I am trying to set up the FPV telemetry radios (Air and Ground Module 433MHz).

1. I have connected the Ground module to my laptop (USB) and air module to Raspberry Pi 4 UART pins.
2. Using Mission planner I was able to configure the settings of the radios. I can confirm the connection by the green solid led light on both the modules.
3. I use the mission planner terminal to send the data from ground
   module to air module and test the connection.When I send some command (e.g, help), I can see red led light blinking on both air and ground module indicating data is received.

Now, I need to capture the data sent by the ground module and display it on raspberry pi terminal. However, I am unable to achieve this activity. I have searched a lot on this task but could find nothing. It would be really helpful if someone could help me in this regard with any relevant websites/codes available, or steps to solve the issue.

Thanks