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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ch.h"
#include "hal.h"
#define VAL_TC0_PRESCALER 0
/**
* @brief PAL setup.
* @details Digital I/O ports static configuration as defined in @p board.h.
* This variable is used by the HAL when initializing the PAL driver.
*/
#if HAL_USE_PAL || defined(__DOXYGEN__)
const PALConfig pal_default_config =
{
VAL_PINSEL0,
VAL_PINSEL1,
VAL_PINSEL2,
{VAL_FIO0PIN, VAL_FIO0DIR},
{VAL_FIO1PIN, VAL_FIO1DIR}
};
#endif
/*
* Timer 0 IRQ handling here.
*/
static CH_IRQ_HANDLER(T0IrqHandler) {
CH_IRQ_PROLOGUE();
T0IR = 1; /* Clear interrupt on match MR0. */
chSysLockFromIsr();
chSysTimerHandlerI();
chSysUnlockFromIsr();
VICVectAddr = 0;
CH_IRQ_EPILOGUE();
}
/*
* Early initialization code.
* This initialization must be performed just after stack setup and before
* any other initialization.
*/
void __early_init(void) {
lpc214x_clock_init();
}
/*
* Board-specific initialization code.
*/
void boardInit(void) {
/*
* System Timer initialization, 1ms intervals.
*/
SetVICVector(T0IrqHandler, 0, SOURCE_Timer0);
VICIntEnable = INTMASK(SOURCE_Timer0);
TC *timer = T0Base;
timer->TC_PR = VAL_TC0_PRESCALER;
timer->TC_MR0 = (PCLK / CH_FREQUENCY) / (VAL_TC0_PRESCALER + 1);
timer->TC_MCR = 3; /* Interrupt and clear TC on match MR0. */
timer->TC_TCR = 2; /* Reset counter and prescaler. */
timer->TC_TCR = 1; /* Timer enabled. */
}
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