Hello, I’m working on a light intensity monitoring system using `BeagleBone Black` and a Esp32. How do I set up `UART` communication between `BeagleBone Black` and `Esp32`?

Because am receiving no data from microcontroller, I have checked checked `UART` pin connections and baud rate settings.

     # BeagleBone Black Python code
     import serial
     ser = serial.Serial('/dev/ttyO1', 9600)
     while True:
         if ser.in_waiting > 0:
             light_level = ser.readline().decode('utf-8').strip()
             print(f"Light Level: {light_level}")