does a 32GByte ultra SD work in FatFS ?

[Trevor Jones]

I have a shiny new Samsung EVO 32GB formated as 29.8GB Fat32

will it work ?

I have a H743

tried the FatFS application

it doesn't find the card.

FATFS_LinkDriver fails

[Trevor Jones]

Cant go anywhere now, this has us stuck in HardFault... but I added as the second MPU access request:

void MPU_Config(void)
{
  MPU_Region_InitTypeDef MPU_InitStruct = {0};
 
  /* Disables the MPU */
  HAL_MPU_Disable();
  /** Initializes and configures the Region and the memory to be protected 
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.BaseAddress = 0x24000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_512MB;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /** Initializes and configures the Region and the memory to be protected 
  */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER7;
  MPU_InitStruct.BaseAddress = 0x60000000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_32B;
  MPU_InitStruct.SubRegionDisable = 0x0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
 
  HAL_MPU_ConfigRegion(&MPU_InitStruct);
  /* Enables the MPU */
  HAL_MPU_Enable(MPU_HFNMI_PRIVDEF);
 
}

[Trevor Jones]

updated it to MPU_REGION_FULL_ACCESS , still hardfaults... on sprintf(string

still reporting

res = 12 f_getfree

before hardfault on this line:

switch(fs->fs_type) but seems to be a little random...

[Tesla DeLorean]

In Keil I had to move the stack/heap to 0x24000000

Would honestly recommend using polled mode, for safety

Keil project, password your first name, lower case