From 6e0b5c204af51f619196593309dc88635450fac3 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Tue, 10 Apr 2018 21:09:08 +1000
Subject: [PATCH] AP_Notify: support buzzer backend on ChibiOS

---
 libraries/AP_Notify/AP_Notify.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libraries/AP_Notify/AP_Notify.cpp b/libraries/AP_Notify/AP_Notify.cpp
index acce24011c..52032d951a 100644
--- a/libraries/AP_Notify/AP_Notify.cpp
+++ b/libraries/AP_Notify/AP_Notify.cpp
@@ -239,6 +239,9 @@ void AP_Notify::add_backends(void)
 # else
     ADD_BACKEND(new AP_BoardLED());
 # endif
+#ifdef BUZZER_PIN
+    ADD_BACKEND(new Buzzer());
+#endif
     ADD_BACKEND(new ToshibaLED_I2C(TOSHIBA_LED_I2C_BUS_EXTERNAL));
     ADD_BACKEND(new ToshibaLED_I2C(TOSHIBA_LED_I2C_BUS_INTERNAL));
     ADD_BACKEND(new Display());