Posted on April 30, 2014 at 13:36Hi, I tried to use 1-bit mode in the STM32F429I and the speed was almost the same. I also implemented the same code to the STM32F407-Discovery with the STM32F4-DIS-BB and the speed was also low. Now I will try to u...

Posted on April 29, 2014 at 16:52Hello Clive1, I am having the same issues than asr.ahmed with the sd read/ write speed, I am also using a ''long'' wire with both STM32F429I-DISCO and STM32F4-Discovery and my code for testing the speed only reaches ...