1-bit SDIO SD Card Interfacing problem in f_open() function for STM32F4 Discovery Board

[laxmimerit]

Posted on July 25, 2016 at 19:21

Hello,

I am using CubeMx to generate 1-bit SDIO SD card code. I have done so much programming using CubeMx and all those codes workfine. But When I generate SD code it is giving error (Hard Fault) at the function f_open(). Here is the code sequence which I used.

res = BSP_SD_Init();
if
(res!=FR_OK)
{
Error_Handler();
} 
res = f_mount(&SDFatFs,
''''
,1);
if
(res!=FR_OK)
{
Error_Handler();
}
res = f_open(&myFile,
''test.txt''
,FA_READ);

it goes into the hard fault at f_open(). Anyone have done SD card with STM32F4?? #stm32f4 #f_open() #sd-card

[Tesla DeLorean]

Posted on July 25, 2016 at 20:20

Make sure you have an adequate stack allocation.

Have a proper Hard Fault Handler so you can see exactly what it is faulting on. If your understand what is faulting you can focus on how to fix it.

[Radosław]

Posted on July 25, 2016 at 22:42

If you use  DMA,  file handlers can be local.... if stack is located in CCRAM

[laxmimerit]

Posted on July 26, 2016 at 09:56

Thanks clive1.