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/*
ChibiOS - Copyright (C) 2006..2017 Giovanni Di Sirio
Copyright (C) 2017 Fabien Poussin (fabien.poussin (at) google's mail)
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in sramliance 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_sram.c
* @brief SRAM Driver code.
*
* @addtogroup SRAM
* @{
*/
#include "hal.h"
#if HAL_USE_SRAM || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
#include "hal_sram_lld.h"
/**
* @brief SRAM Driver initialization.
* @note This function is implicitly invoked by @p halInit(), there is
* no need to explicitly initialize the driver.
*
* @init
*/
void sramInit(void) {
fsmcInit();
#if STM32_SRAM_USE_SRAM1
SRAMD1.sram = FSMCD1.sram1;
SRAMD1.state = SRAM_STOP;
sramObjectInit(&SRAMD1);
#endif /* STM32_SRAM_USE_SRAM1 */
#if STM32_SRAM_USE_SRAM2
SRAMD2.sram = FSMCD1.sram2;
SRAMD2.state = SRAM_STOP;
sramObjectInit(&SRAMD2);
#endif /* STM32_SRAM_USE_SRAM2 */
#if STM32_SRAM_USE_SRAM3
SRAMD3.sram = FSMCD1.sram3;
SRAMD3.state = SRAM_STOP;
sramObjectInit(&SRAMD3);
#endif /* STM32_SRAM_USE_SRAM3 */
#if STM32_SRAM_USE_SRAM4
SRAMD4.sram = FSMCD1.sram4;
SRAMD4.state = SRAM_STOP;
sramObjectInit(&SRAMD4);
#endif /* STM32_SRAM_USE_SRAM4 */
}
/**
* @brief Initializes the standard part of a @p SRAMDriver structure.
*
* @param[out] sramp pointer to the @p SRAMDriver object
*
* @init
*/
void sramObjectInit(SRAMDriver *sramp) {
sramp->state = SRAM_STOP;
}
/**
* @brief Configures and activates the SRAM peripheral.
*
* @param[in] sramp pointer to the @p SRAMDriver object
* @param[in] config pointer to the @p SRAMConfig object
*
* @api
*/
void sramStart(SRAMDriver *sramp, const SRAMConfig *config) {
osalDbgCheck((sramp != NULL) && (config != NULL));
if (FSMCD1.state == FSMC_STOP)
fsmcStart(&FSMCD1);
osalSysLock();
osalDbgAssert((sramp->state == SRAM_STOP) || (sramp->state == SRAM_READY),
"invalid state");
sram_lld_start(sramp, config);
sramp->state = SRAM_READY;
osalSysUnlock();
}
/**
* @brief Deactivates the SRAM peripheral.
*
* @param[in] sramp pointer to the @p SRAMDriver object
*
* @api
*/
void sramStop(SRAMDriver *sramp) {
osalDbgCheck(sramp != NULL);
osalSysLock();
osalDbgAssert((sramp->state == SRAM_STOP) || (sramp->state == SRAM_READY),
"invalid state");
sram_lld_stop(sramp);
sramp->state = SRAM_STOP;
osalSysUnlock();
}
#endif /* HAL_USE_SRAM */
/** @} */
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