improved key scan further:added reboot possibility by input of # times pin length

FingerprintDoorbell/lib/Keypad/src/Keypad.cpp

@@ -82,10 +82,14 @@ bool Keypad::getKeys() {
 // Private : Hardware scan
 void Keypad::scanKeys() {
 	// Re-intialize the row pins. Allows sharing these pins with other hardware.
+	for (byte r=0; r<sizeKpd.rows; r++) {
+		pin_mode(rowPins[r],OUTPUT);
+		pin_write(rowPins[r],HIGH);
+	}
+	delayMicroseconds(3);	// Let pins settle.
 	for (byte r=0; r<sizeKpd.rows; r++) {
 		pin_mode(rowPins[r],INPUT_PULLUP);
 	}
-	delayMicroseconds(1);	// Let pins settle.
 	// bitMap stores ALL the keys that are being pressed.
 	for (byte c=0; c<sizeKpd.columns; c++) {
 		pin_mode(columnPins[c],OUTPUT);

FingerprintDoorbell/src/main.cpp

@@ -40,7 +40,7 @@ Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
 
 enum class Mode { scan, enroll, wificonfig, maintenance, cooldown };
 
-const char* VersionInfo = "0.5";
+const char* VersionInfo = "0.6";
 
 // ===================================================================================================================
 // Caution: below are not the credentials for connecting to your home network, they are for the Access Point mode!!!
@@ -807,16 +807,26 @@ void keyboardPoller(void){
           pinOK= false;
         }
       }
-      pinpos = 0;
       if(pinOK){
         Serial.println("OPEN!!");
         Match match;
         match.matchName = "KEYPAD";
         openDoor(match);
       }else{
-        Serial.println("WRONG");
+        pinOK = true;
+        PinStr = "#############";
+        for(uint8_t i=0;i<pinpos;i++){
+          uint8_t coosenPinDigit = PinStr.charAt(i);
+          if(pin[i] != coosenPinDigit){
+            pinOK= false;
           }
         }
+        if(pinOK){
+          ESP.restart();
+        }
+      }
+      pinpos = 0;
+    }
   }
 }