#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_log.h"

#define CONFIG_LOG_MAXIMUM_LEVEL     5

static const char *TAG = "NOTIFY_APP";
static TaskHandle_t b_handle = NULL;  // 任務B的指標

static void task_a(void *arg) {
  while(1) {
    xTaskNotifyGive(b_handle);      // 先向任務B發出通知
    vTaskDelay(pdMS_TO_TICKS(500)); // 等待500ms
  }
}

static void task_b(void *arg) {
  while(1) {
    vTaskDelay(pdMS_TO_TICKS(1000)); // 先延遲1000ms
    uint32_t count = ulTaskNotifyTake(pdFALSE, portMAX_DELAY);
    ESP_LOGI(TAG, "收到通知～計數值：%lu", count);
  }
}

void app_main(void) {
  esp_log_level_set(TAG, ESP_LOG_VERBOSE);
  xTaskCreate(task_b, "Task B", 3000, NULL, 3, &b_handle);
  xTaskCreate(task_a, "Task A", 2000, NULL, 5, NULL);
}