Merge pull request #781 from Cylindric3D/typofixes_upstream

Various typo fixes #3 - only in comments, no code changes.

Marlin/ultralcd.cpp

 #include "ultralcd_implementation_hitachi_HD44780.h"
 #endif
 
-/** forward declerations **/
+/** forward declarations **/
 
 void copy_and_scalePID_i();
 void copy_and_scalePID_d();
 static void lcd_control_retract_menu();
 static void lcd_sdcard_menu();
 
-static void lcd_quick_feedback();//Cause an LCD refresh, and give the user visual or audiable feedback that something has happend
+static void lcd_quick_feedback();//Cause an LCD refresh, and give the user visual or audible feedback that something has happened
 
-/* Different types of actions that can be used in menuitems. */
+/* Different types of actions that can be used in menu items. */
 static void menu_action_back(menuFunc_t data);
 static void menu_action_submenu(menuFunc_t data);
 static void menu_action_gcode(const char* pgcode);
 #ifndef REPRAPWORLD_KEYPAD
 volatile uint8_t buttons;//Contains the bits of the currently pressed buttons.
 #else
-volatile uint8_t buttons_reprapworld_keypad; // to store the reprapworld_keypad shiftregister values
+volatile uint8_t buttons_reprapworld_keypad; // to store the reprapworld_keypad shift register values
 #endif
 #ifdef LCD_HAS_SLOW_BUTTONS
 volatile uint8_t slow_buttons;//Contains the bits of the currently pressed buttons.
 menuFunc_t currentMenu = lcd_status_screen; /* function pointer to the currently active menu */
 uint32_t lcd_next_update_millis;
 uint8_t lcd_status_update_delay;
-uint8_t lcdDrawUpdate = 2;                  /* Set to none-zero when the LCD needs to draw, decreased after every draw. Set to 2 in LCD routines so the LCD gets atleast 1 full redraw (first redraw is partial) */
+uint8_t lcdDrawUpdate = 2;                  /* Set to none-zero when the LCD needs to draw, decreased after every draw. Set to 2 in LCD routines so the LCD gets at least 1 full redraw (first redraw is partial) */
 
 //prevMenu and prevEncoderPosition are used to store the previous menu location when editing settings.
 menuFunc_t prevMenu = NULL;
 int32_t minEditValue, maxEditValue;
 menuFunc_t callbackFunc;
 
-// placeholders for Ki and Kd edits
+// place-holders for Ki and Kd edits
 float raw_Ki, raw_Kd;
 
-/* Main status screen. It's up to the implementation specific part to show what is needed. As this is very display dependend */
+/* Main status screen. It's up to the implementation specific part to show what is needed. As this is very display dependent */
 static void lcd_status_screen()
 {
     if (lcd_status_update_delay)
 static void lcd_control_motion_menu()
 {
     START_MENU();
-    MENU_ITEM(back, MSG_CONTROL, lcd_control_menu);
+    MENU_ITEM(back, MSG_CONTROL, lcd_control_menu);
 #ifdef ENABLE_AUTO_BED_LEVELING
-    MENU_ITEM_EDIT(float32, MSG_ZPROBE_ZOFFSET, &zprobe_zoffset, 0.5, 50);
+    MENU_ITEM_EDIT(float32, MSG_ZPROBE_ZOFFSET, &zprobe_zoffset, 0.5, 50);
 #endif
     MENU_ITEM_EDIT(float5, MSG_ACC, &acceleration, 500, 99000);
     MENU_ITEM_EDIT(float3, MSG_VXY_JERK, &max_xy_jerk, 1, 990);
     WRITE(SHIFT_LD,HIGH);
   #endif
 #else  // Not NEWPANEL
-  #ifdef SR_LCD_2W_NL // Non latching 2 wire shiftregister
+  #ifdef SR_LCD_2W_NL // Non latching 2 wire shift register
      pinMode (SR_DATA_PIN, OUTPUT);
      pinMode (SR_CLK_PIN, OUTPUT);
   #elif defined(SHIFT_CLK) 
     {
         lcdDrawUpdate = 2;
         lcd_oldcardstatus = IS_SD_INSERTED;
-        lcd_implementation_init(); // to maybe revive the lcd if static electricty killed it.
+        lcd_implementation_init(); // to maybe revive the LCD if static electricity killed it.
 
         if(lcd_oldcardstatus)
         {
 }
 
 // Callback for after editing PID i value
-// grab the pid i value out of the temp variable; scale it; then update the PID driver
+// grab the PID i value out of the temp variable; scale it; then update the PID driver
 void copy_and_scalePID_i()
 {
 #ifdef PIDTEMP
 }
 
 // Callback for after editing PID d value
-// grab the pid d value out of the temp variable; scale it; then update the PID driver
+// grab the PID d value out of the temp variable; scale it; then update the PID driver
 void copy_and_scalePID_d()
 {
 #ifdef PIDTEMP

Marlin/ultralcd.h

   void lcd_setcontrast(uint8_t value);
 #endif
 
-  static unsigned char blink = 0;	// Variable for visualisation of fan rotation in GLCD
+  static unsigned char blink = 0;	// Variable for visualization of fan rotation in GLCD
 
   #define LCD_MESSAGEPGM(x) lcd_setstatuspgm(PSTR(x))
   #define LCD_ALERTMESSAGEPGM(x) lcd_setalertstatuspgm(PSTR(x))
   void lcd_buttons_update();
   extern volatile uint8_t buttons;  //the last checked buttons in a bit array.
   #ifdef REPRAPWORLD_KEYPAD
-    extern volatile uint8_t buttons_reprapworld_keypad; // to store the keypad shiftregister values
+    extern volatile uint8_t buttons_reprapworld_keypad; // to store the keypad shift register values
   #endif
   #else
   FORCE_INLINE void lcd_buttons_update() {}
   	  #define REPRAPWORLD_KEYPAD_MOVE_HOME (buttons_reprapworld_keypad&EN_REPRAPWORLD_KEYPAD_MIDDLE)
     #endif //REPRAPWORLD_KEYPAD
   #else
-    //atomatic, do not change
+    //atomic, do not change
     #define B_LE (1<<BL_LE)
     #define B_UP (1<<BL_UP)
     #define B_MI (1<<BL_MI)
     #define LCD_CLICKED ((buttons&B_MI)||(buttons&B_ST))
   #endif//NEWPANEL
 
-#else //no lcd
+#else //no LCD
   FORCE_INLINE void lcd_update() {}
   FORCE_INLINE void lcd_init() {}
   FORCE_INLINE void lcd_setstatus(const char* message) {}

Marlin/ultralcd_implementation_hitachi_HD44780.h

 #define ULTRA_LCD_IMPLEMENTATION_HITACHI_HD44780_H
 
 /**
-* Implementation of the LCD display routines for a hitachi HD44780 display. These are common LCD character displays.
-* When selecting the rusian language, a slightly different LCD implementation is used to handle UTF8 characters.
+* Implementation of the LCD display routines for a Hitachi HD44780 display. These are common LCD character displays.
+* When selecting the Russian language, a slightly different LCD implementation is used to handle UTF8 characters.
 **/
 
 #ifndef REPRAPWORLD_KEYPAD
 // via a shift/i2c register.
 
 #ifdef ULTIPANEL
-// All Ultipanels might have an encoder - so this is always be mapped onto first two bits
+// All UltiPanels might have an encoder - so this is always be mapped onto first two bits
 #define BLEN_B 1
 #define BLEN_A 0
 
       delayMicroseconds(100);
       WRITE(BEEPER,LOW);
       delayMicroseconds(100);
-    }
-    #else
+    }
+    #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
 }