Why cortex m4 (stm32 discovery) usart3 is not working ??? (SOFTWARE)

[YAY.1]

Hello,

I have a problem,i wrote this program but it dosen't work.

It doesn't read its rx pin.

Can you help me pls ???

[YAY.1]

NOW, every thing is fine.

It is working...

Final cod that is working :::grinning_face: