#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Arduino.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET    -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
#define PRESSURE_SENSOR_PIN A0 
#define ONE_WIRE_BUS PA1 
#define BUZZER_PIN PA0
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
const float LOW_PRESSURE_THRESHOLD = 28.0;  
const float HIGH_PRESSURE_THRESHOLD = 35.0; 
void setup() {
  pinMode(PRESSURE_SENSOR_PIN, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  Serial.begin(9600);
  sensors.begin(); 
  if(!display.begin(SSD1306_PAGEADDR, OLED_RESET)) {
    Serial.println(F("SSD1306 allocation failed"));
    while(1);
  }
  display.clearDisplay();
}
float readPressure() {
  int sensorValue = analogRead(PRESSURE_SENSOR_PIN);
  float pressure = map(sensorValue, 0, 1023, 20, 40); 
  return pressure;
}
float readTemperature() {
  sensors.requestTemperatures();
  float temperature = sensors.getTempCByIndex(0); 
  return temperature;
}
void displayData(float pressure, float temperature) {
  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.print("Tire Pressure: ");
  display.print(pressure);
  display.println(" psi");
  display.setCursor(0, 16);
  display.print("Temperature: ");
  display.print(temperature);
  display.println(" C");
  display.display();
}
void alertCheck(float pressure) {
  if (pressure < LOW_PRESSURE_THRESHOLD || pressure > HIGH_PRESSURE_THRESHOLD) {
    digitalWrite(BUZZER_PIN, HIGH); 
  } else {
    digitalWrite(BUZZER_PIN, LOW); 
  }
}
void loop() {
  float pressure = readPressure();
  float temperature = readTemperature();
  displayData(pressure, temperature);
  alertCheck(pressure);
  delay(1000); 
}