| 1 | /* Driver module for Hitachi HD44780 based Optrex DMC-20481 LCD display |
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| 2 | * The module is operated in it's 4 bit-mode to be connected to a single |
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| 3 | * 8 bit-port |
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| 4 | * |
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| 5 | * Copyright (c) 1998 Richard Rognlie GNU Public License |
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| 6 | * <rrognlie@gamerz.net> |
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| 7 | * |
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| 8 | * Large quantities of this code lifted (nearly verbatim) from |
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| 9 | * the lcd4.c module of lcdtext. Copyright (C) 1997 Matthias Prinke |
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| 10 | * <m.prinke@trashcan.mcnet.de> and covered by GNU's GPL. |
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| 11 | * In particular, this program is free software and comes WITHOUT |
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| 12 | * ANY WARRANTY. |
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| 13 | * |
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| 14 | * Matthias stole (er, adapted) the code from the package lcdtime by |
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| 15 | * Benjamin Tse (blt@mundil.cs.mu.oz.au), August/October 1995 |
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| 16 | * which uses the LCD-controller's 8 bit-mode. |
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| 17 | * References: port.h by <damianf@wpi.edu> |
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| 18 | * Data Sheet LTN211, Philips |
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| 19 | * Various FAQs and TXTs about Hitachi's LCD Controller HD44780 - |
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| 20 | * www.paranoia.com/~filipg is a good starting point ??? |
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| 21 | */ |
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| 22 | |
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| 23 | #ifndef HD44780_H |
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| 24 | #define HD44780_H |
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| 25 | |
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| 26 | #include "port.h" |
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| 27 | |
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| 28 | |
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| 29 | extern lcd_logical_driver *hd44780; |
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| 30 | |
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| 31 | int HD44780_init(struct lcd_logical_driver *driver, char *args); |
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| 32 | void HD44780_close(); |
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| 33 | void HD44780_flush(); |
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| 34 | void HD44780_flush_box(int lft, int top, int rgt, int bot); |
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| 35 | int HD44780_contrast(int contrast); |
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| 36 | void HD44780_backlight(int on); |
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| 37 | void HD44780_init_vbar(); |
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| 38 | void HD44780_init_hbar(); |
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| 39 | void HD44780_vbar(int x, int len); |
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| 40 | void HD44780_hbar(int x, int y, int len); |
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| 41 | void HD44780_init_num(); |
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| 42 | void HD44780_num(int x, int num); |
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| 43 | void HD44780_set_char(int n, char *dat); |
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| 44 | void HD44780_icon(int which, char dest); |
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| 45 | void HD44780_draw_frame(char *dat); |
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| 46 | |
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| 47 | |
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| 48 | |
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| 49 | #endif |
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