BSP library for DISCO-STM32F746NG board. Added support for on-board QSPI Flash memory MICRO N25Q128A. Ported from library BSP_DISCO_L476VG.
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stm32746g_discovery_sdram.c File Reference
This file includes the SDRAM driver for the MT48LC4M32B2B5-7 memory device mounted on STM32746G-Discovery board. More...
|Initializes the SDRAM device. |
|DeInitializes the SDRAM device. |
|void||BSP_SDRAM_Initialization_sequence (uint32_t RefreshCount)|
|Programs the SDRAM device. |
|uint8_t||BSP_SDRAM_ReadData (uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)|
|Reads an amount of data from the SDRAM memory in polling mode. |
|uint8_t||BSP_SDRAM_ReadData_DMA (uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)|
|Reads an amount of data from the SDRAM memory in DMA mode. |
|uint8_t||BSP_SDRAM_WriteData (uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)|
|Writes an amount of data to the SDRAM memory in polling mode. |
|uint8_t||BSP_SDRAM_WriteData_DMA (uint32_t uwStartAddress, uint32_t *pData, uint32_t uwDataSize)|
|Writes an amount of data to the SDRAM memory in DMA mode. |
|uint8_t||BSP_SDRAM_Sendcmd (FMC_SDRAM_CommandTypeDef *SdramCmd)|
|Sends command to the SDRAM bank. |
|Handles SDRAM DMA transfer interrupt request. |
|__weak void||BSP_SDRAM_MspInit (SDRAM_HandleTypeDef *hsdram, void *Params)|
|Initializes SDRAM MSP. |
|__weak void||BSP_SDRAM_MspDeInit (SDRAM_HandleTypeDef *hsdram, void *Params)|
|DeInitializes SDRAM MSP. |
This file includes the SDRAM driver for the MT48LC4M32B2B5-7 memory device mounted on STM32746G-Discovery board.
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.
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Definition in file stm32746g_discovery_sdram.c.
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