125 lines
4 KiB
C
125 lines
4 KiB
C
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/*
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ChibiOS/HAL - Copyright (C) 2014 Uladzimir Pylinsky aka barthess
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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 hal_fsmc_sram.c
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* @brief SRAM Driver subsystem low level driver source.
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*
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* @addtogroup SRAM
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* @{
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*/
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#include "hal.h"
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#if (HAL_USE_SRAM == TRUE) || defined(__DOXYGEN__)
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#include "hal_sram_lld.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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* @brief SRAM1 driver identifier.
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*/
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#if STM32_SRAM_USE_SRAM1 || defined(__DOXYGEN__)
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SRAMDriver SRAMD1;
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#endif
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/**
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* @brief SRAM2 driver identifier.
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*/
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#if STM32_SRAM_USE_SRAM2 || defined(__DOXYGEN__)
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SRAMDriver SRAMD2;
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#endif
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/**
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* @brief SRAM3 driver identifier.
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*/
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#if STM32_SRAM_USE_SRAM3 || defined(__DOXYGEN__)
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SRAMDriver SRAMD3;
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#endif
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/**
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* @brief SRAM4 driver identifier.
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*/
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#if STM32_SRAM_USE_SRAM4 || defined(__DOXYGEN__)
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SRAMDriver SRAMD4;
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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 Configures and activates the SRAM peripheral.
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*
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* @param[in] sramp pointer to the @p SRAMDriver object
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* @param[in] cfgp pointer to the @p SRAMConfig object
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*
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* @notapi
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*/
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void sram_lld_start(SRAMDriver *sramp, const SRAMConfig *cfgp) {
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sramp->sram->BTR = cfgp->btr;
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sramp->sram->BWTR = cfgp->bwtr;
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sramp->sram->BCR = cfgp->bcr | FSMC_BCR_MBKEN;
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}
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/**
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* @brief Deactivates the SRAM peripheral.
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*
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* @param[in] sramp pointer to the @p SRAMDriver object
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*
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* @notapi
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*/
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void sram_lld_stop(SRAMDriver *sramp) {
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uint32_t mask = FSMC_BCR_MBKEN;
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#if (defined(STM32F427xx) || defined(STM32F437xx) || \
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defined(STM32F429xx) || defined(STM32F439xx) || \
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defined(STM32F745xx) || defined(STM32F746xx) || \
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defined(STM32F756xx) || defined(STM32F767xx) || \
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defined(STM32F769xx) || defined(STM32F777xx) || \
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defined(STM32F779xx))
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mask |= FSMC_BCR_CCLKEN;
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#endif
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sramp->sram->BCR &= ~mask;
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}
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#endif /* STM32_SRAM_USE_SRAM */
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/** @} */
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