96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "ch.h"
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#include "hal.h"
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#define VAL_TC0_PRESCALER 0
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/**
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* @brief PAL setup.
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* @details Digital I/O ports static configuration as defined in @p board.h.
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* This variable is used by the HAL when initializing the PAL driver.
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*/
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#if HAL_USE_PAL || defined(__DOXYGEN__)
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const PALConfig pal_default_config =
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{
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VAL_PINSEL0,
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VAL_PINSEL1,
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VAL_PINSEL2,
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{VAL_FIO0PIN, VAL_FIO0DIR},
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{VAL_FIO1PIN, VAL_FIO1DIR}
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};
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#endif
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/*
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* Timer 0 IRQ handling here.
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*/
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static CH_IRQ_HANDLER(T0IrqHandler) {
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CH_IRQ_PROLOGUE();
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T0IR = 1; /* Clear interrupt on match MR0. */
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chSysLockFromIsr();
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chSysTimerHandlerI();
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chSysUnlockFromIsr();
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VICVectAddr = 0;
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CH_IRQ_EPILOGUE();
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}
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/*
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* Early initialization code.
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* This initialization must be performed just after stack setup and before
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* any other initialization.
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*/
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void __early_init(void) {
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lpc214x_clock_init();
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}
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#if HAL_USE_MMC_SPI
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/* Board-related functions related to the MMC_SPI driver.*/
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bool_t mmc_lld_is_card_inserted(MMCDriver *mmcp) {
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(void)mmcp;
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return !palReadPad(IOPORT2, PB_CP1);
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}
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bool_t mmc_lld_is_write_protected(MMCDriver *mmcp) {
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(void)mmcp;
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return palReadPad(IOPORT2, PB_WP1);
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}
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#endif
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/*
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* Board-specific initialization code.
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*/
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void boardInit(void) {
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/*
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* System Timer initialization, 1ms intervals.
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*/
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SetVICVector(T0IrqHandler, 0, SOURCE_Timer0);
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VICIntEnable = INTMASK(SOURCE_Timer0);
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TC *timer = T0Base;
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timer->TC_PR = VAL_TC0_PRESCALER;
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timer->TC_MR0 = (PCLK / CH_FREQUENCY) / (VAL_TC0_PRESCALER + 1);
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timer->TC_MCR = 3; /* Interrupt and clear TC on match MR0. */
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timer->TC_TCR = 2; /* Reset counter and prescaler. */
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timer->TC_TCR = 1; /* Timer enabled. */
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}
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