Merge pull request #1449 from alignan/pull/bmp085-sensor
BMP085 barometric sensor for the RE-Mote platform
This commit is contained in:
Antonio Lignan
commit
94657b7a72
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@ -1,6 +1,7 @@
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DEFINES+=PROJECT_CONF_H=\"project-conf.h\"
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DEFINES+=PROJECT_CONF_H=\"project-conf.h\"
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CONTIKI_PROJECT = zoul-demo test-tsl2563 test-sht25 test-pwm test-power-mgmt
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CONTIKI_PROJECT = zoul-demo test-tsl2563 test-sht25 test-pwm test-power-mgmt
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CONTIKI_TARGET_SOURCEFILES += tsl2563.c sht25.c
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CONTIKI_PROJECT += test-bmp085
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CONTIKI_TARGET_SOURCEFILES += tsl2563.c sht25.c bmp085.c
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all: $(CONTIKI_PROJECT)
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all: $(CONTIKI_PROJECT)
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94
examples/zolertia/zoul/test-bmp085.c
Normal file
94
examples/zolertia/zoul/test-bmp085.c
Normal file
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@ -0,0 +1,94 @@
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/*
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* Copyright (c) 2015, Zolertia - http://www.zolertia.com
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* All rights reserved.
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||||||
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*
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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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||||||
|
*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup zoul-examples
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* @{
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*
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* \defgroup zoul-bmp085-test BMP085 pressure and temperature sensor test
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*
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* Demonstrates the use of the BMP085 digital pressure and temperature sensor
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* @{
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*
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* \file
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* Driver for the external BMP085 digital pressure and temperature sensor
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*
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* \author
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* Antonio Lignan <alinan@zolertia.com>
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*/
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/*---------------------------------------------------------------------------*/
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#include <stdio.h>
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#include "contiki.h"
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#include "dev/i2c.h"
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#include "dev/leds.h"
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#include "dev/bmp085.h"
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/*---------------------------------------------------------------------------*/
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#define SENSOR_READ_INTERVAL (CLOCK_SECOND)
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/*---------------------------------------------------------------------------*/
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PROCESS(remote_bmp085_process, "BMP085 test process");
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AUTOSTART_PROCESSES(&remote_bmp085_process);
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/*---------------------------------------------------------------------------*/
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static struct etimer et;
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(remote_bmp085_process, ev, data)
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{
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PROCESS_BEGIN();
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static uint16_t pressure;
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static int16_t temperature;
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/* Use Contiki's sensor macro to enable the sensor */
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SENSORS_ACTIVATE(bmp085);
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/* And periodically poll the sensor */
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while(1) {
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etimer_set(&et, SENSOR_READ_INTERVAL);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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pressure = bmp085.value(BMP085_READ_PRESSURE);
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temperature = bmp085.value(BMP085_READ_TEMP);
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if((pressure != BMP085_ERROR) && (temperature != BMP085_ERROR)) {
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printf("Pressure = %u.%u(hPa), ", pressure / 10, pressure % 10);
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printf("Temperature = %d.%u(ºC)\n", temperature / 10, temperature % 10);
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} else {
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printf("Error, enable the DEBUG flag in the BMP085 driver for info, ");
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printf("or check if the sensor is properly connected\n");
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PROCESS_EXIT();
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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/**
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* @}
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* @}
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*/
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360
platform/zoul/dev/bmp085.c
Normal file
360
platform/zoul/dev/bmp085.c
Normal file
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@ -0,0 +1,360 @@
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/*
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|
* Copyright (c) 2015, Zolertia - http://www.zolertia.com
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||||||
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* 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.
|
||||||
|
*
|
||||||
|
*/
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/*---------------------------------------------------------------------------*/
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/**
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* \addtogroup zoul-bmp085-sensor
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* @{
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*
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* BMP085 driver implementation, calculations taken from Inga sensor driver
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*
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* \file
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* Driver for the external BMP085 light sensor
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*
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* \author
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* Antonio Lignan <alinan@zolertia.com>
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*/
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/*---------------------------------------------------------------------------*/
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#include "contiki.h"
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#include "dev/i2c.h"
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#include "dev/gpio.h"
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#include "dev/zoul-sensors.h"
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#include "lib/sensors.h"
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#include "bmp085.h"
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/*---------------------------------------------------------------------------*/
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#define DEBUG 1
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#if DEBUG
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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/*---------------------------------------------------------------------------*/
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static uint8_t enabled = 0;
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/*---------------------------------------------------------------------------*/
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typedef struct {
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int16_t ac1;
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int16_t ac2;
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int16_t ac3;
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uint16_t ac4;
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uint16_t ac5;
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uint16_t ac6;
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int16_t b1;
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int16_t b2;
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int16_t mb;
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int16_t mc;
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int16_t md;
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} bmp085_calibration_values;
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typedef struct {
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uint8_t oversampling_mode;
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int32_t b5;
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bmp085_calibration_values calib;
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} bmp085_config;
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static bmp085_config bmp085_values;
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/*---------------------------------------------------------------------------*/
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static int
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bmp085_read_reg(uint8_t reg, uint8_t *buf, uint8_t num)
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{
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if((buf == NULL) || (num <= 0)) {
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PRINTF("BMP085: invalid read values\n");
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return BMP085_ERROR;
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}
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i2c_master_enable();
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if(i2c_single_send(BMP085_ADDR, reg) == I2C_MASTER_ERR_NONE) {
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while(i2c_master_busy());
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if(i2c_burst_receive(BMP085_ADDR, buf, num) == I2C_MASTER_ERR_NONE) {
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return BMP085_SUCCESS;
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}
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}
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return BMP085_ERROR;
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}
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/*---------------------------------------------------------------------------*/
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static int
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bmp085_write_reg(uint8_t *buf, uint8_t num)
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{
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if((buf == NULL) || (num <= 0)) {
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PRINTF("BMP085: invalid write values\n");
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return BMP085_ERROR;
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}
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i2c_master_enable();
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if(i2c_burst_send(BMP085_ADDR, buf, num) == I2C_MASTER_ERR_NONE) {
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return BMP085_SUCCESS;
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}
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return BMP085_ERROR;
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}
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/*---------------------------------------------------------------------------*/
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static int
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bmp085_read_calib(void)
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{
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uint8_t buf[BMP085_CALIB_TABLE_SIZE];
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if(bmp085_read_reg(BMP085_AC1_CALIB, buf,
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BMP085_CALIB_TABLE_SIZE) == BMP085_SUCCESS) {
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/* MSB first */
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bmp085_values.calib.ac1 = ((buf[0] << 8) + buf[1]);
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bmp085_values.calib.ac2 = ((buf[2] << 8) + buf[3]);
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bmp085_values.calib.ac3 = ((buf[4] << 8) + buf[5]);
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bmp085_values.calib.ac4 = ((buf[6] << 8) + buf[7]);
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bmp085_values.calib.ac5 = ((buf[8] << 8) + buf[9]);
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bmp085_values.calib.ac6 = ((buf[10] << 8) + buf[11]);
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bmp085_values.calib.b1 = ((buf[12] << 8) + buf[13]);
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bmp085_values.calib.b2 = ((buf[14] << 8) + buf[15]);
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bmp085_values.calib.mb = ((buf[16] << 8) + buf[17]);
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bmp085_values.calib.mc = ((buf[18] << 8) + buf[19]);
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bmp085_values.calib.md = ((buf[20] << 8) + buf[21]);
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return BMP085_SUCCESS;
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}
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|
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PRINTF("BMP085: failed to read calibration\n");
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return BMP085_ERROR;
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|
}
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/*---------------------------------------------------------------------------*/
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static int
|
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bmp085_read_uncompensated_pressure(int32_t *pressure)
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|
{
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uint8_t buf[3];
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|
uint16_t delay;
|
||||||
|
int32_t upres;
|
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|
|
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buf[0] = BMP085_CTRL_REG;
|
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|
|
||||||
|
switch(bmp085_values.oversampling_mode) {
|
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|
case BMP085_MODE_ULTRA_LOW_POWER:
|
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|
buf[1] = BMP085_CTRL_REG_PRESS_4_5MS;
|
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|
delay = BMP085_DELAY_4_5MS;
|
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|
break;
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|
case BMP085_MODE_STANDARD:
|
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buf[1] = BMP085_CTRL_REG_PRESS_7_5MS;
|
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|
delay = BMP085_DELAY_7_5MS;
|
||||||
|
break;
|
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|
case BMP085_MODE_HIGH_RES:
|
||||||
|
buf[1] = BMP085_CTRL_REG_PRESS_13_5MS;
|
||||||
|
delay = BMP085_DELAY_13_5MS;
|
||||||
|
break;
|
||||||
|
case BMP085_MODE_ULTRA_HIGH_RES:
|
||||||
|
buf[1] = BMP085_CTRL_REG_PRESS_25_5MS;
|
||||||
|
delay = BMP085_DELAY_25_5MS;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
if(bmp085_write_reg(buf, 2) == BMP085_SUCCESS) {
|
||||||
|
clock_delay_usec(delay);
|
||||||
|
if(bmp085_read_reg(BMP085_DATA_MSB, buf, 3) == BMP085_SUCCESS) {
|
||||||
|
upres = (buf[0] << 16) + (buf[1] << 8) + buf[2];
|
||||||
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*pressure = (upres >> (8 - bmp085_values.oversampling_mode));
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||||||
|
return BMP085_SUCCESS;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
static int
|
||||||
|
bmp085_read_uncompensated_temperature(int32_t *temp)
|
||||||
|
{
|
||||||
|
uint8_t buf[2];
|
||||||
|
buf[0] = BMP085_CTRL_REG;
|
||||||
|
buf[1] = BMP085_CTRL_REG_TEMP;
|
||||||
|
|
||||||
|
if(bmp085_write_reg(buf, 2) == BMP085_SUCCESS) {
|
||||||
|
clock_delay_usec(BMP085_DELAY_4_5MS);
|
||||||
|
if(bmp085_read_reg(BMP085_DATA_MSB, buf, 2) == BMP085_SUCCESS) {
|
||||||
|
*temp = (int32_t)((buf[0] << 8) + buf[1]);
|
||||||
|
return BMP085_SUCCESS;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
static int
|
||||||
|
bmp085_read_temperature(int16_t *temp)
|
||||||
|
{
|
||||||
|
int32_t ut = 0;
|
||||||
|
int32_t x1, x2;
|
||||||
|
|
||||||
|
if(bmp085_read_uncompensated_temperature(&ut) == BMP085_ERROR) {
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
x1 = ((int32_t)ut - (int32_t)bmp085_values.calib.ac6)
|
||||||
|
* (int32_t)bmp085_values.calib.ac5 >> 15;
|
||||||
|
x2 = ((int32_t)bmp085_values.calib.mc << 11) / (x1 + bmp085_values.calib.md);
|
||||||
|
bmp085_values.b5 = x1 + x2;
|
||||||
|
*temp = (int16_t)((bmp085_values.b5 + 8) >> 4);
|
||||||
|
return BMP085_SUCCESS;
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
static int
|
||||||
|
bmp085_read_pressure(int32_t *pressure)
|
||||||
|
{
|
||||||
|
int32_t ut = 0;
|
||||||
|
int32_t up = 0;
|
||||||
|
int32_t x1, x2, b6, x3, b3, p;
|
||||||
|
uint32_t b4, b7;
|
||||||
|
|
||||||
|
if(bmp085_read_uncompensated_pressure(&up) == BMP085_ERROR) {
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
if(bmp085_read_uncompensated_temperature(&ut) == BMP085_ERROR) {
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
b6 = bmp085_values.b5 - 4000;
|
||||||
|
x1 = (bmp085_values.calib.b2 * (b6 * b6 >> 12)) >> 11;
|
||||||
|
x2 = bmp085_values.calib.ac2 * b6 >> 11;
|
||||||
|
x3 = x1 + x2;
|
||||||
|
b3 = ((((int32_t)bmp085_values.calib.ac1) * 4 + x3) + 2) >> 2;
|
||||||
|
|
||||||
|
x1 = (bmp085_values.calib.ac3 * b6) >> 13;
|
||||||
|
x2 = (bmp085_values.calib.b1 * ((b6 * b6) >> 12)) >> 16;
|
||||||
|
x3 = ((x1 + x2) + 2) >> 2;
|
||||||
|
b4 = (bmp085_values.calib.ac4 * ((uint32_t)(x3 + 32768))) >> 15;
|
||||||
|
b7 = ((uint32_t)up - b3) * 50000;
|
||||||
|
|
||||||
|
if(b7 < 0x80000000) {
|
||||||
|
p = (b7 << 1) / b4;
|
||||||
|
} else {
|
||||||
|
p = (b7 / b4) << 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
x1 = (p >> 8) * (p >> 8);
|
||||||
|
x1 = (x1 * 3038) >> 16;
|
||||||
|
x2 = (-7357 * p) >> 16;
|
||||||
|
*pressure = (p + ((x1 + x2 + 3791) >> 4));
|
||||||
|
*pressure /= 10;
|
||||||
|
|
||||||
|
return BMP085_SUCCESS;
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
static int
|
||||||
|
configure(int type, int value)
|
||||||
|
{
|
||||||
|
if((type != BMP085_ACTIVE) && (type != BMP085_OVERSAMPLING)) {
|
||||||
|
PRINTF("BMP085: invalid start value\n");
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
if(type == BMP085_ACTIVE) {
|
||||||
|
if(value) {
|
||||||
|
i2c_init(I2C_SDA_PORT, I2C_SDA_PIN, I2C_SCL_PORT, I2C_SCL_PIN,
|
||||||
|
I2C_SCL_NORMAL_BUS_SPEED);
|
||||||
|
|
||||||
|
/* Read the calibration values */
|
||||||
|
if(bmp085_read_calib() != BMP085_ERROR) {
|
||||||
|
PRINTF("BMP085: sensor started\n");
|
||||||
|
enabled = 1;
|
||||||
|
bmp085_values.oversampling_mode = BMP085_MODE_ULTRA_LOW_POWER;
|
||||||
|
return BMP085_SUCCESS;
|
||||||
|
}
|
||||||
|
|
||||||
|
PRINTF("BMP085: failed to enable\n");
|
||||||
|
return BMP085_ERROR;
|
||||||
|
} else {
|
||||||
|
enabled = 0;
|
||||||
|
return BMP085_SUCCESS;
|
||||||
|
}
|
||||||
|
} else if(type == BMP085_OVERSAMPLING) {
|
||||||
|
if((value < BMP085_MODE_ULTRA_LOW_POWER) ||
|
||||||
|
(value > BMP085_MODE_ULTRA_HIGH_RES)) {
|
||||||
|
PRINTF("BMP085: invalid oversampling value\n");
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
bmp085_values.oversampling_mode = value;
|
||||||
|
return BMP085_SUCCESS;
|
||||||
|
}
|
||||||
|
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
static int
|
||||||
|
status(int type)
|
||||||
|
{
|
||||||
|
switch(type) {
|
||||||
|
case SENSORS_ACTIVE:
|
||||||
|
case SENSORS_READY:
|
||||||
|
return enabled;
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
static int
|
||||||
|
bmp085_read_sensor(int32_t *value, uint8_t type)
|
||||||
|
{
|
||||||
|
int16_t temp = 0;
|
||||||
|
|
||||||
|
/* The temperature is required to compensate the pressure value */
|
||||||
|
if(bmp085_read_temperature(&temp) != BMP085_SUCCESS) {
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
switch(type) {
|
||||||
|
case BMP085_READ_PRESSURE:
|
||||||
|
return bmp085_read_pressure(value);
|
||||||
|
|
||||||
|
case BMP085_READ_TEMP:
|
||||||
|
*value = (int16_t) temp;
|
||||||
|
return BMP085_SUCCESS;
|
||||||
|
}
|
||||||
|
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
static int
|
||||||
|
value(int type)
|
||||||
|
{
|
||||||
|
int32_t value;
|
||||||
|
|
||||||
|
if(!enabled) {
|
||||||
|
PRINTF("BMP085: sensor not started\n");
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
if((type != BMP085_READ_PRESSURE) && (type != BMP085_READ_TEMP)) {
|
||||||
|
PRINTF("BMP085: invalid read value\n");
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
if(bmp085_read_sensor(&value, type) == BMP085_SUCCESS) {
|
||||||
|
return (int)value;
|
||||||
|
}
|
||||||
|
|
||||||
|
PRINTF("BMP085: fail to read\n");
|
||||||
|
return BMP085_ERROR;
|
||||||
|
}
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
SENSORS_SENSOR(bmp085, BMP085_SENSOR, value, configure, status);
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
/** @} */
|
||||||
136
platform/zoul/dev/bmp085.h
Normal file
136
platform/zoul/dev/bmp085.h
Normal file
|
|
@ -0,0 +1,136 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2015, 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-sensors
|
||||||
|
* @{
|
||||||
|
*
|
||||||
|
* \defgroup zoul-bmp085-sensor BMP085 Sensor
|
||||||
|
*
|
||||||
|
* Driver for the BMP085 sensor
|
||||||
|
*
|
||||||
|
* BMP085 digital pressure and temperature driver
|
||||||
|
* @{
|
||||||
|
*
|
||||||
|
* \file
|
||||||
|
* Header file for the external BMP085 Sensor Driver
|
||||||
|
*
|
||||||
|
* \author
|
||||||
|
* Antonio Lignan <alinan@zolertia.com>
|
||||||
|
*/
|
||||||
|
/*---------------------------------------------------------------------------*/
|
||||||
|
#ifndef BMP085_H_
|
||||||
|
#define BMP085_H_
|
||||||
|
#include <stdio.h>
|
||||||
|
#include "lib/sensors.h"
|
||||||
|
#include "dev/zoul-sensors.h"
|
||||||
|
#include "i2c.h"
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
/**
|
||||||
|
* \name BMP085 address and registers
|
||||||
|
* @{
|
||||||
|
*/
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
#define BMP085_ADDR 0x77
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
/* Control register */
|
||||||
|
#define BMP085_CTRL_REG 0xF4
|
||||||
|
/* Read uncompensated temperature */
|
||||||
|
#define BMP085_CTRL_REG_TEMP 0x2E
|
||||||
|
/* Read uncompensated pressure, no oversampling */
|
||||||
|
#define BMP085_CTRL_REG_PRESS_4_5MS 0x34
|
||||||
|
/* Read uncompensated pressure, oversampling 1*/
|
||||||
|
#define BMP085_CTRL_REG_PRESS_7_5MS 0x74
|
||||||
|
/* Read uncompensated pressure, oversampling 2 */
|
||||||
|
#define BMP085_CTRL_REG_PRESS_13_5MS 0xB4
|
||||||
|
/* Read uncompensated pressure, oversampling 3 */
|
||||||
|
#define BMP085_CTRL_REG_PRESS_25_5MS 0xF4
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
#define BMP085_DATA_MSB 0xF6
|
||||||
|
#define BMP085_DATA_LSB 0xF7
|
||||||
|
/* 19-bit resolution */
|
||||||
|
#define BMP085_DATA_XLSB 0xF8
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
/* Calibration registers, 16-bit wide */
|
||||||
|
#define BMP085_AC1_CALIB 0xAA
|
||||||
|
#define BMP085_AC2_CALIB 0xAC
|
||||||
|
#define BMP085_AC3_CALIB 0xAE
|
||||||
|
#define BMP085_AC4_CALIB 0xB0
|
||||||
|
#define BMP085_AC5_CALIB 0xB2
|
||||||
|
#define BMP085_AC6_CALIB 0xB4
|
||||||
|
#define BMP085_B1_CALIB 0xB6
|
||||||
|
#define BMP085_B2_CALIB 0xB8
|
||||||
|
#define BMP085_MB_CALIB 0xBA
|
||||||
|
#define BMP085_MC_CALIB 0xBC
|
||||||
|
#define BMP085_MD_CALIB 0xBE
|
||||||
|
#define BMP085_CALIB_TABLE_SIZE 22 /**< size in bytes */
|
||||||
|
/** @} */
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
/**
|
||||||
|
* \name BMP085 operation modes
|
||||||
|
* @{
|
||||||
|
*/
|
||||||
|
#define BMP085_MODE_ULTRA_LOW_POWER 0x00
|
||||||
|
#define BMP085_MODE_STANDARD 0x01
|
||||||
|
#define BMP085_MODE_HIGH_RES 0x02
|
||||||
|
#define BMP085_MODE_ULTRA_HIGH_RES 0x03
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
#define BMP085_DELAY_4_5MS 4700
|
||||||
|
#define BMP085_DELAY_7_5MS 7700
|
||||||
|
#define BMP085_DELAY_13_5MS 13700
|
||||||
|
#define BMP085_DELAY_25_5MS 25700
|
||||||
|
/** @} */
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
/**
|
||||||
|
* \name BMP085 return and command values
|
||||||
|
* @{
|
||||||
|
*/
|
||||||
|
#define BMP085_SUCCESS 0x00
|
||||||
|
#define BMP085_ERROR -1
|
||||||
|
|
||||||
|
#define BMP085_ACTIVE SENSORS_ACTIVE
|
||||||
|
#define BMP085_OVERSAMPLING 0x00
|
||||||
|
#define BMP085_READ_PRESSURE 0x01
|
||||||
|
#define BMP085_READ_TEMP 0x02
|
||||||
|
/** @} */
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
#define BMP085_SENSOR "BMP085 pressure and temperature sensor"
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
extern const struct sensors_sensor bmp085;
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
#endif
|
||||||
|
/* -------------------------------------------------------------------------- */
|
||||||
|
/**
|
||||||
|
* @}
|
||||||
|
* @}
|
||||||
|
*/
|
||||||
|
|
||||||
Loading…
Reference in a new issue