Nirvana Jay
patch for F746 demo
Fork of
BSP_DISCO_F746NG
by 
ST
Diff: stm32746g_discovery_sdram.c
- Revision:
- 0:c9112f0c67e3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/stm32746g_discovery_sdram.c Mon Sep 28 13:34:16 2015 +0000
@@ -0,0 +1,503 @@
+/**
+ ******************************************************************************
+ * @file stm32746g_discovery_sdram.c
+ * @author MCD Application Team
+ * @version V1.0.0
+ * @date 25-June-2015
+ * @brief This file includes the SDRAM driver for the MT48LC4M32B2B5-7 memory
+ * device mounted on STM32746G-Discovery board.
+ @verbatim
+ 1. How To use this driver:
+ --------------------------
+ - This driver is used to drive the MT48LC4M32B2B5-7 SDRAM external memory mounted
+ on STM32746G-Discovery board.
+ - This driver does not need a specific component driver for the SDRAM device
+ to be included with.
+
+ 2. Driver description:
+ ---------------------
+ + Initialization steps:
+ o Initialize the SDRAM external memory using the BSP_SDRAM_Init() function. This
+ function includes the MSP layer hardware resources initialization and the
+ FMC controller configuration to interface with the external SDRAM memory.
+ o It contains the SDRAM initialization sequence to program the SDRAM external
+ device using the function BSP_SDRAM_Initialization_sequence(). Note that this
+ sequence is standard for all SDRAM devices, but can include some differences
+ from a device to another. If it is the case, the right sequence should be
+ implemented separately.
+
+ + SDRAM read/write operations
+ o SDRAM external memory can be accessed with read/write operations once it is
+ initialized.
+ Read/write operation can be performed with AHB access using the functions
+ BSP_SDRAM_ReadData()/BSP_SDRAM_WriteData(), or by DMA transfer using the functions
+ BSP_SDRAM_ReadData_DMA()/BSP_SDRAM_WriteData_DMA().
+ o The AHB access is performed with 32-bit width transaction, the DMA transfer
+ configuration is fixed at single (no burst) word transfer (see the
+ SDRAM_MspInit() static function).
+ o User can implement his own functions for read/write access with his desired
+ configurations.
+ o If interrupt mode is used for DMA transfer, the function BSP_SDRAM_DMA_IRQHandler()
+ is called in IRQ handler file, to serve the generated interrupt once the DMA
+ transfer is complete.
+ o You can send a command to the SDRAM device in runtime using the function
+ BSP_SDRAM_Sendcmd(), and giving the desired command as parameter chosen between
+ the predefined commands of the "FMC_SDRAM_CommandTypeDef" structure.
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32746g_discovery_sdram.h"
+
+// mbed function to replace HAL_Delay function
+void wait_ms(int ms);
+
+/** @addtogroup BSP
+ * @{
+ */
+
+/** @addtogroup STM32746G_DISCOVERY
+ * @{
+ */
+
+/** @defgroup STM32746G_DISCOVERY_SDRAM STM32746G_DISCOVERY_SDRAM
+ * @{
+ */
+
+/** @defgroup STM32746G_DISCOVERY_SDRAM_Private_Types_Definitions STM32746G_DISCOVERY_SDRAM Private Types Definitions
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup STM32746G_DISCOVERY_SDRAM_Private_Defines STM32746G_DISCOVERY_SDRAM Private Defines
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup STM32746G_DISCOVERY_SDRAM_Private_Macros STM32746G_DISCOVERY_SDRAM Private Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup STM32746G_DISCOVERY_SDRAM_Private_Variables STM32746G_DISCOVERY_SDRAM Private Variables
+ * @{
+ */
+static SDRAM_HandleTypeDef sdramHandle;
+static FMC_SDRAM_TimingTypeDef Timing;
+static FMC_SDRAM_CommandTypeDef Command;
+/**
+ * @}
+ */
+
+/** @defgroup STM32746G_DISCOVERY_SDRAM_Private_Function_Prototypes STM32746G_DISCOVERY_SDRAM Private Function Prototypes
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup STM32746G_DISCOVERY_SDRAM_Exported_Functions STM32746G_DISCOVERY_SDRAM Exported Functions
+ * @{
+ */
+
+/**
+ * @brief Initializes the SDRAM device.
+ * @retval SDRAM status
+ */
+uint8_t BSP_SDRAM_Init(void)
+{
+ static uint8_t sdramstatus = SDRAM_ERROR;
+ /* SDRAM device configuration */
+ sdramHandle.Instance = FMC_SDRAM_DEVICE;
+
+ /* Timing configuration for 100Mhz as SD clock frequency (System clock is up to 200Mhz) */
+ Timing.LoadToActiveDelay = 2;
+ Timing.ExitSelfRefreshDelay = 7;
+ Timing.SelfRefreshTime = 4;
+ Timing.RowCycleDelay = 7;
+ Timing.WriteRecoveryTime = 2;
+ Timing.RPDelay = 2;
+ Timing.RCDDelay = 2;
+
+ sdramHandle.Init.SDBank = FMC_SDRAM_BANK1;
+ sdramHandle.Init.ColumnBitsNumber = FMC_SDRAM_COLUMN_BITS_NUM_8;
+ sdramHandle.Init.RowBitsNumber = FMC_SDRAM_ROW_BITS_NUM_12;
+ sdramHandle.Init.MemoryDataWidth = SDRAM_MEMORY_WIDTH;
+ sdramHandle.Init.InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4;
+ sdramHandle.Init.CASLatency = FMC_SDRAM_CAS_LATENCY_2;
+ sdramHandle.Init.WriteProtection = FMC_SDRAM_WRITE_PROTECTION_DISABLE;
+ sdramHandle.Init.SDClockPeriod = SDCLOCK_PERIOD;
+ sdramHandle.Init.ReadBurst = FMC_SDRAM_RBURST_ENABLE;
+ sdramHandle.Init.ReadPipeDelay = FMC_SDRAM_RPIPE_DELAY_0;
+
+ /* SDRAM controller initialization */
+
+ BSP_SDRAM_MspInit(&sdramHandle, NULL); /* __weak function can be rewritten by the application */
+
+ if(HAL_SDRAM_Init(&sdramHandle, &Timing) != HAL_OK)
+ {
+ sdramstatus = SDRAM_ERROR;
+ }
+ else
+ {
+ sdramstatus = SDRAM_OK;
+ }
+
+ /* SDRAM initialization sequence */
+ BSP_SDRAM_Initialization_sequence(REFRESH_COUNT);
+
+ return sdramstatus;
+}
+
+/**
+ * @brief DeInitializes the SDRAM device.
+ * @retval SDRAM status
+ */
+uint8_t BSP_SDRAM_DeInit(void)
+{
+ static uint8_t sdramstatus = SDRAM_ERROR;
+ /* SDRAM device de-initialization */
+ sdramHandle.Instance = FMC_SDRAM_DEVICE;
+
+ if(HAL_SDRAM_DeInit(&sdramHandle) != HAL_OK)
+ {
+ sdramstatus = SDRAM_ERROR;
+ }
+ else
+ {
+ sdramstatus = SDRAM_OK;
+ }
+
+ /* SDRAM controller de-initialization */
+ BSP_SDRAM_MspDeInit(&sdramHandle, NULL);
+
+ return sdramstatus;
+}
+
+/**
+ * @brief Programs the SDRAM device.
+ * @param RefreshCount: SDRAM refresh counter value
+ * @retval None
+ */
+void BSP_SDRAM_Initialization_sequence(uint32_t RefreshCount)
+{
+ __IO uint32_t tmpmrd = 0;
+
+ /* Step 1: Configure a clock configuration enable command */
+ Command.CommandMode = FMC_SDRAM_CMD_CLK_ENABLE;
+ Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
+ Command.AutoRefreshNumber = 1;
+ Command.ModeRegisterDefinition = 0;
+
+ /* Send the command */
+ HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
+
+ /* Step 2: Insert 100 us minimum delay */
+ /* Inserted delay is equal to 1 ms due to systick time base unit (ms) */
+ //HAL_Delay(1);
+ wait_ms(1);
+
+ /* Step 3: Configure a PALL (precharge all) command */
+ Command.CommandMode = FMC_SDRAM_CMD_PALL;
+ Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
+ Command.AutoRefreshNumber = 1;
+ Command.ModeRegisterDefinition = 0;
+
+ /* Send the command */
+ HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
+
+ /* Step 4: Configure an Auto Refresh command */
+ Command.CommandMode = FMC_SDRAM_CMD_AUTOREFRESH_MODE;
+ Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
+ Command.AutoRefreshNumber = 8;
+ Command.ModeRegisterDefinition = 0;
+
+ /* Send the command */
+ HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
+
+ /* Step 5: Program the external memory mode register */
+ tmpmrd = (uint32_t)SDRAM_MODEREG_BURST_LENGTH_1 |\
+ SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL |\
+ SDRAM_MODEREG_CAS_LATENCY_2 |\
+ SDRAM_MODEREG_OPERATING_MODE_STANDARD |\
+ SDRAM_MODEREG_WRITEBURST_MODE_SINGLE;
+
+ Command.CommandMode = FMC_SDRAM_CMD_LOAD_MODE;
+ Command.CommandTarget = FMC_SDRAM_CMD_TARGET_BANK1;
+ Command.AutoRefreshNumber = 1;
+ Command.ModeRegisterDefinition = tmpmrd;
+
+ /* Send the command */
+ HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT);
+
+ /* Step 6: Set the refresh rate counter */
+ /* Set the device refresh rate */
+ HAL_SDRAM_ProgramRefreshRate(&sdramHandle, RefreshCount);
+}
+
+/**
+ * @brief Reads an amount of data from the SDRAM memory in polling mode.
+ * @param uwStartAddress: Read start address
+ * @param pData: Pointer to data to be read
+ * @param uwDataSize: Size of read data from the memory
+ * @retval SDRAM status
+ */
+uint8_t BSP_SDRAM_ReadData(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
+{
+ if(HAL_SDRAM_Read_32b(&sdramHandle, (uint32_t *)uwStartAddress, pData, uwDataSize) != HAL_OK)
+ {
+ return SDRAM_ERROR;
+ }
+ else
+ {
+ return SDRAM_OK;
+ }
+}
+
+/**
+ * @brief Reads an amount of data from the SDRAM memory in DMA mode.
+ * @param uwStartAddress: Read start address
+ * @param pData: Pointer to data to be read
+ * @param uwDataSize: Size of read data from the memory
+ * @retval SDRAM status
+ */
+uint8_t BSP_SDRAM_ReadData_DMA(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
+{
+ if(HAL_SDRAM_Read_DMA(&sdramHandle, (uint32_t *)uwStartAddress, pData, uwDataSize) != HAL_OK)
+ {
+ return SDRAM_ERROR;
+ }
+ else
+ {
+ return SDRAM_OK;
+ }
+}
+
+/**
+ * @brief Writes an amount of data to the SDRAM memory in polling mode.
+ * @param uwStartAddress: Write start address
+ * @param pData: Pointer to data to be written
+ * @param uwDataSize: Size of written data from the memory
+ * @retval SDRAM status
+ */
+uint8_t BSP_SDRAM_WriteData(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
+{
+ if(HAL_SDRAM_Write_32b(&sdramHandle, (uint32_t *)uwStartAddress, pData, uwDataSize) != HAL_OK)
+ {
+ return SDRAM_ERROR;
+ }
+ else
+ {
+ return SDRAM_OK;
+ }
+}
+
+/**
+ * @brief Writes an amount of data to the SDRAM memory in DMA mode.
+ * @param uwStartAddress: Write start address
+ * @param pData: Pointer to data to be written
+ * @param uwDataSize: Size of written data from the memory
+ * @retval SDRAM status
+ */
+uint8_t BSP_SDRAM_WriteData_DMA(uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)
+{
+ if(HAL_SDRAM_Write_DMA(&sdramHandle, (uint32_t *)uwStartAddress, pData, uwDataSize) != HAL_OK)
+ {
+ return SDRAM_ERROR;
+ }
+ else
+ {
+ return SDRAM_OK;
+ }
+}
+
+/**
+ * @brief Sends command to the SDRAM bank.
+ * @param SdramCmd: Pointer to SDRAM command structure
+ * @retval SDRAM status
+ */
+uint8_t BSP_SDRAM_Sendcmd(FMC_SDRAM_CommandTypeDef *SdramCmd)
+{
+ if(HAL_SDRAM_SendCommand(&sdramHandle, SdramCmd, SDRAM_TIMEOUT) != HAL_OK)
+ {
+ return SDRAM_ERROR;
+ }
+ else
+ {
+ return SDRAM_OK;
+ }
+}
+
+/**
+ * @brief Handles SDRAM DMA transfer interrupt request.
+ * @retval None
+ */
+void BSP_SDRAM_DMA_IRQHandler(void)
+{
+ HAL_DMA_IRQHandler(sdramHandle.hdma);
+}
+
+/**
+ * @brief Initializes SDRAM MSP.
+ * @param hsdram: SDRAM handle
+ * @param Params
+ * @retval None
+ */
+__weak void BSP_SDRAM_MspInit(SDRAM_HandleTypeDef *hsdram, void *Params)
+{
+ static DMA_HandleTypeDef dma_handle;
+ GPIO_InitTypeDef gpio_init_structure;
+
+ /* Enable FMC clock */
+ __HAL_RCC_FMC_CLK_ENABLE();
+
+ /* Enable chosen DMAx clock */
+ __DMAx_CLK_ENABLE();
+
+ /* Enable GPIOs clock */
+ __HAL_RCC_GPIOC_CLK_ENABLE();
+ __HAL_RCC_GPIOD_CLK_ENABLE();
+ __HAL_RCC_GPIOE_CLK_ENABLE();
+ __HAL_RCC_GPIOF_CLK_ENABLE();
+ __HAL_RCC_GPIOG_CLK_ENABLE();
+ __HAL_RCC_GPIOH_CLK_ENABLE();
+
+ /* Common GPIO configuration */
+ gpio_init_structure.Mode = GPIO_MODE_AF_PP;
+ gpio_init_structure.Pull = GPIO_PULLUP;
+ gpio_init_structure.Speed = GPIO_SPEED_FAST;
+ gpio_init_structure.Alternate = GPIO_AF12_FMC;
+
+ /* GPIOC configuration */
+ gpio_init_structure.Pin = GPIO_PIN_3;
+ HAL_GPIO_Init(GPIOC, &gpio_init_structure);
+
+ /* GPIOD configuration */
+ gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_3 | GPIO_PIN_8 | GPIO_PIN_9 |
+ GPIO_PIN_10 | GPIO_PIN_14 | GPIO_PIN_15;
+ HAL_GPIO_Init(GPIOD, &gpio_init_structure);
+
+ /* GPIOE configuration */
+ gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_7| GPIO_PIN_8 | GPIO_PIN_9 |\
+ GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 |\
+ GPIO_PIN_15;
+ HAL_GPIO_Init(GPIOE, &gpio_init_structure);
+
+ /* GPIOF configuration */
+ gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2| GPIO_PIN_3 | GPIO_PIN_4 |\
+ GPIO_PIN_5 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 |\
+ GPIO_PIN_15;
+ HAL_GPIO_Init(GPIOF, &gpio_init_structure);
+
+ /* GPIOG configuration */
+ gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4| GPIO_PIN_5 | GPIO_PIN_8 |\
+ GPIO_PIN_15;
+ HAL_GPIO_Init(GPIOG, &gpio_init_structure);
+
+ /* GPIOH configuration */
+ gpio_init_structure.Pin = GPIO_PIN_3 | GPIO_PIN_5;
+ HAL_GPIO_Init(GPIOH, &gpio_init_structure);
+
+ /* Configure common DMA parameters */
+ dma_handle.Init.Channel = SDRAM_DMAx_CHANNEL;
+ dma_handle.Init.Direction = DMA_MEMORY_TO_MEMORY;
+ dma_handle.Init.PeriphInc = DMA_PINC_ENABLE;
+ dma_handle.Init.MemInc = DMA_MINC_ENABLE;
+ dma_handle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
+ dma_handle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
+ dma_handle.Init.Mode = DMA_NORMAL;
+ dma_handle.Init.Priority = DMA_PRIORITY_HIGH;
+ dma_handle.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
+ dma_handle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
+ dma_handle.Init.MemBurst = DMA_MBURST_SINGLE;
+ dma_handle.Init.PeriphBurst = DMA_PBURST_SINGLE;
+
+ dma_handle.Instance = SDRAM_DMAx_STREAM;
+
+ /* Associate the DMA handle */
+ __HAL_LINKDMA(hsdram, hdma, dma_handle);
+
+ /* Deinitialize the stream for new transfer */
+ HAL_DMA_DeInit(&dma_handle);
+
+ /* Configure the DMA stream */
+ HAL_DMA_Init(&dma_handle);
+
+ /* NVIC configuration for DMA transfer complete interrupt */
+ HAL_NVIC_SetPriority(SDRAM_DMAx_IRQn, 5, 0);
+ HAL_NVIC_EnableIRQ(SDRAM_DMAx_IRQn);
+}
+
+/**
+ * @brief DeInitializes SDRAM MSP.
+ * @param hsdram: SDRAM handle
+ * @param Params
+ * @retval None
+ */
+__weak void BSP_SDRAM_MspDeInit(SDRAM_HandleTypeDef *hsdram, void *Params)
+{
+ static DMA_HandleTypeDef dma_handle;
+
+ /* Disable NVIC configuration for DMA interrupt */
+ HAL_NVIC_DisableIRQ(SDRAM_DMAx_IRQn);
+
+ /* Deinitialize the stream for new transfer */
+ dma_handle.Instance = SDRAM_DMAx_STREAM;
+ HAL_DMA_DeInit(&dma_handle);
+
+ /* GPIO pins clock, FMC clock and DMA clock can be shut down in the applications
+ by surcharging this __weak function */
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/