rockbox/firmware/drivers/led.c
2005-11-24 00:10:14 +00:00

72 lines
1.8 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Alan Korr
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include <stdbool.h>
#include "cpu.h"
#include "led.h"
#include "system.h"
#include "kernel.h"
#if CONFIG_LED == LED_REAL
void led(bool on)
{
if ( on )
#ifdef GMINI_ARCH
P2 |= 1;
else
P2 &= ~1;
#else
{
or_b(0x40, &PBDRL);
}
else
{
and_b(~0x40, &PBDRL);
}
#endif
}
#elif (CONFIG_LED == LED_VIRTUAL) || defined(HAVE_REMOTE_LCD)
static bool current;
static long last_on; /* timestamp of switching off */
void led(bool on)
{
if (current && !on) /* switching off */
{
last_on = current_tick; /* remember for off delay */
}
current = on;
}
bool led_read(int delayticks) /* read by status bar update */
{
/* reading "off" is delayed by user-supplied monoflop value */
return (current || TIME_BEFORE(current_tick, last_on+delayticks));
}
#else
void led(bool on)
{
(void)on;
}
#endif /* CONFIG_LED, HAVE_REMOTE_LCD */