#include <Adafruit_GFX.h>
#include <Adafruit_PCD8544.h>

Adafruit_PCD8544 display = Adafruit_PCD8544(3,4,5,6,7);

int second,minute, hour, day, mounth,year; 
unsigned long UtlTime; 

void setup() 
pinMode(2,OUTPUT);
UtlTime=0;   {   

minute=0;   
hour=0;   
day=0;   
mounth=0;   
year=0;   
Serial.begin(9600);   
  display.begin();
  display.setContrast(50); // Adjust the display contrast
  display.clearDisplay();   //Apaga o buffer e o display
  display.setTextSize(1);  //Seta o tamanho do texto
  display.setTextColor(BLACK); //Seta a cor do texto      

   
display.print(" date e hour ");   
display.setCursor(0,10);   
display.print(" com Arduino");   
display.display();
delay (5000); 


//Configura o minute   
display.clearDisplay();   
display.setCursor(0,0);   
display.print("minute: ");
display.display();
Serial.print("\nin between minute:");  
while(minute==0)   {     
if (Serial.available() > 0)     
{       
minute= Serial.parseInt();     
}   
}   
display.print(minute);   
display.display();
delay(1000); 

//Configura a hour   
display.clearDisplay();   
display.setCursor(0,0);   
display.print("hour: ");   
display.display();
Serial.print("\nin between hour:"); 
while(hour==0)   
{     
if (Serial.available() > 0)     
{       
hour= Serial.parseInt();     
}   
}   
display.print(hour);   
display.display();
delay(1000);    

//Configura o day   
display.clearDisplay();   
display.setCursor(0,0);   
display.print("day: ");
display.display();   
Serial.print("\nin between day:");   
while(day==0)   
{     
if (Serial.available() > 0)     
{       
day= Serial.parseInt();     
}   
}   
display.print(day);   
display.display();
delay(1000);    

//Configura o mês   
display.clearDisplay();   
display.setCursor(0,0);   
display.print("mounth: "); 
display.display();  
Serial.print("\nin between mounth:");  
while(mounth==0)   
{     
if (Serial.available() > 0)     
{       
mounth= Serial.parseInt();     
}   
}   
display.print(mounth);  
 display.display();
delay(1000);    

//Configura o year   
display.clearDisplay();   
display.setCursor(0,0);   
display.print("year: ");   
display.display();
Serial.print("\nin between year:");   
while(year==0)   
{     
if (Serial.available() > 0)     
{       
year= Serial.parseInt();     
}   
}   
display.print(year);   

display.display();   
delay(1000);
display.clearDisplay(); 

} 

void loop() 
{   

if(millis()-UtlTime<0)   
{     
UtlTime=millis();   
}   
else   
{     
second=int((millis()-UtlTime)/1000);   
}   
if(second>59)   
{     
second=0;     
minute++;     
UtlTime=millis();     
if(minute>59)     
{       
hour++;       
minute=0;       
if(hour>23)       
{         
day++;         
hour=0;         
if(mounth==1||mounth==3||mounth==5||mounth==7||mounth==8||mounth==10||mounth==12)         
{           
if(day>31)           
{             
day=1;             
mounth++;             
if(mounth>12)             
{               
year++;               
mounth=1;             
}           
}         
}         
else if(mounth==2)         
{           
if(year%400==0)           
{             
if(day>29)             
{               
day=1;               
mounth++;             
}           
}           
else if((year%4==0)&&(year%100!=0))           
{             
if(day>29)             
{              
day=1;               
mounth++;             
}           
}           
else           
{             
if(day>28)             
{               
day=1;               
mounth++;             
}           
}         
}         
else         
{           
if(day>30)           
{             
day=1;             
mounth++;           
}         
}       
}     
}   
}    

display.clearDisplay(); 
delay(1000); 
Serial.print(day);   
Serial.print("/");   
Serial.print(mounth);   
Serial.print("/");   
Serial.print(year);   
Serial.println();      

display.setCursor(0,0);   
display.print("date ");   
display.print(day);   
display.print("/");   
display.print(mounth);   
display.print("/");   
display.print(year);

 
display.display();
Serial.print(hour);   
Serial.print(":");   
Serial.print(minute);   
Serial.print(":");   
Serial.print(second);   
Serial.print("\n");   
Serial.println();      

display.setCursor(0,10);   
display.print("hour ");   
display.print(hour);   
display.print(":");   
display.print(minute);   
display.print(":");   
display.print(second); 
display.display();
char tecla;
tecla = Serial.read();
if(tecla=='1'){
digitalWrite(2,LOW);
}
if(tecla=='2'){
  digitalWrite(2, HIGH);
}

}