#include <OneWire.h>   // in Farenheit

#define DS18B20_PIN 2

OneWire oneWire(DS18B20_PIN);

void printAddress(uint8_t deviceAddress[8]) {
  for (uint8_t i = 0; i < 8; i++) {
    if (deviceAddress[i] < 16) Serial.print("0");
    Serial.print(deviceAddress[i], HEX);
    Serial.print(" ");
  }
}

float getTemperature() {
  byte data[9];
  byte addr[8];

  oneWire.reset_search();
  if (!oneWire.search(addr)) {
    Serial.println("No more addresses.");
    oneWire.reset_search();
    delay(1000);
    return -127.0; // Return an error value
  }

  if (OneWire::crc8(addr, 7) != addr[7]) {
    Serial.println(" CRC is not valid!");
    return -127.0; // Return an error value
  }

  oneWire.reset();
  oneWire.select(addr);
  oneWire.write(0x44, 1);  // start conversion, with parasite power on at the end
  delay(750);  // Wait for the conversion to complete (adjust as needed)

  oneWire.reset();
  oneWire.select(addr);
  oneWire.write(0xBE);  // Read Scratchpad

  for (byte i = 0; i < 9; i++) {
    data[i] = oneWire.read();
  }

  int16_t temperatureInt = (data[1] << 8) | data[0];
  float temperatureCelsius = temperatureInt / 16.0;

  // Convert Celsius to Fahrenheit
  float temperatureFahrenheit = (temperatureCelsius * 9.0 / 5.0) + 32.0;

  return temperatureFahrenheit;
}

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

void loop() {
  float temperature = getTemperature();

  if (temperature != -127.0) {
    Serial.print("Temperature: ");
    Serial.print(temperature, 2);
    Serial.println(" °F");
  }

  delay(5000);  // wait 5 seconds for the next measurement
}