generalpower.py

#!/usr/bin/python3
import serial
import cherrypy
import threading
import time
import datetime
import queue

ser = serial.Serial('/dev/ttyACM0', 9600, timeout=1)

blink=0
lastquery=0


def serialread():  #Continuous loop to read serial
	global blink
	while True:
		line=ser.readline()
		serRead=line.decode('utf-8')

		if serRead == "b\r\n":                                  #Start of frame
			blink = blink + 1
			print(blink)

def failsafe(): #If no web reading in last 15 seconds, delete data
	while True:
		global lastquery
		global blink
		if time.time() - lastquery > 12:
			blink=0
			print("reset")
		time.sleep(0.1) 

class Web(object):
	@cherrypy.expose
	def query(self,reset=0):
		global blink
		global lastquery
		count = blink #Write an actual number if reset
		if reset == "1":
			lastquery = time.time()
			blink=0
		return str(count)

serialreadThread = threading.Thread(target=serialread)
serialreadThread.start()

failsafeThread = threading.Thread(target=failsafe)
failsafeThread.start()

cherrypy.server.socket_host = "0.0.0.0"
cherrypy.server.socket_port = 8081
cherrypy.quickstart(Web())