UART reception isssue

[Nour]

Hello everyone,

I am working with a STM32WB5MMDK. I want to use the USART to print a message on Tera Term but i just have inversed triangles instead of "Hello world". I checked and both Tera Term and USART1 have the same parameters (baud rate, etc). I find it weird that i have a succession of triangles, and the other subjects related don't mention that.

Does anyone know how to fix this ?

Thank you

[Andrew Neil]

What board are you using? 

Does it have an external crystal on it?

[JJhin.1]

Teala's point also considerable.. if you're having onboaard TTL to RS32 converter IC you have to use RS32 only ... if you're board is not having TTL to R232 coverter then you should use USB to UART bridge coverter ... otherwise you'll face garbage data issues 

[Nour]

Thank you for your help, i will try your ideas!