65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2019.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2019 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Copyright 2012 Simon Foster (simon.foster [at] inbox [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Header file for HD44780.c.
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*/
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#ifndef _HD44780_H_
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#define _HD44780_H_
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/* Includes: */
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#include <avr/io.h>
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#include <util/delay.h>
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#include <avr/power.h>
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/* Macros: */
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#define RS (1 << 4) /* PD4 */
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#define ENABLE (1 << 7) /* PD7 */
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#define HI4_MASK 0xF0
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#define LO4_MASK 0x0F /* PD0-PD3 */
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#define ALL_BITS (RS | ENABLE | LO4_MASK)
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#define HI4(c) ((c & HI4_MASK) >> 4)
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#define LO4(c) ((c & LO4_MASK) >> 0)
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#define CMD_DISPLAY_ON 0x0C
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/* Function Prototypes: */
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void HD44780_Initialize(void);
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void HD44780_WriteData(const uint8_t c);
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void HD44780_WriteCommand(const uint8_t c);
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#endif
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