exercise_remotecontrol/rime/led_remote_control.c

   1 #include <contiki.h>
   2 #include <stdio.h>
   3 #include <dev/leds.h>
   4 #include <dev/button-sensor.h>
   5 #include <net/rime.h>
   6
   7 PROCESS(led_remote_control_rime, "binary LED counter via button over Rime");
   8 AUTOSTART_PROCESSES(&led_remote_control_rime);
   9
  10 void recv(struct broadcast_conn *ptr, const rimeaddr_t * sender) {
  11   char * val = (char *) packetbuf_dataptr();
  12   printf("node %d: recv from %d: %d\n", rimeaddr_node_addr, *sender, *val);
  13
  14   if((*val) & 0x01) {
  15     leds_on(LEDS_GREEN);
  16   } else {
  17     leds_off(LEDS_GREEN);
  18   }
  19   if((*val) & 0x02) {
  20     leds_on(LEDS_YELLOW);
  21   } else {
  22     leds_off(LEDS_YELLOW);
  23   }
  24
  25   printf("toggled LEDs\n");
  26 }
  27
  28 static struct broadcast_conn bc;
  29 static const struct broadcast_callbacks bccb = { recv };
  30
  31 PROCESS_THREAD(led_remote_control_rime, ev, data) {
  32   PROCESS_EXITHANDLER(broadcast_close(&bc));
  33
  34   PROCESS_BEGIN();
  35
  36   leds_init();
  37   leds_off(LEDS_ALL);
  38
  39   SENSORS_ACTIVATE(button_sensor);
  40
  41   broadcast_open(&bc, 129, &bccb);
  42
  43   static struct etimer timer;
  44   static char i;
  45   for(i = 1; 1; i++) {
  46     PROCESS_WAIT_EVENT_UNTIL(ev == sensors_event && data == &button_sensor);
  47
  48     // debounce for 250 ms
  49     etimer_set(&timer, CLOCK_SECOND * 0.25);
  50     PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&timer));
  51
  52     packetbuf_copyfrom(&i, sizeof(i));
  53     broadcast_send(&bc);
  54     printf("node %d: broadcast sent: %d\n", rimeaddr_node_addr, i);
  55   }
  56
  57   PROCESS_END();
  58 }