smartParking/iNode/parking.py

#!/usr/bin/env python

import time
import serial
import requests

API_ENDPOINT = 'http://192.168.1.13:8080/parkingStatus'
parkingCode = "1"
ser = serial.Serial(
    port='/dev/ttyACM0',
    baudrate = 9600,
    parity=serial.PARITY_NONE,
    stopbits=serial.STOPBITS_ONE,
    bytesize=serial.EIGHTBITS,
    timeout=1
)
counter=0

prev_status = ser.readline()
while 1:
    park_status = ser.readline()
    try:
        if park_status != prev_status:
            if b'1' in park_status:
                data = """{"no":""" + parkingCode + ""","status":1}"""
                r = requests.post(url = API_ENDPOINT, data = data)
                print("parking reserved. RESPONSE :", r.status_code, "\n")
            elif b'0' in park_status:
                data = """{"no":""" + parkingCode + ""","status":0}"""
                r = requests.post(url = API_ENDPOINT, data = data)
                print("parking not reserved. RESPONSE : ", r.status_code, "\n")
    except NameError:
        print("**Not already prev variable.\n")
    prev_status = park_status