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

#define int radious = 10
const uint8_t buttonPins[] = {0};

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;); // Don't proceed, loop forever
  } 

  display.clearDisplay();
  display.setTextSize(1);           
  display.setTextColor(SSD1306_WHITE); 
  display.println("Iniciando pantalla...");

  pinMode(buttonPins[0], INPUT_PULLUP);
}

/*void drawpoint()
{
  display.clearDisplay();

  for (int x = 0; x < SCREEN_WIDTH; x++) {
    for (int y = 0; y < SCREEN_HEIGHT; y++) {
      // Limpiar buffer
      display.clearDisplay();
      // Dibujar un píxel
      display.drawPixel(x, y, SSD1306_WHITE);
      // Enviar a pantalla
      display.display();
    }
  }
}*/

/*void drawCoordinate(int x, int y)
{
    // Limpiar buffer
      display.clearDisplay();
      // Dibujar un píxel
      display.drawPixel(x, y, SSD1306_WHITE);
      // Enviar a pantalla
      display.display();
}*/

void drawCircle(int x, int y, int r)
{
  display.clearDisplay();
  //display.drawCircle(x, y, r, SSD1306_WHITE);
  display.fillCircle(x, y, r, SSD1306_WHITE);
  //display.fillCircle(x, y, r, SSD1306_WHITE);
  display.display();
}

byte readButton() {
  while (true) {
    /*for (byte i = 0; i < 4; i++) {
      byte buttonPin = buttonPins[];
      if (digitalRead(buttonPin) == LOW) {
        return i;
      }
    }*/
    byte buttonPin = buttonPins[0];
    if (digitalRead(buttonPin) == LOW){
      return 0;
    }
    delay(1);
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  drawCircle(40, 40, 10);
  delay(500); // this speeds up the simulation
}