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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_sram.h
* @brief SRAM Driver subsystem low level driver header.
*
* @addtogroup SRAM
* @{
*/
#ifndef SRAM_H_
#define SRAM_H_
#if (HAL_USE_FSMC_SRAM == TRUE) || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @name Configuration options
* @{
*/
/**
* @brief SRAM driver enable switch.
* @details If set to @p TRUE the support for SRAM1 is included.
*/
#if !defined(STM32_SRAM_USE_FSMC_SRAM1) || defined(__DOXYGEN__)
#define STM32_SRAM_USE_FSMC_SRAM1 FALSE
#endif
/**
* @brief SRAM driver enable switch.
* @details If set to @p TRUE the support for SRAM2 is included.
*/
#if !defined(STM32_SRAM_USE_FSMC_SRAM2) || defined(__DOXYGEN__)
#define STM32_SRAM_USE_FSMC_SRAM2 FALSE
#endif
/**
* @brief SRAM driver enable switch.
* @details If set to @p TRUE the support for SRAM3 is included.
*/
#if !defined(STM32_SRAM_USE_FSMC_SRAM3) || defined(__DOXYGEN__)
#define STM32_SRAM_USE_FSMC_SRAM3 FALSE
#endif
/**
* @brief SRAM driver enable switch.
* @details If set to @p TRUE the support for SRAM4 is included.
*/
#if !defined(STM32_SRAM_USE_FSMC_SRAM4) || defined(__DOXYGEN__)
#define STM32_SRAM_USE_FSMC_SRAM4 FALSE
#endif
/** @} */
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
#if !STM32_SRAM_USE_FSMC_SRAM1 && !STM32_SRAM_USE_FSMC_SRAM2 && \
!STM32_SRAM_USE_FSMC_SRAM3 && !STM32_SRAM_USE_FSMC_SRAM4
#error "SRAM driver activated but no SRAM peripheral assigned"
#endif
#if (STM32_SRAM_USE_FSMC_SRAM1 || STM32_SRAM_USE_FSMC_SRAM2 || \
STM32_SRAM_USE_FSMC_SRAM3 || STM32_SRAM_USE_FSMC_SRAM4) && !STM32_HAS_FSMC
#error "FSMC not present in the selected device"
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Driver state machine possible states.
*/
typedef enum {
SRAM_UNINIT = 0, /**< Not initialized. */
SRAM_STOP = 1, /**< Stopped. */
SRAM_READY = 2, /**< Ready. */
} sramstate_t;
/**
* @brief Type of a structure representing an NAND driver.
*/
typedef struct SRAMDriver SRAMDriver;
/**
* @brief Driver configuration structure.
* @note It could be empty on some architectures.
* @note Some bits in BCR register will be forced by driver.
*/
typedef struct {
uint32_t bcr;
uint32_t btr;
uint32_t bwtr;
} SRAMConfig;
/**
* @brief Structure representing an NAND driver.
*/
struct SRAMDriver {
/**
* @brief Driver state.
*/
sramstate_t state;
/**
* @brief Pointer to the FSMC SRAM registers block.
*/
FSMC_SRAM_NOR_TypeDef *sram;
};
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#if STM32_SRAM_USE_FSMC_SRAM1 && !defined(__DOXYGEN__)
extern SRAMDriver SRAMD1;
#endif
#if STM32_SRAM_USE_FSMC_SRAM2 && !defined(__DOXYGEN__)
extern SRAMDriver SRAMD2;
#endif
#if STM32_SRAM_USE_FSMC_SRAM3 && !defined(__DOXYGEN__)
extern SRAMDriver SRAMD3;
#endif
#if STM32_SRAM_USE_FSMC_SRAM4 && !defined(__DOXYGEN__)
extern SRAMDriver SRAMD4;
#endif
#ifdef __cplusplus
extern "C" {
#endif
void fsmcSramInit(void);
void fsmcSramStart(SRAMDriver *sramp, const SRAMConfig *cfgp);
void fsmcSramStop(SRAMDriver *sramp);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_FSMC_SRAM */
#endif /* SRAM_H_ */
/** @} */
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