leds-arch.c

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/*
 * Copyright (c) 2009, University of Colombo School of Computing
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file is part of the Contiki operating system.
 *
 * @(#)$$
 */

/**
 * \file
 *         LED architecture of the MICAz port.
 * \author
 *         Kasun Hewage <kasun.ch@gmail.com>
 */

#include "contiki-conf.h"
#include "dev/leds.h"
#include <avr/io.h>


/*---------------------------------------------------------------------------*/
void leds_arch_init(void)
{
  LEDS_PxDIR |= (LEDS_CONF_RED | LEDS_CONF_GREEN | LEDS_CONF_YELLOW);
  LEDS_PxOUT |= (LEDS_CONF_RED | LEDS_CONF_GREEN | LEDS_CONF_YELLOW);
}
/*---------------------------------------------------------------------------*/
unsigned char leds_arch_get(void)
{
  return ((LEDS_PxOUT & LEDS_CONF_RED) ? 0 : LEDS_RED)
    | ((LEDS_PxOUT & LEDS_CONF_GREEN) ? 0 : LEDS_GREEN)
    | ((LEDS_PxOUT & LEDS_CONF_YELLOW) ? 0 : LEDS_YELLOW);
}
/*---------------------------------------------------------------------------*/
void leds_arch_set(unsigned char leds)
{
  LEDS_PxOUT = (LEDS_PxOUT & ~(LEDS_CONF_RED|LEDS_CONF_GREEN|LEDS_CONF_YELLOW))
    | ((leds & LEDS_RED) ? 0 : LEDS_CONF_RED)
    | ((leds & LEDS_GREEN) ? 0 : LEDS_CONF_GREEN)
    | ((leds & LEDS_YELLOW) ? 0 : LEDS_CONF_YELLOW);
}
/*---------------------------------------------------------------------------*/