component/bt: support BLE Read Attribute value by UUID

components/bt/host/bluedroid/api/include/api/esp_gap_ble_api.h

@@ -1310,13 +1310,12 @@ esp_err_t esp_gap_ble_set_channels(esp_gap_ble_channels channels);
 *
 * @param[in]       bd_addr: BD address of the peer device.
 * @param[out]      authorize: Authorized the link or not.
-* 
+*
 * @return          - ESP_OK : success
 *                  - other  : failed
 *
 */
 esp_err_t esp_gap_ble_set_authorization(esp_bd_addr_t bd_addr, bool authorize);
-
 #ifdef __cplusplus
 }
 #endif

components/bt/host/bluedroid/api/include/api/esp_gattc_api.h

@@ -613,6 +613,29 @@ esp_err_t esp_ble_gattc_read_char (esp_gatt_if_t gattc_if,
                                    uint16_t handle,
                                    esp_gatt_auth_req_t auth_req);
 
+/**
+ * @brief           This function is called to read a service's characteristics of
+ *                  the given characteristic UUID
+ *
+ * @param[in]       gattc_if: Gatt client access interface.
+ * @param[in]       conn_id : connection ID.
+ * @param[in]       start_handle : the attribute start handle.
+ * @param[in]       end_handle : the attribute end handle
+ * @param[in]       uuid : The UUID of attribute which will be read.
+ * @param[in]       auth_req : authenticate request type
+ *
+ * @return
+ *                  - ESP_OK: success
+ *                  - other: failed
+ *
+ */
+esp_err_t esp_ble_gattc_read_by_type (esp_gatt_if_t gattc_if,
+                                      uint16_t conn_id,
+                                      uint16_t start_handle,
+                                      uint16_t end_handle,
+                                      esp_bt_uuid_t *uuid,
+                                      esp_gatt_auth_req_t auth_req);
+
 /**
  * @brief           This function is called to read multiple characteristic or
  *                  characteristic descriptors.