Merge pull request #1957 from alignan/pull/bme280-sensor
sensors: bme280 weather sensor
This commit is contained in:
Antonio Lignan
GitHub
commit
ac2a31455e
26
dev/bme280/README.bme280
Normal file
26
dev/bme280/README.bme280
Normal file
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@ -0,0 +1,26 @@
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Contiki implementation for Bosch Sensortec BME280 sensor.
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BME280 is compact and fast and includes temp, RH, and pressure.
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Chip uses I2C or SPI. This implementation and follow Contiki
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device API and I2C.
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For better performance and less chip warm up and less I2C transactions
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burst read is recommended. Here all T/RH/P is read in one single
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I2C read and kept the measurements have the same time.
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The burst read is stored in struct bme280_mea which accessible from
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the Contiki. Also note that the full chip resolution is available.
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The variables are overscaled to give the app full controlover resolution.
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See bme280.h
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The pressure can be calculated with 32 or 64. The define BME280_64BIT
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controls this. Typically in your project-conf.h
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Implemented according to datasheet Rev 1.1.
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Limitations:
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Implementation implements Weather Mode which uses forced one-shot
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mode no oversampling nor filters and reads all T/RH/P in one read.
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45
dev/bme280/bme280-arch.h
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45
dev/bme280/bme280-arch.h
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@ -0,0 +1,45 @@
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/*
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* Copyright (c) 2016, Zolertia <http://www.zolertia.com>
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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
|
||||
* 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.
|
||||
*/
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/*---------------------------------------------------------------------------*/
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#ifndef BME280_ARCH_H
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#define BME280_ARCH_H
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/* Initialize the I2C module */
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void bme280_arch_i2c_init();
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/* I2C read registers */
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void bme280_arch_i2c_read_mem(uint8_t addr, uint8_t reg, uint8_t *buf,
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uint8_t bytes);
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/* I2C write to a single register */
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void bme280_arch_i2c_write_mem(uint8_t addr, uint8_t reg, uint8_t value);
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#endif
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/*---------------------------------------------------------------------------*/
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/** @} */
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79
dev/bme280/bme280-sensor.c
Normal file
79
dev/bme280/bme280-sensor.c
Normal file
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@ -0,0 +1,79 @@
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/*
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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
|
||||
* 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
|
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* 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
|
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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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* Created : 2016-09-14
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*/
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#include "contiki.h"
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#include "lib/sensors.h"
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#include "dev/bme280/bme280.h"
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#include "dev/bme280/bme280-sensor.h"
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/*---------------------------------------------------------------------------*/
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static int
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value(int type)
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{
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/* Read all measurements with one burst read */
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bme280_read(BME280_MODE_WEATHER);
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/* Return a la Contiki API */
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switch(type) {
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case BME280_SENSOR_TEMP:
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return bme280_mea.t_overscale100 / 100;
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case BME280_SENSOR_HUMIDITY:
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return bme280_mea.h_overscale1024 >> 10;
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case BME280_SENSOR_PRESSURE:
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/* Scale down w. 10 not to overslow the signed int */
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#ifdef BME280_64BIT
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return bme280_mea.p_overscale256 / (256 * 10);
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#else
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return bme280_mea.p / 10;
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#endif
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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static int
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status(int type)
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{
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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static int
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configure(int type, int c)
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{
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return bme280_init(BME280_MODE_WEATHER);
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}
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/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(bme280_sensor, "bme280", value, configure, status);
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48
dev/bme280/bme280-sensor.h
Normal file
48
dev/bme280/bme280-sensor.h
Normal file
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@ -0,0 +1,48 @@
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/*
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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
|
||||
* 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.
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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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* Created : 2016-09-14
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*/
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#ifndef BME280_SENSOR_H_
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#define BME280_SENSOR_H_
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#include "lib/sensors.h"
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#include "bme280.h"
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extern const struct sensors_sensor bme280_sensor;
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#define BME280_SENSOR_TEMP 0
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#define BME280_SENSOR_HUMIDITY 1
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#define BME280_SENSOR_PRESSURE 2
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#endif /* BME280_SENSOR_H_ */
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276
dev/bme280/bme280.c
Normal file
276
dev/bme280/bme280.c
Normal file
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@ -0,0 +1,276 @@
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/*
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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
|
||||
* 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
|
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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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* Created : 2016-09-14
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*/
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/**
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* \file
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* Basic functions for Bosch BME280 based on datasheet Rev 1.1
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*/
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#include "contiki.h"
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#include <string.h>
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#include "bme280.h"
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#include "bme280-arch.h"
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#include "lib/sensors.h"
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static struct {
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unsigned short dig_t1;
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signed short dig_t2;
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signed short dig_t3;
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unsigned short dig_p1;
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signed short dig_p2;
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signed short dig_p3;
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signed short dig_p4;
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signed short dig_p5;
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signed short dig_p6;
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signed short dig_p7;
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signed short dig_p8;
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signed short dig_p9;
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unsigned char dig_h1;
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signed short dig_h2;
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unsigned char dig_h3;
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signed short dig_h4;
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signed short dig_h5;
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signed char dig_h6;
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int32_t t_fine;
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uint8_t mode;
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} bm;
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int32_t
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bme280_t_overscale100(int32_t ut)
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{
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int32_t v1, v2, t;
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v1 = ((((ut >> 3) - ((int32_t)bm.dig_t1 << 1))) *
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((int32_t)bm.dig_t2)) >> 11;
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v2 = (((((ut >> 4) - ((int32_t)bm.dig_t1)) * ((ut >> 4) -
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((int32_t)bm.dig_t1))) >> 12) * ((int32_t)bm.dig_t3)) >> 14;
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bm.t_fine = v1 + v2;
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t = (bm.t_fine * 5 + 128) >> 8;
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return t;
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}
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#ifdef BME280_32BIT
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static uint32_t
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bme280_p(int32_t up)
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{
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int32_t v1, v2;
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uint32_t p;
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v1 = (((int32_t)bm.t_fine) >> 1) - (int32_t)64000;
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v2 = (((v1 >> 2) * (v1 >> 2)) >> 11) * ((int32_t)bm.dig_p6);
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v2 = v2 + ((v1 * ((int32_t)bm.dig_p5)) << 1);
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v2 = (v2 >> 2) + (((int32_t)bm.dig_p4) << 16);
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v1 = (((bm.dig_p3 * (((v1 >> 2) * (v1 >> 2)) >> 13)) >> 3) +
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((((int32_t)bm.dig_p2) * v1) >> 1)) >> 18;
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v1 = ((((32768 + v1)) * ((int32_t)bm.dig_p1)) >> 15);
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if(v1 == 0) {
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return 0;
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}
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p = (((uint32_t)(((int32_t)1048576) - up) - (v2 >> 12))) * 3125;
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if(p < 0x80000000) {
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p = (p << 1) / ((uint32_t)v1);
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} else {
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p = (p / (uint32_t)v1) * 2;
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}
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v1 = (((int32_t)bm.dig_p9) * ((int32_t)(((p >> 3) * (p >> 3)) >> 13))) >> 12;
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v2 = (((int32_t)(p >> 2)) * ((int32_t)bm.dig_p8)) >> 13;
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p = (uint32_t)((int32_t)p + ((v1 + v2 + bm.dig_p7) >> 4));
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return p;
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}
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#else
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static uint32_t
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bme280_p_overscale256(int32_t up)
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{
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int64_t v1, v2, p;
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v1 = ((int64_t)bm.t_fine) - 128000;
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v2 = v1 * v1 * (int64_t)bm.dig_p6;
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v2 = v2 + ((v1 * (int64_t)bm.dig_p5) << 17);
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v2 = v2 + (((int64_t)bm.dig_p4) << 35);
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v1 = ((v1 * v1 * (int64_t)bm.dig_p3) >> 8) + ((v1 * (int64_t)bm.dig_p2) << 12);
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v1 = (((((int64_t)1) << 47) + v1)) * ((int64_t)bm.dig_p1) >> 33;
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if(v1 == 0) {
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return 0;
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}
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p = 1048576 - up;
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p = (((p << 31) - v2) * 3125) / v1;
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v1 = (((int64_t)bm.dig_p9) * (p >> 13) * (p >> 13)) >> 25;
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v2 = (((int64_t)bm.dig_p8) * p) >> 19;
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p = (((p + v1 + v2) >> 8) + (((int64_t)bm.dig_p7) << 4));
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return (uint32_t)p;
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}
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#endif
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static uint32_t
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bme280_h_overscale1024(int32_t uh)
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{
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int32_t v1;
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v1 = (bm.t_fine - ((int32_t)76800));
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v1 = (((((uh << 14) - (((int32_t)bm.dig_h4) << 20) - (((int32_t)bm.dig_h5) * v1)) + ((int32_t)16384)) >> 15)
|
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* (((((((v1 * ((int32_t)bm.dig_h6)) >> 10) * (((v1 * ((int32_t)bm.dig_h3)) >> 11) + ((int32_t)32768)))
|
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>> 10) + ((int32_t)2097152)) * ((int32_t)bm.dig_h2) + 8192) >> 14));
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v1 = (v1 - (((((v1 >> 15) * (v1 >> 15)) >> 7) * ((int32_t)bm.dig_h1)) >> 4));
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v1 = (v1 < 0 ? 0 : v1);
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v1 = (v1 > 419430400 ? 419430400 : v1);
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return (uint32_t)(v1 >> 12);
|
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}
|
||||
uint8_t
|
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bme280_init(uint8_t mode)
|
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{
|
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uint16_t i;
|
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uint8_t buf[26];
|
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|
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bme280_arch_i2c_init();
|
||||
|
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/* Do not mess with other chips */
|
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bme280_arch_i2c_read_mem(BME280_ADDR, 0xD0, buf, 1);
|
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if(buf[0] != BME280_CHIP_ID) {
|
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return 0;
|
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}
|
||||
|
||||
bme280_arch_i2c_write_mem(BME280_ADDR, BME280_CNTL_RESET, 0xB6);
|
||||
|
||||
for(i = 0; i < BME280_MAX_WAIT; i++) {
|
||||
clock_delay_usec(1000);
|
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}
|
||||
|
||||
memset(buf, 0, sizeof(buf));
|
||||
|
||||
/* Burst read of all calibration part 1 */
|
||||
bme280_arch_i2c_read_mem(BME280_ADDR, BME280_DIG_T1_ADDR, buf, sizeof(buf));
|
||||
bm.dig_t1 = ((uint16_t)buf[1] << 8) | (uint16_t)buf[0];
|
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bm.dig_t2 = ((int16_t)buf[3] << 8) | (uint16_t)buf[2];
|
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bm.dig_t3 = ((int16_t)buf[5] << 8) | (uint16_t)buf[4];
|
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bm.dig_p1 = ((uint16_t)buf[7] << 8) | (uint16_t)buf[6];
|
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bm.dig_p2 = ((int16_t)buf[9] << 8) | (uint16_t)buf[8];
|
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bm.dig_p3 = ((int16_t)buf[11] << 8) | (uint16_t)buf[10];
|
||||
bm.dig_p4 = ((int16_t)buf[13] << 8) | (uint16_t)buf[12];
|
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bm.dig_p5 = ((int16_t)buf[15] << 8) | (uint16_t)buf[14];
|
||||
bm.dig_p6 = ((int16_t)buf[17] << 8) | (uint16_t)buf[16];
|
||||
bm.dig_p7 = ((int16_t)buf[19] << 8) | (uint16_t)buf[18];
|
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bm.dig_p8 = ((int16_t)buf[21] << 8) | (uint16_t)buf[20];
|
||||
bm.dig_p9 = ((int16_t)buf[23] << 8) | (uint16_t)buf[22];
|
||||
/* A0 not used */
|
||||
bm.dig_h1 = (unsigned char)buf[25];
|
||||
|
||||
/* Burst read of all calibration part 2 */
|
||||
bme280_arch_i2c_read_mem(BME280_ADDR, BME280_DIG_H2_ADDR, buf, 8);
|
||||
bm.dig_h2 = ((int16_t)buf[1] << 8) | (uint16_t)buf[0];
|
||||
bm.dig_h3 = (unsigned char)buf[2];
|
||||
bm.dig_h4 = ((int16_t)buf[3] << 4) | (((uint16_t)buf[4]) & 0xF);
|
||||
bm.dig_h5 = ((int16_t)buf[6] << 4) | (((uint16_t)buf[5]) & 0xF);
|
||||
bm.dig_h6 = (unsigned char)buf[7];
|
||||
|
||||
bm.mode = mode;
|
||||
return 1;
|
||||
}
|
||||
void
|
||||
bme280_read(uint8_t mode)
|
||||
{
|
||||
int32_t ut, uh, up;
|
||||
uint8_t buf[8], sleep;
|
||||
uint16_t i;
|
||||
memset(buf, 0, sizeof(buf));
|
||||
|
||||
/* Are we initilized and in the right mode? */
|
||||
if(mode == BME280_MODE_NONE || mode != bm.mode) {
|
||||
return;
|
||||
}
|
||||
|
||||
ut = uh = up = 0;
|
||||
|
||||
/* Weather mode. See sectiom 3.5 Datasheet */
|
||||
if(mode == BME280_MODE_WEATHER) {
|
||||
/* Humidity oversampling *1 */
|
||||
bme280_arch_i2c_write_mem(BME280_ADDR, BME280_CNTL_HUM, 0x01);
|
||||
|
||||
/* 00100111 0x27 oversampling *1 for t and p plus normal mode */
|
||||
/* 0.5 ms -- no filter -- no SPI */
|
||||
bme280_arch_i2c_write_mem(BME280_ADDR, BME280_CONTROL, 0x00);
|
||||
|
||||
/* 00100110 0x26 oversampling *1 for t and p plus forced mode */
|
||||
/* Trigger measurement needed for every time in forced mode */
|
||||
bme280_arch_i2c_write_mem(BME280_ADDR, BME280_CNTL_MEAS, 0x26);
|
||||
/* Wait to get into sleep mode == measurement done */
|
||||
for(i = 0; i < BME280_MAX_WAIT; i++) {
|
||||
bme280_arch_i2c_read_mem(BME280_ADDR, BME280_CNTL_MEAS, &sleep, 1);
|
||||
sleep = sleep& 0x03;
|
||||
if(sleep== 0) {
|
||||
break;
|
||||
} else {
|
||||
clock_delay_usec(1000);
|
||||
}
|
||||
}
|
||||
if(i == BME280_MAX_WAIT) {
|
||||
return; /* error wait*/
|
||||
}
|
||||
} else { /* if(mode == BME280_MODE_WEATHER) */
|
||||
return; /* error mode*/
|
||||
}
|
||||
|
||||
/* Burst read of all measurements */
|
||||
bme280_arch_i2c_read_mem(BME280_ADDR, BME280_PRESS, buf, 8);
|
||||
ut = (uint32_t)(buf[3]) << 12 | (uint32_t)(buf[4]) << 4 | (uint32_t)buf[5] >> 4;
|
||||
up = (uint32_t)(buf[0]) << 12 | (uint32_t)(buf[1]) << 4 | (uint32_t)buf[2] >> 4;
|
||||
uh = (uint32_t)(buf[6]) << 8 | (uint32_t)buf[7];
|
||||
|
||||
bme280_mea.t_overscale100 = bme280_t_overscale100(ut);
|
||||
bme280_mea.h_overscale1024 = bme280_h_overscale1024(uh);
|
||||
#ifdef BME280_64BIT
|
||||
bme280_mea.p_overscale256 = bme280_p_overscale256(up);
|
||||
#else
|
||||
bme280_mea.p = bme280_p(up);
|
||||
#endif
|
||||
|
||||
#if TEST
|
||||
printf("T_BME280=%5.2f", (double)bme280_mea.t_overscale100 / 100.);
|
||||
printf(" RH_BME280=%5.2f ", (double)bme280_mea.h_overscale1024 / 1024.);
|
||||
#ifdef BME280_64BIT
|
||||
printf(" P_BME280=%5.2f\n", (double)bme280_mea.p_overscale256 / 256.);
|
||||
#else
|
||||
printf(" P_BME280=%5.2f\n", (double)bme280_mea.p);
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
110
dev/bme280/bme280.h
Normal file
110
dev/bme280/bme280.h
Normal file
|
|
@ -0,0 +1,110 @@
|
|||
/*
|
||||
* 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 */
|
||||
|
|
@ -8,6 +8,7 @@ PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min
|
|||
PRINTF_LIB = $(PRINTF_LIB_FLT)
|
||||
CLIBS = $(PRINTF_LIB)
|
||||
|
||||
MODULES += dev/bme280
|
||||
|
||||
CUSTOM_RULE_LINK = 1
|
||||
%.$(TARGET): %.co $(PROJECT_OBJECTFILES) $(PROJECT_LIBRARIES) contiki-$(TARGET).a
|
||||
|
|
|
|||
|
|
@ -49,9 +49,8 @@
|
|||
#include "dev/temp_mcu-sensor.h"
|
||||
#include "dev/light-sensor.h"
|
||||
#include "dev/pulse-sensor.h"
|
||||
#ifdef CO2
|
||||
#include "dev/bme280/bme280-sensor.h"
|
||||
#include "dev/co2_sa_kxx-sensor.h"
|
||||
#endif
|
||||
/*---------------------------------------------------------------------------*/
|
||||
PROCESS(hello_sensors_process, "Hello sensor process");
|
||||
AUTOSTART_PROCESSES(&hello_sensors_process);
|
||||
|
|
@ -80,9 +79,29 @@ read_values(void)
|
|||
printf(" LIGHT=%-d", light_sensor.value(0));
|
||||
printf(" PULSE_0=%-d", pulse_sensor.value(0));
|
||||
printf(" PULSE_1=%-d", pulse_sensor.value(1));
|
||||
#ifdef CO2
|
||||
printf(" CO2=%-d", co2_sa_kxx_sensor.value( CO2_SA_KXX_CO2));
|
||||
|
||||
if( i2c_probed & I2C_CO2SA ) {
|
||||
printf(" CO2=%-d", co2_sa_kxx_sensor.value( CO2_SA_KXX_CO2));
|
||||
}
|
||||
|
||||
if( i2c_probed & I2C_BME280 ) {
|
||||
#if STD_API
|
||||
printf(" BME280_TEMP=%-d", bme280_sensor.value(BME280_SENSOR_TEMP));
|
||||
printf(" BME280_RH=%-d", bme280_sensor.value(BME280_SENSOR_HUMIDITY));
|
||||
printf(" BME280_P=%-d", bme280_sensor.value(BME280_SENSOR_PRESSURE));
|
||||
#else
|
||||
/* Trigger burst read */
|
||||
bme280_sensor.value(BME280_SENSOR_TEMP);
|
||||
printf(" T_BME280=%5.2f", (double)bme280_mea.t_overscale100 / 100.);
|
||||
printf(" RH_BME280=%5.2f", (double)bme280_mea.h_overscale1024 / 1024.);
|
||||
#ifdef BME280_64BIT
|
||||
printf(" P_BME280=%5.2f", (double)bme280_mea.p_overscale256 / 256.);
|
||||
#else
|
||||
printf(" P_BME280=%5.2f", (double)bme280_mea.p);
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
||||
printf("\n");
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
|
|
@ -95,9 +114,14 @@ PROCESS_THREAD(hello_sensors_process, ev, data)
|
|||
SENSORS_ACTIVATE(temp_mcu_sensor);
|
||||
SENSORS_ACTIVATE(light_sensor);
|
||||
SENSORS_ACTIVATE(pulse_sensor);
|
||||
#ifdef CO2
|
||||
SENSORS_ACTIVATE(co2_sa_kxx_sensor);
|
||||
#endif
|
||||
|
||||
if( i2c_probed & I2C_BME280 ) {
|
||||
SENSORS_ACTIVATE(bme280_sensor);
|
||||
}
|
||||
|
||||
if( i2c_probed & I2C_CO2SA ) {
|
||||
SENSORS_ACTIVATE(co2_sa_kxx_sensor);
|
||||
}
|
||||
leds_init();
|
||||
leds_on(LEDS_RED);
|
||||
leds_on(LEDS_YELLOW);
|
||||
|
|
|
|||
|
|
@ -42,6 +42,8 @@
|
|||
#ifndef PROJECT_CONF_H_
|
||||
#define PROJECT_CONF_H_
|
||||
|
||||
/* #define BME280_32BIT */
|
||||
|
||||
#define NETSTACK_CONF_RDC nullrdc_driver
|
||||
#define NETSTACK_CONF_MAC nullmac_driver
|
||||
|
||||
|
|
|
|||
|
|
@ -5,12 +5,15 @@ CONTIKI_PROJECT += test-bmp085-bmp180 test-motion test-rotation-sensor
|
|||
CONTIKI_PROJECT += test-grove-light-sensor test-grove-loudness-sensor
|
||||
CONTIKI_PROJECT += test-weather-meter test-grove-gyro test-lcd test-iaq
|
||||
CONTIKI_PROJECT += test-pm10-sensor test-vac-sensor test-aac-sensor
|
||||
CONTIKI_PROJECT += test-zonik test-dht22.c test-ac-dimmer.c
|
||||
CONTIKI_PROJECT += test-zonik test-dht22.c test-ac-dimmer.c test-servo.c
|
||||
CONTIKI_PROJECT += test-bme280
|
||||
|
||||
CONTIKI_TARGET_SOURCEFILES += tsl256x.c sht25.c bmpx8x.c motion-sensor.c
|
||||
CONTIKI_TARGET_SOURCEFILES += adc-sensors.c weather-meter.c grove-gyro.c
|
||||
CONTIKI_TARGET_SOURCEFILES += rgb-bl-lcd.c pm10-sensor.c iaq.c zonik.c relay.c
|
||||
CONTIKI_TARGET_SOURCEFILES += dht22.c servo.c ac-dimmer.c
|
||||
CONTIKI_TARGET_SOURCEFILES += dht22.c servo.c ac-dimmer.c bme280-arch.c
|
||||
|
||||
MODULES += /dev/bme280
|
||||
|
||||
all: $(CONTIKI_PROJECT)
|
||||
|
||||
|
|
|
|||
|
|
@ -50,6 +50,9 @@
|
|||
#define MOTION_SENSOR_PIN 5
|
||||
#define MOTION_SENSOR_VECTOR GPIO_A_IRQn
|
||||
|
||||
/* Use the following I2C address for the BME280 sensor (from MikroElektronika) */
|
||||
#define BME280_CONF_ADDR 0x76
|
||||
|
||||
#endif /* PROJECT_CONF_H_ */
|
||||
|
||||
/** @} */
|
||||
|
|
|
|||
93
examples/zolertia/zoul/test-bme280.c
Normal file
93
examples/zolertia/zoul/test-bme280.c
Normal file
|
|
@ -0,0 +1,93 @@
|
|||
/*
|
||||
* Copyright (c) 2016, Zolertia <http://www.zolertia.com>
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/**
|
||||
* \addtogroup zoul-examples
|
||||
* @{
|
||||
*
|
||||
* \defgroup zoul-bme280-test BME280 temperature and humidity sensor test
|
||||
*
|
||||
* Demonstrates the use of the BME280 digital temperature and humidity sensor
|
||||
* @{
|
||||
*
|
||||
* \file
|
||||
* A quick program for testing the BME280 temperature and humidity sensor
|
||||
* \author
|
||||
* Antonio Lignan <alinan@zolertia.com>
|
||||
*/
|
||||
/*---------------------------------------------------------------------------*/
|
||||
#include <stdio.h>
|
||||
#include "contiki.h"
|
||||
#include "dev/bme280/bme280.h"
|
||||
#include "dev/bme280/bme280-sensor.h"
|
||||
/*---------------------------------------------------------------------------*/
|
||||
#define BME280_USE_STD_API 1
|
||||
/*---------------------------------------------------------------------------*/
|
||||
PROCESS(zoul_bme280_process, "BME280 test");
|
||||
AUTOSTART_PROCESSES(&zoul_bme280_process);
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static struct etimer et;
|
||||
/*---------------------------------------------------------------------------*/
|
||||
PROCESS_THREAD(zoul_bme280_process, ev, data)
|
||||
{
|
||||
PROCESS_BEGIN();
|
||||
SENSORS_ACTIVATE(bme280_sensor);
|
||||
|
||||
/* Let it spin and read sensor data */
|
||||
|
||||
while(1) {
|
||||
etimer_set(&et, CLOCK_SECOND);
|
||||
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
|
||||
#if BME280_USE_STD_API
|
||||
printf("temperature = %-d ", bme280_sensor.value(BME280_SENSOR_TEMP));
|
||||
printf("humidity = %-d ", bme280_sensor.value(BME280_SENSOR_HUMIDITY));
|
||||
printf("pressure = %-d\n", bme280_sensor.value(BME280_SENSOR_PRESSURE));
|
||||
#else /* BME280_USE_STD_API */
|
||||
/* Trigger burst read */
|
||||
bme280_sensor.value(BME280_SENSOR_TEMP);
|
||||
printf("temperature = %5.2f" , (double)bme280_mea.t_overscale100 / 100.);
|
||||
printf("humidity = %5.2f ", (double)bme280_mea.h_overscale1024 / 1024.);
|
||||
#ifdef BME280_64BIT
|
||||
printf("pressure = %5.2f\n", (double)bme280_mea.p_overscale256 / 256.);
|
||||
#else /* BME280_64BIT */
|
||||
printf("pressure = %5.2f\n", (double)bme280_mea.p);
|
||||
#endif /* BME280_64BIT */
|
||||
#endif /* BME280_USE_STD_API */
|
||||
}
|
||||
PROCESS_END();
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/**
|
||||
* @}
|
||||
* @}
|
||||
*/
|
||||
|
||||
|
|
@ -10,6 +10,7 @@ CONTIKI_TARGET_SOURCEFILES += temp-sensor.c
|
|||
|
||||
CONTIKI_TARGET_SOURCEFILES += enc28j60_avr.c
|
||||
CONTIKI_TARGET_SOURCEFILES += co2_sa_kxx-sensor.c
|
||||
CONTIKI_TARGET_SOURCEFILES += bme280-arch.c
|
||||
|
||||
CONTIKIAVR=$(CONTIKI)/cpu/avr
|
||||
CONTIKIBOARD=.
|
||||
|
|
|
|||
51
platform/avr-rss2/dev/bme280-arch.c
Normal file
51
platform/avr-rss2/dev/bme280-arch.c
Normal file
|
|
@ -0,0 +1,51 @@
|
|||
/*
|
||||
* Copyright (c) 2016, Zolertia
|
||||
* 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 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.
|
||||
*/
|
||||
/*---------------------------------------------------------------------------*/
|
||||
#include "contiki.h"
|
||||
#include "i2c.h"
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
bme280_arch_i2c_init(void)
|
||||
{
|
||||
/* Does nothing */
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
bme280_arch_i2c_write_mem(uint8_t addr, uint8_t reg, uint8_t value)
|
||||
{
|
||||
i2c_write_mem(addr, reg, value);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
bme280_arch_i2c_read_mem(uint8_t addr, uint8_t reg, uint8_t *buf, uint8_t bytes)
|
||||
{
|
||||
i2c_read_mem(addr, reg, buf, bytes);
|
||||
}
|
||||
|
|
@ -224,5 +224,11 @@ i2c_probe(void)
|
|||
probed |= I2C_CO2SA;
|
||||
print_delim(p++, "CO2SA", del);
|
||||
}
|
||||
watchdog_periodic();
|
||||
if(!i2c_start(I2C_BME280_ADDR)) {
|
||||
i2c_stop();
|
||||
probed |= I2C_BME280;
|
||||
print_delim(p++, "BME280", del);
|
||||
}
|
||||
return probed;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -40,12 +40,13 @@
|
|||
/* Here we define the i2c address for dev we support */
|
||||
#define I2C_AT24MAC_ADDR 0xB0 /* EUI64 ADDR */
|
||||
#define I2C_SHT2X_ADDR (0x40 << 1) /* SHT2X ADDR */
|
||||
|
||||
#define I2C_BME280_ADDR (0x77 << 1) /* Alternative 0x76 */
|
||||
|
||||
/* Here we define a enumration for devices */
|
||||
#define I2C_AT24MAC (1<<0)
|
||||
#define I2C_SHT2X (1<<1)
|
||||
#define I2C_CO2SA (1<<2) /* Sense-Air CO2 */
|
||||
#define I2C_BME280 (1<<3)
|
||||
|
||||
#define I2C_READ 1
|
||||
#define I2C_WRITE 0
|
||||
|
|
|
|||
78
platform/zoul/dev/bme280-arch.c
Normal file
78
platform/zoul/dev/bme280-arch.c
Normal file
|
|
@ -0,0 +1,78 @@
|
|||
/*
|
||||
* Copyright (c) 2015, Zolertia
|
||||
* 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 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.
|
||||
*/
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/**
|
||||
* \addtogroup zoul-bme280-sensor
|
||||
* @{
|
||||
*
|
||||
* \file
|
||||
* Architecture-specific I2C for the external BME280 weather sensor
|
||||
*
|
||||
* \author
|
||||
* Antonio Lignan <alinan@zolertia.com>
|
||||
*/
|
||||
/*---------------------------------------------------------------------------*/
|
||||
#include "contiki.h"
|
||||
#include "dev/i2c.h"
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
bme280_arch_i2c_init(void)
|
||||
{
|
||||
i2c_init(I2C_SDA_PORT, I2C_SDA_PIN, I2C_SCL_PORT, I2C_SCL_PIN,
|
||||
I2C_SCL_NORMAL_BUS_SPEED);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
bme280_arch_i2c_write_mem(uint8_t addr, uint8_t reg, uint8_t value)
|
||||
{
|
||||
uint8_t buf[2];
|
||||
|
||||
buf[0] = reg;
|
||||
buf[1] = value;
|
||||
|
||||
i2c_master_enable();
|
||||
i2c_burst_send(addr, buf, 2);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
bme280_arch_i2c_read_mem(uint8_t addr, uint8_t reg, uint8_t *buf, uint8_t bytes)
|
||||
{
|
||||
i2c_master_enable();
|
||||
if(i2c_single_send(addr, reg) == I2C_MASTER_ERR_NONE) {
|
||||
while(i2c_master_busy());
|
||||
i2c_burst_receive(addr, buf, bytes);
|
||||
}
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/**
|
||||
* @}
|
||||
*/
|
||||
|
||||
Loading…
Reference in a new issue