arduino thermal

+#include <PString.h>
+#include "Adafruit_Thermal.h"
+#include "adalogo.h"
+#include "adaqrcode.h"
+#include <Wire.h>
+#include "RTClib.h"
+
+RTC_DS1307 RTC;
+
+#include "SoftwareSerial.h"
+#define TX_PIN 2 // Arduino transmit  YELLOW WIRE  labeled RX on printer
+#define RX_PIN 3 // Arduino receive   GREEN WIRE   labeled TX on printer
+
+SoftwareSerial mySerial(RX_PIN, TX_PIN); 
+Adafruit_Thermal printer(&mySerial);   
+
+int hitung=0;
+
+const int buttonPin = 12;
+int buttonState=0;             
+int lastButtonState = LOW;  
+long lastDebounceTime = 0;  
+long debounceDelay = 50;
+
+void setup() {
+   Wire.begin();
+    RTC.begin();
+     if (! RTC.isrunning()) {
+    Serial.println("RTC is NOT running!");
+    
+    RTC.adjust(DateTime(__DATE__, __TIME__));
+  }
+ pinMode(buttonPin, INPUT);
+  
+  pinMode(7, OUTPUT); digitalWrite(7, LOW);
+
+ 
+  mySerial.begin(9600);  // Initialize SoftwareSerial
+  
+  printer.begin();        // Init printer (same regardless of serial type)
+
+  
+  
+}
+
+void loop() {
+  
+  buttonState = digitalRead(buttonPin);
+   if (buttonState == HIGH) {     
+    hitung+=1;
+    char buffer[40];
+  PString str(buffer, sizeof(buffer));
+  if(hitung<100)
+  {
+    str.print(0);
+    if(hitung<10)
+    {
+      str.print(0);
+    }
+  }
+  else if(hitung<10)
+    {
+      str.print(0);
+    }
+  str.print(hitung);
+    printer.printBitmap(adalogo_width, adalogo_height, adalogo_data);
+printer.boldOn();
+  printer.justify('C');
+
+   printer.setSize('S');
+  printer.println(F("Nomor antrian :"));
+ 
+  printer.setSize('L');
+  printer.println(str);
+   printer.setSize('S');
+   printer.boldOn();
+  printer.println(F("wisnu tes..!!"));
+  DateTime now = RTC.now();
+  str.begin();
+  str.print(now.day(), DEC);
+  str.print('-');
+  str.print(now.month(), DEC);
+  str.print('-');
+  str.print(now.year(), DEC);
+  str.print(' ');
+  str.print(now.hour(), DEC);
+  str.print(':');
+  if((now.minute(), DEC)<10)
+  {
+    str.print('0');
+  }
+  str.print(now.minute(), DEC);
+  str.print(':');
+  if((now.second(), DEC)<10)
+  {
+    str.print('0');
+  }
+  str.print(now.second(), DEC);
+  printer.println(str);
+    printer.feed(4);
+  printer.sleep();      
+  delay(3000);         
+  printer.wake();       
+  printer.setDefault(); 
+  
+  } 
+  else {
+   
+  }
+}