diff options
Diffstat (limited to 'driver/baro_bmp280.h')
| -rw-r--r-- | driver/baro_bmp280.h | 205 |
1 files changed, 102 insertions, 103 deletions
diff --git a/driver/baro_bmp280.h b/driver/baro_bmp280.h index ee95bd886f..605f3db4fa 100644 --- a/driver/baro_bmp280.h +++ b/driver/baro_bmp280.h @@ -1,62 +1,62 @@ -/* Copyright 2016 The Chromium OS Authors. All rights reserved. +/* Copyright 2016 The ChromiumOS Authors * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ /** \mainpage -* -**************************************************************************** -* Copyright (C) 2012 - 2015 Bosch Sensortec GmbH -* -* File : bmp280.h -* -* Date : 2015/03/27 -* -* Revision : 2.0.4(Pressure and Temperature compensation code revision is 1.1) -* -* Usage: Sensor Driver for BMP280 sensor -* -**************************************************************************** -* -* \section License -* -* 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. -**************************************************************************/ + * + **************************************************************************** + * Copyright (C) 2012 - 2015 Bosch Sensortec GmbH + * + * File : bmp280.h + * + * Date : 2015/03/27 + * + * Revision : 2.0.4(Pressure and Temperature compensation code revision is 1.1) + * + * Usage: Sensor Driver for BMP280 sensor + * + **************************************************************************** + * + * \section License + * + * 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. + **************************************************************************/ /* BMP280 pressure and temperature module for Chrome EC */ #ifndef __CROS_EC_BARO_BMP280_H @@ -74,80 +74,81 @@ * Bit 1 of 7-bit address: 0 - If SDO is connected to GND * Bit 1 of 7-bit address: 1 - If SDO is connected to Vddio */ -#define BMP280_I2C_ADDRESS1_FLAGS 0x76 -#define BMP280_I2C_ADDRESS2_FLAGS 0x77 +#define BMP280_I2C_ADDRESS1_FLAGS 0x76 +#define BMP280_I2C_ADDRESS2_FLAGS 0x77 /* * CHIP ID */ -#define BMP280_CHIP_ID 0x58 +#define BMP280_CHIP_ID 0x58 /************************************************/ /* CALIBRATION PARAMETERS DEFINITION */ /************************************************/ -#define BMP280_TEMPERATURE_CALIB_DIG_T1_LSB_REG 0x88 +#define BMP280_TEMPERATURE_CALIB_DIG_T1_LSB_REG 0x88 /************************************************/ /* REGISTER ADDRESS DEFINITION */ /************************************************/ -#define BMP280_CHIP_ID_REG 0xD0 -#define BMP280_RST_REG 0xE0 /*Softreset Register */ -#define BMP280_STAT_REG 0xF3 /*Status Register */ -#define BMP280_CTRL_MEAS_REG 0xF4 /*Ctrl Measure Register */ -#define BMP280_CONFIG_REG 0xF5 /*Configuration Register */ -#define BMP280_PRESSURE_MSB_REG 0xF7 /*Pressure MSB Register */ -#define BMP280_PRESSURE_LSB_REG 0xF8 /*Pressure LSB Register */ -#define BMP280_PRESSURE_XLSB_REG 0xF9 /*Pressure XLSB Register */ +#define BMP280_CHIP_ID_REG 0xD0 +#define BMP280_RST_REG 0xE0 /*Softreset Register */ +#define BMP280_STAT_REG 0xF3 /*Status Register */ +#define BMP280_CTRL_MEAS_REG 0xF4 /*Ctrl Measure Register */ +#define BMP280_CONFIG_REG 0xF5 /*Configuration Register */ +#define BMP280_PRESSURE_MSB_REG 0xF7 /*Pressure MSB Register */ +#define BMP280_PRESSURE_LSB_REG 0xF8 /*Pressure LSB Register */ +#define BMP280_PRESSURE_XLSB_REG 0xF9 /*Pressure XLSB Register */ /************************************************/ /* POWER MODE DEFINITION */ /************************************************/ /* Sensor Specific constants */ -#define BMP280_SLEEP_MODE 0x00 -#define BMP280_FORCED_MODE 0x01 -#define BMP280_NORMAL_MODE 0x03 -#define BMP280_SOFT_RESET_CODE 0xB6 +#define BMP280_SLEEP_MODE 0x00 +#define BMP280_FORCED_MODE 0x01 +#define BMP280_NORMAL_MODE 0x03 +#define BMP280_SOFT_RESET_CODE 0xB6 /************************************************/ /* STANDBY TIME DEFINITION */ /************************************************/ -#define BMP280_STANDBY_TIME_1_MS 0x00 -#define BMP280_STANDBY_TIME_63_MS 0x01 -#define BMP280_STANDBY_TIME_125_MS 0x02 -#define BMP280_STANDBY_TIME_250_MS 0x03 -#define BMP280_STANDBY_TIME_500_MS 0x04 -#define BMP280_STANDBY_TIME_1000_MS 0x05 -#define BMP280_STANDBY_TIME_2000_MS 0x06 -#define BMP280_STANDBY_TIME_4000_MS 0x07 +#define BMP280_STANDBY_TIME_1_MS 0x00 +#define BMP280_STANDBY_TIME_63_MS 0x01 +#define BMP280_STANDBY_TIME_125_MS 0x02 +#define BMP280_STANDBY_TIME_250_MS 0x03 +#define BMP280_STANDBY_TIME_500_MS 0x04 +#define BMP280_STANDBY_TIME_1000_MS 0x05 +#define BMP280_STANDBY_TIME_2000_MS 0x06 +#define BMP280_STANDBY_TIME_4000_MS 0x07 /************************************************/ /* OVERSAMPLING DEFINITION */ /************************************************/ -#define BMP280_OVERSAMP_SKIPPED 0x00 -#define BMP280_OVERSAMP_1X 0x01 -#define BMP280_OVERSAMP_2X 0x02 -#define BMP280_OVERSAMP_4X 0x03 -#define BMP280_OVERSAMP_8X 0x04 -#define BMP280_OVERSAMP_16X 0x05 +#define BMP280_OVERSAMP_SKIPPED 0x00 +#define BMP280_OVERSAMP_1X 0x01 +#define BMP280_OVERSAMP_2X 0x02 +#define BMP280_OVERSAMP_4X 0x03 +#define BMP280_OVERSAMP_8X 0x04 +#define BMP280_OVERSAMP_16X 0x05 /************************************************/ /* DEFINITIONS FOR ARRAY SIZE OF DATA */ /************************************************/ -#define BMP280_PRESSURE_DATA_SIZE 3 -#define BMP280_DATA_FRAME_SIZE 6 -#define BMP280_CALIB_DATA_SIZE 24 +#define BMP280_PRESSURE_DATA_SIZE 3 +#define BMP280_DATA_FRAME_SIZE 6 +#define BMP280_CALIB_DATA_SIZE 24 /*******************************************************/ /* SAMPLING PERIOD COMPUTATION CONSTANT */ /*******************************************************/ -#define BMP280_STANDBY_CNT 8 -#define T_INIT_MAX (20) /* (20/16 = 1.25ms) */ -#define T_MEASURE_PER_OSRS_MAX (37) /* (37/16 = 2.31ms) */ -#define T_SETUP_PRESSURE_MAX (10) /* (10/16 = 0.62ms) */ +#define BMP280_STANDBY_CNT 8 +#define T_INIT_MAX (20) /* (20/16 = 1.25ms) */ +#define T_MEASURE_PER_OSRS_MAX (37) /* (37/16 = 2.31ms) */ +#define T_SETUP_PRESSURE_MAX (10) /* (10/16 = 0.62ms) */ /* * This is the measurement time required for pressure and temp */ -#define BMP280_COMPUTE_TIME \ - ((T_INIT_MAX + T_MEASURE_PER_OSRS_MAX * \ - ((BIT(BMP280_OVERSAMP_TEMP) >> 1) + \ - (BIT(BMP280_OVERSAMP_PRES) >> 1)) + \ - (BMP280_OVERSAMP_PRES ? T_SETUP_PRESSURE_MAX : 0) + 15) / 16) +#define BMP280_COMPUTE_TIME \ + ((T_INIT_MAX + \ + T_MEASURE_PER_OSRS_MAX * ((BIT(BMP280_OVERSAMP_TEMP) >> 1) + \ + (BIT(BMP280_OVERSAMP_PRES) >> 1)) + \ + (BMP280_OVERSAMP_PRES ? T_SETUP_PRESSURE_MAX : 0) + 15) / \ + 16) /* * These values are selected as per Bosch recommendation for @@ -158,15 +159,14 @@ /*******************************************************/ /* GET DRIVER DATA */ /*******************************************************/ -#define BMP280_GET_DATA(_s) \ - ((struct bmp280_drv_data_t *)(_s)->drv_data) +#define BMP280_GET_DATA(_s) ((struct bmp280_drv_data_t *)(_s)->drv_data) /* Min and Max sampling frequency in mHz based on x4 oversampling used */ /* FIXME - verify how chip is setup to make sure MAX is correct, manual says * "Typical", not Max. */ -#define BMP280_BARO_MIN_FREQ 75000 -#define BMP280_BARO_MAX_FREQ 87000 +#define BMP280_BARO_MIN_FREQ 75000 +#define BMP280_BARO_MAX_FREQ 87000 #if (CONFIG_EC_MAX_SENSOR_FREQ_MILLIHZ <= BMP280_BARO_MAX_FREQ) #error "EC too slow for accelerometer" #endif @@ -208,8 +208,7 @@ struct bmp280_calib_param_t { * @range: bit offset to fit data in 16 bit or less. */ struct bmp280_drv_data_t { - - struct bmp280_calib_param_t calib_param; + struct bmp280_calib_param_t calib_param; uint16_t rate; uint16_t range; }; |