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CubeMX 4.22.1 and SD card FatFs problem

Question asked by Costas Papachristou on Oct 25, 2017
Latest reply on Nov 2, 2017 by Costas Papachristou

Hi, I'm currently trying to make SD card work with FatFS on a custom made PCB with STM32F429. I create the init files with CubeMX 4.22.1 and although I set the SD interface to be 4 bits long, I find this code in the stm32f4xx_hal_sd.c


/* Default SDIO peripheral configuration for SD card initialization */
  Init.ClockEdge           = SDIO_CLOCK_EDGE_RISING;
  Init.ClockBypass         = SDIO_CLOCK_BYPASS_DISABLE;
  Init.ClockPowerSave      = SDIO_CLOCK_POWER_SAVE_DISABLE;
  Init.BusWide             = SDIO_BUS_WIDE_1B;            // <--- shouldn't this be SDIO_BUS_WIDE_4B ????????
  Init.ClockDiv            = SDIO_INIT_CLK_DIV;


Also, the same thing  appears in MX_SDIO_SD_Init function created by CubeMX in main.c


/* SDIO init function */
static void MX_SDIO_SD_Init(void)


  hsd.Instance = SDIO;
  hsd.Init.ClockEdge = SDIO_CLOCK_EDGE_RISING;
  hsd.Init.ClockBypass = SDIO_CLOCK_BYPASS_DISABLE;
  hsd.Init.ClockPowerSave = SDIO_CLOCK_POWER_SAVE_DISABLE;
  hsd.Init.BusWide = SDIO_BUS_WIDE_1B;               // <--- shouldn't this be SDIO_BUS_WIDE_4B ????????
  hsd.Init.HardwareFlowControl = SDIO_HARDWARE_FLOW_CONTROL_DISABLE;
  hsd.Init.ClockDiv = 32;




I'm asking this because HAL_SD_ConfigWideBusOperation (found in bsp_driver_sd.c) fails with error despite correcting these 2 mistakes, so I wonder if more mistakes are present that prevent SD card from initializing correctly.


I have also worked in the past with Atmel AVR and fatfs with success, so this is not the first time I have designed PCB or dealt with fatfs. Any clues?