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I have Rock Pi S V13, that has 4 UART ports. I'm already connecting to the board via serial console on /dev/ttyS0. How can I find out what are the other ports assignments/paths? I have tried to use a Python script to detect the output by using an FTDI to USB board with no luck (the voltage and baudrate are correct). The Python script taken from manual: import serial import time # I've tried /dev/ttyS2 and /dev/ttyS4 ser = serial.Serial(port='/dev/ttyS4', baudrate=115200, timeout=0.1) print(ser.name) try: while True: ser.write(b'hello') time.sleep(0.5) except KeyboardInterrupt: ser.close() Running outputs and outputs

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