#!/usr/bin/python

import serial
import sys

from chirp import util

s = serial.Serial(port=sys.argv[1], baudrate=9600)
s.setTimeout(.25) # Return whatever we have read if wait is >1 sec
#s.setParity("E")

count = 0

while True:
    data = s.read(256) # Read up to 256 bytes
    if data:
	block_length = len(data)
	if block_length == 8:
		print "Header Received: %s\n" % (util.hexprint(data))
		s.write("\x06") # Send ACK
                print "ACK sent"
                s.read(1) # Chew up that ACK, because the cables echo them
        else:
        	print "Received %i bytes:\n%s" % (len(data), util.hexprint(data))
        	s.write("\x06") # Send ACK
		print "ACK sent"
        	s.read(1) # Chew up that ACK, because the cables echo them
		count += 1
		print "Block Count: %i\n\n" % (count)
    else:
        # No data
        print "Received nothing..."