11 lines
233 B
Python

import serial.rs485
ser=serial.rs485.RS485(port='/dev/ttyAMA0',baudrate=2400)
ser.rs485_mode = serial.rs485.RS485Settings(False,True)
ser.write('a test'.encode('utf-8'))
while True:
c = ser.read(1)
ser.write(c)
print(c, end='')