fix some warnings

remove beacon blocking wait for Serial connection

Author: hathach

cores/nRF5/freertos/portable/CMSIS/nrf52/port_cmsis_systick.c

@@ -194,8 +194,7 @@ void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime )
             (void) sd_softdevice_is_enabled(&sd_en);
             if (sd_en) // (softdevice_handler_is_enabled())
             {
-                uint32_t err_code = sd_app_evt_wait();
-                //APP_ERROR_CHECK(err_code);
+                (void) sd_app_evt_wait();
             }
             else
 #endif

libraries/Bluefruit52Lib/examples/Peripheral/beacon/beacon.ino

@@ -34,7 +34,9 @@ BLEBeacon beacon(beaconUuid, 0x0000, 0x0000, -54);
 void setup() 
 {
   Serial.begin(115200);
-  while ( !Serial ) delay(10);   // for nrf52840 with native usb
+
+  // Uncomment to blocking wait for Serial connection
+  // while ( !Serial ) delay(10);
 
   Serial.println("Bluefruit52 Beacon Example");
   Serial.println("--------------------------\n");

libraries/Bluefruit52Lib/src/BLEPeriph.cpp

@@ -126,7 +126,7 @@ void BLEPeriph::setDisconnectCallback( ble_disconnect_callback_t fp )
 void BLEPeriph::_eventHandler(ble_evt_t* evt)
 {
   uint16_t const conn_hdl = evt->evt.common_evt.conn_handle;
-  BLEConnection* conn = Bluefruit.Connection(conn_hdl);
+  // BLEConnection* conn = Bluefruit.Connection(conn_hdl);
 
   switch ( evt->header.evt_id  )
   {

libraries/Bluefruit52Lib/src/BLESecurity.cpp

@@ -374,6 +374,7 @@ void BLESecurity::_eventHandler(ble_evt_t* evt)
       // - load key and return if bonded previously.
       // - Else return NULL --> Initiate key exchange
       ble_gap_evt_sec_info_request_t* sec_info = (ble_gap_evt_sec_info_request_t*) &evt->evt.gap_evt.params.sec_info_request;
+      (void) sec_info;
 
       LOG_LV2("PAIR", "Address: ID = %d, Type = 0x%02X, %02X:%02X:%02X:%02X:%02X:%02X",
               sec_info->peer_addr.addr_id_peer, sec_info->peer_addr.addr_type,
@@ -395,6 +396,7 @@ void BLESecurity::_eventHandler(ble_evt_t* evt)
     case BLE_GAP_EVT_CONN_SEC_UPDATE:
     {
       const ble_gap_conn_sec_t* conn_sec = &evt->evt.gap_evt.params.conn_sec_update.conn_sec;
+      (void) conn_sec;
       LOG_LV2("PAIR", "Security Mode = %d, Level = %d", conn_sec->sec_mode.sm, conn_sec->sec_mode.lv);
 
       if ( _secured_cb )

libraries/Bluefruit52Lib/src/utility/bonding.cpp

@@ -97,7 +97,6 @@ void bond_init(void)
  *------------------------------------------------------------------*/
 static void bond_save_keys_dfr (uint8_t role, uint16_t conn_hdl, bond_keys_t const * bkeys)
 {
-  uint16_t const ediv = (role == BLE_GAP_ROLE_PERIPH) ? bkeys->own_enc.master_id.ediv : bkeys->peer_enc.master_id.ediv;
   uint8_t const * mac = bkeys->peer_id.id_addr_info.addr;
 
   // Bond store keys using peer mac address e.g 1a2b3c4d5e6f