mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-08-29 13:29:09 +00:00
136 lines
4.1 KiB
C
136 lines
4.1 KiB
C
/*
|
||
* Copyright (c) 2005, Swedish Institute of Computer Science
|
||
* 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.
|
||
*
|
||
* @(#)$Id: leds.c,v 1.1 2006/06/17 22:41:16 adamdunkels Exp $
|
||
*/
|
||
|
||
#include "dev/leds.h"
|
||
#include "sys/clock.h"
|
||
|
||
static struct {
|
||
char green:4, yellow:4, red:4;
|
||
} leds;
|
||
|
||
static struct {
|
||
char green:2, yellow:2, red:2; /* These bit fields should really be
|
||
only one bit wide, but that
|
||
crashed gcc... */
|
||
} invert;
|
||
|
||
/*---------------------------------------------------------------------------*/
|
||
static void
|
||
show_leds(void)
|
||
{
|
||
leds_arch_set((((leds.green > 0) ^ invert.green) ? LEDS_GREEN : 0) |
|
||
(((leds.yellow > 0) ^ invert.yellow) ? LEDS_YELLOW : 0) |
|
||
(((leds.red > 0) ^ invert.red) ? LEDS_RED : 0));
|
||
}
|
||
/*---------------------------------------------------------------------------*/
|
||
void
|
||
leds_init(void)
|
||
{
|
||
leds.green = leds.red = leds.yellow = 0;
|
||
invert.green = invert.red = invert.yellow = 0;
|
||
leds_arch_init();
|
||
|
||
show_leds();
|
||
}
|
||
/*---------------------------------------------------------------------------*/
|
||
void
|
||
leds_blink(void)
|
||
{
|
||
/* Blink all leds. */
|
||
leds_arch_set(LEDS_ALL);
|
||
|
||
clock_delay(400);
|
||
|
||
show_leds();
|
||
}
|
||
/*---------------------------------------------------------------------------*/
|
||
unsigned char
|
||
leds_get(void) {
|
||
return leds_arch_get();
|
||
}
|
||
/*---------------------------------------------------------------------------*/
|
||
void
|
||
leds_on(unsigned char l)
|
||
{
|
||
if((l & LEDS_GREEN) && leds.green < 15) {
|
||
++leds.green;
|
||
}
|
||
if((l & LEDS_YELLOW) && leds.yellow < 15) {
|
||
++leds.yellow;
|
||
}
|
||
if((l & LEDS_RED) && leds.red < 15) {
|
||
++leds.red;
|
||
}
|
||
show_leds();
|
||
}
|
||
/*---------------------------------------------------------------------------*/
|
||
void
|
||
leds_off(unsigned char l)
|
||
{
|
||
if((l & LEDS_GREEN) && leds.green > 0) {
|
||
--leds.green;
|
||
}
|
||
if((l & LEDS_YELLOW) && leds.yellow > 0) {
|
||
--leds.yellow;
|
||
}
|
||
if((l & LEDS_RED) && leds.red > 0) {
|
||
--leds.red;
|
||
}
|
||
show_leds();
|
||
}
|
||
/*---------------------------------------------------------------------------*/
|
||
void
|
||
leds_toggle(unsigned char leds)
|
||
{
|
||
leds_invert(leds);
|
||
}
|
||
|
||
/* invert the <20>nvert register using the leds parameter */
|
||
void leds_invert(unsigned char l) {
|
||
if(l & LEDS_GREEN) {
|
||
invert.green = 1 - invert.green;
|
||
}
|
||
if(l & LEDS_YELLOW) {
|
||
invert.yellow = 1 - invert.yellow;
|
||
}
|
||
if(l & LEDS_RED) {
|
||
invert.red = 1 - invert.red;
|
||
}
|
||
show_leds();
|
||
}
|
||
|
||
/*---------------------------------------------------------------------------*/
|
||
void leds_green(int o) { o?leds_on(LEDS_GREEN):leds_off(LEDS_GREEN); }
|
||
void leds_yellow(int o) { o?leds_on(LEDS_YELLOW):leds_off(LEDS_YELLOW); }
|
||
void leds_red(int o) { o?leds_on(LEDS_RED):leds_off(LEDS_RED); }
|