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#!/usr/bin/python3
# -*- coding: utf-8 -*-
import RPi.GPIO as GPIO
import w1thermsensor
import sys, os
from time import sleep
try:
from PySide2.QtWidgets import QApplication
except:
try:
from tkinter import messagebox
messagebox.showinfo("Installazione, attendi prego", "Sto per installare le librerie grafiche e ci vorrà del tempo. Premi Ok e vai a prenderti un caffè.")
pip.main(["install", "PySide2"])
from PySide2.QtWidgets import QApplication
except:
try:
from pip._internal import main
main(["install", "PySide2"])
from PySide2.QtWidgets import QApplication
except:
sys.exit(1)
from PySide2.QtUiTools import QUiLoader
from PySide2.QtCore import QFile
from PySide2.QtCore import Qt
from PySide2.QtCore import Signal
from PySide2.QtWidgets import QLabel
from PySide2.QtWidgets import QMainWindow
from PySide2.QtCore import QThread
toSleep = 10
class TurnOn(QThread):
TempReached = Signal(bool)
def __init__(self, w, addr = ""):
QThread.__init__(self)
self.w = w
self.setTerminationEnabled(True)
self.relaypin = 23
# Numerazione dei PIN GPIO
GPIO.setmode(GPIO.BCM)
# Il pin del relay va in output
GPIO.setup(self.relaypin, GPIO.OUT)
#Cerco il sensore
self.sensor = w1thermsensor.W1ThermSensor()
def __del__(self):
print("Shutting down thread")
def run(self):
self.reachTemp()
return
def readTemp(self):
#Leggo la temperatura
temperature_in_celsius = self.sensor.get_temperature()
print("Temperatura:"+str(temperature_in_celsius)+"° C")
return temperature_in_celsius
def reachTemp(self):
global toSleep
try:
while self.w.SwitchOn.isChecked():
if float(self.readTemp()) < float(self.w.tempImpostata.value()):
# Accendo il relay
GPIO.output(self.relaypin, GPIO.HIGH)
sleep(toSleep)
else:
# Spengo il relay
GPIO.output(self.relaypin, GPIO.LOW)
self.TempReached.emit(True)
except:
self.TempReached.emit(False)
class ShowTemp(QThread):
def __init__(self, w, addr = ""):
QThread.__init__(self)
self.w = w
self.setTerminationEnabled(True)
#Cerco il sensore
self.sensor = w1thermsensor.W1ThermSensor()
def __del__(self):
print("Shutting down thread")
def run(self):
global toSleep
while True:
self.w.tempAttuale.setText(str(self.readTemp())+" °C")
sleep(toSleep)
return
def readTemp(self):
#Leggo la temperatura
temperature_in_celsius = self.sensor.get_temperature()
return temperature_in_celsius
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
file = QFile(os.path.abspath(os.path.dirname(sys.argv[0]))+"/termostato.ui")
file.open(QFile.ReadOnly)
loader = QUiLoader(self)
self.w = loader.load(file)
self.setCentralWidget(self.w)
self.setWindowTitle("Termostato")
self.w.SwitchOn.clicked.connect(self.StopThis)
self.w.tempImpostata.valueChanged.connect(self.setTempImp)
#Devono essere abilitati i 1-Wire
os.system('sudo modprobe w1-gpio')
os.system('sudo modprobe w1-therm')
self.alreadyOn = False
self.w.tempImpostata.setValue(25)
self.setTempImp(25)
self.stoponreached = False
self.getTempThread = ShowTemp(self.w)
self.getTempThread.start()
def itIsOff(self):
self.w.SwitchOn.setChecked(False)
self.StopThis()
def reached(self):
print("Temperatura raggiunta")
if self.stoponreached:
self.itIsOff()
def dostuff(self):
if not self.alreadyOn:
self.myThread = TurnOn(self.w)
self.myThread.TempReached.connect(self.reached)
self.myThread.finished.connect(self.itIsOff)
self.myThread.start()
self.alreadyOn = True
def StopThis(self):
if self.w.SwitchOn.isChecked():
self.w.SwitchOn.setText("Spegni")
self.dostuff()
else:
self.w.SwitchOn.setText("Accendi")
self.alreadyOn = False
def setTempImp(self, arg1):
self.w.tempImpostataLabel.setText(str(arg1)+" °C")
self.dostuff()
if __name__ == "__main__":
app = QApplication(sys.argv)
w = MainWindow()
w.setFixedSize(640,480)
w.show()
sys.exit(app.exec_())
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