From d12f9a18f1b58a4a4dba8a835fbfde2ec95c3fa3 Mon Sep 17 00:00:00 2001
From: yswallow <1426202+yswallow@users.noreply.github.com>
Date: Fri, 18 Mar 2022 02:57:35 +0900
Subject: [PATCH] avoid "Already advertising" error

---
 kmk/hid.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/kmk/hid.py b/kmk/hid.py
index 7bfec2a..5f099a4 100644
--- a/kmk/hid.py
+++ b/kmk/hid.py
@@ -314,10 +314,11 @@ class BLEHID(AbstractHID):
         _bleio.adapter.erase_bonding()
 
     def start_advertising(self):
-        advertisement = ProvideServicesAdvertisement(self.hid)
-        advertisement.appearance = self.BLE_APPEARANCE_HID_KEYBOARD
+        if not self.ble.advertising:
+            advertisement = ProvideServicesAdvertisement(self.hid)
+            advertisement.appearance = self.BLE_APPEARANCE_HID_KEYBOARD
 
-        self.ble.start_advertising(advertisement)
+            self.ble.start_advertising(advertisement)
 
     def stop_advertising(self):
         self.ble.stop_advertising()