Nordic BLE: Fix processing of events.

If new events are signaled during processing then they should be processed when processEvent is called again. The goal is to let other processing happen and not process sollely ble events.

Author: pan-

features/FEATURE_BLE/targets/TARGET_NORDIC/TARGET_NRF5x/source/nRF5xn.cpp

@@ -223,19 +223,18 @@ nRF5xn::waitForEvent(void)
 
 void nRF5xn::processEvents() {
     core_util_critical_section_enter();
-    while (isEventsSignaled) {
+    if (isEventsSignaled) {
         isEventsSignaled = false;
         core_util_critical_section_exit();
-        #if NRF_SD_BLE_API_VERSION >= 5
+#if NRF_SD_BLE_API_VERSION >= 5
         // We use the "polling" dispatch model
         // http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v14.2.0/group__nrf__sdh.html?cp=4_0_0_6_11_60_20#gab4d7be69304d4f5feefd1d440cc3e6c7
         // This will process any pending events from the Softdevice
         nrf_sdh_evts_poll();
-        #else
+#else
         intern_softdevice_events_execute();
-        #endif
-
-        core_util_critical_section_enter();
+#endif
+    } else {
+        core_util_critical_section_exit();
     }
-    core_util_critical_section_exit();
 }