| /** |
| ****************************************************************************** |
| * @file stm32l1xx_ll_fsmc.c |
| * @author MCD Application Team |
| * @brief FSMC Low Layer HAL module driver. |
| * |
| * This file provides firmware functions to manage the following |
| * functionalities of the Flexible Memory Controller (FSMC) peripheral memories: |
| * + Initialization/de-initialization functions |
| * + Peripheral Control functions |
| * + Peripheral State functions |
| * |
| @verbatim |
| ============================================================================== |
| ##### FSMC peripheral features ##### |
| ============================================================================== |
| [..] The Flexible memory controller (FSMC) includes following memory controllers: |
| (+) The NOR/PSRAM memory controller |
| |
| [..] The FSMC functional block makes the interface with synchronous and asynchronous static |
| memories. Its main purposes are: |
| (+) to translate AHB transactions into the appropriate external device protocol |
| (+) to meet the access time requirements of the external memory devices |
| |
| [..] All external memories share the addresses, data and control signals with the controller. |
| Each external device is accessed by means of a unique Chip Select. The FSMC performs |
| only one access at a time to an external device. |
| The main features of the FSMC controller are the following: |
| (+) Interface with static-memory mapped devices including: |
| (++) Static random access memory (SRAM) |
| (++) Read-only memory (ROM) |
| (++) NOR Flash memory/OneNAND Flash memory |
| (++) PSRAM (4 memory banks) |
| (+) Independent Chip Select control for each memory bank |
| (+) Independent configuration for each memory bank |
| |
| @endverbatim |
| ****************************************************************************** |
| * @attention |
| * |
| * <h2><center>© Copyright (c) 2016 STMicroelectronics. |
| * All rights reserved.</center></h2> |
| * |
| * This software component is licensed by ST under BSD 3-Clause license, |
| * the "License"; You may not use this file except in compliance with the |
| * License. You may obtain a copy of the License at: |
| * opensource.org/licenses/BSD-3-Clause |
| * |
| ****************************************************************************** |
| */ |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32l1xx_hal.h" |
| |
| /** @addtogroup STM32L1xx_HAL_Driver |
| * @{ |
| */ |
| #if defined(HAL_NOR_MODULE_ENABLED) || defined(HAL_SRAM_MODULE_ENABLED) |
| |
| /** @defgroup FSMC_LL FSMC Low Layer |
| * @brief FSMC driver modules |
| * @{ |
| */ |
| |
| /* Private typedef -----------------------------------------------------------*/ |
| /* Private define ------------------------------------------------------------*/ |
| |
| /** @defgroup FSMC_LL_Private_Constants FSMC Low Layer Private Constants |
| * @{ |
| */ |
| |
| /* ----------------------- FSMC registers bit mask --------------------------- */ |
| |
| #if defined(FSMC_BANK1) |
| /* --- BCR Register ---*/ |
| /* BCR register clear mask */ |
| |
| /* --- BTR Register ---*/ |
| /* BTR register clear mask */ |
| #define BTR_CLEAR_MASK ((uint32_t)(FSMC_BTRx_ADDSET | FSMC_BTRx_ADDHLD |\ |
| FSMC_BTRx_DATAST | FSMC_BTRx_BUSTURN |\ |
| FSMC_BTRx_CLKDIV | FSMC_BTRx_DATLAT |\ |
| FSMC_BTRx_ACCMOD)) |
| |
| /* --- BWTR Register ---*/ |
| /* BWTR register clear mask */ |
| #define BWTR_CLEAR_MASK ((uint32_t)(FSMC_BWTRx_ADDSET | FSMC_BWTRx_ADDHLD |\ |
| FSMC_BWTRx_DATAST | FSMC_BWTRx_BUSTURN |\ |
| FSMC_BWTRx_ACCMOD)) |
| #endif /* FSMC_BANK1 */ |
| |
| /** |
| * @} |
| */ |
| |
| /* Private macro -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private function prototypes -----------------------------------------------*/ |
| /* Exported functions --------------------------------------------------------*/ |
| |
| /** @defgroup FSMC_LL_Exported_Functions FSMC Low Layer Exported Functions |
| * @{ |
| */ |
| |
| #if defined(FSMC_BANK1) |
| |
| /** @defgroup FSMC_LL_Exported_Functions_NORSRAM FSMC Low Layer NOR SRAM Exported Functions |
| * @brief NORSRAM Controller functions |
| * |
| @verbatim |
| ============================================================================== |
| ##### How to use NORSRAM device driver ##### |
| ============================================================================== |
| |
| [..] |
| This driver contains a set of APIs to interface with the FSMC NORSRAM banks in order |
| to run the NORSRAM external devices. |
| |
| (+) FSMC NORSRAM bank reset using the function FSMC_NORSRAM_DeInit() |
| (+) FSMC NORSRAM bank control configuration using the function FSMC_NORSRAM_Init() |
| (+) FSMC NORSRAM bank timing configuration using the function FSMC_NORSRAM_Timing_Init() |
| (+) FSMC NORSRAM bank extended timing configuration using the function |
| FSMC_NORSRAM_Extended_Timing_Init() |
| (+) FSMC NORSRAM bank enable/disable write operation using the functions |
| FSMC_NORSRAM_WriteOperation_Enable()/FSMC_NORSRAM_WriteOperation_Disable() |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** @defgroup FSMC_LL_NORSRAM_Exported_Functions_Group1 Initialization and de-initialization functions |
| * @brief Initialization and Configuration functions |
| * |
| @verbatim |
| ============================================================================== |
| ##### Initialization and de_initialization functions ##### |
| ============================================================================== |
| [..] |
| This section provides functions allowing to: |
| (+) Initialize and configure the FSMC NORSRAM interface |
| (+) De-initialize the FSMC NORSRAM interface |
| (+) Configure the FSMC clock and associated GPIOs |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Initialize the FSMC_NORSRAM device according to the specified |
| * control parameters in the FSMC_NORSRAM_InitTypeDef |
| * @param Device Pointer to NORSRAM device instance |
| * @param Init Pointer to NORSRAM Initialization structure |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef FSMC_NORSRAM_Init(FSMC_NORSRAM_TypeDef *Device, |
| FSMC_NORSRAM_InitTypeDef *Init) |
| { |
| uint32_t flashaccess; |
| uint32_t btcr_reg; |
| uint32_t mask; |
| |
| /* Check the parameters */ |
| assert_param(IS_FSMC_NORSRAM_DEVICE(Device)); |
| assert_param(IS_FSMC_NORSRAM_BANK(Init->NSBank)); |
| assert_param(IS_FSMC_MUX(Init->DataAddressMux)); |
| assert_param(IS_FSMC_MEMORY(Init->MemoryType)); |
| assert_param(IS_FSMC_NORSRAM_MEMORY_WIDTH(Init->MemoryDataWidth)); |
| assert_param(IS_FSMC_BURSTMODE(Init->BurstAccessMode)); |
| assert_param(IS_FSMC_WAIT_POLARITY(Init->WaitSignalPolarity)); |
| assert_param(IS_FSMC_WRAP_MODE(Init->WrapMode)); |
| assert_param(IS_FSMC_WAIT_SIGNAL_ACTIVE(Init->WaitSignalActive)); |
| assert_param(IS_FSMC_WRITE_OPERATION(Init->WriteOperation)); |
| assert_param(IS_FSMC_WAITE_SIGNAL(Init->WaitSignal)); |
| assert_param(IS_FSMC_EXTENDED_MODE(Init->ExtendedMode)); |
| assert_param(IS_FSMC_ASYNWAIT(Init->AsynchronousWait)); |
| assert_param(IS_FSMC_WRITE_BURST(Init->WriteBurst)); |
| assert_param(IS_FSMC_PAGESIZE(Init->PageSize)); |
| |
| /* Disable NORSRAM Device */ |
| __FSMC_NORSRAM_DISABLE(Device, Init->NSBank); |
| |
| /* Set NORSRAM device control parameters */ |
| if (Init->MemoryType == FSMC_MEMORY_TYPE_NOR) |
| { |
| flashaccess = FSMC_NORSRAM_FLASH_ACCESS_ENABLE; |
| } |
| else |
| { |
| flashaccess = FSMC_NORSRAM_FLASH_ACCESS_DISABLE; |
| } |
| |
| btcr_reg = (flashaccess | \ |
| Init->DataAddressMux | \ |
| Init->MemoryType | \ |
| Init->MemoryDataWidth | \ |
| Init->BurstAccessMode | \ |
| Init->WaitSignalPolarity | \ |
| Init->WaitSignalActive | \ |
| Init->WriteOperation | \ |
| Init->WaitSignal | \ |
| Init->ExtendedMode | \ |
| Init->AsynchronousWait | \ |
| Init->WriteBurst); |
| |
| btcr_reg |= Init->WrapMode; |
| btcr_reg |= Init->PageSize; |
| |
| mask = (FSMC_BCRx_MBKEN | |
| FSMC_BCRx_MUXEN | |
| FSMC_BCRx_MTYP | |
| FSMC_BCRx_MWID | |
| FSMC_BCRx_FACCEN | |
| FSMC_BCRx_BURSTEN | |
| FSMC_BCRx_WAITPOL | |
| FSMC_BCRx_WAITCFG | |
| FSMC_BCRx_WREN | |
| FSMC_BCRx_WAITEN | |
| FSMC_BCRx_EXTMOD | |
| FSMC_BCRx_ASYNCWAIT | |
| FSMC_BCRx_CBURSTRW); |
| |
| mask |= FSMC_BCRx_WRAPMOD; |
| mask |= FSMC_BCRx_CPSIZE; |
| |
| MODIFY_REG(Device->BTCR[Init->NSBank], mask, btcr_reg); |
| |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief DeInitialize the FSMC_NORSRAM peripheral |
| * @param Device Pointer to NORSRAM device instance |
| * @param ExDevice Pointer to NORSRAM extended mode device instance |
| * @param Bank NORSRAM bank number |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef FSMC_NORSRAM_DeInit(FSMC_NORSRAM_TypeDef *Device, |
| FSMC_NORSRAM_EXTENDED_TypeDef *ExDevice, uint32_t Bank) |
| { |
| /* Check the parameters */ |
| assert_param(IS_FSMC_NORSRAM_DEVICE(Device)); |
| assert_param(IS_FSMC_NORSRAM_EXTENDED_DEVICE(ExDevice)); |
| assert_param(IS_FSMC_NORSRAM_BANK(Bank)); |
| |
| /* Disable the FSMC_NORSRAM device */ |
| __FSMC_NORSRAM_DISABLE(Device, Bank); |
| |
| /* De-initialize the FSMC_NORSRAM device */ |
| /* FSMC_NORSRAM_BANK1 */ |
| if (Bank == FSMC_NORSRAM_BANK1) |
| { |
| Device->BTCR[Bank] = 0x000030DBU; |
| } |
| /* FSMC_NORSRAM_BANK2, FSMC_NORSRAM_BANK3 or FSMC_NORSRAM_BANK4 */ |
| else |
| { |
| Device->BTCR[Bank] = 0x000030D2U; |
| } |
| |
| Device->BTCR[Bank + 1U] = 0x0FFFFFFFU; |
| ExDevice->BWTR[Bank] = 0x0FFFFFFFU; |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Initialize the FSMC_NORSRAM Timing according to the specified |
| * parameters in the FSMC_NORSRAM_TimingTypeDef |
| * @param Device Pointer to NORSRAM device instance |
| * @param Timing Pointer to NORSRAM Timing structure |
| * @param Bank NORSRAM bank number |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef FSMC_NORSRAM_Timing_Init(FSMC_NORSRAM_TypeDef *Device, |
| FSMC_NORSRAM_TimingTypeDef *Timing, uint32_t Bank) |
| { |
| |
| /* Check the parameters */ |
| assert_param(IS_FSMC_NORSRAM_DEVICE(Device)); |
| assert_param(IS_FSMC_ADDRESS_SETUP_TIME(Timing->AddressSetupTime)); |
| assert_param(IS_FSMC_ADDRESS_HOLD_TIME(Timing->AddressHoldTime)); |
| assert_param(IS_FSMC_DATASETUP_TIME(Timing->DataSetupTime)); |
| assert_param(IS_FSMC_TURNAROUND_TIME(Timing->BusTurnAroundDuration)); |
| assert_param(IS_FSMC_CLK_DIV(Timing->CLKDivision)); |
| assert_param(IS_FSMC_DATA_LATENCY(Timing->DataLatency)); |
| assert_param(IS_FSMC_ACCESS_MODE(Timing->AccessMode)); |
| assert_param(IS_FSMC_NORSRAM_BANK(Bank)); |
| |
| /* Set FSMC_NORSRAM device timing parameters */ |
| MODIFY_REG(Device->BTCR[Bank + 1U], BTR_CLEAR_MASK, (Timing->AddressSetupTime | |
| ((Timing->AddressHoldTime) << FSMC_BTRx_ADDHLD_Pos) | |
| ((Timing->DataSetupTime) << FSMC_BTRx_DATAST_Pos) | |
| ((Timing->BusTurnAroundDuration) << FSMC_BTRx_BUSTURN_Pos) | |
| (((Timing->CLKDivision) - 1U) << FSMC_BTRx_CLKDIV_Pos) | |
| (((Timing->DataLatency) - 2U) << FSMC_BTRx_DATLAT_Pos) | |
| (Timing->AccessMode))); |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Initialize the FSMC_NORSRAM Extended mode Timing according to the specified |
| * parameters in the FSMC_NORSRAM_TimingTypeDef |
| * @param Device Pointer to NORSRAM device instance |
| * @param Timing Pointer to NORSRAM Timing structure |
| * @param Bank NORSRAM bank number |
| * @param ExtendedMode FSMC Extended Mode |
| * This parameter can be one of the following values: |
| * @arg FSMC_EXTENDED_MODE_DISABLE |
| * @arg FSMC_EXTENDED_MODE_ENABLE |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef FSMC_NORSRAM_Extended_Timing_Init(FSMC_NORSRAM_EXTENDED_TypeDef *Device, |
| FSMC_NORSRAM_TimingTypeDef *Timing, uint32_t Bank, |
| uint32_t ExtendedMode) |
| { |
| /* Check the parameters */ |
| assert_param(IS_FSMC_EXTENDED_MODE(ExtendedMode)); |
| |
| /* Set NORSRAM device timing register for write configuration, if extended mode is used */ |
| if (ExtendedMode == FSMC_EXTENDED_MODE_ENABLE) |
| { |
| /* Check the parameters */ |
| assert_param(IS_FSMC_NORSRAM_EXTENDED_DEVICE(Device)); |
| assert_param(IS_FSMC_ADDRESS_SETUP_TIME(Timing->AddressSetupTime)); |
| assert_param(IS_FSMC_ADDRESS_HOLD_TIME(Timing->AddressHoldTime)); |
| assert_param(IS_FSMC_DATASETUP_TIME(Timing->DataSetupTime)); |
| assert_param(IS_FSMC_TURNAROUND_TIME(Timing->BusTurnAroundDuration)); |
| assert_param(IS_FSMC_ACCESS_MODE(Timing->AccessMode)); |
| assert_param(IS_FSMC_NORSRAM_BANK(Bank)); |
| |
| /* Set NORSRAM device timing register for write configuration, if extended mode is used */ |
| MODIFY_REG(Device->BWTR[Bank], BWTR_CLEAR_MASK, (Timing->AddressSetupTime | |
| ((Timing->AddressHoldTime) << FSMC_BWTRx_ADDHLD_Pos) | |
| ((Timing->DataSetupTime) << FSMC_BWTRx_DATAST_Pos) | |
| Timing->AccessMode | |
| ((Timing->BusTurnAroundDuration) << FSMC_BWTRx_BUSTURN_Pos))); |
| } |
| else |
| { |
| Device->BWTR[Bank] = 0x0FFFFFFFU; |
| } |
| |
| return HAL_OK; |
| } |
| /** |
| * @} |
| */ |
| |
| /** @addtogroup FSMC_LL_NORSRAM_Private_Functions_Group2 |
| * @brief management functions |
| * |
| @verbatim |
| ============================================================================== |
| ##### FSMC_NORSRAM Control functions ##### |
| ============================================================================== |
| [..] |
| This subsection provides a set of functions allowing to control dynamically |
| the FSMC NORSRAM interface. |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Enables dynamically FSMC_NORSRAM write operation. |
| * @param Device Pointer to NORSRAM device instance |
| * @param Bank NORSRAM bank number |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef FSMC_NORSRAM_WriteOperation_Enable(FSMC_NORSRAM_TypeDef *Device, uint32_t Bank) |
| { |
| /* Check the parameters */ |
| assert_param(IS_FSMC_NORSRAM_DEVICE(Device)); |
| assert_param(IS_FSMC_NORSRAM_BANK(Bank)); |
| |
| /* Enable write operation */ |
| SET_BIT(Device->BTCR[Bank], FSMC_WRITE_OPERATION_ENABLE); |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Disables dynamically FSMC_NORSRAM write operation. |
| * @param Device Pointer to NORSRAM device instance |
| * @param Bank NORSRAM bank number |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef FSMC_NORSRAM_WriteOperation_Disable(FSMC_NORSRAM_TypeDef *Device, uint32_t Bank) |
| { |
| /* Check the parameters */ |
| assert_param(IS_FSMC_NORSRAM_DEVICE(Device)); |
| assert_param(IS_FSMC_NORSRAM_BANK(Bank)); |
| |
| /* Disable write operation */ |
| CLEAR_BIT(Device->BTCR[Bank], FSMC_WRITE_OPERATION_ENABLE); |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| #endif /* FSMC_BANK1 */ |
| |
| |
| |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* HAL_NOR_MODULE_ENABLED */ |
| /** |
| * @} |
| */ |
| /** |
| * @} |
| */ |
| |
| /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
