1 files changed, 106 insertions, 0 deletions
diff --git a/tmk_core/protocol/usb_hid/USB_Host_Shield_2.0/max_LCD.h b/tmk_core/protocol/usb_hid/USB_Host_Shield_2.0/max_LCD.h
new file mode 100644
index 0000000000..950c9c5aa3
--- /dev/null
+++ b/tmk_core/protocol/usb_hid/USB_Host_Shield_2.0/max_LCD.h
@@ -0,0 +1,106 @@
+/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
+
+This software may be distributed and modified under the terms of the GNU
+General Public License version 2 (GPL2) as published by the Free Software
+Foundation and appearing in the file GPL2.TXT included in the packaging of
+this file. Please note that GPL2 Section 2[b] requires that all works based
+on this software must also be made publicly available under the terms of
+the GPL2 ("Copyleft").
+
+Contact information
+-------------------
+
+Circuits At Home, LTD
+Web      :  http://www.circuitsathome.com
+e-mail   :  support@circuitsathome.com
+ */
+//HD44780 compatible LCD display via MAX3421E GPOUT support header
+//pinout: D[4-7] -> GPOUT[4-7], RS-> GPOUT[2], E ->GPOUT[3]
+//
+
+#ifndef _Max_LCD_h_
+#define _Max_LCD_h_
+
+#include "Usb.h"
+#include "Print.h"
+
+// commands
+#define LCD_CLEARDISPLAY        0x01
+#define LCD_RETURNHOME          0x02
+#define LCD_ENTRYMODESET        0x04
+#define LCD_DISPLAYCONTROL      0x08
+#define LCD_CURSORSHIFT         0x10
+#define LCD_FUNCTIONSET         0x20
+#define LCD_SETCGRAMADDR        0x40
+#define LCD_SETDDRAMADDR        0x80
+
+// flags for display entry mode
+#define LCD_ENTRYRIGHT          0x00
+#define LCD_ENTRYLEFT           0x02
+#define LCD_ENTRYSHIFTINCREMENT 0x01
+#define LCD_ENTRYSHIFTDECREMENT 0x00
+
+// flags for display on/off control
+#define LCD_DISPLAYON           0x04
+#define LCD_DISPLAYOFF          0x00
+#define LCD_CURSORON            0x02
+#define LCD_CURSOROFF           0x00
+#define LCD_BLINKON             0x01
+#define LCD_BLINKOFF            0x00
+
+// flags for display/cursor shift
+#define LCD_DISPLAYMOVE         0x08
+#define LCD_CURSORMOVE          0x00
+#define LCD_MOVERIGHT           0x04
+#define LCD_MOVELEFT            0x00
+
+// flags for function set
+#define LCD_8BITMODE            0x10
+#define LCD_4BITMODE            0x00
+#define LCD_2LINE               0x08
+#define LCD_1LINE               0x00
+#define LCD_5x10DOTS            0x04
+#define LCD_5x8DOTS             0x00
+
+class Max_LCD : public Print {
+        USB *pUsb;
+
+public:
+        Max_LCD(USB *pusb);
+        void init();
+        void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS);
+        void clear();
+        void home();
+        void noDisplay();
+        void display();
+        void noBlink();
+        void blink();
+        void noCursor();
+        void cursor();
+        void scrollDisplayLeft();
+        void scrollDisplayRight();
+        void leftToRight();
+        void rightToLeft();
+        void autoscroll();
+        void noAutoscroll();
+        void createChar(uint8_t, uint8_t[]);
+        void setCursor(uint8_t, uint8_t);
+        void command(uint8_t);
+
+#if defined(ARDUINO) && ARDUINO >=100
+        size_t write(uint8_t);
+        using Print::write;
+#else
+        void write(uint8_t);
+#endif
+
+private:
+        void sendbyte(uint8_t val);
+        uint8_t _displayfunction; //tokill
+        uint8_t _displaycontrol;
+        uint8_t _displaymode;
+        uint8_t _initialized;
+        uint8_t _numlines, _currline;
+};
+
+#endif