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/*
ChibiOS/HAL - Copyright (C) 2014 Uladzimir Pylinsky aka barthess
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* @file hal_fsmc.c
* @brief FSMC Driver subsystem low level driver source template.
*
* @addtogroup FSMC
* @{
*/
#include "hal.h"
#include "hal_fsmc.h"
#if (HAL_USE_FSMC == TRUE) || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/**
* @brief FSMC1 driver identifier.
*/
#if STM32_FSMC_USE_FSMC1 || defined(__DOXYGEN__)
FSMCDriver FSMCD1;
#endif
/*===========================================================================*/
/* Driver local types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Low level FSMC driver initialization.
*
* @notapi
*/
void fsmc_init(void) {
if (FSMCD1.state == FSMC_UNINIT) {
FSMCD1.state = FSMC_STOP;
#if STM32_SRAM_USE_FSMC_SRAM1
FSMCD1.sram1 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE);
#endif
#if STM32_SRAM_USE_FSMC_SRAM2
FSMCD1.sram2 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE + 8);
#endif
#if STM32_SRAM_USE_FSMC_SRAM3
FSMCD1.sram3 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE + 8 * 2);
#endif
#if STM32_SRAM_USE_FSMC_SRAM4
FSMCD1.sram4 = (FSMC_SRAM_NOR_TypeDef *)(FSMC_Bank1_R_BASE + 8 * 3);
#endif
#if STM32_NAND_USE_FSMC_NAND1
FSMCD1.nand1 = (FSMC_NAND_TypeDef *)FSMC_Bank2_R_BASE;
#endif
#if STM32_NAND_USE_FSMC_NAND2
FSMCD1.nand2 = (FSMC_NAND_TypeDef *)FSMC_Bank3_R_BASE;
#endif
#if (defined(STM32F427xx) || defined(STM32F437xx) || \
defined(STM32F429xx) || defined(STM32F439xx) || \
defined(STM32F745xx) || defined(STM32F746xx) || \
defined(STM32F756xx) || defined(STM32F767xx) || \
defined(STM32F769xx) || defined(STM32F777xx) || \
defined(STM32F779xx))
#if STM32_USE_FSMC_SDRAM
FSMCD1.sdram = (FSMC_SDRAM_TypeDef *)FSMC_Bank5_6_R_BASE;
#endif
#endif
}
}
/**
* @brief Configures and activates the FSMC peripheral.
*
* @param[in] fsmcp pointer to the @p FSMCDriver object
*
* @notapi
*/
void fsmc_start(FSMCDriver *fsmcp) {
osalDbgAssert((fsmcp->state == FSMC_STOP) || (fsmcp->state == FSMC_READY),
"invalid state");
if (fsmcp->state == FSMC_STOP) {
/* Enables the peripheral.*/
#if STM32_FSMC_USE_FSMC1
if (&FSMCD1 == fsmcp) {
#ifdef rccResetFSMC
rccResetFSMC();
#endif
rccEnableFSMC(FALSE);
#if HAL_USE_NAND
nvicEnableVector(STM32_FSMC_NUMBER, STM32_FSMC_FSMC1_IRQ_PRIORITY);
#endif
}
#endif /* STM32_FSMC_USE_FSMC1 */
fsmcp->state = FSMC_READY;
}
}
/**
* @brief Deactivates the FSMC peripheral.
*
* @param[in] emcp pointer to the @p FSMCDriver object
*
* @notapi
*/
void fsmc_stop(FSMCDriver *fsmcp) {
if (fsmcp->state == FSMC_READY) {
/* Resets the peripheral.*/
#ifdef rccResetFSMC
rccResetFSMC();
#endif
/* Disables the peripheral.*/
#if STM32_FSMC_USE_FSMC1
if (&FSMCD1 == fsmcp) {
#if HAL_USE_NAND
nvicDisableVector(STM32_FSMC_NUMBER);
#endif
rccDisableFSMC();
}
#endif /* STM32_FSMC_USE_FSMC1 */
fsmcp->state = FSMC_STOP;
}
}
/**
* @brief FSMC shared interrupt handler.
*
* @notapi
*/
CH_IRQ_HANDLER(STM32_FSMC_HANDLER) {
CH_IRQ_PROLOGUE();
#if STM32_NAND_USE_FSMC_NAND1
if (FSMCD1.nand1->SR & FSMC_SR_ISR_MASK) {
NANDD1.isr_handler(&NANDD1);
}
#endif
#if STM32_NAND_USE_FSMC_NAND2
if (FSMCD1.nand2->SR & FSMC_SR_ISR_MASK) {
NANDD2.isr_handler(&NANDD2);
}
#endif
CH_IRQ_EPILOGUE();
}
#endif /* HAL_USE_FSMC */
/** @} */
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