| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364 |
- /*
- LUFA Library
- Copyright (C) Dean Camera, 2018.
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
- */
- /*
- Copyright 2018 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
|
