62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* This is a very simple hello_world program.
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* It aims to demonstrate the co-existence of two processes:
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* One of them prints a hello world message and the other blinks the LEDs
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*
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* It is largely based on hello_world in $(CONTIKI)/examples/sensinode
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*
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* Author: George Oikonomou <G.Oikonomou@lboro.ac.uk>
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*/
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#include "contiki.h"
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#include "dev/leds.h"
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#include <stdio.h>
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/*---------------------------------------------------------------------------*/
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PROCESS(hello_world_process, "Hello world process");
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PROCESS(blink_process, "LED blink process");
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AUTOSTART_PROCESSES(&hello_world_process, &blink_process);
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/*---------------------------------------------------------------------------*/
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/* Implementation of the first process */
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PROCESS_THREAD(hello_world_process, ev, data)
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{
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static struct etimer timer;
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static int count;
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PROCESS_BEGIN();
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etimer_set(&timer, CLOCK_CONF_SECOND * 4);
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count = 0;
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while(1) {
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PROCESS_WAIT_EVENT();
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if(ev == PROCESS_EVENT_TIMER) {
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printf("Sensor says no... #%d\r\n", count);
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count++;
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etimer_reset(&timer);
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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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/* Implementation of the second process */
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PROCESS_THREAD(blink_process, ev, data)
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{
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static struct etimer timer;
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PROCESS_BEGIN();
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while(1) {
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etimer_set(&timer, CLOCK_CONF_SECOND);
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PROCESS_WAIT_EVENT_UNTIL(ev == PROCESS_EVENT_TIMER);
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printf("Blink... (state %0.2X).\r\n", leds_get());
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leds_toggle(LEDS_GREEN);
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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