added support for the reprapworld keypad

Marlin/Configuration.h

@@ -338,6 +338,11 @@ const bool Z_ENDSTOPS_INVERTING = true; // set to true to invert the logic of th
 // ==> REMEMBER TO INSTALL U8glib to your ARDUINO library folder: http://code.google.com/p/u8glib/wiki/u8glib
 //#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
 
+// The RepRapWorld Keypad v1.1
+// http://reprapworld.com/?products_details&products_id=202&cPath=1591_1626
+//#define KEYPAD
+//#define KEYPAD_MOVE_STEP 10.0 // how much should be moved when a key is pressed, eg 10.0 means 10mm per click
+
 //automatic expansion
 #if defined (REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER)
  #define DOGLCD
@@ -350,6 +355,11 @@ const bool Z_ENDSTOPS_INVERTING = true; // set to true to invert the logic of th
  #define NEWPANEL
 #endif 
 
+#if defined(KEYPAD)
+  #define NEWPANEL
+  #define ULTIPANEL
+#endif
+
 // Preheat Constants
 #define PLA_PREHEAT_HOTEND_TEMP 180 
 #define PLA_PREHEAT_HPB_TEMP 70

Marlin/pins.h

@@ -416,9 +416,27 @@
       #define BEEPER 33	 // Beeper on AUX-4
 
       //buttons are directly attached using AUX-2
-      #define BTN_EN1 37
-      #define BTN_EN2 35
-      #define BTN_ENC 31  //the click
+      #ifdef KEYPAD
+        #define BTN_EN1 64 // encoder
+        #define BTN_EN2 59 // encoder
+        #define BTN_ENC 63 // enter button
+        #define SHIFT_OUT 40 // shift register
+        #define SHIFT_CLK 44 // shift register
+        #define SHIFT_LD 42 // shift register
+        // define register bit values, don't change it
+        #define BLEN_KEYPAD_F3 0
+        #define BLEN_KEYPAD_F2 1
+        #define BLEN_KEYPAD_F1 2
+        #define BLEN_KEYPAD_UP 3
+        #define BLEN_KEYPAD_RIGHT 4
+        #define BLEN_KEYPAD_MIDDLE 5
+        #define BLEN_KEYPAD_DOWN 6
+        #define BLEN_KEYPAD_LEFT 7
+	  #else
+        #define BTN_EN1 37
+        #define BTN_EN2 35
+        #define BTN_ENC 31  //the click
+      #endif
 
       #ifdef G3D_PANEL
         #define SDCARDDETECT 49

Marlin/ultralcd.cpp

@@ -113,6 +113,7 @@ static void menu_action_setting_edit_callback_long5(const char* pstr, unsigned l
 
 /** Used variables to keep track of the menu */
 volatile uint8_t buttons;//Contains the bits of the currently pressed buttons.
+volatile uint8_t buttons_keypad; // to store the keypad shiftregister values
 
 uint8_t currentMenuViewOffset;              /* scroll offset in the current menu */
 uint32_t blocking_enc;
@@ -687,6 +688,25 @@ menu_edit_type(float, float51, ftostr51, 10)
 menu_edit_type(float, float52, ftostr52, 100)
 menu_edit_type(unsigned long, long5, ftostr5, 0.01)
 
+#ifdef KEYPAD
+	static void keypad_move_y_down() {
+	SERIAL_ECHO("keypad_move_y_down");
+        encoderPosition = 1;
+        move_menu_scale = KEYPAD_MOVE_STEP;
+		lcd_move_y();
+	}
+	static void keypad_move_y_up() {
+		encoderPosition = -1;
+		move_menu_scale = KEYPAD_MOVE_STEP;
+    	lcd_move_y();
+	}
+	static void keypad_move_home() {
+		//enquecommand_P((PSTR("G28"))); // move all axis home
+		// TODO gregor: move all axis home, i have currently only one axis on my prusa i3
+		enquecommand_P((PSTR("G28 Y")));
+	}
+#endif
+
 /** End of menus **/
 
 static void lcd_quick_feedback()
@@ -750,6 +770,13 @@ void lcd_init()
     WRITE(BTN_EN1,HIGH);
     WRITE(BTN_EN2,HIGH);
     WRITE(BTN_ENC,HIGH);
+    #ifdef KEYPAD
+      pinMode(SHIFT_CLK,OUTPUT);
+      pinMode(SHIFT_LD,OUTPUT);
+      pinMode(SHIFT_OUT,INPUT);
+      WRITE(SHIFT_OUT,HIGH);
+      WRITE(SHIFT_LD,HIGH);
+    #endif
 #else
     pinMode(SHIFT_CLK,OUTPUT);
     pinMode(SHIFT_LD,OUTPUT);
@@ -796,6 +823,17 @@ void lcd_update()
     if (lcd_next_update_millis < millis())
     {
 #ifdef ULTIPANEL
+		#ifdef KEYPAD
+        	if (KEYPAD_MOVE_Y_DOWN) {
+        		keypad_move_y_down();
+        	}
+        	if (KEYPAD_MOVE_Y_UP) {
+        		keypad_move_y_up();
+        	}
+        	if (KEYPAD_MOVE_HOME) {
+        		keypad_move_home();
+        	}
+		#endif
         if (encoderDiff)
         {
             lcdDrawUpdate = 1;
@@ -876,6 +914,18 @@ void lcd_buttons_update()
     if((blocking_enc<millis()) && (READ(BTN_ENC)==0))
         newbutton |= EN_C;
     buttons = newbutton;
+    // for the keypad
+    uint8_t newbutton_keypad=0;
+    WRITE(SHIFT_LD,LOW);
+    WRITE(SHIFT_LD,HIGH);
+    for(int8_t i=0;i<8;i++) {
+        newbutton_keypad = newbutton_keypad>>1;
+        if(READ(SHIFT_OUT))
+            newbutton_keypad|=(1<<7);
+        WRITE(SHIFT_CLK,HIGH);
+        WRITE(SHIFT_CLK,LOW);
+    }
+    buttons_keypad=~newbutton_keypad; //invert it, because a pressed switch produces a logical 0
 #else   //read it from the shift register
     uint8_t newbutton=0;
     WRITE(SHIFT_LD,LOW);

Marlin/ultralcd.h

@@ -23,6 +23,9 @@
   #ifdef ULTIPANEL
   void lcd_buttons_update();
   extern volatile uint8_t buttons;  //the last checked buttons in a bit array.
+  #ifdef KEYPAD
+    extern volatile uint8_t buttons_keypad; // to store the keypad shiftregister values
+  #endif
   #else
   FORCE_INLINE void lcd_buttons_update() {}
   #endif
@@ -41,6 +44,21 @@
     #define EN_A (1<<BLEN_A)
 
     #define LCD_CLICKED (buttons&EN_C)
+    #ifdef KEYPAD
+  	  #define EN_KEYPAD_F3 (1<<BLEN_KEYPAD_F3)
+  	  #define EN_KEYPAD_F2 (1<<BLEN_KEYPAD_F2)
+  	  #define EN_KEYPAD_F1 (1<<BLEN_KEYPAD_F1)
+  	  #define EN_KEYPAD_UP (1<<BLEN_KEYPAD_UP)
+  	  #define EN_KEYPAD_RIGHT (1<<BLEN_KEYPAD_RIGHT)
+  	  #define EN_KEYPAD_MIDDLE (1<<BLEN_KEYPAD_MIDDLE)
+  	  #define EN_KEYPAD_DOWN (1<<BLEN_KEYPAD_DOWN)
+  	  #define EN_KEYPAD_LEFT (1<<BLEN_KEYPAD_LEFT)
+
+  	  #define LCD_CLICKED ((buttons&EN_C) || (buttons_keypad&EN_KEYPAD_F1))
+  	  #define KEYPAD_MOVE_Y_DOWN (buttons_keypad&EN_KEYPAD_DOWN)
+  	  #define KEYPAD_MOVE_Y_UP (buttons_keypad&EN_KEYPAD_UP)
+  	  #define KEYPAD_MOVE_HOME (buttons_keypad&EN_KEYPAD_MIDDLE)
+    #endif //KEYPAD
   #else
     //atomatic, do not change
     #define B_LE (1<<BL_LE)