-- -- file : hd44780m.jal -- author : Wouter van Ooijen -- cosmetics : Surducan Vasile -- date : 17-NOV-1998; MAY 2000 -- purpose : hd44780,KS0066,6426,-LCD drivers;interface common part -- used by : hd447804, hd447808 -- note : all delay timings may be reduced to 2.5 x -- for hd44780 driver, -- Copyright (C) 1998 Wouter van Ooijen -- -- This library is free software; you can redistribute it and/or -- modify it under the terms of the GNU Library General Public -- License as published by the Free Software Foundation; either -- version 2 of the License, or (at your option) any later version. -- -- This library is distributed in the hope that it will be useful, -- but WITHOUT ANY WARRANTY; without even the implied warranty of -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -- Library General Public License for more details. -- -- You should have received a copy of the GNU Library General Public -- License along with this library; if not, write to the -- Free Software Foundation, Inc., 59 Temple Place - Suite 330, -- Boston, MA 02111-1307, USA. -- procedure HD44780_clear is HD44780_instruction( 0b_0000_1000 ) -- display off HD44780_instruction( 0b_0000_0001 ) -- clear display delay_10uS( 200 ) HD44780_instruction( 0b_0000_0010 ) -- cursor home delay_10uS( 200 ) HD44780_instruction( 0b_0000_0110 ) -- entry, autoincrement, no shift HD44780_instruction( 0b_0000_1100 ) -- display on, cursor off, blink off delay_10uS( 200 ) end procedure procedure cursor_blink ( byte in x ) is -- x=1 character blink, cursor blink -- x=2 cursor display -- x=3 cursor display, character blink HD44780_instruction( 0b_0000_1100 + x ) end procedure procedure cursor_on is -- put the cursor after last written value HD44780_instruction( 0b_0000_1110 ) end procedure procedure cursor_off is -- switch off the cursor HD44780_instruction( 0b_0000_1100 ) end procedure procedure cursor_left is -- move cursor one location to left HD44780_instruction( 0b_0001_0000 ) end procedure procedure cursor_right is -- move cursor one location to right HD44780_instruction( 0b_0001_0100 ) end procedure procedure shift_left is -- flow the whole display to the left HD44780_instruction( 0b_0001_1000 ) end procedure procedure shift_right is -- flow the whole display to the right HD44780_instruction( 0b_0001_1100 ) end procedure -- HD44780 driver, 2 lines, 80,C0 begining address procedure HD44780_line1 is HD44780_instruction( 0b_1000_0000 ) end procedure procedure HD44780_position1 ( byte in x ) is HD44780_instruction( 0b_1000_0000 + x ) end procedure procedure HD44780_line2 is HD44780_instruction( 0b_1100_0000 ) end procedure procedure HD44780_position2 ( byte in x ) is HD44780_instruction( 0b_1100_0000 + x ) end procedure -- 6426 driver, 4 lines, 80,A0,C0,E0 begining address procedure _6426_line1 is HD44780_instruction( 0b_1000_0000 ) end procedure procedure _6426_position1 ( byte in x ) is HD44780_instruction( 0b_1000_0000 + x ) end procedure procedure _6426_line2 is HD44780_instruction( 0b_1010_0000 ) end procedure procedure _6426_position2 ( byte in x ) is HD44780_instruction( 0b_1010_0000 + x ) end procedure procedure _6426_line3 is HD44780_instruction( 0b_1100_0000 ) end procedure procedure _6426_position3 ( byte in x ) is HD44780_instruction( 0b_1100_0000 + x ) end procedure procedure _6426_line4 is HD44780_instruction( 0b_1110_0000 ) end procedure procedure _6426_position4 ( byte in x ) is HD44780_instruction( 0b_1110_0000 + x ) end procedure procedure HD44780_define( byte in x, byte in b0, byte in b1, byte in b2, byte in b3, byte in b4, byte in b5, byte in b6, byte in b7 ) is HD44780_instruction( 0x40 | ( x << 3 ) ) HD44780_write( b0 ) HD44780_write( b1 ) HD44780_write( b2 ) HD44780_write( b3 ) HD44780_write( b4 ) HD44780_write( b5 ) HD44780_write( b6 ) HD44780_write( b7 ) end procedure
file: /Techref/piclist/jal/hd44780-vs.htm, 4KB, , updated: 2000/8/15 11:32, local time: 2024/8/14 14:11,
3.17.80.242:LOG IN
|
©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions? <A HREF="http://sxlist.com/techref/piclist/jal/hd44780-vs.htm"> PIC JAL IO Routine </A> |
Did you find what you needed? |
Welcome to sxlist.com!sales, advertizing, & kind contributors just like you! Please don't rip/copy (here's why Copies of the site on CD are available at minimal cost. |
Welcome to sxlist.com! |
.