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STM32-Disco429 SDIO + SD CARD init

Question asked by TiiberSeptim on Sep 20, 2014
Latest reply on Oct 21, 2014 by Montassar BEN ROMDHANE

Micro controller = STMF32DISCO429.
SD card reader = SD/MMC CARD BREAKOUT BOB-12941

SD CARD = 16mb Hp invent Sandisk card 0210ln
Library = STM32Cube_FW_F4_V1.3.0

Hello, ive been trying to set up a sd card just so i can read and initialize it, below is my attached code and how im going about it all, ive noticed on this forum that there have been alot of errors with the cube libary and the SDIO, ive noticed that PC10 SDIO_D02 is also connect to the LCD which can be problematic, is my initialization code correct or am i missing something? i seem to be getting the timeout errors and the code is sitting in

 while((timeout > 0) && (!tmp))

under "stm32F4xx_hal_sd.c", any help would be greatly appreciated!, is it possible the sd card is to old? ive wired up the sd accordingly with the appropriate pullup resistors of 47k, unfortunately i don't have access to a oscilloscope :( any guidance on where i can start understanding why its failing to read the SD card? what are some appropriate testing methods that can help me pinpoint the problem?


//----- code -------

  /* Add your application code here
   SD_HandleTypeDef a;
  HAL_SD_CardInfoTypedef b;
     GPIO_InitTypeDef GPIO_InitStructure;
     a.Instance = NULL;
     GPIO_InitStructure.Pin = GPIO_PIN_8 | GPIO_PIN_9 |GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12;
     GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
  GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStructure.Pull = GPIO_PULLUP;
     GPIO_InitStructure.Alternate = GPIO_AF12_SDIO;
  HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);

     //cmd line
     GPIO_InitStructure.Pin = GPIO_PIN_2;
     GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
  GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
  GPIO_InitStructure.Pull = GPIO_NOPULL;
     GPIO_InitStructure.Alternate = GPIO_AF12_SDIO;
  HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);

//init card