127 lines
4.1 KiB
Python
127 lines
4.1 KiB
Python
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("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("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
|