HD44780.h
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/*
LUFA Library
Copyright (C) Dean Camera, 2019.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2019 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