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

YAY.1
Senior

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 ???

14 REPLIES 14

I agree.

It's not about C or assembler, it's about self-documenting coding style.

BTW, you can try to loop back the UART for testing, i.e. connecting Rx to Tx.

How can i that ?

Can you explain ?

YAY.1
Senior

I think there is no hardware problem ..

What is alternative function low register or high register   ?

I did not touch this settings , can the problem be because of this ???

New cod and this is bluetoth rc car project:

YAY.1
Senior

It doesn't work again.

Pls help.........

Final cod:

YAY.1
Senior

NOW, every thing is fine.

It is working...

Final cod that is working :::grinning_face: