micro sd problem

[mahmoud boroumand]

Posted on February 18, 2018 at 09:33

hello 

i use stm32f107vct6 and stm32f103c8 and keil v5.

i use rl-keil for initial micro sd and work good.

but sometimes (its very random on 1 minute or many hour) memory doesn't work and i can't read and write.

i confused because i used that code 3 month ago and work without any problem and i don't change anything(just compile code again).

i thing maybe problem was in board so i create new pcb but on two micro and two pcb i have same problem.

anybody can help me?

thanks