diff --git a/main/ble_spp_server_demo.c b/main/ble_spp_server_demo.c
index cbe5bd1..0bda2a2 100644
--- a/main/ble_spp_server_demo.c
+++ b/main/ble_spp_server_demo.c
@@ -214,25 +214,25 @@ static const esp_gatts_attr_db_t spp_gatt_db[SPP_IDX_NB] = {
                                    {ESP_UUID_LEN_128, (uint8_t *)&spp_char_uuid128_tx, ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE, SPP_DATA_MAX_LEN, sizeof(spp_data_receive_val),
                                     (uint8_t *)spp_data_receive_val}},
 
-    // // SPP -  command characteristic Declaration
-    // [SPP_IDX_SPP_COMMAND_CHAR] = {{ESP_GATT_AUTO_RSP},
-    //                               {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE, CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read_write}},
+// // SPP -  command characteristic Declaration
+// [SPP_IDX_SPP_COMMAND_CHAR] = {{ESP_GATT_AUTO_RSP},
+//                               {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE, CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read_write}},
 
-    // // SPP -  command characteristic Value
-    // [SPP_IDX_SPP_COMMAND_VAL] = {{ESP_GATT_AUTO_RSP},
-    //                              {ESP_UUID_LEN_16, (uint8_t *)&spp_command_uuid, ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE, SPP_CMD_MAX_LEN, sizeof(spp_command_val), (uint8_t *)spp_command_val}},
+// // SPP -  command characteristic Value
+// [SPP_IDX_SPP_COMMAND_VAL] = {{ESP_GATT_AUTO_RSP},
+//                              {ESP_UUID_LEN_16, (uint8_t *)&spp_command_uuid, ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE, SPP_CMD_MAX_LEN, sizeof(spp_command_val), (uint8_t *)spp_command_val}},
 
-    // // SPP -  status characteristic Declaration
-    // [SPP_IDX_SPP_STATUS_CHAR] = {{ESP_GATT_AUTO_RSP},
-    //                              {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE, CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read_notify}},
+// // SPP -  status characteristic Declaration
+// [SPP_IDX_SPP_STATUS_CHAR] = {{ESP_GATT_AUTO_RSP},
+//                              {ESP_UUID_LEN_16, (uint8_t *)&character_declaration_uuid, ESP_GATT_PERM_READ, CHAR_DECLARATION_SIZE, CHAR_DECLARATION_SIZE, (uint8_t *)&char_prop_read_notify}},
 
-    // // SPP -  status characteristic Value
-    // [SPP_IDX_SPP_STATUS_VAL] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&spp_status_uuid, ESP_GATT_PERM_READ, SPP_STATUS_MAX_LEN, sizeof(spp_status_val), (uint8_t *)spp_status_val}},
+// // SPP -  status characteristic Value
+// [SPP_IDX_SPP_STATUS_VAL] = {{ESP_GATT_AUTO_RSP}, {ESP_UUID_LEN_16, (uint8_t *)&spp_status_uuid, ESP_GATT_PERM_READ, SPP_STATUS_MAX_LEN, sizeof(spp_status_val), (uint8_t *)spp_status_val}},
 
-    // // SPP -  status characteristic - Client Characteristic Configuration Descriptor
-    // [SPP_IDX_SPP_STATUS_CFG] = {{ESP_GATT_AUTO_RSP},
-    //                             {ESP_UUID_LEN_16, (uint8_t *)&character_client_config_uuid, ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE, sizeof(uint16_t), sizeof(spp_status_ccc),
-    //                              (uint8_t *)spp_status_ccc}},
+// // SPP -  status characteristic - Client Characteristic Configuration Descriptor
+// [SPP_IDX_SPP_STATUS_CFG] = {{ESP_GATT_AUTO_RSP},
+//                             {ESP_UUID_LEN_16, (uint8_t *)&character_client_config_uuid, ESP_GATT_PERM_READ | ESP_GATT_PERM_WRITE, sizeof(uint16_t), sizeof(spp_status_ccc),
+//                              (uint8_t *)spp_status_ccc}},
 
 #ifdef SUPPORT_HEARTBEAT
     // SPP -  Heart beat characteristic Declaration
@@ -498,26 +498,27 @@ static void gatts_profile_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_
       esp_ble_gatts_create_attr_tab(spp_gatt_db, gatts_if, SPP_IDX_NB, SPP_SVC_INST_ID);
       break;
     case ESP_GATTS_READ_EVT:
-      res = find_char_and_desr_index(p_data->read.handle);
-      if (res == SPP_IDX_SPP_STATUS_VAL) {
-        // TODO:client read the status characteristic
-      }
+      // res = find_char_and_desr_index(p_data->read.handle);
+      // if (res == SPP_IDX_SPP_STATUS_VAL) {
+      //   // TODO:client read the status characteristic
+      // }
       break;
     case ESP_GATTS_WRITE_EVT: {
       res = find_char_and_desr_index(p_data->write.handle);
       if (p_data->write.is_prep == false) {
         ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_WRITE_EVT : handle = %d\n", res);
-        if (res == SPP_IDX_SPP_COMMAND_VAL) {
-          uint8_t *spp_cmd_buff = NULL;
-          spp_cmd_buff = (uint8_t *)malloc((spp_mtu_size - 3) * sizeof(uint8_t));
-          if (spp_cmd_buff == NULL) {
-            ESP_LOGE(GATTS_TABLE_TAG, "%s malloc failed\n", __func__);
-            break;
-          }
-          memset(spp_cmd_buff, 0x0, (spp_mtu_size - 3));
-          memcpy(spp_cmd_buff, p_data->write.value, p_data->write.len);
-          xQueueSend(cmd_cmd_queue, &spp_cmd_buff, 10 / portTICK_PERIOD_MS);
-        } else if (res == SPP_IDX_SPP_DATA_NTF_CFG) {
+        // if (res == SPP_IDX_SPP_COMMAND_VAL) {
+        //   uint8_t *spp_cmd_buff = NULL;
+        //   spp_cmd_buff = (uint8_t *)malloc((spp_mtu_size - 3) * sizeof(uint8_t));
+        //   if (spp_cmd_buff == NULL) {
+        //     ESP_LOGE(GATTS_TABLE_TAG, "%s malloc failed\n", __func__);
+        //     break;
+        //   }
+        //   memset(spp_cmd_buff, 0x0, (spp_mtu_size - 3));
+        //   memcpy(spp_cmd_buff, p_data->write.value, p_data->write.len);
+        //   xQueueSend(cmd_cmd_queue, &spp_cmd_buff, 10 / portTICK_PERIOD_MS);
+        // } else if (res == SPP_IDX_SPP_DATA_NTF_CFG) {
+        if (res == SPP_IDX_SPP_DATA_NTF_CFG) {
           if ((p_data->write.len == 2) && (p_data->write.value[0] == 0x01) && (p_data->write.value[1] == 0x00)) {
             enable_data_ntf = true;
           } else if ((p_data->write.len == 2) && (p_data->write.value[0] == 0x00) && (p_data->write.value[1] == 0x00)) {