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app.py
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app.py
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from threading import Lock
from flask import Flask, render_template, session, request, jsonify, url_for
from flask_socketio import SocketIO, emit, disconnect
import time
import math
import random
import Adafruit_DHT as dht
import RPi.GPIO as GPIO
localtime = time.asctime( time.localtime(time.time()) )
GPIO.setmode(GPIO.BOARD)
Tmer = 4
async_mode = None
app = Flask(__name__)
app.config['SECRET_KEY'] = 'secret!'
socketio = SocketIO(app, async_mode=async_mode)
thread = None
thread_lock = Lock()
def background_thread(args):
count = 0
while True:
h, t = dht.read_retry(dht.DHT11, Tmer)
print 'Temp={0:0.1f}*C Humidity={1:0.1f}%'.format(t, h)
file2 = open("log_teplota.txt","a")
file2.write(localtime +' Temp={0:0.1f} *C Humidity={1:0.1f}%'.format(t, h)+'\n')
file2.close()
file3 = open("last_teplota.txt","w")
file3.write(localtime +' Temp={0:0.1f} *C Humidity={1:0.1f}%'.format(t, h))
file3.close()
if args:
A = dict(args).get('A')
else:
A = 1
cas = time.time()
data = t
dataHum = h
socketio.sleep(0.5)
count += 1
socketio.emit('my_response', {'data': data,'dataHum':dataHum, 'count': count, 'time':cas}, namespace='/test')
@socketio.on('my_event', namespace='/test')
def test_message(message):
session['receive_count'] = session.get('receive_count', 0) + 1
session['A'] = message['value']
emit('my_response', {'data': message['value'], 'count': session['receive_count'], 'ampl':1})
@socketio.on('connect', namespace='/test')
def test_connect():
global thread
with thread_lock:
if thread is None:
thread = socketio.start_background_task(target=background_thread, args=session._get_current_object())
emit('my_response', {'data': 'Connected', 'count': 0})
@app.route('/')
def index():
return render_template('tabs.html', async_mode=socketio.async_mode)
@socketio.on('disconnect_request', namespace='/test')
def disconnect_request():
session['receive_count'] = session.get('receive_count', 0) + 1
emit('my_response',
{'data': 'Disconnected!', 'count': session['receive_count']})
disconnect()
@socketio.on('disconnect', namespace='/test')
def test_disconnect():
print('Client disconnected', request.sid)
if __name__ == '__main__':
socketio.run(app, host="0.0.0.0", port=8080, debug=True)