AXM0F343 uart interrupt - read single char (AXM0F343-64-1-TX40)

Hello
we are new to AXM0F343-64-1-TX40

  1. Can you please show us a simple Single char read by uart interrupt .
  2. How Do we define the call back ?
  3. What example code best to implement the code .

thanks in advanced
Yaniv