check event error codes for adv stop

Author: paul-szczepanek-arm

BLE_GAP/source/main.cpp

@@ -330,8 +330,23 @@ class GapDemo : private mbed::NonCopyable<GapDemo>, public ble::Gap::EventHandle
 
     void onAdvertisingEnd(const ble::AdvertisingEndEvent &event) override
     {
-        if (event.isConnected()) {
-            printf("Stopped advertising early due to connection\r\n");
+        ble::advertising_handle_t adv_handle = event.getAdvHandle();
+        if (event.getStatus() == BLE_ERROR_UNSPECIFIED) {
+            printf("Error: Failed to stop advertising set %d\r\n", adv_handle);
+        } else {
+            printf("Stopped advertising set %d\r\n", adv_handle);
+
+            if (event.getStatus() == BLE_ERROR_TIMEOUT) {
+                printf("Stopped due to timeout\r\n");
+            } else if (event.getStatus() == BLE_ERROR_LIMIT_REACHED) {
+                printf("Stopped due to max number of adv events reached\r\n");
+            } else if (event.getStatus() == BLE_ERROR_NONE) {
+                if (event.isConnected()) {
+                    printf("Stopped early due to connection\r\n");
+                } else {
+                    printf("Stopped due to user request\r\n");
+                }
+            }
         }
 
 #if BLE_FEATURE_EXTENDED_ADVERTISING
@@ -504,6 +519,8 @@ class GapDemo : private mbed::NonCopyable<GapDemo>, public ble::Gap::EventHandle
     {
         print_advertising_performance();
 
+        printf("Requesting stop advertising.\r\n");
+
         _gap.stopAdvertising(ble::LEGACY_ADVERTISING_HANDLE);
 
 #if BLE_FEATURE_EXTENDED_ADVERTISING