contiki/dev/bme280/bme280.h
2016-11-30 12:04:57 +01:00

111 lines
3.8 KiB
C

/*
* Copyright (c) 2015, Copyright Robert Olsson
* All rights reserved.
*
* 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 Institute 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 INSTITUTE 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 INSTITUTE 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.
*
* This file is part of the Contiki operating system.
*
*
* Author : Robert Olsson rolss@kth.se/robert@radio-sensors.com
*
* Created : 2016-09-14
*/
/**
* \file
* Definitions for the Bosch BME280 based on datasheet Rev 1.1
*/
#ifndef BME280_H
#define BME280_H
#ifndef BME280_32BIT
#define BME280_64BIT
#endif
uint8_t bme280_init(uint8_t mode);
void bme280_read(uint8_t mode);
#ifdef BME280_CONF_ADDR
#define BME280_ADDR BME280_CONF_ADDR
#else
#define BME280_ADDR (0x77 << 1) /* Alternative 0x76 */
#endif
/* Diffrent BOSCH chip id's */
#define BMP085_CHIP_ID 0x55 /* And also BMP180 */
#define BMP280_CHIP_ID 0x58
#define BME280_CHIP_ID 0x60
/* Address map */
#define BME280_DIG_T1_ADDR 0x88
#define BME280_DIG_T2_ADDR 0x8A
#define BME280_DIG_T3_ADDR 0x8C
#define BME280_DIG_P1_ADDR 0x8E
#define BME280_DIG_P2_ADDR 0x90
#define BME280_DIG_P3_ADDR 0x92
#define BME280_DIG_P4_ADDR 0x94
#define BME280_DIG_P5_ADDR 0x96
#define BME280_DIG_P6_ADDR 0x98
#define BME280_DIG_P7_ADDR 0x9A
#define BME280_DIG_P8_ADDR 0x9C
#define BME280_DIG_P9_ADDR 0x9E
#define BME280_DIG_H1_ADDR 0xA1
#define BMP_CHIP_ID_ADDR 0xD0
#define BME280_CNTL_RESET 0xE0
#define BME280_DIG_H2_ADDR 0xE1
#define BME280_DIG_H3_ADDR 0xE3
#define BME280_DIG_H4_ADDR 0xE4
#define BME280_DIG_H5_ADDR 0xE5
#define BME280_DIG_H6_ADDR 0xE7
#define BME280_CNTL_HUM 0xF2
#define BME280_STATUS 0xF3
#define BME280_CNTL_MEAS 0xF4
#define BME280_CONTROL 0xF5
#define BME280_PRESS 0xF7
/* Function modes outlined in datasheet */
#define BME280_MODE_NONE 0
#define BME280_MODE_WEATHER 1
#define BME280_MODE_HUMIDITY 2
#define BME280_MODE_INDOOR_NAVIGATION 3
#define BME280_MODE_GAMING 4
#define BME280_MAX_WAIT 300 /* ms. Forced mode max wait */
struct {
int32_t t_overscale100;
uint32_t h_overscale1024;
#ifdef BME280_64BIT
uint32_t p_overscale256;
#else
uint32_t p;
#endif
} bme280_mea;
#endif /* BME280_H */