Problem in Interfacing SD card to STM32f103ZET6 Development board

[renukaradhya]

Posted on June 26, 2015 at 14:19

Hi, i want to interface SD card to the STM32F103ZET6 controller, as i know we can interface using SDIO or SPI mode, SDIO is working fine i can read and write data to the SD card from array contains static data but i want to write .txt file data to the SD card, can anybody suggest me how to create, write and read data from text file to the SD card. 

[Tesla DeLorean]

Posted on June 26, 2015 at 15:48

Use FatFs?

[renukaradhya]

Posted on June 27, 2015 at 06:42

Thank you clive, i already gone through FATs but its little confusing can you help me out to overcome my problem, i have also attached some example codes can you please correct me where i'm doing mistake in it.

________________ Attachments : SD_Read_File_SPI_FAT32.rar : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006Hzu5&d=%2Fa%2F0X0000000bQy%2FCjalJaJYIn_pC6_b7YEkPVDQSTT3o.fhZv.NPx3WehQ&asPdf=false

[Tesla DeLorean]

Posted on June 27, 2015 at 07:20

What specifically is giving you an issue?

[renukaradhya]

Posted on June 27, 2015 at 08:02

actually i have two text files wangbao.txt and test.txt in project folder, when i try to open file to read or write using below snippet f_open returns FR_NOT_READY error code

  res1 = f_open(&fdst, ''wangbao.txt'', FA_CREATE_ALWAYS | FA_WRITE); res = f_open(&fsrc, ''test.txt'', FA_OPEN_EXISTING | FA_READ);i think i have to create above said text files in SD cards it seems.

[renukaradhya]

Posted on July 09, 2015 at 08:26

Hi clive, I am facing problem in opening the file usign f_open, the error code is FR_NO_FILESYSTEM and it is  due to No valid FAT patition is found, can you guide me how to resolve the above error successfully, I have already formatted my SD card twice as FAT32 file system.