183 lines
4.9 KiB
C
183 lines
4.9 KiB
C
/*
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ChibiOS/HAL - Copyright (C) 2006-2014 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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Concepts and parts of this file have been contributed by Uladzimir Pylinsky
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aka barthess.
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*/
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/**
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* @file fsmc.c
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* @brief FSMC Driver subsystem low level driver source template.
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*
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* @addtogroup FSMC
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* @{
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*/
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#include "hal.h"
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#if HAL_USE_NAND || defined(__DOXYGEN__)
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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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* @brief FSMC1 driver identifier.
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*/
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#if STM32_FSMC_USE_FSMC1 || defined(__DOXYGEN__)
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FSMCDriver FSMCD1;
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#endif
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/*===========================================================================*/
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/* Driver local types. */
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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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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief Low level FSMC driver initialization.
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*
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* @notapi
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*/
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void fsmc_init(void) {
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FSMCD1.state = FSMC_STOP;
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#if STM32_NAND_USE_FSMC_NAND1
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FSMCD1.nand1 = (FSMC_NAND_TypeDef *)FSMC_Bank2_R_BASE;
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#endif
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#if STM32_NAND_USE_FSMC_NAND2
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FSMCD1.nand2 = (FSMC_NAND_TypeDef *)FSMC_Bank3_R_BASE;
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#endif
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#if STM32_USE_FSMC_PCCARD
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FSMCD1.pccard = (FSMC_PCCARD_TypeDef *)FSMC_Bank4_R_BASE;
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#endif
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}
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/**
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* @brief Configures and activates the FSMC peripheral.
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*
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* @param[in] fsmcp pointer to the @p FSMCDriver object
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*
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* @notapi
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*/
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void fsmc_start(FSMCDriver *fsmcp) {
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osalDbgAssert((fsmcp->state == FSMC_STOP) || (fsmcp->state == FSMC_READY),
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"invalid state");
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if (fsmcp->state == FSMC_STOP) {
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/* Enables the peripheral.*/
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#if STM32_FSMC_USE_FSMC1
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if (&FSMCD1 == fsmcp) {
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rccResetFSMC();
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rccEnableFSMC(FALSE);
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#if STM32_NAND_USE_FSMC_INT
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nvicEnableVector(FSMC_IRQn, STM32_FSMC_FSMC1_IRQ_PRIORITY);
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#endif
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}
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#endif /* STM32_FSMC_USE_FSMC1 */
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fsmcp->state = FSMC_READY;
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}
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}
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/**
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* @brief Deactivates the FSMC peripheral.
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*
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* @param[in] emcp pointer to the @p FSMCDriver object
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*
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* @notapi
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*/
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void fsmc_stop(FSMCDriver *fsmcp) {
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if (fsmcp->state == FSMC_READY) {
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/* Resets the peripheral.*/
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rccResetFSMC();
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/* Disables the peripheral.*/
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#if STM32_FSMC_USE_FSMC1
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if (&FSMCD1 == fsmcp) {
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#if STM32_NAND_USE_FSMC_INT
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nvicDisableVector(FSMC_IRQn);
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#endif
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rccDisableFSMC(FALSE);
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}
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#endif /* PLATFORM_STM32_USE_FSMC1 */
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fsmcp->state = FSMC_STOP;
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}
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}
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#if STM32_NAND_USE_FSMC_INT
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/**
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* @brief Serve common interrupt.
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*
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* @notapi
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*/
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void fsmc_serve_interrupt(void) {
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osalSysHalt("Unrealized");
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}
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/**
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* @brief FSMC shared interrupt handler.
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*
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* @notapi
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*/
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CH_IRQ_HANDLER(FSMC_IRQHandler) {
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osalSysHalt("This functionality untested");
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CH_IRQ_PROLOGUE();
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#if STM32_NAND_USE_FSMC_NAND1
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if (FSMCD1.nand1->SR & FSMC_SR_ISR_MASK){
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NANDD1.isr_handler(&NANDD1, FSMCD1.nand1->SR);
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}
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#endif
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#if STM32_NAND_USE_FSMC_NAND2
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if (FSMCD1.nand2->SR & FSMC_SR_ISR_MASK){
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NANDD2.isr_handler(&NANDD2, FSMCD1.nand2->SR);
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}
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#endif
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CH_IRQ_EPILOGUE();
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}
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#endif /* STM32_FSMC_USE_INT */
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#endif /* HAL_USE_FSMC */
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/** @} */
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