#include <Arduino.h>

// Include the libraries we need
#include <OneWire.h>
#include <DallasTemperature.h>

// Data wire is plugged into port 2 on the Pico
#define ONE_WIRE_BUS 17

// External timer pin
const int inputPin = 21;

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);

/*
 * The setup function. We only start the sensors here
 */
void setup(void)
{
  pinMode(LED_BUILTIN, OUTPUT);
  // start serial port
  Serial.begin(9600);
  Serial.println("Dallas Temperature IC Control Library Demo");

  // Start up the library
  sensors.begin();

  // Configure the timing pin as an input with an internal pull-down resistor.
  // This ensures the pin reads LOW when no signal is present.
  pinMode(inputPin, INPUT_PULLDOWN);
}

/*
 * Main function, get and show the temperature
 */
void loop(void)
{
  // Read the state of the pin
  int sensorValue = digitalRead(inputPin);

  // Check if the pin is HIGH
  if (sensorValue == HIGH) {
    Serial.println("GPIO 21 is HIGH");
    // Add your HIGH-state logic here
  } else {
    Serial.println("GPIO 21 is LOW");
  }

  // Small delay to prevent flooding the serial monitor
  delay(100);

  // call sensors.requestTemperatures() to issue a global temperature
  // request to all devices on the bus
  Serial.print("Requesting temperatures...");
  sensors.requestTemperatures(); // Send the command to get temperatures
  Serial.println("DONE");
  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1500);
  digitalWrite(LED_BUILTIN, LOW);   // turn the LED off (HIGH is the voltage level)
  // After we got the temperatures, we can print them here.
  // We use the function ByIndex, and as an example get the temperature from the first sensor only.
  float tempC = sensors.getTempCByIndex(0);
  // Check if reading was successful
  if (tempC != DEVICE_DISCONNECTED_C)
  {
    Serial.print("Temperature for the device 1 (index 0) is: ");
    Serial.println(tempC);
  }
  else
  {
    Serial.println("Error: Could not read temperature data");
  }
}