feat(nimble): support vendor event mask set and vendor HCI event on nimble host

examples/bluetooth/nimble/power_save/main/Kconfig.projbuild

@@ -177,4 +177,14 @@ menu "Example Configuration"
         help
             Used for internal test ONLY.
             Use this option to advertise in a specific random address.
+
+    config EXAMPLE_SLEEP_WAKEUP
+        bool "Enable Vendor-Specific Sleep Wake-Up Event"
+        depends on BT_NIMBLE_VS_SUPPORT
+        default n
+        help
+            When enabled, the Nimble Host allows setting a Vendor-Specific
+            Event Mask for processing sleep wake-up events from the controller.
+            The controller sends a wake-up event (HCI_LE_SLEEP_WAKE_UP 0xFF 0xC3)
+            when it resumes from sleep.
 endmenu

examples/bluetooth/nimble/power_save/main/main.c

@@ -58,6 +58,10 @@ static uint8_t own_addr_type;
 
 void ble_store_config_init(void);
 
+#if MYNEWT_VAL(BLE_HCI_VS)
+static struct ble_gap_event_listener vs_event_listener;
+#endif
+
 #if MYNEWT_VAL(BLE_POWER_CONTROL)
 static struct ble_gap_event_listener power_control_event_listener;
 #endif
@@ -146,6 +150,13 @@ ext_bleprph_advertise(void)
     /* start advertising */
     rc = ble_gap_ext_adv_start(instance, 0, 0);
     assert (rc == 0);
+
+#if CONFIG_EXAMPLE_SLEEP_WAKEUP
+    rc = ble_hs_send_vs_event_mask(ESP_BLE_VENDOR_SLEEP_WAKEUP_EVT_MASK);
+
+    rc = ble_gap_event_listener_register(&vs_event_listener,
+		    bleprph_gap_event,NULL);
+#endif
 }
 #else
 /**
@@ -445,6 +456,20 @@ bleprph_gap_event(struct ble_gap_event *event, void *arg)
         }
         return 0;
 
+#if CONFIG_EXAMPLE_SLEEP_WAKEUP
+    case BLE_GAP_EVENT_VS_HCI:
+	const struct ble_hci_ev_vs *ev = event->vs_hci.ev;
+
+	switch(ev->id) {
+            case BLE_HCI_VS_SUBEV_LE_SLEEP_WAKE_UP:
+	        MODLOG_DFLT(INFO, "Got Sleep wake up ");
+		break;
+
+	    default:
+		break;
+	}
+#endif
+
     }
 
     return 0;