# -*- coding: utf-8 -*-

import socket

TCP_ADDR = '10.2.2.250'
TCP_PORT = 8899

PACK_LEN = 11

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

s.settimeout(30)

s.connect((TCP_ADDR, TCP_PORT))

bytes_data = zeros(PACK_LEN,int)


while True:
    str_data = s.recv(PACK_LEN) #this should probably have a timeout
    hex_data = str_data.encode('hex')

    for n in range(0,PACK_LEN): #convert to array of bytes
        lower = 2*n
        upper = lower + 2
        bytes_data[n] = int(hex_data[lower:upper],16)


    humid =  (((bytes_data[6])<<8)+(bytes_data[7]))/10.0
    temp =  (((((bytes_data[8])&0x7F)<<8)+(bytes_data[9]))/10.0)

    if int(bytes_data[8]) & 0x80: #invert temp if sign bit is set
        temp = -1.0* temp

    checksum = (uint(sum(bytes_data[0:10])) & 0xFF)+1

    if checksum == bytes_data[10]:
        print "Valid!"
        print "Temp: " + str(temp)
        print "Hum: " + str(humid)
    else:
        print "Invalid. :("