4bf4d2bb55
* Make current_tick increase * Convert button driver into SADC driver * Make touchscreen handling work better (still needs good calibration routine) git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18240 a1c6a512-1295-4272-9138-f99709370657
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2008 by Maurus Cuelenaere
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "system.h"
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#include "kernel.h"
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#include "jz4740.h"
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extern void (*tick_funcs[MAX_NUM_TICK_TASKS])(void);
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#define USE_RTC_CLOCK 0
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void tick_start(unsigned int interval_in_ms)
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{
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unsigned int tps = interval_in_ms;
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unsigned int latch;
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__cpm_start_tcu();
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__tcu_stop_counter(0);
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__tcu_disable_pwm_output(0);
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__tcu_mask_half_match_irq(0);
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__tcu_unmask_full_match_irq(0);
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#if USE_RTC_CLOCK
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__tcu_select_rtcclk(0);
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__tcu_select_clk_div1(0);
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latch = (__cpm_get_rtcclk() + (tps>>1)) / tps;
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#else
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__tcu_select_extalclk(0);
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__tcu_select_clk_div4(0);
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latch = (JZ_EXTAL / 4 + (tps>>1)) / tps;
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#endif
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REG_TCU_TCNT(0) = 0;
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REG_TCU_TDFR(0) = latch;
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REG_TCU_TDHR(0) = latch;
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//REG_TCU_TDHR(0) = 0;
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__tcu_clear_full_match_flag(0);
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__tcu_start_counter(0);
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system_enable_irq(IRQ_TCU0);
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}
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/* Interrupt handler */
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void TCU0(void)
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{
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int i;
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/* Run through the list of tick tasks */
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for(i = 0; i < MAX_NUM_TICK_TASKS; i++)
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{
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if(tick_funcs[i])
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tick_funcs[i]();
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}
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current_tick++;
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}
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