I have not been able to send data to the board (TMDSDOCKF28335) and receive it back in the Testing Environment.

I'm trying to build a firmware aimed at processing a signal received from serial communication by the MCU and, then, send it back to the host PC. The model I made is shown below :

In the output I recieve nothing from here. However, when I replace the SCI Receive block directly with the constant [0.3] then it works fine. So, its clear that either Serial Send or Serial Receive block on the Testing environment is not functioning.

Also, as per the board guide,

I have tried it connecting Jumper J9. It still does not work.

Is there something I'm missing. I would be grateful for any suggestions.

Thank you!