#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SH110X.h>
#include <OneWire.h>
#include <DallasTemperature.h>

// I2C OLED Setup 
#define I2C_ADDRESS 0x3C  
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SH1106G display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

// DS18B20 Temperature Sensor Setup 
#define ONE_WIRE_BUS 27  

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

void setup() {
  Serial.begin(9600);
  sensors.begin();

  // Initialize the I2C OLED display; reset = true
  if (!display.begin(I2C_ADDRESS, true)) {  
    Serial.println(F("OLED not found"));
    while (1);  // Pause if OLED is not detected
  }

  // Display startup message
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(SH110X_WHITE);
  display.setCursor(0, 10);
  display.println("Starting...");
  display.display();
  delay(2000);
}

void loop() {
  // Request temperature from DS18B20
  sensors.requestTemperatures();
  float tempC = sensors.getTempCByIndex(0);

  // Print temperature to Serial Monitor
  Serial.print("Temperature: ");
  Serial.print(tempC);
  Serial.println(" C");

  // Display temperature on the OLED 
  display.clearDisplay();
  display.setTextSize(2);
  display.setCursor(0, 10);
  display.print("Temp: ");
  display.print(tempC, 1);  // Print with one decimal place
  display.println(" C");
  display.display();

  delay(1000);
}