Merge commit '60b30c0363' as 'lib/lufa'

lib/lufa/Projects/SerialToLCD/Lib/HD44780.h

@@ -0,0 +1,64 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2012  Simon Foster (simon.foster [at] inbox [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *
+ *  Header file for HD44780.c.
+ */
+
+#ifndef _HD44780_H_
+#define _HD44780_H_
+
+	/* Includes: */
+		#include <avr/io.h>
+		#include <util/delay.h>
+		#include <avr/power.h>
+
+	/* Macros: */
+		#define RS                  (1 << 4)    /* PD4 */
+		#define ENABLE              (1 << 7)    /* PD7 */
+
+		#define HI4_MASK            0xF0
+		#define LO4_MASK            0x0F        /* PD0-PD3 */
+
+		#define ALL_BITS            (RS | ENABLE | LO4_MASK)
+
+		#define HI4(c)              ((c & HI4_MASK) >> 4)
+		#define LO4(c)              ((c & LO4_MASK) >> 0)
+
+		#define CMD_DISPLAY_ON      0x0C
+
+	/* Function Prototypes: */
+		void HD44780_Initialize(void);
+		void HD44780_WriteData(const uint8_t c);
+		void HD44780_WriteCommand(const uint8_t c);
+
+#endif