mcpc_serial.py

import sys, time
import serial

def convertCmdToBytes(str_cmd):
  if(str_cmd[-1] != '\r'):
    str_cmd += '\r' # Cmd MUST end in carriage return
  cmd_bytearray = bytes(str_cmd, 'utf-8')
  # Return array of individual byte literals
  individual_bytes = [cmd_bytearray[i:i+1] for i in range(len(cmd_bytearray))]
  return individual_bytes

try:
  baudrate = 230400
  ser = serial.Serial('COM5', baudrate=baudrate, timeout=1)
  # cmd = 'usbid\r'
  cmd = 'read\r'
  for b in convertCmdToBytes(cmd):
    ser.write(b)
    time.sleep(0.001) # Delay between sending consecutive bytes
  line = ser.readline()
  print(line)

except KeyboardInterrupt:
  print('bye')
  sys.exit(0)