osd-contiki/examples/mb851/temperature/temp-sensor.c

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2010-10-25 15:34:28 +02:00
/*
* Copyright (c) 2010, STMicroelectronics.
* 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.
*
*/
/**
* \file
* A very simple Contiki application showing how to use the temperature
* sensor.
* \author
* Salvatore Pitrulli <salvopitru@users.sourceforge.net>
*
*/
#include "contiki.h"
#include "dev/temperature-sensor.h"
#include <stdio.h> /* For printf() */
/*---------------------------------------------------------------------------*/
PROCESS(temp_process, "Temperature process");
AUTOSTART_PROCESSES(&temp_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(temp_process, ev, data)
{
static struct etimer etimer;
PROCESS_BEGIN();
printf("Starting measuring temperature\r\n");
while(1) {
etimer_set(&etimer, CLOCK_SECOND);
PROCESS_WAIT_UNTIL(etimer_expired(&etimer));
unsigned int temp = temperature_sensor.value(0);
printf("Temp: %d.%d <20>C \r",temp/10,temp-(temp/10)*10);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/