Smart Room

import RPi.GPIO as GPIO
import Adafruit_DHT
import time
import threading
import smtplib
from email.mime.text import MIMEText
from flask import Flask, render_template

dht11 = 17
redLed = 3
greenLed = 5
blueLed = 7

refreshTimer = 30   # 3600 - for 1h

constTemperature = 28
constHumidity = 55

email = 'smartRoom1306B@gmail.com'
password = '13smartRoom06B'
receiver = 'butnarumariana26@gmail.com'

mutex = threading.Lock()

GPIO.setmode(GPIO.BOARD)
GPIO.setup(redLed,GPIO.OUT)
GPIO.setup(greenLed,GPIO.OUT)
GPIO.setup(blueLed,GPIO.OUT)

app = Flask(__name__)

humidity = 0
temperature = 0

@app.route('/')
def index():
    return render_template('index.html', recHumidity = str(humidity), recTemperature = str(temperature))

@app.route('/', methods=['POST'])
def readDataFromSensor():
        global humidity
        global temperature
        humidity, temperature = Adafruit_DHT.read_retry(Adafruit_DHT.DHT11, dht11)
            
        message = ''
        messageEmail = ''
        
        if humidity is not None and temperature is not None:
            message = 'Temperature = ' + str(temperature) + '*C  Humidity = ' + str(humidity) + '%\n'
            
            if humidity <= constHumidity and temperature <= constTemperature:
                messageEmail = message + 'Temperature and humidity are normal'
                print(messageEmail)
                
                GPIO.output(redLed, 1)
                GPIO.output(blueLed, 0)
                GPIO.output(greenLed, 0)
                
            elif humidity > constHumidity and temperature <= constTemperature:
                messageEmail = message + 'The humidity is too high, the dehumidifier starts!'
                print(messageEmail)
                
                GPIO.output(redLed, 0)
                GPIO.output(blueLed, 1)
                GPIO.output(greenLed, 0)
                
                sendEmail(messageEmail)
                
            elif humidity <= constHumidity and temperature > constTemperature:
                messageEmail = message + 'The temperature is too high, the AC starts!'
                print(messageEmail)
                
                GPIO.output(redLed, 0)
                GPIO.output(blueLed, 0)
                GPIO.output(greenLed, 1)
                
                sendEmail(messageEmail)
                
            elif humidity > constHumidity and temperature > constTemperature:
                messageEmail = message + 'The temperature and humidity are too high, the AC and the dehumidifier are turned on!'
                print(messageEmail)
                
                GPIO.output(redLed, 0)
                GPIO.output(blueLed, 1)
                GPIO.output(greenLed, 1)
                
                sendEmail(messageEmail)
        else:
            message = 'Failed to get reading. Try again!'
            print(message)
        return render_template('index.html', recHumidity = str(humidity), recTemperature = str(temperature))

def sendEmail(message):
    global mutex

    mutex.acquire()

    server = smtplib.SMTP('smtp.gmail.com', 587)
    server.starttls()
    server.login(email, password)

    emailMessage = MIMEText(message, 'plain')
    emailMessage['Subject'] = 'Temperature and humidity ratio.'

    server.sendmail(email, receiver, emailMessage.as_string())
    server.quit()

    print('Email sent successfully!')

    mutex.release()
    
if __name__ == '__main__':
    GPIO.output(redLed, 1)
    app.run(host = '0.0.0.0')
    readDataFromSensor()
    GPIO.output(redLed, 0)
    GPIO.cleanup()