#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED width,  in pixels
#define SCREEN_HEIGHT 64 // OLED height, in pixels

// create an OLED display object connected to I2C
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

int segundos = 0;
int minutos = 0;

void setup() {
  Serial.begin(9600);
  // initialize OLED display with I2C address 0x3C
  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("failed to start SSD1306 OLED"));
    while (1);
  }

  delay(2000);         // wait two seconds for initializing
  oled.clearDisplay(); // clear display
  oled.setTextColor(WHITE);    // set text color
}

void loop() {

  oled.setTextSize(1);  
  oled.setCursor(20, 2);  
  oled.println("Bom dia"); // dependendo da hora pode ser mostrado msgs diferentes

  oled.setTextSize(2);         
  oled.setCursor(100, 40);      
  oled.println(segundos); 
  
  oled.setCursor(88, 40);      
  oled.println(":"); 
  
  oled.setCursor(64, 40);      
  oled.println(minutos); 

 



  oled.display();             
  segundos++;
  if(segundos >= 60){
    segundos = 0;
    minutos++;
  }
  
  
  delay(5);
  oled.clearDisplay();
}