Merge pull request #1693 from chris-bo/rework_lcd_beeper

use only one implementation for beeper feedback

Marlin/Configuration.h

 //#define ULTIPANEL  //the UltiPanel as on Thingiverse
 //#define LCD_FEEDBACK_FREQUENCY_HZ 1000	// this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
 //#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click
+                                               // 0 to disable buzzer feedback  
 
 // PanelOne from T3P3 (via RAMPS 1.4 AUX2/AUX3)
 // http://reprap.org/wiki/PanelOne

Marlin/dogm_lcd_implementation.h

 #define lcd_implementation_drawmenu_gcode(sel, row, pstr, gcode) lcd_implementation_drawmenu_generic(sel, row, pstr, '>', ' ')
 #define lcd_implementation_drawmenu_function(sel, row, pstr, data) lcd_implementation_drawmenu_generic(sel, row, pstr, '>', ' ')
 
-static void lcd_implementation_quick_feedback() {
-  #if BEEPER > -1
-    SET_OUTPUT(BEEPER);
-    for(int8_t i=0; i<10; i++) {
-      WRITE(BEEPER,HIGH);
-      delay(3);
-      WRITE(BEEPER,LOW);
-      delay(3);
-    }
-  #endif
-}
-
 #endif //__DOGM_LCD_IMPLEMENTATION_H

Marlin/ultralcd.cpp

 static void lcd_quick_feedback() {
   lcdDrawUpdate = 2;
   blocking_enc = millis() + 500;
-  lcd_implementation_quick_feedback();
+    
+  #ifdef LCD_USE_I2C_BUZZER
+    #ifndef LCD_FEEDBACK_FREQUENCY_HZ
+      #define LCD_FEEDBACK_FREQUENCY_HZ 100
+    #endif
+    #ifndef LCD_FEEDBACK_FREQUENCY_DURATION_MS
+      #define LCD_FEEDBACK_FREQUENCY_DURATION_MS (1000/6)
+    #endif    
+    lcd_buzz(LCD_FEEDBACK_FREQUENCY_DURATION_MS, LCD_FEEDBACK_FREQUENCY_HZ);
+  #elif defined(BEEPER) && BEEPER > -1
+    SET_OUTPUT(BEEPER);
+    #ifndef LCD_FEEDBACK_FREQUENCY_HZ
+      #define LCD_FEEDBACK_FREQUENCY_HZ 500
+    #endif
+    #ifndef LCD_FEEDBACK_FREQUENCY_DURATION_MS
+      #define LCD_FEEDBACK_FREQUENCY_DURATION_MS 50
+    #endif
+    const unsigned int delay = 1000000 / LCD_FEEDBACK_FREQUENCY_HZ / 2;
+    int i = LCD_FEEDBACK_FREQUENCY_DURATION_MS * LCD_FEEDBACK_FREQUENCY_HZ / 1000;
+    while (i--) {
+      WRITE(BEEPER,HIGH);
+      delayMicroseconds(delay);
+      WRITE(BEEPER,LOW);
+      delayMicroseconds(delay);
+     }
+  #endif
 }
 
 /** Menu action functions **/

Marlin/ultralcd_implementation_hitachi_HD44780.h

 #define lcd_implementation_drawmenu_gcode(sel, row, pstr, gcode) lcd_implementation_drawmenu_generic(sel, row, pstr, '>', ' ')
 #define lcd_implementation_drawmenu_function(sel, row, pstr, data) lcd_implementation_drawmenu_generic(sel, row, pstr, '>', ' ')
 
-static void lcd_implementation_quick_feedback()
-{
-  #ifdef LCD_USE_I2C_BUZZER
-    #if defined(LCD_FEEDBACK_FREQUENCY_DURATION_MS) && defined(LCD_FEEDBACK_FREQUENCY_HZ)
-      lcd_buzz(LCD_FEEDBACK_FREQUENCY_DURATION_MS, LCD_FEEDBACK_FREQUENCY_HZ);
-    #else
-      lcd_buzz(1000/6, 100);
-    #endif
-  #elif defined(BEEPER) && BEEPER > -1
-    SET_OUTPUT(BEEPER);
-    #if !defined(LCD_FEEDBACK_FREQUENCY_HZ) || !defined(LCD_FEEDBACK_FREQUENCY_DURATION_MS)
-      const unsigned int delay = 100;
-      uint8_t i = 10;
-    #else
-      const unsigned int delay = 1000000 / LCD_FEEDBACK_FREQUENCY_HZ / 2;
-      int8_t i = LCD_FEEDBACK_FREQUENCY_DURATION_MS * LCD_FEEDBACK_FREQUENCY_HZ / 1000;
-    #endif
-    while (i--) {
-      WRITE(BEEPER,HIGH);
-      delayMicroseconds(delay);
-      WRITE(BEEPER,LOW);
-      delayMicroseconds(delay);
-    }
-  #endif
-}
-
 #ifdef LCD_HAS_STATUS_INDICATORS
 static void lcd_implementation_update_indicators()
 {