update configCentralConn value

Author: hathach

libraries/Bluefruit52Lib/examples/Central/central_hid/central_hid.ino

@@ -33,8 +33,6 @@ void setup()
 
   Serial.println("Bluefruit52 Central HID (Keyboard + Mouse) Example");
   Serial.println("--------------------------------------------------\n");
-
-  Bluefruit.configCentralConn(23, 3, 1, 3);
 
   // Initialize Bluefruit with maximum connections as Peripheral = 0, Central = 1
   // SRAM usage required by SoftDevice will increase dramatically with number of connections

libraries/Bluefruit52Lib/src/BLEGap.cpp

@@ -331,13 +331,17 @@ void BLEGap::_eventHandler(ble_evt_t* evt)
       // Bonding process completed
       ble_gap_evt_auth_status_t* status = &evt->evt.gap_evt.params.auth_status;
 
-      // Pairing/Bonding succeeded --> save encryption keys
+      // Pairing succeeded --> save encryption keys ( Bonding )
       if (BLE_GAP_SEC_STATUS_SUCCESS == status->auth_status)
       {
         peer->bonded = true;
         peer->ediv   = peer->bond_data->own_enc.master_id.ediv;
 
-        bond_save_keys(conn_hdl, peer->bond_data);
+        // TODO Skip bonding for central, implement re-establishment connection later.
+        if ( peer->role == BLE_GAP_ROLE_PERIPH )
+        {
+          bond_save_keys(conn_hdl, peer->bond_data);
+        }
       }else
       {
         PRINT_HEX(status->auth_status);

libraries/Bluefruit52Lib/src/bluefruit.cpp

@@ -194,15 +194,15 @@ void AdafruitBluefruit::configCentralBandwidth(uint8_t bw)
     // TODO Bandwidth auto
     case BANDWIDTH_AUTO:
     case BANDWIDTH_NORMAL:
-      configCentralConn(BLE_GATT_ATT_MTU_DEFAULT, BLE_GAP_EVENT_LENGTH_DEFAULT, BLE_GATTS_HVN_TX_QUEUE_SIZE_DEFAULT, BLE_GATTC_WRITE_CMD_TX_QUEUE_SIZE_DEFAULT);
+      configCentralConn(BLE_GATT_ATT_MTU_DEFAULT, BLE_GAP_EVENT_LENGTH_DEFAULT, BLE_GATTS_HVN_TX_QUEUE_SIZE_DEFAULT, 3);
     break;
 
     case BANDWIDTH_HIGH:
-      configCentralConn(128, 6, 2, BLE_GATTC_WRITE_CMD_TX_QUEUE_SIZE_DEFAULT);
+      configCentralConn(128, 6, 1, 3);
     break;
 
     case BANDWIDTH_MAX:
-      configCentralConn(247, 6, 3, BLE_GATTC_WRITE_CMD_TX_QUEUE_SIZE_DEFAULT);
+      configCentralConn(247, 6, 1, 3);
     break;
 
     default: break;