nucleo-64 UART problem

[Loodan22]

I tried sample uart example with my stm32f401RE and saw my serial monitor weird things

[KnarfB]

check that the baud rates (speed) on the board and PC/terminal prog. match

hth

KnarfB

[Peter BENSCH]

...maybe also the parity.

[Loodan22]

baud rates and parity same board and terminal

[S.Ma]

Did you oscilloscope probe the RX and TX pin between the STLink and the STM32F401 ?

[Tesla DeLorean]

For strings use strlen(), perhaps wrap the string output as a function, so you have to copy-n-paste less code, and make less mistakes.

Check baud rate, and general configuration of UART, and PC side equivalent. The baud rate on the NUCLEO USB CDC changes those of the hard UART on the ST-LINK/V2-1, so it is more critical than other "virtual" serials used in other Arduino boards.

[Loodan22 · Accepted solution]

fixed it without doing anything

I don't understand why