195 lines
4.7 KiB
C
195 lines
4.7 KiB
C
/*
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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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/**
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* @file LPC8xx/ext_lld_isr.c
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* @brief LPC8xx EXT subsystem low level driver ISR code.
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*
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* @addtogroup EXT
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* @{
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*/
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#include "ch.h"
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#include "hal.h"
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#if HAL_USE_EXT || defined(__DOXYGEN__)
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#include "ext_lld_isr.h"
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/*===========================================================================*/
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/* Driver local definitions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local variables and types. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver interrupt handlers. */
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/*===========================================================================*/
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static void ext_lld_interrupt( uint32_t n ) {
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uint32_t reason;
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reason = ((LPC_PIN_INT->RISE)>> n ) & 0x01;
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reason |= ((LPC_PIN_INT->FALL)>>(n-1)) & 0x02;
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LPC_PIN_INT->RISE = (1<<n);
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LPC_PIN_INT->FALL = (1<<n);
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LPC_PIN_INT->IST = (1<<n);
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EXTD1.config->channels[n].cb(&EXTD1, n, reason);
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}
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/**
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* @brief EXT[0] interrupt handler.
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*
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* @isr
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*/
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CH_IRQ_HANDLER(VectorA0) {
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CH_IRQ_PROLOGUE();
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ext_lld_interrupt(0);
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CH_IRQ_EPILOGUE();
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}
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/**
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* @brief EXT[1] interrupt handler.
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*
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* @isr
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*/
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CH_IRQ_HANDLER(VectorA4) {
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CH_IRQ_PROLOGUE();
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ext_lld_interrupt(1);
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CH_IRQ_EPILOGUE();
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}
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/**
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* @brief EXT[2] interrupt handler.
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*
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* @isr
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*/
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CH_IRQ_HANDLER(VectorA8) {
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CH_IRQ_PROLOGUE();
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ext_lld_interrupt(2);
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CH_IRQ_EPILOGUE();
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}
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/**
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* @brief EXT[3] interrupt handler.
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*
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* @isr
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*/
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CH_IRQ_HANDLER(VectorAC) {
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CH_IRQ_PROLOGUE();
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ext_lld_interrupt(3);
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CH_IRQ_EPILOGUE();
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}
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/**
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* @brief EXT[4] interrupt handler.
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*
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* @isr
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*/
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CH_IRQ_HANDLER(VectorB0) {
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CH_IRQ_PROLOGUE();
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ext_lld_interrupt(4);
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CH_IRQ_EPILOGUE();
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}
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/**
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* @brief EXT[5] interrupt handler.
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*
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* @isr
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*/
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CH_IRQ_HANDLER(VectorB4) {
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CH_IRQ_PROLOGUE();
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ext_lld_interrupt(5);
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CH_IRQ_EPILOGUE();
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}
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/**
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* @brief EXT[6] interrupt handler.
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*
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* @isr
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*/
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CH_IRQ_HANDLER(VectorB8) {
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CH_IRQ_PROLOGUE();
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ext_lld_interrupt(6);
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CH_IRQ_EPILOGUE();
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}
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/**
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* @brief EXT[7] interrupt handler.
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*
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* @isr
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*/
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CH_IRQ_HANDLER(VectorBC) {
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CH_IRQ_PROLOGUE();
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ext_lld_interrupt(7);
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CH_IRQ_EPILOGUE();
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}
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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static const uint8_t LPC8xx_EXT_EXTIn_IRQ_PRIORITY[] =
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{ LPC8xx_EXT_EXTI0_IRQ_PRIORITY,
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LPC8xx_EXT_EXTI1_IRQ_PRIORITY,
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LPC8xx_EXT_EXTI2_IRQ_PRIORITY,
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LPC8xx_EXT_EXTI3_IRQ_PRIORITY,
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LPC8xx_EXT_EXTI4_IRQ_PRIORITY,
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LPC8xx_EXT_EXTI5_IRQ_PRIORITY,
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LPC8xx_EXT_EXTI6_IRQ_PRIORITY,
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LPC8xx_EXT_EXTI7_IRQ_PRIORITY };
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/**
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* @brief Enables EXTI IRQ sources.
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*
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* @notapi
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*/
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void ext_lld_exti_irq_enable( uint32_t exti_n ) {
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nvicEnableVector(PININT0_IRQn + exti_n,
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CORTEX_PRIORITY_MASK(LPC8xx_EXT_EXTIn_IRQ_PRIORITY[exti_n]));
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}
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/**
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* @brief Disables EXTI IRQ sources.
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*
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* @notapi
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*/
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void ext_lld_exti_irq_disable( uint32_t exti_n ) {
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nvicDisableVector(PININT0_IRQn + exti_n);
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}
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#endif /* HAL_USE_EXT */
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/** @} */
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