UART Icommunication in stm32f3 discovery and pc (serial terminal) not working

[sudheer_kmn]

Hi ,

My Requirement is communication between micro controller and Serial terminal(putty) using UART Communication.

I have taken example project of UART( two board communication using DMA)...i have defined #define TRANMIT_BOARD 1. 

but I am not able to communicate my serial terminal(putty not able ).

observation:

1. hal_urt_tranmit_dma its returning HAL_oK

2. PUTTY terminal not receiving any data.

in Example project any modification required?

[Ozone]

Are the output levels appropriate ? You cannot drive RS232 with 3.3V digital levels.

Are the lines properly connected (Rx / Tx crossed) ?

Baudrates are matching ?

Checked the signals with a scope ?

[sudheer_kmn]

I just shorted PD0.6 and PD0.7 (tx and rx pin) in STM32F3 Micro-controller.

and obeserving putty terminal.

if i write something in serial terminal same char should display right in putty console?