UART data not matching

[Ranjeet Singh]

data on serial  monitor

 

tera term setting 

what is the reason of data mis matching ?

 

 

[LCE]

Check the TeraTerm Setup / Terminal settings "Coding (receive / transmit)".

And do you have any proof that sprintf is working correctly?

Try sending some pure ASCII string directly with HAL_UART_Transmit.

[FBL]

Hello @Ranjeet Singh,

Could you specify which STM32 product/ board are you using? 

[Ranjeet Singh]

NUCLEO-WB55RG

[JTP1]

Hello

You have different paritysettings. Put parity none to code or parity odd to your terminal settings.

Br J.T

[Ranjeet Singh]

putt the parity non now the result is 

 

 

 

[JTP1]

What about baudrate in terminal, now its 115k2 in mcu 

[Tesla DeLorean]

Currently outputting in the equivalent to 7O1 mode, disable parity on the STM32 (NONE) so it is using 8N1 mode

[Ranjeet Singh]

putt the parity none,now the result is 

 

 

[Ayoub Cheggari]

Hi,

I actually use Hercules as Serial Monitor over Tera Term! 

Ayoub

[Tesla DeLorean]

How exact are you wiring this? Using the ST-LINK VCP, or an external dongle or converter?

The pin outputs are at CMOS level, not compatible with RS232 levels/connectivity.

Send a 0x55 pattern repeatedly, check signal with a scope, confirm baud rate, ie 4800 Hz squarewave is 9600 baud.