124 lines
3.8 KiB
C
124 lines
3.8 KiB
C
/*
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* Copyright (c) 2005, Swedish Institute of Computer Science
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* @(#)$Id: leds.c,v 1.7 2009/02/24 21:30:20 adamdunkels Exp $
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*/
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#include "dev/leds.h"
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#include "sys/clock.h"
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#include "sys/energest.h"
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static unsigned char leds, invert;
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/*---------------------------------------------------------------------------*/
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static void
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show_leds(unsigned char changed)
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{
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if(changed & LEDS_GREEN) {
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/* Green did change */
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if((invert ^ leds) & LEDS_GREEN) {
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ENERGEST_ON(ENERGEST_TYPE_LED_GREEN);
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} else {
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ENERGEST_OFF(ENERGEST_TYPE_LED_GREEN);
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}
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}
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if(changed & LEDS_YELLOW) {
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if((invert ^ leds) & LEDS_YELLOW) {
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ENERGEST_ON(ENERGEST_TYPE_LED_YELLOW);
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} else {
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ENERGEST_OFF(ENERGEST_TYPE_LED_YELLOW);
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}
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}
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if(changed & LEDS_RED) {
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if((invert ^ leds) & LEDS_RED) {
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ENERGEST_ON(ENERGEST_TYPE_LED_RED);
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} else {
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ENERGEST_OFF(ENERGEST_TYPE_LED_RED);
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}
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}
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leds_arch_set(leds ^ invert);
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}
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/*---------------------------------------------------------------------------*/
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void
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leds_init(void)
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{
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leds_arch_init();
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leds = invert = 0;
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}
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/*---------------------------------------------------------------------------*/
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void
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leds_blink(void)
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{
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/* Blink all leds. */
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unsigned char inv;
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inv = ~(leds ^ invert);
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leds_invert(inv);
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clock_delay(400);
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leds_invert(inv);
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}
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/*---------------------------------------------------------------------------*/
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unsigned char
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leds_get(void) {
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return leds_arch_get();
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}
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/*---------------------------------------------------------------------------*/
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void
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leds_on(unsigned char ledv)
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{
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unsigned char changed;
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changed = (~leds) & ledv;
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leds |= ledv;
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show_leds(changed);
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}
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/*---------------------------------------------------------------------------*/
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void
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leds_off(unsigned char ledv)
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{
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unsigned char changed;
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changed = leds & ledv;
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leds &= ~ledv;
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show_leds(changed);
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}
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/*---------------------------------------------------------------------------*/
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void
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leds_toggle(unsigned char ledv)
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{
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leds_invert(ledv);
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}
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/*---------------------------------------------------------------------------*/
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/* invert the invert register using the leds parameter */
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void
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leds_invert(unsigned char ledv) {
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invert = invert ^ ledv;
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show_leds(ledv);
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}
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/*---------------------------------------------------------------------------*/
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