Peter M. Groen / tty0tty

import serial

serialPort_tnt0 = serial.Serial(port = "/dev/tnt0", baudrate=115200,
                           bytesize=8, timeout=2, stopbits=serial.STOPBITS_ONE)
serialPort_tnt1 = serial.Serial(port = "/dev/tnt1", baudrate=115200,
                           bytesize=8, timeout=2, stopbits=serial.STOPBITS_ONE)
serialPort_tnt0.write(b"hello there \r\n")

while(1):
    # Wait until there is data waiting in the serial buffer
    if(serialPort_tnt1.in_waiting > 0):
        # Read data out of the buffer until a carraige return / new line is found
        serialString = serialPort_tnt1.readline()
        # Print the contents of the serial data
        print(serialString.decode('Ascii'))
        # exit
        break