examples/sensinode/clock_test.c

   1 /**
   2  * \file
   3  *         Tests related to clocks and timers
   4  * \author
   5  *         Zach Shelby <zach@sensinode.com>
   6  */
   7
   8 #include "contiki.h"
   9 #include "sys/clock.h"
  10 #include "dev/bus.h"
  11 #include "dev/leds.h"
  12 #include <stdio.h> /* For printf() */
  13 /*---------------------------------------------------------------------------*/
  14 PROCESS(clock_test_process, "Clock test process");
  15 AUTOSTART_PROCESSES(&clock_test_process);
  16 /*---------------------------------------------------------------------------*/
  17 PROCESS_THREAD(clock_test_process, ev, data)
  18 {
  19   static struct etimer et;
  20   static clock_time_t count, start_count, end_count, diff;
  21   static unsigned long sec;
  22   static u8_t i;
  23
  24   PROCESS_BEGIN();
  25
  26   printf("Clock delay test (10 x (10,000xi) cycles):\n");
  27   i = 1;
  28   while(i < 6) {
  29         start_count = clock_time();
  30         clock_delay(10000*i);
  31         end_count = clock_time();
  32         diff = end_count-start_count;
  33         printf("Delayed %u = %u ticks = ~%u ms\n", 10000*i, diff, diff*8 );
  34     i++;
  35   }
  36
  37   printf("Clock tick and etimer test (10 x 1s):\n");
  38   i = 0;
  39   while(i < 10) {
  40     etimer_set(&et, CLOCK_SECOND);
  41     PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
  42     etimer_reset(&et);
  43
  44         count = clock_time();
  45         printf("%u ticks\n", count);
  46
  47     leds_toggle(LEDS_RED);
  48     i++;
  49   }
  50
  51   printf("Clock seconds test (10 x 5s):\n");
  52   i = 0;
  53   while(i < 10) {
  54     etimer_set(&et, 5 * CLOCK_SECOND);
  55     PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
  56     etimer_reset(&et);
  57
  58         sec = clock_seconds();
  59         printf("%u seconds\n", (u16_t) sec);
  60
  61     leds_toggle(LEDS_GREEN);
  62     i++;
  63   }
  64
  65   PROCESS_END();
  66 }
  67 /*---------------------------------------------------------------------------*/