STLINK-V3-MINIE UART weirdness

[Ruggs]

Hello all and happy holidays,

 

I am having a bit of weirdness going on.

 

I have setup UART using stm32 HAL, confirmed it is working properly by stepping through (using an STLINK-V3-MINIE) as well as confirmed data is on the wire with a logic analyzer as well as a scope.

 

Furthermore, I have also run a loopback test to assure the com port is working for the V3-MINIE.

 

Despite this, I still can't get transmission to show up in my serial terminal (I did receive the message once but I beleive it was in a GDB session and I have not been able to replicate it since).

 

Any suggestions for anyone who has run into a similar issue with this device (for context I am using an STM32F411CEU6 black pill board)? I can provide any extra context where needed but I have run through the motions and still cannot seem to come to a solution.

 

 

[TDK]

What terminal program are you using? Some terminal programs don't show output until you send a newline.

[Ruggs]

I am running Tera Term (I've also tried PuTTY with the same result and double checked all terminal settings).

[Andrew Neil]

Do you have another USB-to-UART converter to try?

Do you have a genuine ST board to try?

[Ruggs]

I think it also could have been that I was using USB C to C cable for the STLINK when I tried to swap the wires previously (I read that it requires a USB A to C cable in the documentation earlier so swapped it).