MG32F157 Standard Peripherals Firmware Library
SDIO_ReadWrite example
  ****************** (C) COPYRIGHT 2023 Megawin Technology *******************
  * @file    SDIO/SDIO_ReadWrite/readme.txt
  * @author  Megawin Application Team
  * @version V0.0.4
  * @date    16-June-2023
  * @brief   Description of the SDIO SDIO_ReadWrite example.
  ******************************************************************************
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, MEGAWIN SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
  * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM
  * THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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Example Description

This example describes how to how to read and write an SD card using SDIO.

In this example, Main clock is from PLL clock and it is configured at 96MHz. The PLL clock is based on 8MHz HSE. APB1 clock is the 2 frequency division of the Main clock, APB2 clock is from Main clock.

Directory contents
  • SDIO/SDIO_ReadWrite/SDIO_ReadWrite.uvprojx MDK5 project file
  • SDIO/SDIO_ReadWrite/SDIO_ReadWrite.uvoptx MDK5 project options file
  • SDIO/SDIO_ReadWrite/JLinkSettings.ini Jlink settings file
  • SDIO/SDIO_ReadWrite/bsp_sdio_sdcard.c SDIO reads and writes SD card driver source code
  • SDIO/SDIO_ReadWrite/bsp_sdio_sdcard.h SDIO reads and writes SD card driver header file
  • SDIO/SDIO_ReadWrite/main.c Main program
Hardware and Software environment
  • Hardware environment
    • HSE crystal is 8MHz
    • The chip pins are connected as follows:
      • SDIO_D0 PC8 pin is connected to SD CARD D0
      • SDIO_D1 PC9 pin is connected to SD CARD D1
      • SDIO_D2 PC10 pin is connected to SD CARD D2
      • SDIO_D3 PC11 pin is connected to SD CARD D3
      • SDIO_CK PC12 pin is connected to SD CARD CK
      • SDIO_CMD PD2 pin is connected to SD CARD CMD
How to use it ?

In order to make the program work, you must do the following :

  • Open SDIO_ReadWrite.uvprojx from this example folder by Keil MDK5
  • Rebuild all files and load your image into target memory
  • Run the example

    © COPYRIGHT 2023 Megawin Technology