UART Communication - STM32H745I-DISCO via ST-LINK

[fru999]

Hey everyone,

I want an UART communication between my PC and my STM32H745 Disco board. 

By default the UART 3 (connected to STLINK connector) is one core M4. 

My baud rate is 115200. My pins are initialized by default. 

My main is this :

and the hal_uart_transmit function returns HAL_OK.
On my computer, with Putty, i can't see the data sent. 

Can you help me with this ? 🙂

[KDJEM.1]

Hello @fru999 ,

Please make sure that the UART configuration in your code matches the settings in Putty: baud rate, word length, parity.

Could you please take a look at this wiki: Step3 Introduction to the UART may help.

Thank you.

Kaouthar

[fru999 · Accepted solution]

Pin pour UART 3 sur STM32H745 DISCO sont :

TX : PB10 

RX : PC11