hdmi_matrix.py

#!/usr/bin/env python3
import serial
import time
import sys

ser = serial.Serial('/dev/ttyS4')

cmd = [
	['a09', 'a1D', 'a1F', 'a0D'],
	['a17', 'a12', 'a59', 'a08'],
	['a5E', 'a06', 'a05', 'a03'],
	['a18', 'a44', 'a0F', 'a51']
]

def usage():
	print("Usage: {} [input] [output]".format(sys.argv[0]))

if len(sys.argv) != 3:
	usage()
	exit(1)

if (not sys.argv[1].isnumeric() or len(sys.argv[1]) != 1 or int(sys.argv[1]) < 1 or int(sys.argv[1]) > 4):
	usage()
	print("[input] must be between 1-4")
	exit(1)

if (not sys.argv[2].isnumeric() or len(sys.argv[2]) != 1 or int(sys.argv[2]) < 1 or int(sys.argv[2]) > 4):
	usage()
	print("[output] must be between 1-4")
	exit(1)

ser.write(cmd[int(sys.argv[1])-1][int(sys.argv[2])-1].encode('ASCII'))
time.sleep(0.5)