#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <ezButton.h>
#define DEBOUNCE_TIME 50 // the debounce time in millisecond, increase this time if it still chatters
#define SCREEN_WIDTH 128 // OLED display width,  in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
ezButton button(23); // create ezButton object that attach to pin GPIO21
int count=0;
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup() {
  Serial.begin(9600);
  Serial.println("hello starting");
  button.setDebounceTime(50); // set debounce time to 50 milliseconds
  // 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.setTextSize(1);         // set text size
  oled.setTextColor(WHITE);    // set text color
  oled.setCursor(0, 10);       // set position to display
  oled.println("esp32io.com"); // set text
  oled.display();              // display on OLED
}

void loop() {
  button.loop(); // MUST call the loop() function first
   if (button.isPressed()){
    Serial.println("The button is pressed");
    Serial.println(count);
    count++;}
  if (button.isReleased()){
    Serial.println("The button is released");
     oled.clearDisplay();
  oled.setCursor(0, 30);       // set position to display
  oled.println(count); // set text  
  oled.display();}
}