#include <LiquidCrystal_I2C.h>
#include <SPI.h>
#include <Wire.h> // Library komunikasi I2C 
#include <EEPROM.h>

#define ResetButton A0
#define PlusButton A1
#define MinButton A2
LiquidCrystal_I2C lcd = LiquidCrystal_I2C(0x27, 16, 2); 

int rom =0;
byte val = 0;
byte valPlus = 0;
byte valMin = 0;
const int SensorPin = 5;   
int count=0;
int state = LOW;
void setup() 
{
              Serial.begin(9600);
              lcd.begin(16,2);
              lcd.backlight();
              lcd.clear();
              lcd.print("COUNT ROBOT WELDING"); 
              lcd.setCursor(0, 1); 
              lcd.print("READY....");
              delay(5000);
              lcd.clear();
             
             
              lcd.print("COUNTING"); 
              lcd.setCursor(0, 1); 
              lcd.print("PCS :");
              lcd.print(count);
                                        
              //server.begin();
              pinMode(SensorPin, INPUT_PULLUP); 
              pinMode(ResetButton, INPUT_PULLUP);
              pinMode(PlusButton, INPUT_PULLUP);
              pinMode(MinButton, INPUT_PULLUP);
}
void loop() {
int value = digitalRead(SensorPin);                                                                          
                   if (value != state){
                      state=value;
              if (state==LOW){                  
                count ++ ;
                delay(1000); 
                Serial.println(count);                                                                     
                              
                lcd.clear();
                lcd.print("COUNT-ROBOT"); 
                lcd.setCursor(0, 1); 
                lcd.print("PCS :");                                 
                lcd.print(count); 
                                 
              }     
                   }
                                              
            val = digitalRead(ResetButton); 
            valPlus = digitalRead(PlusButton);
            valMin = digitalRead(MinButton); 
             if ( valPlus == LOW ) {
             
                      count = count +1;  
                     Serial.println(count); 
                      lcd.clear();                                 
                      lcd.print("COUNT-ROBOT"); 
                      lcd.setCursor(0, 1); 
                      lcd.print("PCS :");                                  
                      lcd.print(count);
                      delay(500);
                      EEPROM.put(rom, count); 
                                     
             }
            if ( valMin == LOW ) {      
                
                      count = count -1;
                     Serial.println(count);
                      lcd.clear();                                 
                      lcd.print("COUNT-ROBOT"); 
                      lcd.setCursor(0, 1); 
                      lcd.print("PCS :");                                  
                      lcd.print(count);
                      delay(500);
                      EEPROM.put(rom, count); 
                        
            }                
            if ( val == LOW ) {      
               
                      count=0;
                      Serial.println(count);
                      lcd.clear();                     
                      lcd.print("COUNT-ROBOT"); 
                      lcd.setCursor(0, 1); 
                      lcd.print("PCS :");                                  
                      lcd.print(count);
                      delay(100);
                          
                          EEPROM.write(rom, 0);
                          
                    }
}