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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 by Tomasz Malesinski
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "system.h"
#include "kernel.h"
void timer_handler(void)
{
/* Run through the list of tick tasks */
call_tick_tasks();
TIMER0.clr = 0;
}
void tick_start(unsigned int interval_in_ms)
{
TIMER0.ctrl &= ~0x80; /* Disable the counter */
TIMER0.ctrl |= 0x40; /* Reload after counting down to zero */
TIMER0.load = 3000000 * interval_in_ms / 1000;
TIMER0.ctrl &= ~0xc; /* No prescaler */
TIMER0.clr = 1; /* Clear the interrupt request */
irq_set_int_handler(IRQ_TIMER0, timer_handler);
irq_enable_int(IRQ_TIMER0);
TIMER0.ctrl |= 0x80; /* Enable the counter */
}
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