111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/*
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* Copyright (c) 2015, Copyright Robert Olsson
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* All rights reserved.
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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
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* are met:
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* 1. 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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* 2. 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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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*
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* Author : Robert Olsson rolss@kth.se/robert@radio-sensors.com
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*
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* Created : 2016-09-14
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*/
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/**
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* \file
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* Definitions for the Bosch BME280 based on datasheet Rev 1.1
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*/
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#ifndef BME280_H
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#define BME280_H
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#ifndef BME280_32BIT
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#define BME280_64BIT
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#endif
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uint8_t bme280_init(uint8_t mode);
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void bme280_read(uint8_t mode);
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#ifdef BME280_CONF_ADDR
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#define BME280_ADDR BME280_CONF_ADDR
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#else
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#define BME280_ADDR (0x77 << 1) /* Alternative 0x76 */
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#endif
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/* Diffrent BOSCH chip id's */
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#define BMP085_CHIP_ID 0x55 /* And also BMP180 */
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#define BMP280_CHIP_ID 0x58
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#define BME280_CHIP_ID 0x60
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/* Address map */
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#define BME280_DIG_T1_ADDR 0x88
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#define BME280_DIG_T2_ADDR 0x8A
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#define BME280_DIG_T3_ADDR 0x8C
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#define BME280_DIG_P1_ADDR 0x8E
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#define BME280_DIG_P2_ADDR 0x90
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#define BME280_DIG_P3_ADDR 0x92
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#define BME280_DIG_P4_ADDR 0x94
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#define BME280_DIG_P5_ADDR 0x96
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#define BME280_DIG_P6_ADDR 0x98
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#define BME280_DIG_P7_ADDR 0x9A
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#define BME280_DIG_P8_ADDR 0x9C
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#define BME280_DIG_P9_ADDR 0x9E
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#define BME280_DIG_H1_ADDR 0xA1
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#define BMP_CHIP_ID_ADDR 0xD0
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#define BME280_CNTL_RESET 0xE0
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#define BME280_DIG_H2_ADDR 0xE1
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#define BME280_DIG_H3_ADDR 0xE3
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#define BME280_DIG_H4_ADDR 0xE4
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#define BME280_DIG_H5_ADDR 0xE5
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#define BME280_DIG_H6_ADDR 0xE7
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#define BME280_CNTL_HUM 0xF2
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#define BME280_STATUS 0xF3
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#define BME280_CNTL_MEAS 0xF4
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#define BME280_CONTROL 0xF5
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#define BME280_PRESS 0xF7
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/* Function modes outlined in datasheet */
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#define BME280_MODE_NONE 0
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#define BME280_MODE_WEATHER 1
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#define BME280_MODE_HUMIDITY 2
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#define BME280_MODE_INDOOR_NAVIGATION 3
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#define BME280_MODE_GAMING 4
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#define BME280_MAX_WAIT 300 /* ms. Forced mode max wait */
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struct {
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int32_t t_overscale100;
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uint32_t h_overscale1024;
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#ifdef BME280_64BIT
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uint32_t p_overscale256;
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#else
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uint32_t p;
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#endif
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} bme280_mea;
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#endif /* BME280_H */
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