contiki/examples/zolertia/zoul/test-bmp085-bmp180.c

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/*
* 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.
*
*/
/*---------------------------------------------------------------------------*/
/**
* \addtogroup zoul-examples
* @{
*
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* \defgroup zoul-bmpx8x-test BMP085/BMP180 pressure and temperature sensor test
*
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* Demonstrates the use of the BMP085/BMP180 pressure and temperature sensor
* @{
*
* \file
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* Test file for the BMP085/BMP180 digital pressure and temperature sensor
*
* \author
* Antonio Lignan <alinan@zolertia.com>
*/
/*---------------------------------------------------------------------------*/
#include <stdio.h>
#include "contiki.h"
#include "dev/i2c.h"
#include "dev/leds.h"
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#include "dev/bmpx8x.h"
/*---------------------------------------------------------------------------*/
#define SENSOR_READ_INTERVAL (CLOCK_SECOND)
/*---------------------------------------------------------------------------*/
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PROCESS(remote_bmpx8x_process, "BMP085/BMP180 test process");
AUTOSTART_PROCESSES(&remote_bmpx8x_process);
/*---------------------------------------------------------------------------*/
static struct etimer et;
/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(remote_bmpx8x_process, ev, data)
{
PROCESS_BEGIN();
static uint16_t pressure;
static int16_t temperature;
/* Use Contiki's sensor macro to enable the sensor */
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SENSORS_ACTIVATE(bmpx8x);
/* And periodically poll the sensor */
while(1) {
etimer_set(&et, SENSOR_READ_INTERVAL);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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pressure = bmpx8x.value(BMPx8x_READ_PRESSURE);
temperature = bmpx8x.value(BMPx8x_READ_TEMP);
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if((pressure != BMPx8x_ERROR) && (temperature != BMPx8x_ERROR)) {
printf("Pressure = %u.%u(hPa), ", pressure / 10, pressure % 10);
printf("Temperature = %d.%u(ºC)\n", temperature / 10, temperature % 10);
} else {
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printf("Error, enable the DEBUG flag in the BMPx8x driver for info, ");
printf("or check if the sensor is properly connected\n");
PROCESS_EXIT();
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/