stm32746g_discovery_sd.c File Reference

This file includes the uSD card driver mounted on STM32746G-Discovery board. More...

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Detailed Description

This file includes the uSD card driver mounted on STM32746G-Discovery board.

Author:

MCD Application Team

Version:

V1.0.0

Date:

25-June-2015

   1. How To use this driver:
   --------------------------
      - This driver is used to drive the micro SD external card mounted on STM32746G-Discovery
        board.
      - This driver does not need a specific component driver for the micro SD device
        to be included with.
   
   2. Driver description:
   ---------------------
     + Initialization steps:
        o Initialize the micro SD card using the BSP_SD_Init() function. This 
          function includes the MSP layer hardware resources initialization and the
          SDIO interface configuration to interface with the external micro SD. It 
          also includes the micro SD initialization sequence.
        o To check the SD card presence you can use the function BSP_SD_IsDetected() which 
          returns the detection status 
        o If SD presence detection interrupt mode is desired, you must configure the 
          SD detection interrupt mode by calling the function BSP_SD_ITConfig(). The interrupt 
          is generated as an external interrupt whenever the micro SD card is 
          plugged/unplugged in/from the board.
        o The function BSP_SD_GetCardInfo() is used to get the micro SD card information 
          which is stored in the structure "HAL_SD_CardInfoTypedef".
     
     + Micro SD card operations
        o The micro SD card can be accessed with read/write block(s) operations once 
          it is ready for access. The access can be performed whether using the polling
          mode by calling the functions BSP_SD_ReadBlocks()/BSP_SD_WriteBlocks(), or by DMA 
          transfer using the functions BSP_SD_ReadBlocks_DMA()/BSP_SD_WriteBlocks_DMA()
        o The DMA transfer complete is used with interrupt mode. Once the SD transfer
          is complete, the SD interrupt is handled using the function BSP_SD_IRQHandler(),
          the DMA Tx/Rx transfer complete are handled using the functions
          BSP_SD_DMA_Tx_IRQHandler()/BSP_SD_DMA_Rx_IRQHandler(). The corresponding user callbacks 
          are implemented by the user at application level. 
        o The SD erase block(s) is performed using the function BSP_SD_Erase() with specifying
          the number of blocks to erase.
        o The SD runtime status is returned when calling the function BSP_SD_GetStatus().
  

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Definition in file stm32746g_discovery_sd.c.