/*
 *  Copyright (c) 2000-2002 The Regents of the University  of California.  
 *  and Copyright (c) 2002 Intel Corporation 
 *  All rights reserved.
 *
 * Implementation for Blink application.  Toggle the red LED when the
 * clock fires.
 */
module BlinkM {
  provides interface StdControl;
  uses interface Clock;
  uses interface Leds;
}
implementation {
  bool state; /* the state of the red LED (on or off)   */

  /* Initialize the component.
   * @return Always returns SUCCESS */
  command result_t StdControl.init() {
    state = FALSE;
    call Leds.init();
    return SUCCESS;
  }

  /* Start things up.  This just sets the rate for the clock component.
   * @return Always returns SUCCESS */
  command result_t StdControl.start() {
    return call Clock.setRate(TOS_I1PS, TOS_S1PS);
  }

  /* Halt execution of the application.
   * This just disables the clock component.
   * @return Always returns SUCCESS */
  command result_t StdControl.stop() {
    return call Clock.setRate(TOS_I0PS, TOS_S0PS);
  }

  /* Toggle the red LED in response to the Clock.fire event.  
   * @return Always returns SUCCESS */
  event result_t Clock.fire() {
    state = !state;
    if (state) {
      call Leds.redOn();
    } else {
      call Leds.redOff();
    }

    return SUCCESS;
  }
}