listen on network for push of Amazon dash button; this version uses arp-scan instead of scapy

dash-listen-3.py

import subprocess
import requests
import time
import os,sys

MAGIC_FORM_URL = 'http://api.cloudstitch.io/...your_url'

def record_wake():
  data = {
    "Timestamp": time.strftime("%Y-%m-%d %H:%M"), 
    "Measurement": 'woke'
  }
  requests.post(MAGIC_FORM_URL, data)

def record_sleep():
  data = {
    "Timestamp": time.strftime("%Y-%m-%d %H:%M"), 
    "Measurement": 'sleep'
  }
  requests.post(MAGIC_FORM_URL, data)

red_btn = '14:35:18:91:30:68'
green_btn = '64:c8:46:4c:ad:a2'

buttons = [red_btn, green_btn]
sleep_time=15

while True:
    for button in buttons:
        cmd = ['arp-scan', '--interface=en0','10.0.1.0/24', '--retry=1', '-T', button]
        proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        out, err = proc.communicate()

        if red_btn in out:
            print time.strftime("%Y-%m-%d %H:%M:%S") + ",wake"
            record_wake()
            time.sleep(sleep_time)
            break

        if green_btn in out:
            print time.strftime("%Y-%m-%d %H:%M:%S") + ",sleep"
            record_sleep()
            time.sleep(sleep_time)
            break