//queue method
  #include "freertos/FreeRTOS.h"
  #include "freertos/task.h"
  #include "freertos/queue.h"
  #include "driver/gpio.h"

  #define LED_GPIO           2
  #define INITIAL_DELAY_MS   1000
  #define DELAY_INCREMENT_MS 5000
  #define THRESHOLD_MS       10000     // Total run time before delay change

  QueueHandle_t delayQueue;  // Queue to send updated delay (in ticks)

  void blink_task(void *pvParam) {
      gpio_reset_pin(LED_GPIO);
      gpio_set_direction(LED_GPIO, GPIO_MODE_OUTPUT);

      TickType_t delayTicks = pdMS_TO_TICKS(INITIAL_DELAY_MS);
      xQueueOverwrite(delayQueue, &delayTicks);  // Prime queue with initial delay

      while (1) {
          // Check if queue has a new delay value
          TickType_t newDelay;
          if (xQueueReceive(delayQueue, &newDelay, 0) == pdTRUE) {
              delayTicks = newDelay;
          }

          // Blink LED ON
          gpio_set_level(LED_GPIO, 1);
          vTaskDelay(delayTicks);

          // Blink LED OFF
          gpio_set_level(LED_GPIO, 0);
          vTaskDelay(delayTicks);
      }
  }

  void timer_task(void *pvParam) {
      // Wait for 10 seconds
      vTaskDelay(pdMS_TO_TICKS(THRESHOLD_MS));

      // Send upgraded delay
      TickType_t upgradedDelay = pdMS_TO_TICKS(INITIAL_DELAY_MS + DELAY_INCREMENT_MS);
      xQueueOverwrite(delayQueue, &upgradedDelay);

      vTaskDelete(NULL);  // Optional: self-destruct the timer task
  }

  void app_main(void) {
      delayQueue = xQueueCreate(1, sizeof(TickType_t));  // Queue holds 1 delay value

      xTaskCreate(blink_task, "Blink Task", 2048, NULL, 5, NULL);
      xTaskCreate(timer_task, "Timer Task", 1024, NULL, 6, NULL);
  }