I have an STM32WB55 to which I need to connect an SD module to store data from some sensors in SPI mode. I basically followed some tutorials and got to the conclusion that fatfs is the way to go.
So, after debugging it step by step I can mount the card, but it does not let me to open it. I always get FR_NOT_READY.
I followed and read all the tutorials on line that I could put my hands on and it is still not working whatever I may do. I suspect that my problem lies within the clock that I need to program. (I don't understand it AT ALL). The guys in the video set one clock to HSE and the other to PLLCLK (check the photos). However when I do this, it returns me some 0xffffff8 error or 0x88888. Is this even possible on this type of microcontroller? Having HSE and PLLCLK together?
This is the tutorial that I am focusing the most on: https://controllerstech.com/sd-card-using-spi-in-stm32/
Here's my code, the clock and my return of FR_NOT_READY.
I am sorry if all of these are stupid questions, but I am so damn lost and I have no clue what to do, as I literally read everything I could find, and it either didn't help much or I didn't understand it enough in order for it to be helpful.
/* USER CODE BEGIN 0 */
FATFS fs; //file system
FIL fil; // file
FRESULT fresult; //to store the result
FATFS *pfs;
/* USER CODE END 0 */
/* USER CODE BEGIN 2 */
fresult = f_mount(&fs, "/", 0); //here is either 1 or 0, not sure. on the video it was 0, on the internet it was 1
/****************************** PUTS and GETS ************************************************/
//THIS CREATES THE FILE OR IT OPENS IT IF IT WASN'T ALREADY CREATED
fresult = f_open(&fil, "file1.txt", FA_OPEN_ALWAYS | FA_READ | FA_WRITE);
//WRITING TEXT TO THE FILE
fresult = f_puts("TEXT HERE FOR THE FILE", &fil);
/* Close file */
f_close(&fil);
/* Close file */
f_close(&fil);
//
/* USER CODE END 2 */
