首页下载资源物联网BME280组合式温湿度气压传感器（数据手册、使用、原理图）

ZIPBME280组合式温湿度气压传感器（数据手册、使用、原理图）

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资源文件列表:

280.zip 大约有7个文件
  1. 280/bme280.c 44.74KB
  2. 280/bme280.h 8.88KB
  3. 280/bme280_application.c 7.38KB
  4. 280/bme280_application.h 958B
  5. 280/bme280_defs.h 10.28KB
  6. 280/main.c 5.83KB
  7. 280/

资源介绍:

BME280是一款成熟的数字湿度、压力和温度传感器。该传感器有一个非常紧凑的金属盖LGA封装，所需面积仅为2.5x2.5mm²，高度为0.93mm。它体积小，功耗低，适合在手机、GPS手持机或手表等电池驱动设备中应用。BME280与Bosch SensortecBMP280数字压力传感器寄存器和特性相兼容。BME280可为所有需要湿度和压力测量的应用场景下提供高性能输出。这些新兴的家庭自动化控制、室内导航、健身以及高精度GPS等场景要求传感器同时具有较高的精度和较低的持有成本(TCO)。
/**\mainpage * Copyright (C) 2016 - 2017 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 bme280.c * Date 14 Feb 2018 * Version 3.3.4 * */ /*! @file bme280.c @brief Sensor driver for BME280 sensor */ #include "bme280.h" /**\name Internal macros */ /* To identify osr settings selected by user */ #define OVERSAMPLING_SETTINGS UINT8_C(0x07) /* To identify filter and standby settings selected by user */ #define FILTER_STANDBY_SETTINGS UINT8_C(0x18) /*! * @brief This internal API puts the device to sleep mode. * * @param[in] dev : Structure instance of bme280_dev. * * @return Result of API execution status. * @retval zero -> Success / +ve value -> Warning / -ve value -> Error */ static int8_t put_device_to_sleep(const struct bme280_dev *dev); /*! * @brief This internal API writes the power mode in the sensor. * * @param[in] dev : Structure instance of bme280_dev. * @param[in] sensor_mode : Variable which contains the power mode to be set. * * @return Result of API execution status. * @retval zero -> Success / +ve value -> Warning / -ve value -> Error */ static int8_t write_power_mode(uint8_t sensor_mode, const struct bme280_dev *dev); /*! * @brief This internal API is used to validate the device pointer for * null conditions. * * @param[in] dev : Structure instance of bme280_dev. * * @return Result of API execution status * @retval zero -> Success / +ve value -> Warning / -ve value -> Error */ static int8_t null_ptr_check(const struct bme280_dev *dev); /*! * @brief This internal API interleaves the register address between the * register data buffer for burst write operation. * * @param[in] reg_addr : Contains the register address array. * @param[out] temp_buff : Contains the temporary buffer to store the * register data and register address. * @param[in] reg_data : Contains the register data to be written in the * temporary buffer. * @param[in] len : No of bytes of data to be written for burst write. */ static void interleave_reg_addr(const uint8_t *reg_addr, uint8_t *temp_buff, const uint8_t *reg_data, uint8_t len); /*! * @brief This internal API reads the calibration data from the sensor, parse * it and store in the device structure. * * @param[in] dev : Structure instance of bme280_dev. * * @return Result of API execution status * @retval zero -> Success / +ve value -> Warning / -ve value -> Error */ static int8_t get_calib_data(struct bme280_dev *dev); /*! * @brief This internal API is used to parse the temperature and * pressure calibration data and store it in the device structure. * * @param[out] dev : Structure instance of bme280_dev to store the calib data. * @param[in] reg_data : Contains the calibration data to be parsed. */ static void parse_temp_press_calib_data(const uint8_t *reg_data, struct bme280_dev *dev); /*! * @brief This internal API is used to parse the humidity calibration data * and store it in device structure. * * @param[out] dev : Structure instance of bme280_dev to store the calib data. * @param[in] reg_data : Contains calibration data to be parsed. */ static void parse_humidity_calib_data(const uint8_t *reg_data, struct bme280_dev *dev); #ifdef BME280_FLOAT_ENABLE /*! * @brief This internal API is used to compensate the raw pressure data and * return the compensated pressure data in double data type. * * @param[in] uncomp_data : Contains the uncompensated pressure data. * @param[in] calib_data : Pointer to the calibration data structure. * * @return Compensated pressure data. * @retval Compensated pressure data in double. */ static double compensate_pressure(const struct bme280_uncomp_data *uncomp_data, const struct bme280_calib_data *calib_data); /*! * @brief This internal API is used to compensate the raw humidity data and * return the compensated humidity data in double data type. * * @param[in] uncomp_data : Contains the uncompensated humidity data. * @param[in] calib_data : Pointer to the calibration data structure. * * @return Compensated humidity data. * @retval Compensated humidity data in double. */ static double compensate_humidity(const struct bme280_uncomp_data *uncomp_data, const struct bme280_calib_data *calib_data); /*! * @brief This internal API is used to compensate the raw temperature data and * return the compensated temperature data in double data type. * * @param[in] uncomp_data : Contains the uncompensated temperature data. * @param[in] calib_data : Pointer to calibration data structure. * * @return Compensated temperature data. * @retval Compensated temperature data in double. */ static double compensate_temperature(const struct bme280_uncomp_data *uncomp_data, struct bme280_calib_data *calib_data); #else /*! * @brief This internal API is used to compensate the raw temperature data and * return the compensated temperature data in integer data type. * * @param[in] uncomp_data : Contains the uncompensated temperature data. * @param[in] calib_data : Pointer to calibration data structure. * * @return Compensated temperature data. * @retval Compensated temperature data in integer. */ static int32_t compensate_temperature(const struct bme280_uncomp_data *uncomp_data, struct bme280_calib_data *calib_data); /*! * @brief This internal API is used to compensate the raw pressure data and * return the compensated pressure data in integer data type. * * @param[in] uncomp_data : Contains the uncompensated pressure data. * @param[in] calib_data : Pointer to the calibration data structure. * * @return Compensated pressure data. * @retval Compensated pressure data in integer. */ static uint32_t compensate_pressure(const struct bme280_uncomp_data *uncomp_data, const struct bme280_ca
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