SDIO CTIMEOUT: Command response timeout

Posted on April 20, 2015 at 01:44

I'm using library only as a reference, so am writing simple test codes to understand guts of STM32F4xx. It is turn of SDIO.

So far I'm able to read and write single block to SDHC card. My question to you is what should I do to prevent  CTIMEOUT(Command response timeout) fault? Step by step using debugger I don't have such issue but as soon as I'm running the same code without breakpoints - here is my fault.

On this forum I found topic:

/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=https%3a//my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/SD%20Command%20Timeout&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&currentviews=416

, but it doesn't tell what to do to prevent this issue.

Thanks in advance.

#stm32f4-sdio-ctimeout