#include <Arduino_FreeRTOS.h>  // FreeRTOS library for Arduino
#include <semphr.h>           // For semaphore functions

// Variables
SemaphoreHandle_t semaphore; // Declare the semaphore
volatile int i = 0;          // Shared variable updated in ISR
volatile int j = 0;          // Counter for cycles
volatile int x[8] = {0};     // Array initialized to 0

// ISR
void ISR_Handler() {
  i++;
  xSemaphoreGiveFromISR(semaphore, NULL); // Give semaphore from ISR
}

// Task1
void Task1(void *pvParameters) {
  int w = 0;
  for (;;) {
    if (xSemaphoreTake(semaphore, portMAX_DELAY) == pdTRUE) { // Wait for semaphore
      if (i > 7) {
        i = 0;
        j++;
      }
      x[i] = j; // Update array

      // Print the values of x for debugging
      Serial.print("x array: ");
      for (int k = 0; k < 8; k++) {
        Serial.print(x[k]);
        w++;
        Serial.print(w);
      }
      Serial.println();
    }
  }
}

void setup() {
  // Initialize serial for debugging
  Serial.begin(9600);

  // Create semaphore and initialize it to BUSY
  semaphore = xSemaphoreCreateBinary();
  if (semaphore == NULL) {
    Serial.println("Failed to create semaphore!");
    while (1);
  }

  // Start semaphore as BUSY
  xSemaphoreTake(semaphore, 0);

  // Attach the ISR
  attachInterrupt(digitalPinToInterrupt(2), ISR_Handler, RISING);

  // Create Task1
  xTaskCreate(Task1, "Task1", 128, NULL, 1, NULL);

  // Start the FreeRTOS scheduler
  vTaskStartScheduler();
}

void loop() {
  // This will remain empty as tasks are handled by FreeRTOS
}