From 46f5bea19f1cc2f6f96a0bb3d24b6ff13a0eb32a Mon Sep 17 00:00:00 2001
From: daid <daid303@gmail.com>
Date: Thu, 13 Feb 2014 11:17:33 +0100
Subject: [PATCH] Add configurable beep for UltiPanel.

---
 Marlin/ultralcd_implementation_hitachi_HD44780.h | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/Marlin/ultralcd_implementation_hitachi_HD44780.h b/Marlin/ultralcd_implementation_hitachi_HD44780.h
index afc9c5c47..ccb820b49 100644
--- a/Marlin/ultralcd_implementation_hitachi_HD44780.h
+++ b/Marlin/ultralcd_implementation_hitachi_HD44780.h
@@ -718,13 +718,23 @@ static void lcd_implementation_quick_feedback()
 	#endif
 #elif defined(BEEPER) && BEEPER > -1
     SET_OUTPUT(BEEPER);
+	#if !defined(LCD_FEEDBACK_FREQUENCY_HZ) || !defined(LCD_FEEDBACK_FREQUENCY_DURATION_MS)
     for(int8_t i=0;i<10;i++)
     {
       WRITE(BEEPER,HIGH);
       delayMicroseconds(100);
       WRITE(BEEPER,LOW);
       delayMicroseconds(100);
-    }
+    }
+    #else
+    for(int8_t i=0;i<(LCD_FEEDBACK_FREQUENCY_DURATION_MS / (1000 / LCD_FEEDBACK_FREQUENCY_HZ));i++)
+    {
+      WRITE(BEEPER,HIGH);
+      delayMicroseconds(1000000 / LCD_FEEDBACK_FREQUENCY_HZ / 2);
+      WRITE(BEEPER,LOW);
+      delayMicroseconds(1000000 / LCD_FEEDBACK_FREQUENCY_HZ / 2);
+    }
+    #endif
 #endif
 }