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

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
#define SCREEN_ADDRESS 0x3C  // I2C address for the OLED display (adjust if needed)
#define PIR_SENSOR_PIN 34    // Analog pin connected to PIR sensor

// Create an instance of the OLED display
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

void setup() {
  Serial.begin(115200);
  
  // Initialize the OLED display
  if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;);
  }
  
  // Clear the display and set up initial display settings
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.println(F("PIR Sensor Readings"));
  display.display();
}

void loop() {
  int sensorValue = analogRead(PIR_SENSOR_PIN);  // Read the analog value from PIR sensor
  
  // Clear the display before updating
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.print(F("PIR Sensor Value: "));
  display.println(sensorValue);
  display.display();
  
  delay(500);  // Update the display every 500 milliseconds
}