树莓派使用带有UART接口发送PELCO-D协议

import time
import serial
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BOARD)
GPIO.setup(7, GPIO.OUT, initial = GPIO.HIGH)
send = serial.Serial(
    port ='/dev/serial0',
    baudrate = 9600,
    parity=serial.PARITY_NONE,
    stopbits=serial.STOPBITS_ONE,
    bytesize=serial.EIGHTBITS,
    timeout=1 
    )
i = [255,1,0,4,63,0]
for x in i:
  send.write(bytes([x]))
 time.sleep(0.1)
GPIO.output(7, GPIO.LOW)
GPIO.cleanup()