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author | Jack Humbert <jack.humb@gmail.com> | 2017-07-07 11:55:23 -0400 |
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committer | Jack Humbert <jack.humb@gmail.com> | 2017-07-07 11:55:23 -0400 |
commit | 8655d4f4948b2deef7844503c8d690f23ac1a062 (patch) | |
tree | b2c6effc9d6cd5b5b43933a1e53b8bf17e9e82cf /lib/lufa/Projects/SerialToLCD/Lib/HD44780.h | |
parent | 1896c76a2928c96f9ab7947bec2ef8dd37623cff (diff) | |
parent | 60b30c036397cb5627fa374bb930794b225daa29 (diff) | |
download | firmware-8655d4f4948b2deef7844503c8d690f23ac1a062.tar.gz firmware-8655d4f4948b2deef7844503c8d690f23ac1a062.tar.bz2 firmware-8655d4f4948b2deef7844503c8d690f23ac1a062.zip |
Merge commit '60b30c036397cb5627fa374bb930794b225daa29' as 'lib/lufa'
Diffstat (limited to 'lib/lufa/Projects/SerialToLCD/Lib/HD44780.h')
-rw-r--r-- | lib/lufa/Projects/SerialToLCD/Lib/HD44780.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/lib/lufa/Projects/SerialToLCD/Lib/HD44780.h b/lib/lufa/Projects/SerialToLCD/Lib/HD44780.h new file mode 100644 index 000000000..012803785 --- /dev/null +++ b/lib/lufa/Projects/SerialToLCD/Lib/HD44780.h @@ -0,0 +1,64 @@ +/* + 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 |