You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
7 years ago
|
/*
|
||
|
|
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
|