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512 lines
15 KiB
512 lines
15 KiB
/**
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* Copyright (C) 2017 - 2018 Bosch Sensortec GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* Neither the name of the copyright holder nor the names of the
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
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* OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
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*
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* The information provided is believed to be accurate and reliable.
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* The copyright holder assumes no responsibility
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* for the consequences of use
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* of such information nor for any infringement of patents or
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* other rights of third parties which may result from its use.
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* No license is granted by implication or otherwise under any patent or
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* patent rights of the copyright holder.
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*
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* @file bme680_defs.h
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* @date 30 Oct 2017
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* @version 3.5.3
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* @brief
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*
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*/
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/*! @file bme680_defs.h
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@brief Sensor driver for BME680 sensor */
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/*!
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* @defgroup BME680 SENSOR API
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* @brief
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* @{*/
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#ifndef BME680_DEFS_H_
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#define BME680_DEFS_H_
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/********************************************************/
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/* header includes */
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#ifdef __KERNEL__
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#include <linux/types.h>
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#include <linux/kernel.h>
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#else
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#include <stdint.h>
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#include <stddef.h>
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#endif
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/******************************************************************************/
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/*! @name Common macros */
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/******************************************************************************/
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#if !defined(UINT8_C) && !defined(INT8_C)
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#define INT8_C(x) S8_C(x)
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#define UINT8_C(x) U8_C(x)
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#endif
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#if !defined(UINT16_C) && !defined(INT16_C)
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#define INT16_C(x) S16_C(x)
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#define UINT16_C(x) U16_C(x)
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#endif
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#if !defined(INT32_C) && !defined(UINT32_C)
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#define INT32_C(x) S32_C(x)
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#define UINT32_C(x) U32_C(x)
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#endif
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#if !defined(INT64_C) && !defined(UINT64_C)
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#define INT64_C(x) S64_C(x)
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#define UINT64_C(x) U64_C(x)
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#endif
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/**@}*/
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/**\name C standard macros */
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#ifndef NULL
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#ifdef __cplusplus
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#define NULL 0
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#else
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#define NULL ((void *) 0)
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#endif
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#endif
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/** BME680 General config */
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#define BME680_POLL_PERIOD_MS UINT8_C(10)
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/** BME680 I2C addresses */
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#define BME680_I2C_ADDR_PRIMARY UINT8_C(0x76)
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#define BME680_I2C_ADDR_SECONDARY UINT8_C(0x77)
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/** BME680 unique chip identifier */
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#define BME680_CHIP_ID UINT8_C(0x61)
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/** BME680 coefficients related defines */
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#define BME680_COEFF_SIZE UINT8_C(0x41)
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#define BME680_COEFF_ADDR1_LEN UINT8_C(25)
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#define BME680_COEFF_ADDR2_LEN UINT8_C(16)
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/** BME680 field_x related defines */
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#define BME680_FIELD_LENGTH UINT8_C(15)
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#define BME680_FIELD_ADDR_OFFSET UINT8_C(17)
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/** Soft reset command */
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#define BME680_SOFT_RESET_CMD UINT8_C(0xb6)
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/** Error code definitions */
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#define BME680_OK INT8_C(0)
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/* Errors */
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#define BME680_E_NULL_PTR INT8_C(-1)
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#define BME680_E_COM_FAIL INT8_C(-2)
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#define BME680_E_DEV_NOT_FOUND INT8_C(-3)
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#define BME680_E_INVALID_LENGTH INT8_C(-4)
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/* Warnings */
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#define BME680_W_DEFINE_PWR_MODE INT8_C(1)
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#define BME680_W_NO_NEW_DATA INT8_C(2)
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/* Info's */
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#define BME680_I_MIN_CORRECTION UINT8_C(1)
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#define BME680_I_MAX_CORRECTION UINT8_C(2)
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/** Register map */
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/** Other coefficient's address */
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#define BME680_ADDR_RES_HEAT_VAL_ADDR UINT8_C(0x00)
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#define BME680_ADDR_RES_HEAT_RANGE_ADDR UINT8_C(0x02)
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#define BME680_ADDR_RANGE_SW_ERR_ADDR UINT8_C(0x04)
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#define BME680_ADDR_SENS_CONF_START UINT8_C(0x5A)
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#define BME680_ADDR_GAS_CONF_START UINT8_C(0x64)
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/** Field settings */
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#define BME680_FIELD0_ADDR UINT8_C(0x1d)
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/** Heater settings */
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#define BME680_RES_HEAT0_ADDR UINT8_C(0x5a)
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#define BME680_GAS_WAIT0_ADDR UINT8_C(0x64)
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/** Sensor configuration registers */
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#define BME680_CONF_HEAT_CTRL_ADDR UINT8_C(0x70)
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#define BME680_CONF_ODR_RUN_GAS_NBC_ADDR UINT8_C(0x71)
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#define BME680_CONF_OS_H_ADDR UINT8_C(0x72)
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#define BME680_MEM_PAGE_ADDR UINT8_C(0xf3)
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#define BME680_CONF_T_P_MODE_ADDR UINT8_C(0x74)
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#define BME680_CONF_ODR_FILT_ADDR UINT8_C(0x75)
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/** Coefficient's address */
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#define BME680_COEFF_ADDR1 UINT8_C(0x89)
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#define BME680_COEFF_ADDR2 UINT8_C(0xe1)
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/** Chip identifier */
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#define BME680_CHIP_ID_ADDR UINT8_C(0xd0)
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/** Soft reset register */
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#define BME680_SOFT_RESET_ADDR UINT8_C(0xe0)
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/** Heater control settings */
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#define BME680_ENABLE_HEATER UINT8_C(0x00)
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#define BME680_DISABLE_HEATER UINT8_C(0x08)
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/** Gas measurement settings */
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#define BME680_DISABLE_GAS_MEAS UINT8_C(0x00)
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#define BME680_ENABLE_GAS_MEAS UINT8_C(0x01)
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/** Over-sampling settings */
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#define BME680_OS_NONE UINT8_C(0)
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#define BME680_OS_1X UINT8_C(1)
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#define BME680_OS_2X UINT8_C(2)
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#define BME680_OS_4X UINT8_C(3)
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#define BME680_OS_8X UINT8_C(4)
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#define BME680_OS_16X UINT8_C(5)
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/** IIR filter settings */
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#define BME680_FILTER_SIZE_0 UINT8_C(0)
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#define BME680_FILTER_SIZE_1 UINT8_C(1)
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#define BME680_FILTER_SIZE_3 UINT8_C(2)
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#define BME680_FILTER_SIZE_7 UINT8_C(3)
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#define BME680_FILTER_SIZE_15 UINT8_C(4)
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#define BME680_FILTER_SIZE_31 UINT8_C(5)
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#define BME680_FILTER_SIZE_63 UINT8_C(6)
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#define BME680_FILTER_SIZE_127 UINT8_C(7)
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/** Power mode settings */
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#define BME680_SLEEP_MODE UINT8_C(0)
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#define BME680_FORCED_MODE UINT8_C(1)
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/** Delay related macro declaration */
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#define BME680_RESET_PERIOD UINT32_C(10)
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/** SPI memory page settings */
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#define BME680_MEM_PAGE0 UINT8_C(0x10)
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#define BME680_MEM_PAGE1 UINT8_C(0x00)
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/** Ambient humidity shift value for compensation */
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#define BME680_HUM_REG_SHIFT_VAL UINT8_C(4)
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/** Run gas enable and disable settings */
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#define BME680_RUN_GAS_DISABLE UINT8_C(0)
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#define BME680_RUN_GAS_ENABLE UINT8_C(1)
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/** Buffer length macro declaration */
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#define BME680_TMP_BUFFER_LENGTH UINT8_C(40)
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#define BME680_REG_BUFFER_LENGTH UINT8_C(6)
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#define BME680_FIELD_DATA_LENGTH UINT8_C(3)
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#define BME680_GAS_REG_BUF_LENGTH UINT8_C(20)
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#define BME680_GAS_HEATER_PROF_LEN_MAX UINT8_C(10)
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/** Settings selector */
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#define BME680_OST_SEL UINT16_C(1)
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#define BME680_OSP_SEL UINT16_C(2)
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#define BME680_OSH_SEL UINT16_C(4)
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#define BME680_GAS_MEAS_SEL UINT16_C(8)
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#define BME680_FILTER_SEL UINT16_C(16)
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#define BME680_HCNTRL_SEL UINT16_C(32)
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#define BME680_RUN_GAS_SEL UINT16_C(64)
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#define BME680_NBCONV_SEL UINT16_C(128)
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#define BME680_GAS_SENSOR_SEL (BME680_GAS_MEAS_SEL | BME680_RUN_GAS_SEL | BME680_NBCONV_SEL)
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/** Number of conversion settings*/
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#define BME680_NBCONV_MIN UINT8_C(0)
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#define BME680_NBCONV_MAX UINT8_C(10)
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/** Mask definitions */
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#define BME680_GAS_MEAS_MSK UINT8_C(0x30)
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#define BME680_NBCONV_MSK UINT8_C(0X0F)
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#define BME680_FILTER_MSK UINT8_C(0X1C)
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#define BME680_OST_MSK UINT8_C(0XE0)
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#define BME680_OSP_MSK UINT8_C(0X1C)
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#define BME680_OSH_MSK UINT8_C(0X07)
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#define BME680_HCTRL_MSK UINT8_C(0x08)
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#define BME680_RUN_GAS_MSK UINT8_C(0x10)
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#define BME680_MODE_MSK UINT8_C(0x03)
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#define BME680_RHRANGE_MSK UINT8_C(0x30)
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#define BME680_RSERROR_MSK UINT8_C(0xf0)
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#define BME680_NEW_DATA_MSK UINT8_C(0x80)
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#define BME680_GAS_INDEX_MSK UINT8_C(0x0f)
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#define BME680_GAS_RANGE_MSK UINT8_C(0x0f)
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#define BME680_GASM_VALID_MSK UINT8_C(0x20)
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#define BME680_HEAT_STAB_MSK UINT8_C(0x10)
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#define BME680_MEM_PAGE_MSK UINT8_C(0x10)
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#define BME680_SPI_RD_MSK UINT8_C(0x80)
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#define BME680_SPI_WR_MSK UINT8_C(0x7f)
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#define BME680_BIT_H1_DATA_MSK UINT8_C(0x0F)
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/** Bit position definitions for sensor settings */
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#define BME680_GAS_MEAS_POS UINT8_C(4)
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#define BME680_FILTER_POS UINT8_C(2)
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#define BME680_OST_POS UINT8_C(5)
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#define BME680_OSP_POS UINT8_C(2)
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#define BME680_RUN_GAS_POS UINT8_C(4)
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/** Array Index to Field data mapping for Calibration Data*/
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#define BME680_T2_LSB_REG (1)
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#define BME680_T2_MSB_REG (2)
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#define BME680_T3_REG (3)
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#define BME680_P1_LSB_REG (5)
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#define BME680_P1_MSB_REG (6)
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#define BME680_P2_LSB_REG (7)
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#define BME680_P2_MSB_REG (8)
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#define BME680_P3_REG (9)
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#define BME680_P4_LSB_REG (11)
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#define BME680_P4_MSB_REG (12)
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#define BME680_P5_LSB_REG (13)
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#define BME680_P5_MSB_REG (14)
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#define BME680_P7_REG (15)
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#define BME680_P6_REG (16)
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#define BME680_P8_LSB_REG (19)
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#define BME680_P8_MSB_REG (20)
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#define BME680_P9_LSB_REG (21)
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#define BME680_P9_MSB_REG (22)
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#define BME680_P10_REG (23)
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#define BME680_H2_MSB_REG (25)
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#define BME680_H2_LSB_REG (26)
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#define BME680_H1_LSB_REG (26)
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#define BME680_H1_MSB_REG (27)
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#define BME680_H3_REG (28)
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#define BME680_H4_REG (29)
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#define BME680_H5_REG (30)
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#define BME680_H6_REG (31)
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#define BME680_H7_REG (32)
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#define BME680_T1_LSB_REG (33)
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#define BME680_T1_MSB_REG (34)
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#define BME680_GH2_LSB_REG (35)
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#define BME680_GH2_MSB_REG (36)
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#define BME680_GH1_REG (37)
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#define BME680_GH3_REG (38)
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/** BME680 register buffer index settings*/
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#define BME680_REG_FILTER_INDEX UINT8_C(5)
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#define BME680_REG_TEMP_INDEX UINT8_C(4)
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#define BME680_REG_PRES_INDEX UINT8_C(4)
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#define BME680_REG_HUM_INDEX UINT8_C(2)
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#define BME680_REG_NBCONV_INDEX UINT8_C(1)
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#define BME680_REG_RUN_GAS_INDEX UINT8_C(1)
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#define BME680_REG_HCTRL_INDEX UINT8_C(0)
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/** Macro to combine two 8 bit data's to form a 16 bit data */
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#define BME680_CONCAT_BYTES(msb, lsb) (((uint16_t)msb << 8) | (uint16_t)lsb)
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/** Macro to SET and GET BITS of a register */
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#define BME680_SET_BITS(reg_data, bitname, data) \
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((reg_data & ~(bitname##_MSK)) | \
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((data << bitname##_POS) & bitname##_MSK))
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#define BME680_GET_BITS(reg_data, bitname) ((reg_data & (bitname##_MSK)) >> \
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(bitname##_POS))
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/** Macro variant to handle the bitname position if it is zero */
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#define BME680_SET_BITS_POS_0(reg_data, bitname, data) \
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((reg_data & ~(bitname##_MSK)) | \
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(data & bitname##_MSK))
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#define BME680_GET_BITS_POS_0(reg_data, bitname) (reg_data & (bitname##_MSK))
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/** Type definitions */
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/*
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* Generic communication function pointer
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* @param[in] dev_id: Place holder to store the id of the device structure
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* Can be used to store the index of the Chip select or
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* I2C address of the device.
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* @param[in] reg_addr: Used to select the register the where data needs to
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* be read from or written to.
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* @param[in/out] reg_data: Data array to read/write
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* @param[in] len: Length of the data array
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*/
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typedef int8_t (*bme680_com_fptr_t)(uint8_t dev_id, uint8_t reg_addr, uint8_t *data, uint16_t len);
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/*
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* Delay function pointer
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* @param[in] period: Time period in milliseconds
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*/
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typedef void (*bme680_delay_fptr_t)(uint32_t period);
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/*!
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* @brief Interface selection Enumerations
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*/
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enum bme680_intf {
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/*! SPI interface */
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BME680_SPI_INTF,
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/*! I2C interface */
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BME680_I2C_INTF
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};
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/* structure definitions */
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/*!
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* @brief Sensor field data structure
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*/
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struct bme680_field_data {
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/*! Contains new_data, gasm_valid & heat_stab */
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uint8_t status;
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/*! The index of the heater profile used */
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uint8_t gas_index;
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/*! Measurement index to track order */
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uint8_t meas_index;
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/*! Temperature in degree celsius x100 */
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int16_t temperature;
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/*! Pressure in Pascal */
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uint32_t pressure;
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/*! Humidity in % relative humidity x1000 */
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uint32_t humidity;
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/*! Gas resistance in Ohms */
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uint32_t gas_resistance;
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};
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/*!
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* @brief Structure to hold the Calibration data
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*/
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struct bme680_calib_data {
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/*! Variable to store calibrated humidity data */
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uint16_t par_h1;
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/*! Variable to store calibrated humidity data */
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uint16_t par_h2;
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/*! Variable to store calibrated humidity data */
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int8_t par_h3;
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/*! Variable to store calibrated humidity data */
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int8_t par_h4;
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/*! Variable to store calibrated humidity data */
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int8_t par_h5;
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/*! Variable to store calibrated humidity data */
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uint8_t par_h6;
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/*! Variable to store calibrated humidity data */
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int8_t par_h7;
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/*! Variable to store calibrated gas data */
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int8_t par_gh1;
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/*! Variable to store calibrated gas data */
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int16_t par_gh2;
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/*! Variable to store calibrated gas data */
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int8_t par_gh3;
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/*! Variable to store calibrated temperature data */
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uint16_t par_t1;
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/*! Variable to store calibrated temperature data */
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int16_t par_t2;
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/*! Variable to store calibrated temperature data */
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int8_t par_t3;
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/*! Variable to store calibrated pressure data */
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uint16_t par_p1;
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/*! Variable to store calibrated pressure data */
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int16_t par_p2;
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/*! Variable to store calibrated pressure data */
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int8_t par_p3;
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/*! Variable to store calibrated pressure data */
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int16_t par_p4;
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/*! Variable to store calibrated pressure data */
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int16_t par_p5;
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/*! Variable to store calibrated pressure data */
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int8_t par_p6;
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/*! Variable to store calibrated pressure data */
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int8_t par_p7;
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/*! Variable to store calibrated pressure data */
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int16_t par_p8;
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/*! Variable to store calibrated pressure data */
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int16_t par_p9;
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/*! Variable to store calibrated pressure data */
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uint8_t par_p10;
|
|
/*! Variable to store t_fine size */
|
|
int32_t t_fine;
|
|
/*! 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;
|
|
/*! Pointer to store heater temperature */
|
|
uint16_t heatr_temp;
|
|
/*! Pointer to store duration profile */
|
|
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;
|
|
/*! Burst read structure */
|
|
bme680_com_fptr_t read;
|
|
/*! Burst write structure */
|
|
bme680_com_fptr_t write;
|
|
/*! Delay in ms */
|
|
bme680_delay_fptr_t delay_ms;
|
|
/*! Communication function result */
|
|
int8_t com_rslt;
|
|
};
|
|
|
|
|
|
|
|
#endif /* BME680_DEFS_H_ */
|
|
/** @}*/
|
|
/** @}*/
|
|
|