leds-arch.c

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00001 /*
00002  * Copyright (c) 2009, University of Colombo School of Computing
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the Institute nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  *
00029  * This file is part of the Contiki operating system.
00030  *
00031  * @(#)$$
00032  */
00033 
00034 /**
00035  * \file
00036  *         LED architecture of the MICAz port.
00037  * \author
00038  *         Kasun Hewage <kasun.ch@gmail.com>
00039  */
00040 
00041 #include "contiki-conf.h"
00042 #include "dev/leds.h"
00043 #include <avr/io.h>
00044 
00045 
00046 /*---------------------------------------------------------------------------*/
00047 void leds_arch_init(void)
00048 {
00049   LEDS_PxDIR |= (LEDS_CONF_RED | LEDS_CONF_GREEN | LEDS_CONF_YELLOW);
00050   LEDS_PxOUT |= (LEDS_CONF_RED | LEDS_CONF_GREEN | LEDS_CONF_YELLOW);
00051 }
00052 /*---------------------------------------------------------------------------*/
00053 unsigned char leds_arch_get(void)
00054 {
00055   return ((LEDS_PxOUT & LEDS_CONF_RED) ? 0 : LEDS_RED)
00056     | ((LEDS_PxOUT & LEDS_CONF_GREEN) ? 0 : LEDS_GREEN)
00057     | ((LEDS_PxOUT & LEDS_CONF_YELLOW) ? 0 : LEDS_YELLOW);
00058 }
00059 /*---------------------------------------------------------------------------*/
00060 void leds_arch_set(unsigned char leds)
00061 {
00062   LEDS_PxOUT = (LEDS_PxOUT & ~(LEDS_CONF_RED|LEDS_CONF_GREEN|LEDS_CONF_YELLOW))
00063     | ((leds & LEDS_RED) ? 0 : LEDS_CONF_RED)
00064     | ((leds & LEDS_GREEN) ? 0 : LEDS_CONF_GREEN)
00065     | ((leds & LEDS_YELLOW) ? 0 : LEDS_CONF_YELLOW);
00066 }
00067 /*---------------------------------------------------------------------------*/

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