diff --git a/main/ble_gatts_table.c b/main/ble_gatts_table.c
index 6c1ed47..a15a095 100644
--- a/main/ble_gatts_table.c
+++ b/main/ble_gatts_table.c
@@ -1,5 +1,7 @@
 #include "ble_gatts_table.h"
 
+static uint16_t *hid_conn_id;
+
 static uint8_t adv_config_done = 0;
 
 uint16_t heart_rate_handle_table[HRS_IDX_NB];
@@ -438,6 +440,8 @@ static void gatts_profile_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_
         conn_params.timeout = 400;  // timeout = 400*10ms = 4000ms
         // start sent the update connection parameters to the peer device.
         esp_ble_gap_update_conn_params(&conn_params);
+        *hid_conn_id = param->connect.conn_id;
+        // *hid_conn_id = 100;
         break;
     case ESP_GATTS_DISCONNECT_EVT:
         ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_DISCONNECT_EVT, reason = 0x%x", param->disconnect.reason);
@@ -511,10 +515,12 @@ static void gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_
     } while (0);
 }
 
-void ble_init(void)
+void ble_init(uint16_t *conn_id_ble)
 {
     esp_err_t ret;
 
+    hid_conn_id = conn_id_ble;
+
     /* Initialize NVS. */
     ret = nvs_flash_init();
     if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND)
diff --git a/main/ble_gatts_table.h b/main/ble_gatts_table.h
index 4ccf805..26b8958 100644
--- a/main/ble_gatts_table.h
+++ b/main/ble_gatts_table.h
@@ -54,4 +54,4 @@ struct gatts_profile_inst
     esp_bt_uuid_t descr_uuid;
 };
 
-void ble_init(void);
\ No newline at end of file
+void ble_init(uint16_t *conn_id_ble);
\ No newline at end of file
diff --git a/main/gatts_table_creat_demo.c b/main/gatts_table_creat_demo.c
index 1849beb..2454026 100644
--- a/main/gatts_table_creat_demo.c
+++ b/main/gatts_table_creat_demo.c
@@ -17,6 +17,12 @@
 ****************************************************************************/
 #include "ble_gatts_table.h"
 
+uint16_t table_conn_id_m;
+
 void app_main(void){
-    ble_init();
+    ble_init(&table_conn_id_m);
+
+    while(true){
+        ESP_LOGI("test","%d",table_conn_id_m);
+    }
 }