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authorDean Camera <dean@fourwalledcubicle.com>2012-04-14 21:35:25 +0000
committerDean Camera <dean@fourwalledcubicle.com>2012-04-14 21:35:25 +0000
commit2e757d8c38a6852427f25f302884c34dd509431a (patch)
tree4a1466dd6cb5a985f1cff4969b3ac80ab065fc9a /Projects/SerialToLCD/Lib/HD44780.h
parent47f6a35013b2c6a370e5dce29aa6da3a96844695 (diff)
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Added new SerialToLCD user project contributed by Simon Foster.
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-rw-r--r--Projects/SerialToLCD/Lib/HD44780.h64
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diff --git a/Projects/SerialToLCD/Lib/HD44780.h b/Projects/SerialToLCD/Lib/HD44780.h
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+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2012.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2012 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 disclaim 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 (0x10) // PD4
+ #define ENABLE (0x80) // PD7
+
+ #define HI4_MASK (0xF0)
+ #define LO4_MASK (0x0F) // PD0..3
+
+ #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_Initialise(void);
+ void HD44780_WriteData(const uint8_t c);
+ void HD44780_WriteCommand(const uint8_t c);
+
+#endif