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Hardware/Updated HW codes/NewMotorFunc.py

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+import RPi.GPIO as GPIO
+import pyrebase          # u need to install Pyrebase module firstly
+from time import sleep
+
+class Motor:
+    
+    
+    print("Starting of the program")
+    
+    def __init__(self):
+        
+        config = {     
+          "apiKey": "AIzaSyAdL0W5HscjEDFPK4BDi6Cnc7FLa30GPYY",
+          "authDomain": "vehicleantitheftrecognition.firebaseapp.com",
+          "databaseURL": "https://vehicleantitheftrecognition.firebaseio.com/",
+          "storageBucket": "vehicleantitheftrecognition.firebaseapp.com"
+        }
+
+        self.firebase = pyrebase.initialize_app(config)
+        
+        GPIO.setmode(GPIO.BCM)
+        GPIO.setwarnings(False)
+    
+        #preset GPIO ports for 2 motors
+        self.Motor1 = {'EN': 25, 'input1': 24, 'input2': 23}
+        self.Motor2 = {'EN': 17, 'input1': 27, 'input2': 22}
+        
+        # preset the port for buttons and alarm
+        GPIO.setup(5,GPIO.IN)     # start motor button, initially True
+        GPIO.setup(13,GPIO.IN)    # stop motor button, initially True
+        GPIO.setup(16,GPIO.IN)    # start alarm button, initially True
+        GPIO.setup(26,GPIO.OUT)   # alarm output
+        
+        for x in self.Motor1:
+            GPIO.setup(self.Motor1[x], GPIO.OUT)
+            GPIO.setup(self.Motor2[x], GPIO.OUT)
+
+        #utilize PWM function, enable motors and frequency is 100Hz
+        self.EN1 = GPIO.PWM(self.Motor1['EN'], 100)    
+        self.EN2 = GPIO.PWM(self.Motor2['EN'], 100)    
+
+        self.EN1.start(0)                    
+        self.EN2.start(0)
+        
+        #stop signals for motors and alarm
+        self.motorStop=False
+        self.alarmStop=False
+        
+     
+    
+# new update motor and alarm functions, are able to connect embedded system throught firebase
+
+    def start_motor(self):
+        
+        self.motorStop=self.stop_motor()
+        
+        while (not self.motorStop) or (not GPIO.input(5)): #break the loop when motor stop signal is detected
+            
+            self.motorStop=self.stop_motor()
+
+    
+    def stop_motor(self):
+        
+        database = self.firebase.database() # get alarm on/off signal from firebase
+        signals = database.child("signal")
+        motorSignal = signals.child("1").child("motor").get().val()
+        
+        
+        if (motorSignal=="off") or (not GPIO.input(13)):
+            print("stopping motor...")
+            self.EN1.ChangeDutyCycle(0)
+            self.EN2.ChangeDutyCycle(0)
+            print("motor stops")
+            return True
+        elif motorSignal=="on":
+            
+            self.EN1.ChangeDutyCycle(50)
+            self.EN2.ChangeDutyCycle(50)
+
+            GPIO.output(self.Motor1['input1'], GPIO.HIGH)
+            GPIO.output(self.Motor1['input2'], GPIO.LOW)
+                
+            GPIO.output(self.Motor2['input1'], GPIO.HIGH)
+            GPIO.output(self.Motor2['input2'], GPIO.LOW)
+            
+            print("motor is turned on")
+            return False
+
+    
+    def start_alarm(self):
+        
+        self.alarmStop=self.stop_alarm()
+        
+        while (not self.alarmStop) or (not GPIO.input(16)): # if alarmStop is False or button is pressed
+#                                                           # enter the loop
+            self.alarmStop=self.stop_alarm()                # infinitely check if alarmStop True
+            
+                                                            # break the loop if alarm is turned off
+    def stop_alarm(self):
+        
+        database = self.firebase.database() # get alarm on/off signal from firebase
+        signals = database.child("signal")
+        alarmSignal = signals.child("1").child("alarm").get().val()
+
+        if alarmSignal=="off":
+            print("Alarm turning off...")
+            self.alarmStop=True
+            GPIO.output(26,False)
+            print("Alarm is off")
+            return True
+        elif alarmSignal=="on":
+            GPIO.output(26,True)
+            print("Alarm is turned on")
+            return False
+
+        
+if _name__=="__main_":
+        
+    #print("Execute function...")
+        
+    
+    motor1=Motor()
+    
+    while True: # turn on the system forever
+        
+        motor1.start_alarm() # alarm on/off test
+        motor1.start_motor() # motor on/off test