contiki/examples/sensinode/clock_test.c

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/**
* \file
* Tests related to clocks and timers
* \author
* Zach Shelby <zach@sensinode.com>
*/
#include "contiki.h"
#include "sys/clock.h"
#include "dev/bus.h"
#include "dev/leds.h"
#include <stdio.h> /* For printf() */
/*---------------------------------------------------------------------------*/
PROCESS(clock_test_process, "Clock test process");
AUTOSTART_PROCESSES(&clock_test_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(clock_test_process, ev, data)
{
static struct etimer et;
static clock_time_t count, start_count, end_count, diff;
static unsigned long sec;
static uint8_t i;
PROCESS_BEGIN();
printf("Clock delay test (10 x (10,000xi) cycles):\n");
i = 1;
while(i < 6) {
start_count = clock_time();
clock_delay(10000*i);
end_count = clock_time();
diff = end_count-start_count;
printf("Delayed %u = %u ticks = ~%u ms\n", 10000*i, diff, diff*8 );
i++;
}
printf("Clock tick and etimer test (10 x 1s):\n");
i = 0;
while(i < 10) {
etimer_set(&et, CLOCK_SECOND);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
etimer_reset(&et);
count = clock_time();
printf("%u ticks\n", count);
leds_toggle(LEDS_RED);
i++;
}
printf("Clock seconds test (10 x 5s):\n");
i = 0;
while(i < 10) {
etimer_set(&et, 5 * CLOCK_SECOND);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
etimer_reset(&et);
sec = clock_seconds();
printf("%u seconds\n", (uint16_t) sec);
leds_toggle(LEDS_GREEN);
i++;
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/