bme680.h

/**
 * Copyright (c) 2020 Bosch Sensortec GmbH. All rights reserved.
 *
 * BSD-3-Clause
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 *    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 THE
 * 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.
 *
 * @file	bme680.h
 * @date	23 Jan 2020
 * @version	3.5.10
 * @brief
 *
 */
/*! @file bme680.h
 @brief Sensor driver for BME680 sensor */
/*!
 * @defgroup BME680 SENSOR API
 * @{*/
#ifndef BME680_H_
#define BME680_H_

/*! CPP guard */
#ifdef __cplusplus
extern "C"
{
#endif

/* Header includes */
#include "i2c.h"
#include "bme680_defs.h"

void user_delay_ms(uint32_t period);
int8_t user_i2c_read(void *handle, uint8_t dev_id, uint8_t reg_addr, uint8_t *reg_data, uint16_t len);
int8_t user_i2c_write(void *handle, uint8_t dev_id, uint8_t reg_addr, uint8_t *reg_data, uint16_t len);

/* function prototype declarations */
/*!
 *  @brief This API is the entry point.
 *  It reads the chip-id and calibration data from the sensor.
 *
 *  @param[in,out] dev : Structure instance of bme680_dev
 *
 *  @return Result of API execution status
 *  @retval zero -> Success / +ve value -> Warning / -ve value -> Error
 */
int8_t bme680_init(struct bme680_dev *dev);

/*!
 * @brief This API writes the given data to the register address
 * of the sensor.
 *
 * @param[in] reg_addr : Register address from where the data to be written.
 * @param[in] reg_data : Pointer to data buffer which is to be written
 * in the sensor.
 * @param[in] len : No of bytes of data to write..
 * @param[in] dev : Structure instance of bme680_dev.
 *
 * @return Result of API execution status
 * @retval zero -> Success / +ve value -> Warning / -ve value -> Error
 */
int8_t bme680_set_regs(const uint8_t *reg_addr, const uint8_t *reg_data, uint8_t len, struct bme680_dev *dev);

/*!
 * @brief This API reads the data from the given register address of the sensor.
 *
 * @param[in] reg_addr : Register address from where the data to be read
 * @param[out] reg_data : Pointer to data buffer to store the read data.
 * @param[in] len : No of bytes of data to be read.
 * @param[in] dev : Structure instance of bme680_dev.
 *
 * @return Result of API execution status
 * @retval zero -> Success / +ve value -> Warning / -ve value -> Error
 */
int8_t bme680_get_regs(uint8_t reg_addr, uint8_t *reg_data, uint16_t len, struct bme680_dev *dev);

/*!
 * @brief This API performs the soft reset of the sensor.
 *
 * @param[in] dev : Structure instance of bme680_dev.
 *
 * @return Result of API execution status
 * @retval zero -> Success / +ve value -> Warning / -ve value -> Error.
 */
int8_t bme680_soft_reset(struct bme680_dev *dev);

/*!
 * @brief This API is used to set the power mode of the sensor.
 *
 * @param[in] dev : Structure instance of bme680_dev
 * @note : Pass the value to bme680_dev.power_mode structure variable.
 *
 *  value	|	mode
 * -------------|------------------
 *	0x00	|	BME680_SLEEP_MODE
 *	0x01	|	BME680_FORCED_MODE
 *
 * * @return Result of API execution status
 * @retval zero -> Success / +ve value -> Warning / -ve value -> Error
 */
int8_t bme680_set_sensor_mode(struct bme680_dev *dev);

/*!
 * @brief This API is used to get the power mode of the sensor.
 *
 * @param[in] dev : Structure instance of bme680_dev
 * @note : bme680_dev.power_mode structure variable hold the power mode.
 *
 *  value	|	mode
 * ---------|------------------
 *	0x00	|	BME680_SLEEP_MODE
 *	0x01	|	BME680_FORCED_MODE
 *
 * @return Result of API execution status
 * @retval zero -> Success / +ve value -> Warning / -ve value -> Error
 */
int8_t bme680_get_sensor_mode(struct bme680_dev *dev);

/*!
 * @brief This API is used to set the profile duration of the sensor.
 *
 * @param[in] dev	   : Structure instance of bme680_dev.
 * @param[in] duration : Duration of the measurement in ms.
 *
 * @return Nothing
 */
void bme680_set_profile_dur(uint16_t duration, struct bme680_dev *dev);

/*!
 * @brief This API is used to get the profile duration of the sensor.
 *
 * @param[in] dev	   : Structure instance of bme680_dev.
 * @param[in] duration : Duration of the measurement in ms.
 *
 * @return Nothing
 */
void bme680_get_profile_dur(uint16_t *duration, const struct bme680_dev *dev);

/*!
 * @brief This API reads the pressure, temperature and humidity and gas data
 * from the sensor, compensates the data and store it in the bme680_data
 * structure instance passed by the user.
 *
 * @param[out] data: Structure instance to hold the data.
 * @param[in] dev : Structure instance of bme680_dev.
 *
 * @return Result of API execution status
 * @retval zero -> Success / +ve value -> Warning / -ve value -> Error
 */
int8_t bme680_get_sensor_data(struct bme680_field_data *data, struct bme680_dev *dev);

/*!
 * @brief This API is used to set the oversampling, filter and T,P,H, gas selection
 * settings in the sensor.
 *
 * @param[in] dev : Structure instance of bme680_dev.
 * @param[in] desired_settings : Variable used to select the settings which
 * are to be set in the sensor.
 *
 *	 Macros	                   |  Functionality
 *---------------------------------|----------------------------------------------
 *	BME680_OST_SEL             |    To set temperature oversampling.
 *	BME680_OSP_SEL             |    To set pressure oversampling.
 *	BME680_OSH_SEL             |    To set humidity oversampling.
 *	BME680_GAS_MEAS_SEL        |    To set gas measurement setting.
 *	BME680_FILTER_SEL          |    To set filter setting.
 *	BME680_HCNTRL_SEL          |    To set humidity control setting.
 *	BME680_RUN_GAS_SEL         |    To set run gas setting.
 *	BME680_NBCONV_SEL          |    To set NB conversion setting.
 *	BME680_GAS_SENSOR_SEL      |    To set all gas sensor related settings
 *
 * @note : Below are the macros to be used by the user for selecting the
 * desired settings. User can do OR operation of these macros for configuring
 * multiple settings.
 *
 * @return Result of API execution status
 * @retval zero -> Success / +ve value -> Warning / -ve value -> Error.
 */
int8_t bme680_set_sensor_settings(uint16_t desired_settings, struct bme680_dev *dev);

/*!
 * @brief This API is used to get the oversampling, filter and T,P,H, gas selection
 * settings in the sensor.
 *
 * @param[in] dev : Structure instance of bme680_dev.
 * @param[in] desired_settings : Variable used to select the settings which
 * are to be get from the sensor.
 *
 * @return Result of API execution status
 * @retval zero -> Success / +ve value -> Warning / -ve value -> Error.
 */
int8_t bme680_get_sensor_settings(uint16_t desired_settings, struct bme680_dev *dev);
#ifdef __cplusplus
}
#endif /* End of CPP guard */
#endif /* BME680_H_ */
/** @}*/