#include <Wire.h>
#include <QMC5883LCompass.h>

QMC5883LCompass compass;
String direccio = "";

const unsigned long interval = 250;
unsigned long previousMillis = 0;
unsigned long currentMillis = 0;
int a;

volatile bool interruptFlag = false;

void compassInterrupt() {
  interruptFlag = true;
}

void setup() {
  pinMode(23, OUTPUT);
  pinMode(22, INPUT);
  Serial.begin(115200);
  Wire.begin();
  compass.init();

  // Attach an interrupt to the compass data ready pin
  attachInterrupt(digitalPinToInterrupt(22), compassInterrupt, FALLING);
}

void loop() {
  // Continuously read compass data
  compass.read();
  //a = compass.getAzimuth();
  a= random(0,360);
  if (a < 0) {
    a = a + 360;
  }

  if ((a >= 157.5) && (a < 202.5)) {
    direccio = "Sur";
  } else if ((a >= 202.5) && (a < 247.5)) {
    direccio = "Suroeste";
  } else if ((a >= 247.5) && (a < 292.5)) {
    direccio = "Oeste";
  } else if ((a >= 292.5) && (a < 337.5)) {
    direccio = "Noroeste";
  } else if ((a >= 337.5) || (a < 22.5)) {
    direccio = "Norte";
  } else if ((a >= 22.5) && (a < 67.5)) {
    direccio = "Noreste";
  } else if ((a >= 67.5) && (a < 112.5)) {
    direccio = "Este";
  } else if ((a >= 112.5) && (a < 157.5)) {
    direccio = "Sureste";
  }

  Serial.println(direccio);

  // Check for the specific condition and execute the code without delay
  if (interruptFlag && direccio == "Norte") {
    digitalWrite(23, LOW); // Turn off the LED
    interruptFlag = false; // Reset the flag
  } else {
    digitalWrite(23, HIGH); // Turn on the LED
  }

  // Your other non-interrupt, non-blocking code can go here
}