temperature.py

import os
import glob
import time

from flask import Flask, Response, json, render_template

app = Flask(__name__, static_url_path='', static_folder='static', template_folder='static')

os.system('modprobe w1-gpio')
os.system('modprobe w1-therm')

base_dir = '/sys/bus/w1/devices/'
device_folder = glob.glob(base_dir + '28*')[0]
device_file = device_folder + '/w1_slave'

@app.route("/")
def hello():  
    return render_template('index.html')

@app.route("/temp")
def read_temp():
    lines = read_temp_raw()
    while lines[0].strip()[-3:] != 'YES':
        time.sleep(0.2)
        lines = read_temp_raw()
    equals_pos = lines[1].find('t=')
    if equals_pos != -1:
        temp_string = lines[1][equals_pos+2:]
        temp_c = float(temp_string) / 1000.0
        temp_f = temp_c * 9.0 / 5.0 + 32.0
        d = {'temp_c': temp_c, 'temp_f': temp_f}
        return Response(json.dumps(d), mimetype='application/json')

        
def read_temp_raw():
    f = open(device_file, 'r')
    lines = f.readlines()
    f.close()
    return lines

app.run(host='0.0.0.0')