAL_ADDR UINT8_C(0x00) #define BME680_ADDR_RES_HEAT_RANGE_ADDR UINT8_C(0x02) #define BME680_ADDR_RANGE_SW_ERR_ADDR UINT8_C(0x04) #define BME680_ADDR_SENS_CONF_START UINT8_C(0x5A) #define BME680_ADDR_GAS_CONF_START UINT8_C(0x64) /** Field settings */ #define BME680_FIELD0_ADDR UINT8_C(0x1d) /** Heater settings */ #define BME680_RES_HEAT0_ADDR UINT8_C(0x5a) #define BME680_GAS_WAIT0_ADDR UINT8_C(0x64) /** Sensor configuration registers */ #define BME680_CONF_HEAT_CTRL_ADDR UINT8_C(0x70) #define BME680_CONF_ODR_RUN_GAS_NBC_ADDR UINT8_C(0x71) #define BME680_CONF_OS_H_ADDR UINT8_C(0x72) #define BME680_MEM_PAGE_ADDR UINT8_C(0xf3) #define BME680_CONF_T_P_MODE_ADDR UINT8_C(0x74) #define BME680_CONF_ODR_FILT_ADDR UINT8_C(0x75) /** Coefficient's address */ #define BME680_COEFF_ADDR1 UINT8_C(0x89) #define BME680_COEFF_ADDR2 UINT8_C(0xe1) /** Chip identifier */ #define BME680_CHIP_ID_ADDR UINT8_C(0xd0) /** Soft reset register */ #define BME680_SOFT_RESET_ADDR UINT8_C(0xe0) /** Heater control settings */ #define BME680_ENABLE_HEATER UINT8_C(0x00) #define BME680_DISABLE_HEATER UINT8_C(0x08) /** Gas measurement settings */ #define BME680_DISABLE_GAS_MEAS UINT8_C(0x00) #define BME680_ENABLE_GAS_MEAS UINT8_C(0x01) /** Over-sampling settings */ #define BME680_OS_NONE UINT8_C(0) #define BME680_OS_1X UINT8_C(1) #define BME680_OS_2X UINT8_C(2) #define BME680_OS_4X UINT8_C(3) #define BME680_OS_8X UINT8_C(4) #define BME680_OS_16X UINT8_C(5) /** IIR filter settings */ #define BME680_FILTER_SIZE_0 UINT8_C(0) #define BME680_FILTER_SIZE_1 UINT8_C(1) #define BME680_FILTER_SIZE_3 UINT8_C(2) #define BME680_FILTER_SIZE_7 UINT8_C(3) #define BME680_FILTER_SIZE_15 UINT8_C(4) #define BME680_FILTER_SIZE_31 UINT8_C(5) #define BME680_FILTER_SIZE_63 UINT8_C(6) #define BME680_FILTER_SIZE_127 UINT8_C(7) /** Power mode settings */ #define BME680_SLEEP_MODE UINT8_C(0) #define BME680_FORCED_MODE UINT8_C(1) /** Delay related macro declaration */ #define BME680_RESET_PERIOD UINT32_C(10) /** SPI memory page settings */ #define BME680_MEM_PAGE0 UINT8_C(0x10) #define BME680_MEM_PAGE1 UINT8_C(0x00) /** Ambient humidity shift value for compensation */ #define BME680_HUM_REG_SHIFT_VAL UINT8_C(4) /** Run gas enable and disable settings */ #define BME680_RUN_GAS_DISABLE UINT8_C(0) #define BME680_RUN_GAS_ENABLE UINT8_C(1) /** Buffer length macro declaration */ #define BME680_TMP_BUFFER_LENGTH UINT8_C(40) #define BME680_REG_BUFFER_LENGTH UINT8_C(6) #define BME680_FIELD_DATA_LENGTH UINT8_C(3) #define BME680_GAS_REG_BUF_LENGTH UINT8_C(20) /** Settings selector */ #define BME680_OST_SEL UINT16_C(1) #define BME680_OSP_SEL UINT16_C(2) #define BME680_OSH_SEL UINT16_C(4) #define BME680_GAS_MEAS_SEL UINT16_C(8) #define BME680_FILTER_SEL UINT16_C(16) #define BME680_HCNTRL_SEL UINT16_C(32) #define BME680_RUN_GAS_SEL UINT16_C(64) #define BME680_NBCONV_SEL UINT16_C(128) #define BME680_GAS_SENSOR_SEL (BME680_GAS_MEAS_SEL | BME680_RUN_GAS_SEL | BME680_NBCONV_SEL) /** Number of conversion settings*/ #define BME680_NBCONV_MIN UINT8_C(0) #define BME680_NBCONV_MAX UINT8_C(10) /** Mask definitions */ #define BME680_GAS_MEAS_MSK UINT8_C(0x30) #define BME680_NBCONV_MSK UINT8_C(0X0F) #define BME680_FILTER_MSK UINT8_C(0X1C) #define BME680_OST_MSK UINT8_C(0XE0) #define BME680_OSP_MSK UINT8_C(0X1C) #define BME680_OSH_MSK UINT8_C(0X07) #define BME680_HCTRL_MSK UINT8_C(0x08) #define BME680_RUN_GAS_MSK UINT8_C(0x10) #define BME680_MODE_MSK UINT8_C(0x03) #define BME680_RHRANGE_MSK UINT8_C(0x30) #define BME680_RSERROR_MSK UINT8_C(0xf0) #define BME680_NEW_DATA_MSK UINT8_C(0x80) #define BME680_GAS_INDEX_MSK UINT8_C(0x0f) #define BME680_GAS_RANGE_MSK UINT8_C(0x0f) #define BME680_GASM_VALID_MSK UINT8_C(0x20) #define BME680_HEAT_STAB_MSK UINT8_C(0x10) #define BME680_MEM_PAGE_MSK UINT8_C(0x10) #define BME680_SPI_RD_MSK UINT8_C(0x80) #define BME680_SPI_WR_MSK UINT8_C(0x7f) #define BME680_BIT_H1_DATA_MSK UINT8_C(0x0F) /** Bit position definitions for sensor settings */ #define BME680_GAS_MEAS_POS UINT8_C(4) #define BME680_FILTER_POS UINT8_C(2) #define BME680_OST_POS UINT8_C(5) #define BME680_OSP_POS UINT8_C(2) #define BME680_RUN_GAS_POS UINT8_C(4) /** Array Index to Field data mapping for Calibration Data*/ #define BME680_T2_LSB_REG (1) #define BME680_T2_MSB_REG (2) #define BME680_T3_REG (3) #define BME680_P1_LSB_REG (5) #define BME680_P1_MSB_REG (6) #define BME680_P2_LSB_REG (7) #define BME680_P2_MSB_REG (8) #define BME680_P3_REG (9) #define BME680_P4_LSB_REG (11) #define BME680_P4_MSB_REG (12) #define BME680_P5_LSB_REG (13) #define BME680_P5_MSB_REG (14) #define BME680_P7_REG (15) #define BME680_P6_REG (16) #define BME680_P8_LSB_REG (19) #define BME680_P8_MSB_REG (20) #define BME680_P9_LSB_REG (21) #define BME680_P9_MSB_REG (22) #define BME680_P10_REG (23) #define BME680_H2_MSB_REG (25) #define BME680_H2_LSB_REG (26) #define BME680_H1_LSB_REG (26) #define BME680_H1_MSB_REG (27) #define BME680_H3_REG (28) #define BME680_H4_REG (29) #define BME680_H5_REG (30) #define BME680_H6_REG (31) #define BME680_H7_REG (32) #define BME680_T1_LSB_REG (33) #define BME680_T1_MSB_REG (34) #define BME680_GH2_LSB_REG (35) #define BME680_GH2_MSB_REG (36) #define BME680_GH1_REG (37) #define BME680_GH3_REG (38) /** BME680 register buffer index settings*/ #define BME680_REG_FILTER_INDEX UINT8_C(5) #define BME680_REG_TEMP_INDEX UINT8_C(4) #define BME680_REG_PRES_INDEX UINT8_C(4) #define BME680_REG_HUM_INDEX UINT8_C(2) #define BME680_REG_NBCONV_INDEX UINT8_C(1) #define BME680_REG_RUN_GAS_INDEX UINT8_C(1) #define BME680_REG_HCTRL_INDEX UINT8_C(0) /** BME680 pressure calculation macros */ /*! This max value is used to provide precedence to multiplication or division * in pressure compensation equation to achieve least loss of precision and * avoiding overflows. * i.e Comparing value, BME680_MAX_OVERFLOW_VAL = INT32_C(1 << 30) */ #define BME680_MAX_OVERFLOW_VAL INT32_C(0x40000000) /** Macro to combine two 8 bit data's to form a 16 bit data */ #define BME680_CONCAT_BYTES(msb, lsb) (((uint16_t)msb << 8) | (uint16_t)lsb) /** Macro to SET and GET BITS of a register */ #define BME680_SET_BITS(reg_data, bitname, data) \ ((reg_data & ~(bitname##_MSK)) | \ ((data << bitname##_POS) & bitname##_MSK)) #define BME680_GET_BITS(reg_data, bitname) ((reg_data & (bitname##_MSK)) >> \ (bitname##_POS)) /** Macro variant to handle the bitname position if it is zero */ #define BME680_SET_BITS_POS_0(reg_data, bitname, data) \ ((reg_data & ~(bitname##_MSK)) | \ (data & bitname##_MSK)) #define BME680_GET_BITS_POS_0(reg_data, bitname) (reg_data & (bitname##_MSK)) /** Type definitions */ /*! * Generic communication function pointer * @param[in] dev_id: Place holder to store the id of the device structure * Can be used to store the index of the Chip select or * I2C address of the device. * @param[in] reg_addr: Used to select the register the where data needs to * be read from or written to. * @param[in/out] reg_data: Data array to read/write * @param[in] len: Length of the data array */ typedef int8_t (*bme680_com_fptr_t)(uint8_t dev_id, uint8_t reg_addr, uint8_t *data, uint16_t len); /*! * Delay function pointer * @param[in] period: Time period in milliseconds */ typedef void (*bme680_delay_fptr_t)(uint32_t period); /*! * @brief Interface selection Enumerations */ enum bme680_intf { /*! SPI interface */ BME680_SPI_INTF, /*! I2C interface */ BME680_I2C_INTF }; /* structure definitions */ /*! * @brief Sensor field data structure */ struct bme680_field_data { /*! Contains new_data, gasm_valid & heat_stab */ uint8_t status; /*! The index of the heater profile used */ uint8_t gas_index; /*! Measurement index to track order */ uint8_t meas_index; #ifndef BME680_FLOAT_POINT_COMPENSATION /*! Temperature in degree celsius x100 */ int16_t temperature; /*! Pressure in Pascal */ uint32_t pressure; /*! Humidity in % relative humidity x1000 */ uint32_t humidity; /*! Gas resistance in Ohms */ uint32_t gas_resistance; #else /*! Temperature in degree celsius */ float temperature; /*! Pressure in Pascal */ float pressure; /*! Humidity in % relative humidity x1000 */ float humidity; /*! Gas resistance in Ohms */ float gas_resistance; #endif }; /*! * @brief Structure to hold the Calibration data */ struct bme680_calib_data { /*! Variable to store calibrated humidity data */ uint16_t par_h1; /*! Variable to store calibrated humidity data */ uint16_t par_h2; /*! Variable to store calibrated humidity data */ int8_t par_h3; /*! Variable to store calibrated humidity data */ int8_t par_h4; /*! Variable to store calibrated humidity data */ int8_t par_h5; /*! Variable to store calibrated humidity data */ uint8_t par_h6; /*! Variable to store calibrated humidity data */ int8_t par_h7; /*! Variable to store calibrated gas data */ int8_t par_gh1; /*! Variable to store calibrated gas data */ int16_t par_gh2; /*! Variable to store calibrated gas data */ int8_t par_gh3; /*! Variable to store calibrated temperature data */ uint16_t par_t1; /*! Variable to store calibrated temperature data */ int16_t par_t2; /*! Variable to store calibrated temperature data */ int8_t par_t3; /*! Variable to store calibrated pressure data */ uint16_t par_p1; /*! Variable to store calibrated pressure data */ int16_t par_p2; /*! Variable to store calibrated pressure data */ int8_t par_p3; /*! Variable to store calibrated pressure data */ int16_t par_p4; /*! Variable to store calibrated pressure data */ int16_t par_p5; /*! Variable to store calibrated pressure data */ int8_t par_p6; /*! Variable to store calibrated pressure data */ int8_t par_p7; /*! Variable to store calibrated pressure data */ int16_t par_p8; /*! Variable to store calibrated pressure data */ int16_t par_p9; /*! Variable to store calibrated pressure data */ uint8_t par_p10; #ifndef BME680_FLOAT_POINT_COMPENSATION /*! Variable to store t_fine size */ int32_t t_fine; #else /*! Variable to store t_fine size */ float t_fine; #endif /*! Variable to store heater resistance range */ uint8_t res_heat_range; /*! Variable to store heater resistance value */ int8_t res_heat_val; /*! Variable to store error range */ int8_t range_sw_err; }; /*! * @brief BME680 sensor settings structure which comprises of ODR, * over-sampling and filter settings. */ struct bme680_tph_sett { /*! Humidity oversampling */ uint8_t os_hum; /*! Temperature oversampling */ uint8_t os_temp; /*! Pressure oversampling */ uint8_t os_pres; /*! Filter coefficient */ uint8_t filter; }; /*! * @brief BME680 gas sensor which comprises of gas settings * and status parameters */ struct bme680_gas_sett { /*! Variable to store nb conversion */ uint8_t nb_conv; /*! Variable to store heater control */ uint8_t heatr_ctrl; /*! Run gas enable value */ uint8_t run_gas; /*! Heater temperature value */ uint16_t heatr_temp; /*! Duration profile value */ uint16_t heatr_dur; }; /*! * @brief BME680 device structure */ struct bme680_dev { /*! Chip Id */ uint8_t chip_id; /*! Device Id */ uint8_t dev_id; /*! SPI/I2C interface */ enum bme680_intf intf; /*! Memory page used */ uint8_t mem_page; /*! Ambient temperature in Degree C */ int8_t amb_temp; /*! Sensor calibration data */ struct bme680_calib_data calib; /*! Sensor settings */ struct bme680_tph_sett tph_sett; /*! Gas Sensor settings */ struct bme680_gas_sett gas_sett; /*! Sensor power modes */ uint8_t power_mode; /*! New sensor fields */ uint8_t new_fields; /*! Store the info messages */ uint8_t info_msg; /*! Bus read function pointer */ bme680_com_fptr_t read; /*! Bus write function pointer */ bme680_com_fptr_t write; /*! delay function pointer */ bme680_delay_fptr_t delay_ms; /*! Communication function result */ int8_t com_rslt; }; #endif /* BME680_DEFS_H_ */ /** @}*/ /** @}*/