What does 'invalid header file' indicate when using IRremote package?

Projects Programming
1

I'm trying to create a circuit on Tinkercad that can receive and decode input from an IR Remote. However, it's currently returning an error, "invalid header file", which is quite informative towards locating the problem. I believe the main problem is the usage of the IRremote package, since the problem only came up when I was implementing it, and I'm new to using this package. Any help is greatly appreciated. Thank you!

#include <Adafruit_LiquidCrystal.h>
#include <IRremote.hpp>
// Initialize the LCD, specifying the I2C address (usually 0x27 or 0x3F)
Adafruit_LiquidCrystal lcd(0);

const int irPin1 = 9; // PIR Sensor 1 Output
const int irPin2 = 10; // PIR Sensor 2 Output
const int ledPin1 = 4;  // LED for Parking Spot 1 
const int ledPin2 = 5;  // LED for Parking Spot 2
const int irReceiverPin = 2; // IR receiver pin

int button = 0;
bool manualControl1 = false; // Flag for manual control of LED 1
bool manualControl2 = false; // Flag for manual control of LED 2

// Map the IR code to the corresponding remote button.
int mapCodeToButton(unsigned long code) {
  if ((code & 0x0000FFFF) == 0x0000BF00) {
    code >>= 16;
    if (((code >> 8) ^ (code & 0x00FF)) == 0x00FF) {
      return code & 0xFF;
    }
  }
  return -1;
}

int readInfrared() {
  int result = -1;
  if (IrReceiver.decode()) {
    unsigned long code = IrReceiver.decodedIRData.decodedRawData;
    result = mapCodeToButton(code);
    IrReceiver.resume();
  }
  return result;
}

void setup() {
  Serial.begin(9600);
  pinMode(irPin1, INPUT);
  pinMode(irPin2, INPUT);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  IrReceiver.begin(irReceiverPin, ENABLE_LED_FEEDBACK);
  
  lcd.begin(16, 2);
  lcd.print("Available Spots:");
}

void loop() {
  button = readInfrared();
  int availableSpots = 0;
  
  // Read the sensor states
  int sensor1State = digitalRead(irPin1);
  int sensor2State = digitalRead(irPin2);
  
  // Debouncing delay
  delay(50);

  // Check parking spot 1
  if (sensor1State == LOW && !manualControl1) {
    digitalWrite(ledPin1, HIGH); // Parking spot 1 available
    availableSpots++;
  } else if (!manualControl1) {
    digitalWrite(ledPin1, LOW); // Parking spot 1 occupied
  }

  // Check parking spot 2
  if (sensor2State == LOW && !manualControl2) {
    digitalWrite(ledPin2, HIGH); // Parking spot 2 available
    availableSpots++;
  } else if (!manualControl2) {
    digitalWrite(ledPin2, LOW); // Parking spot 2 occupied
  }

  // Process IR remote control buttons
  if (button != -1) {
    switch (button) {
      case 0: // Example button code for turning off LED 1
        manualControl1 = true;
        digitalWrite(ledPin1, LOW);
        break;
      case 1: // Example button code for turning on LED 1
        manualControl1 = true;
        digitalWrite(ledPin1, HIGH);
        break;
      case 2: // Example button code for disabling manual control of LED 1
        manualControl1 = false;
        break;
      case 3: // Example button code for turning off LED 2
        manualControl2 = true;
        digitalWrite(ledPin2, LOW);
        break;
      case 4: // Example button code for turning on LED 2
        manualControl2 = true;
        digitalWrite(ledPin2, HIGH);
        break;
      case 5: // Example button code for disabling manual control of LED 2
        manualControl2 = false;
        break;
    }
  }

  // Print the number of available spots to the Serial Monitor
  Serial.print("Available Parking Spots: ");
  Serial.println(availableSpots);
  
  // Display the number of available spots on the LCD
  lcd.setCursor(0, 1); // Move cursor to the second line
  lcd.print("     "); // Clear previous value (optional but may cause flicker)
  lcd.setCursor(0, 1);
  lcd.print(availableSpots);
  
  delay(500);
}
2

my Adafruit_LiquidCrystal.h will not work,
i replace it with LiquidCrystal_I2C.h and get no error.

3

I have no idea how it worked, but I included this, and it seemed to resolve the problem

#define DECODE_NEC
#define IR_RECEIVE_PIN      2
#define EXCLUDE_UNIVERSAL_PROTOCOLS   // Saves up to 1000 bytes program space.
#define EXCLUDE_EXOTIC_PROTOCOLS      // saves around 650 bytes program space if all other protocols are active