BLE loop use (#1882)

esphome/components/esp32_ble/ble_descriptor.h

@@ -16,22 +16,31 @@ class BLEDescriptor {
  public:
   BLEDescriptor(ESPBTUUID uuid, uint16_t max_len = 100);
   virtual ~BLEDescriptor();
-  bool do_create(BLECharacteristic *characteristic);
+  void do_create(BLECharacteristic *characteristic);
 
   void set_value(const std::string &value);
   void set_value(const uint8_t *data, size_t length);
 
   void gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param);
 
+  bool is_created() { return this->state_ == CREATED; }
+  bool is_failed() { return this->state_ == FAILED; }
+
  protected:
   BLECharacteristic *characteristic_{nullptr};
   ESPBTUUID uuid_;
   uint16_t handle_{0xFFFF};
-  SemaphoreHandle_t create_lock_;
 
   esp_attr_value_t value_;
 
   esp_gatt_perm_t permissions_ = ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE;
+
+  enum State : uint8_t {
+    FAILED = 0x00,
+    INIT,
+    CREATING,
+    CREATED,
+  } state_{INIT};
 };
 
 }  // namespace esp32_ble