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