I have interfaced SD card to my ATmega16 controller & i am able to read & write in its sector. I am using following code http://www.captain.at/electronic-atmega-mmc.php
I am using same interface as in above link but 9 & 8 line pulled up to 3.3V.
But when i tries to go for FAT to read text file, my card is not initialising & not responding properly, i used many code lib in net but nothing worked.
Can any one on this forum can share there working code.
It will be very helpful to me.