// Code: https://github.com/milesburton/Arduino-Temperature-Control-Library/blob/master/examples/Simple/Simple.ino
// https://github.com/adafruit/Adafruit_SSD1306
// DS18B20: https://github.com/bonnyr/wokwi-ds1820-custom-chip/

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

#define ONE_WIRE_BUS 2
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

#define SCREEN_WIDTH 128 // OLED width,  in pixels
#define SCREEN_HEIGHT 64 // OLED height, in pixels
#define OLED_RESET -1 // Reset pin
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);


void setup(void) {
  Serial.begin(115200);
  sensors.begin();

  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }
  delay(2000);
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);
}

void loop(void) {
  sensors.requestTemperatures();
  float T = sensors.getTempCByIndex(0);

  Serial.print("Celsius temp: ");
  Serial.println(T);

  display.clearDisplay();
  display.setCursor(30, 23);
  display.print(T);
  display.print("C");

  display.display();
  delay(2000);
}