From 97b7064031ed2be5980a59cdab8174a9074febb4 Mon Sep 17 00:00:00 2001 From: Fabien Poussin Date: Tue, 29 Oct 2019 19:38:09 +0100 Subject: Updating FSMC driver (SDRAM part first) --- os/hal/include/fsmc/sdram.h | 173 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 173 insertions(+) create mode 100644 os/hal/include/fsmc/sdram.h (limited to 'os/hal/include/fsmc/sdram.h') diff --git a/os/hal/include/fsmc/sdram.h b/os/hal/include/fsmc/sdram.h new file mode 100644 index 0000000..83b78a6 --- /dev/null +++ b/os/hal/include/fsmc/sdram.h @@ -0,0 +1,173 @@ +/* + 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. +*/ +/* + SDRAM routines added by Nick Klimov aka progfin. + */ + +/** + * @file hal_fsmc_sdram.h + * @brief SDRAM Driver subsystem low level driver header. + * + * @addtogroup SDRAM + * @{ + */ + +#ifndef SDRAM_H_ +#define SDRAM_H_ + +#if (defined(STM32F427xx) || defined(STM32F437xx) || \ + defined(STM32F429xx) || defined(STM32F439xx) || \ + defined(STM32F745xx) || defined(STM32F746xx) || \ + defined(STM32F756xx) || defined(STM32F767xx) || \ + defined(STM32F769xx) || defined(STM32F777xx) || \ + defined(STM32F779xx)) + +#if (HAL_USE_FSMC_SDRAM == TRUE) || defined(__DOXYGEN__) + +/*===========================================================================*/ +/* Driver constants. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Driver pre-compile time settings. */ +/*===========================================================================*/ +/** + * @name Configuration options + * @{ + */ + +/** + * @brief SDRAM driver enable switch. + * @details If set to @p TRUE the support for SDRAM1 is included. + */ +#if !defined(STM32_FSMC_USE_SDRAM1) || defined(__DOXYGEN__) +#define STM32_FSMC_USE_SDRAM1 FALSE +#else +#define STM32_SDRAM1_MAP_BASE FSMC_Bank5_MAP_BASE +#endif + +/** + * @brief SDRAM driver enable switch. + * @details If set to @p TRUE the support for SDRAM2 is included. + */ +#if !defined(STM32_FSMC_USE_SDRAM2) || defined(__DOXYGEN__) +#define STM32_FSMC_USE_SDRAM2 FALSE +#else +#define STM32_SDRAM2_MAP_BASE FSMC_Bank6_MAP_BASE +#endif + +/** @} */ + +/*===========================================================================*/ +/* Derived constants and error checks. */ +/*===========================================================================*/ + +#if !STM32_FSMC_USE_SDRAM1 && !STM32_FSMC_USE_SDRAM2 +#error "SDRAM driver activated but no SDRAM peripheral assigned" +#endif + +#if (STM32_FSMC_USE_SDRAM1 || STM32_FSMC_USE_SDRAM2) && !STM32_HAS_FSMC +#error "FMC not present in the selected device" +#endif + +/*===========================================================================*/ +/* Driver data structures and types. */ +/*===========================================================================*/ +/** + * @brief Driver state machine possible states. + */ +typedef enum { + SDRAM_UNINIT = 0, /**< Not initialized. */ + SDRAM_STOP = 1, /**< Stopped. */ + SDRAM_READY = 2, /**< Ready. */ +} sdramstate_t; + +/** + * @brief Type of a structure representing an SDRAM driver. + */ +typedef struct SDRAMDriver SDRAMDriver; + +/** + * @brief Driver configuration structure. + * @note It could be empty on some architectures. + */ +typedef struct { + /** + * @brief SDRAM control register. + * @note Its value will be used for both banks. + */ + uint32_t sdcr; + + /** + * @brief SDRAM timing register. + * @note Its value will be used for both banks. + */ + uint32_t sdtr; + + /** + * @brief SDRAM command mode register. + * @note Only its MRD and NRFS bits will be used. + */ + uint32_t sdcmr; + + /** + * @brief SDRAM refresh timer register. + * @note Only its COUNT bits will be used. + */ + uint32_t sdrtr; +} SDRAMConfig; + +/** + * @brief Structure representing an SDRAM driver. + */ +struct SDRAMDriver { + /** + * @brief Driver state. + */ + sdramstate_t state; + /** + * @brief Pointer to the FMC SDRAM registers block. + */ + FSMC_SDRAM_TypeDef *sdram; +}; + +/*===========================================================================*/ +/* Driver macros. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* External declarations. */ +/*===========================================================================*/ + +extern SDRAMDriver SDRAMD; + +#ifdef __cplusplus +extern "C" { +#endif + void fsmcSdramInit(void); + void fsmcSdramStart(SDRAMDriver *sdramp, const SDRAMConfig *cfgp); + void fsmcSdramStop(SDRAMDriver *sdramp); +#ifdef __cplusplus +} +#endif + +#endif /* HAL_USE_FSMC_SDRAM */ + +#endif /* STM32F427xx / STM32F429xx / STM32F437xx / STM32F439xx */ + +#endif /* SDRAM_H_ */ + +/** @} */ -- cgit v1.2.3