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Blinking LEDs

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adamdunkels 2007-03-23 00:05:52 +00:00
parent 68506272dc
commit 757a226e39
1 changed files with 66 additions and 0 deletions
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examples/sky/blink.c Normal file
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/*
* Copyright (c) 2007, Swedish Institute of Computer Science.
* 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.
*
* $Id: blink.c,v 1.1 2007/03/23 00:05:52 adamdunkels Exp $
*/
/**
* \file
* A quick program that blinks the LEDs
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "contiki.h"
#include "dev/leds.h"
/*---------------------------------------------------------------------------*/
PROCESS(blink_process, "Blink");
AUTOSTART_PROCESSES(&blink_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(blink_process, ev, data)
{
PROCESS_EXITHANDLER(goto exit;)
PROCESS_BEGIN();
while(1) {
static struct etimer et;
etimer_set(&et, CLOCK_SECOND);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
leds_on(LEDS_ALL);
etimer_set(&et, CLOCK_SECOND);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
leds_off(LEDS_ALL);
}
exit:
leds_off(LEDS_ALL);
PROCESS_END();
}
/*---------------------------------------------------------------------------*/