Secure keypad

Dependencies:   Keypad TextLCD mbed

Revision:
1:5461144fd540
Parent:
0:93cb8707aa8c
--- a/main.cpp	Mon Apr 23 01:23:45 2018 +0000
+++ b/main.cpp	Thu Apr 26 18:44:07 2018 +0000
@@ -22,6 +22,7 @@
 DigitalOut led_green(LED_GREEN);
 DigitalOut active_buzzer(PTC4);  //Buzzer on pin PTC4=D9
 
+PwmOut beep(PTC4); // buzzer
 
 //Serial pc(USBTX, USBRX);
 
@@ -42,7 +43,7 @@
     led_red = 0;
     active_buzzer = 0;
 
- 
+    beep.period(0.001);
 
     lcd.cls();
     wait(0.001);
@@ -159,7 +160,8 @@
             }
 
             wait(1);
-            active_buzzer = 0;
+            active_buzzer = 1;
+            beep = 80.3/100.0;
             led_red = 0;
             wait(1);
        lcd.cls();
@@ -173,9 +175,11 @@
             led_green = 1;
             wait(1);
             led_green = 0;
-            
+            active_buzzer = 0;
+            beep = 0.0/100.0;
         }
-
+        
+        beep = 0.0/100.0;
 
     }
 }