I haven't got any code. I have successfully used the FatFS with the Renesas USB Stack. I used the FatFS stack as I also wanted to use some on board Serial EEPROM and Serial Ram as FatFs as well so that file management between the various devices becomes trivial. I have not implemented SD card. The problem you are having is not with the FatFS you have not got far enough to be getting problems with that. You have to realise that an SD card is not like serial memory, it responds to commands being sent to it. If I wrote code to save to the SD card the first thing it would have to do is initialise to card and send the CMD0. This is exactly where you are with FatFS and are having no response. This is why I believe you are either having hardware problems or you have not configured the ports correctly. This is why I wanted to see the scope shots as If I had the same problem I would be looking at the SPI bus to see if it was responding correctly. Can you get a contractor in your location to come in a handle this problem for you. Paul.
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