如何构建十六进制命令并将其发送到电视 [英] How to build and send hex commands to TV

问题描述

我有一台 NEC PX-42VM5HA 等离子电视，我试图用连接的计算机控制它.我有数据表，其中显示了控制电视和协议信息的所有代码.我不确定如何在 python 中构建正确的数据结构来发送 HEX 控制代码.下面是电源控制代码和通信协议.

I have an NEC PX-42VM5HA plasma tv that I am trying to control with the connected computer. I have the data sheet that shows all the codes to control the tv and the protocol information. I am unsure how to build the right data structure in python to send the HEX control codes. Below is the Power Control Codes and the Communications Protocol.

Communication Protocol:
    Interface: RS-232C
    Communication: Asynchronous
    Baud Rate: 9600
    Data Length: 8bits
    Parity: Odd
    Stop Bit: 1bit
    Communication Code: Hex

Power Control Codes
    ON          9FH 80H 60H 4EH 00H CDH
    OFF         9FH 80H 60H 4FH 00H CEH

这是我到目前为止的代码:

Here is the code I have so far:

import time
import serial

ser = serial.Serial(
    port='COM1',
    baudrate=9600,
    parity=serial.PARITY_ODD,
    stopbits=serial.STOPBITS_ONE,
    bytesize=serial.EIGHTBITS
)

ser.close()
ser.open()
ser.isOpen()

ON=bytearray([0x9FH,0x80H,0x60H,0x4EH,0x00H,0xCDH])
OFF=bytearray([0x9FH,0x80H,0x60H,0x4FH,0x00H,0xCEH])

ser.write(OFF)
time.sleep(30)
ser.write(ON)
ser.close()

推荐答案

将控制代码写成字符串

ON = "\x9f\x80\x60\x4e\x00\xcd"
ser.write(ON)

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