diff options
Diffstat (limited to 'Projects/SerialToLCD/Lib/HD44780.h')
-rw-r--r-- | Projects/SerialToLCD/Lib/HD44780.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/Projects/SerialToLCD/Lib/HD44780.h b/Projects/SerialToLCD/Lib/HD44780.h new file mode 100644 index 000000000..a800ae712 --- /dev/null +++ b/Projects/SerialToLCD/Lib/HD44780.h @@ -0,0 +1,64 @@ +/* + 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 |