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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 by Karl Kurbjun
*
* 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 "system.h"
#include "kernel.h"
#include "timer.h"
#include "thread.h"
extern void (*tick_funcs[MAX_NUM_TICK_TASKS])(void);
void tick_start(unsigned int interval_in_ms)
{
/* TODO: set up TIMER1 clock settings
IO_CLK_MOD2 &= ~CLK_MOD2_TMR1; //disable TIMER1 clock
IO_CLK_SEL0 |= (1 << 2); //set TIMER1 clock to PLLIN*/
IO_CLK_MOD2 |= CLK_MOD2_TMR1; //enable TIMER1 clock!!!!!!!!!
IO_TIMER1_TMMD = CONFIG_TIMER1_TMMD_STOP;
/* Setup the Prescalar (Divide by 10)
* Based on linux/include/asm-arm/arch-integrator/timex.h
*/
IO_TIMER1_TMPRSCL = 0x0009;
/* Setup the Divisor */
IO_TIMER1_TMDIV = (TIMER_FREQ / (10*1000))*interval_in_ms - 1;
/* Turn Timer1 to Free Run mode */
IO_TIMER1_TMMD = CONFIG_TIMER1_TMMD_FREE_RUN;
/* Enable the interrupt */
IO_INTC_EINT0 |= INTR_EINT0_TMR1;
}
void TIMER1(void)
{
IO_INTC_IRQ0 = INTR_IRQ0_TMR1;
int i;
/* Run through the list of tick tasks */
for(i = 0; i < MAX_NUM_TICK_TASKS; i++)
{
if(tick_funcs[i])
{
tick_funcs[i]();
}
}
current_tick++;
}
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