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RIOT/tests/xtimer_msg/main.c 3.13 KB
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  /*
   * Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de>
   *               2013 INRIA
   *
   * This file is subject to the terms and conditions of the GNU Lesser
   * General Public License v2.1. See the file LICENSE in the top level
   * directory for more details.
   */
  
  /**
   * @ingroup tests
   * @{
   *
   * @file
   * @brief xtimer_msg test application
   *
   * @author      Kaspar Schleiser <kaspar@schleiser.de>
   * @author      Oliver Hahm <oliver.hahm@inria.fr>
   * @author      Christian Mehlis <mehlis@inf.fu-berlin.de>
   *
   * @}
   */
  
  #include <stdio.h>
  #include <time.h>
  
  #include "xtimer.h"
  #include "thread.h"
  #include "msg.h"
  
  char timer_stack[THREAD_STACKSIZE_MAIN];
  char timer_stack_local[THREAD_STACKSIZE_MAIN];
  
  struct timer_msg {
      xtimer_t timer;
      uint32_t interval;
      char *text;
      msg_t msg;
  };
  
  struct timer_msg msg_a = { .interval = 2*(1000000), .text = "Hello World", };
  struct timer_msg msg_b = { .interval = 5*(1000000), .text = "This is a Test" };
  
  void *timer_thread(void *arg)
  {
      (void) arg;
      timex_t now;
  
      printf("This is thread %" PRIkernel_pid "\n", thread_getpid());
  
      /* we need a queue if the second message arrives while the first is still processed */
      /* without a queue, the message would get lost */
      /* because of the way this timer works, there can be max 1 queued message */
      msg_t msgq[1];
      msg_init_queue(msgq, 1);
  
      while (1) {
          msg_t m;
          msg_receive(&m);
          struct timer_msg *tmsg = m.content.ptr;
          xtimer_now_timex(&now);
          printf("now=%" PRIu32 ":%" PRIu32 " -> every %" PRIu32 ".%" PRIu32 "s: %s\n",
                 now.seconds,
                 now.microseconds,
                 tmsg->interval / 1000000,
                 tmsg->interval % 1000000,
                 tmsg->text);
  
          tmsg->msg.type = 12345;
          tmsg->msg.content.ptr = tmsg;
          xtimer_set_msg(&tmsg->timer, tmsg->interval, &tmsg->msg, thread_getpid());
      }
  }
  
  void *timer_thread_local(void *arg)
  {
      (void) arg;
  
      printf("This is thread %" PRIkernel_pid "\n", thread_getpid());
  
      while (1) {
          msg_t m;
          msg_receive(&m);
  
          uint32_t now = xtimer_now_usec();
          int sec = now / 1000000;
          int min = sec / 60;
          int hr  = sec / 3600;
          printf("sec=%d min=%d hour=%d\n", sec, min, hr);
      }
  }
  
  int main(void)
  {
      msg_t m;
      kernel_pid_t pid = thread_create(
                    timer_stack,
                    sizeof(timer_stack),
                    THREAD_PRIORITY_MAIN - 1,
                    THREAD_CREATE_STACKTEST,
                    timer_thread,
                    NULL,
                    "timer");
  
      puts("sending 1st msg");
      m.content.ptr = &msg_a;
      msg_try_send(&m, pid);
  
      puts("sending 2nd msg");
      m.content.ptr = &msg_b;
      msg_try_send(&m, pid);
  
      kernel_pid_t pid2 = thread_create(
                     timer_stack_local,
                     sizeof(timer_stack_local),
                     THREAD_PRIORITY_MAIN - 1,
                     THREAD_CREATE_STACKTEST,
                     timer_thread_local,
                     NULL,
                     "timer local");
  
      while (1) {
          xtimer_usleep(1*1000000);
          msg_try_send(&m, pid2);
      }
  }