#!/usr/bin/env python

import os
import sys
import serial
import base64
from time import sleep

ser = serial.Serial('/dev/ttyUSB1', 38400, timeout=0.5, rtscts=0)

count = 10000
i = 0
error_count = 0
error_size = 0
size = 0
while i < 10000 :
    i += 1
    #sleep( 5 )
    string = base64.urlsafe_b64encode(os.urandom(10))
    #string = 'abcdefgh'
    ser.write(string)
    length = len(string)
    size += length
    print i, "[ ", length, " B ]: ", string
    #if ser.read(8) != 'abcdefgh':
    if ser.read(length) != string:
        error_count += 1
        error_size += length

print 'error count: %i/%i, error size: %i/%i' % (error_count, count,
        error_size, size)


sys.exit(0)