Add Buzzer funtion

Buzzer.py

@@ -0,0 +1,64 @@
+import os
+import time
+
+class Buzzer:
+
+    def __init__(self):
+        self.pwm0_path = "/sys/class/pwm/pwmchip0/"
+        os.system("echo 0 > " + self.pwm0_path + "export")
+        os.system("echo 1000000 > " + self.pwm0_path + "pwm0/period")
+
+    def settingPeriod(self, period):
+        os.system("echo " +  period + "  > " + self.pwm0_path + "pwm0/period")
+
+    def settingDutyCycle(self, cycle):
+        os.system("echo " +  cycle + "  > " + self.pwm0_path + "pwm0/duty_cycle")
+
+    def enablePwm(self, msg):
+        if msg == True:
+            os.system("echo 1 > " + self.pwm0_path + "pwm0/enable")
+        else:
+            os.system("echo 0 > " + self.pwm0_path + "pwm0/enable")
+
+    def on(self):
+        self.enablePwm(True)
+
+    def off(self):
+        self.enablePwm(False)
+
+    def beep(self):
+        self.settingDutyCycle("500000")
+        self.settingPeriod("1000000")
+        self.on()
+        time.sleep(0.15)
+        self.off()
+
+    def beepOpen(self):
+        self.settingDutyCycle("0")
+        self.settingPeriod("1000000")
+        self.on()
+        self.settingDutyCycle("400000")
+        time.sleep(0.1)
+        self.settingDutyCycle("500000")
+        time.sleep(0.1)
+        self.settingDutyCycle("600000")
+        time.sleep(0.1)
+        self.off()
+
+    def beepErr(self):
+        self.settingPeriod("10000000")
+        self.settingDutyCycle("5000000")
+        self.on()
+        time.sleep(0.5)
+        self.off()
+
+    def beepPicture(self):
+        self.settingPeriod("100000000")
+        self.settingDutyCycle("50000000")
+        self.on()
+
+if __name__=="__main__":
+    buzzer = Buzzer()
+    buzzer.beepPicture()
+    time.sleep(3)
+    buzzer.off()

Keypad.py

@@ -1,12 +1,14 @@
 import os
 import serial
+from Buzzer import Buzzer
 
 class Keypad:
     dev = '/dev/ttyUSB0'
     baud = 9600
     def __init__(self):
         self.serial = serial.Serial(self.dev, self.baud)
         self.serial.flush()
+        self.buzzer = Buzzer()
 
     def lcdWrite(self, firstString, secondString):
         sendMsg = firstString + ':' + secondString + '\n'
@@ -27,6 +29,7 @@ def read(self):
                 pw = list();
                 while True:
                     ch = self.serial.read().decode("utf-8")
+                    self.buzzer.beep()
                     print (ch)
                     pwChar = pwChar + '*'
                     self.lcdWrite("PASSWORD", pwChar)

Launcher.py

@@ -2,13 +2,15 @@
 from Keypad import Keypad
 from FaceAuth import FaceAuth
 from SettingParser import SettingParser
+from Buzzer import Buzzer
 import os
 import time
 
 settingParser = SettingParser()
 redisClient = RedisClient()
 faceAuth = FaceAuth(settingParser.read()['FACE_API_KEY'])
 keypad = Keypad()
+buzzer = Buzzer()
 
 while True:
     time.sleep(2)
@@ -21,7 +23,9 @@
         if remoteFaceId == 'None':
             keypad.lcdWrite("Face Auth", "Not have image")
             continue
+        buzzer.beepPicture()
         localFaceId = faceAuth.takePicture()
+        buzzer.off()
         if localFaceId == 'None':
             keypad.lcdWrite("Face Auth", "try again..")
             print ('Cannot find face')
@@ -30,11 +34,13 @@
         if result == True:
             # Open door
             keypad.openDoor()
+            buzzer.beepOpen()
             time.sleep(1)
             keypad.lcdWrite("Face Auth", "Welcome!")
             print ('Open Door')
         elif result == False:
             # Not You
+            buzzer.beepErr()
             keypad.lcdWrite("Face Auth", "try again..")
             print ('Face Auth Error')
     else:
@@ -44,6 +50,7 @@
             time.sleep(1)
             keypad.lcdWrite("Password Auth", "Welcome!")
             print ('Open Door')
+            buzzer.beepOpen()
         elif localPassword == settingParser.read()['MASTER_PW']:
             keypad.openDoor()
             time.sleep(1)
@@ -59,4 +66,5 @@
         else:
             # Not You
             print ('Password Auth Error')
+            buzzer.beepErr()
             keypad.lcdWrite("Password Auth", "Fail! try again")