import serial
print (serial.__version__)
#3.4
ser = serial.Serial(
    port='/dev/ttyUSB0',
    baudrate=1000000,
    parity=serial.PARITY_NONE,
    stopbits=serial.STOPBITS_ONE,
    bytesize=serial.EIGHTBITS,
    timeout = None
    #timeout = 1
)

while 1:
    a = ser.read()
    b = ser.read()
    if int(b.encode('hex'),16) == 0xFD:
     print("Buffer request from Master to Slave addr =", hex(int(a.encode('hex'), 16)), " Raw = ", hex(int(a.encode('hex'), 16)),  hex(int(b.encode('hex'), 16)))
    else:
     if int(b.encode('hex'),16) == 0xFC:
      c = ser.read()
      print("Set address frame from Master, new addr =", hex(int(c.encode('hex'), 16)), " Raw = ", hex(int(a.encode('hex'), 16)),  hex(int(b.encode('hex'), 16)),hex(int(c.encode('hex'), 16)))
     else:
      if int(b.encode('hex'),16) == 0xFE:
       c = ser.read()
       print("Data frame to address =", hex(int(a.encode('hex'), 16)), " Raw = ", hex(int(a.encode('hex'), 16)),  hex(int(b.encode('hex'), 16)),hex(int(c.encode('hex'), 16)))
       c = ord(c)
       while(c):
         d = ser.read()
     print hex(int(d.encode('hex'), 16))
     c=c-1
      else:
        print ("WRONG FRAME Raw=",hex(int(a.encode('hex'), 16)),  hex(int(b.encode('hex'), 16)))