/* $Id: HD44780.c,v 1.47 2003/11/12 05:42:35 reinelt Exp $ * * driver for display modules based on the HD44780 chip * * Copyright 1999, 2000 Michael Reinelt * * This file is part of LCD4Linux. * * Modification for 4-Bit mode * 2003 Martin Hejl (martin@hejl.de) * * Modification for 2nd controller support * 2003 Jesse Brook Kovach * * * LCD4Linux is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * LCD4Linux 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * $Log: HD44780.c,v $ * Revision 1.47 2003/11/12 05:42:35 reinelt * small changes to the 16x4 handling * * Revision 1.46 2003/10/08 06:48:47 nicowallmeier * special handling for 16x4 displays * * Revision 1.45 2003/10/08 06:45:00 nicowallmeier * Support of two displays of the same size * * Revision 1.44 2003/10/05 17:58:50 reinelt * libtool junk; copyright messages cleaned up * * Revision 1.43 2003/09/29 06:12:56 reinelt * changed default HD44780 wiring: unused signals are GND * * Revision 1.42 2003/09/21 06:43:02 reinelt * * * MatrixOrbital: bidirectional communication * HD44780: special handling for 16x1 displays (thanks to Maciej Witkowiak) * * Revision 1.41 2003/09/13 06:20:39 reinelt * HD44780 timings changed; deactivated libtool * * Revision 1.40 2003/09/11 04:09:52 reinelt * minor cleanups * * Revision 1.39 2003/09/10 03:48:22 reinelt * Icons for M50530, new processing scheme (Ticks.Text...) * * Revision 1.38 2003/09/09 11:47:47 reinelt * basic icon support for HD44780 * * Revision 1.37 2003/09/09 06:54:43 reinelt * new function 'cfg_number()' * * Revision 1.36 2003/08/24 05:17:58 reinelt * liblcd4linux patch from Patrick Schemitz * * Revision 1.35 2003/08/22 03:45:08 reinelt * bug in parallel port code fixed, more icons stuff * * Revision 1.34 2003/08/19 05:23:55 reinelt * HD44780 dual-controller patch from Jesse Brook Kovach * * Revision 1.33 2003/08/19 04:28:41 reinelt * more Icon stuff, minor glitches fixed * * Revision 1.32 2003/08/16 07:31:35 reinelt * double buffering in all drivers * * Revision 1.31 2003/08/15 07:54:07 reinelt * HD44780 4 bit mode implemented * * Revision 1.30 2003/08/12 05:10:31 reinelt * first version of HD44780 4Bit-Mode patch * * Revision 1.29 2003/07/24 04:48:09 reinelt * 'soft clear' needed for virtual rows * * Revision 1.28 2003/04/07 06:02:58 reinelt * further parallel port abstraction * * Revision 1.27 2003/04/04 06:01:59 reinelt * new parallel port abstraction scheme * * Revision 1.26 2003/02/22 07:53:09 reinelt * cfg_get(key,defval) * * Revision 1.25 2002/08/19 09:11:34 reinelt * changed HD44780 to use generic bar functions * * Revision 1.24 2002/08/19 07:36:29 reinelt * * finished bar.c, USBLCD is the first driver that uses the generic bar functions * * Revision 1.23 2002/08/19 04:41:20 reinelt * introduced bar.c, moved bar stuff from display.h to bar.h * * Revision 1.22 2002/08/17 14:14:21 reinelt * * USBLCD fixes * * Revision 1.21 2002/04/30 07:20:15 reinelt * * implemented the new ndelay(nanoseconds) in all parallel port drivers * * Revision 1.20 2001/09/09 12:26:03 reinelt * GPO bug: INIT is _not_ inverted * * Revision 1.19 2001/03/15 15:49:22 ltoetsch * fixed compile HD44780.c, cosmetics * * Revision 1.18 2001/03/15 09:47:13 reinelt * * some fixes to ppdef * off-by-one bug in processor.c fixed * * Revision 1.17 2001/03/14 16:47:41 reinelt * minor cleanups * * Revision 1.16 2001/03/14 15:30:53 reinelt * * make ppdev compatible to earlier kernels * * Revision 1.15 2001/03/14 15:14:59 reinelt * added ppdev parallel port access * * Revision 1.14 2001/03/12 13:44:58 reinelt * * new udelay() using Time Stamp Counters * * Revision 1.13 2001/03/12 12:39:36 reinelt * * reworked autoconf a lot: drivers may be excluded, #define's went to config.h * * Revision 1.12 2001/02/14 07:40:16 reinelt * * first (incomplete) GPO implementation * * Revision 1.11 2001/02/13 12:43:24 reinelt * * HD_gpo() was missing * * Revision 1.10 2001/02/13 09:00:13 reinelt * * prepared framework for GPO's (general purpose outputs) * * Revision 1.9 2000/10/20 07:17:07 reinelt * * * corrected a bug in HD_goto() * Thanks to Gregor Szaktilla * * Revision 1.8 2000/08/10 09:44:09 reinelt * * new debugging scheme: error(), info(), debug() * uses syslog if in daemon mode * * Revision 1.7 2000/08/09 09:50:29 reinelt * * opened 0.98 development * removed driver-specific signal-handlers * added 'quit'-function to driver structure * added global signal-handler * * Revision 1.6 2000/07/31 10:43:44 reinelt * * some changes to support kernel-2.4 (different layout of various files in /proc) * * Revision 1.5 2000/07/31 06:46:35 reinelt * * eliminated some compiler warnings with glibc * * Revision 1.4 2000/04/15 16:56:52 reinelt * * moved delay loops to udelay.c * renamed -d (debugging) switch to -v (verbose) * new switch -d to calibrate delay loop * 'Delay' entry for HD44780 back again * delay loops will not calibrate automatically, because this will fail with hich CPU load * * Revision 1.3 2000/04/15 11:13:54 reinelt * * added '-d' (debugging) switch * added several debugging messages * removed config entry 'Delay' for HD44780 driver * delay loop for HD44780 will be calibrated automatically * * Revision 1.2 2000/04/13 06:09:52 reinelt * * added BogoMips() to system.c (not used by now, maybe sometimes we can * calibrate our delay loop with this value) * * added delay loop to HD44780 driver. It seems to be quite fast now. Hopeful
# DVB-T Berlin
# Created from http://www.ueberallfernsehen.de/data/senderliste.pdf
[CH25: RTL, RTL2, Super RTL, VOX]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 506000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = NONE
	MODULATION = QAM/16
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/8
	HIERARCHY = NONE
	INVERSION = AUTO

[CH27: Das Erste, RBB, Phoenix, EinsExtra / BrandenburgAktuell]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 522000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = NONE
	MODULATION = QAM/16
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/8
	HIERARCHY = NONE
	INVERSION = AUTO

[CH33: ZDF, 3sat, KiKa / ZDFneo, ZDFinfo]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 570000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = NONE
	MODULATION = QAM/16
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/4
	HIERARCHY = NONE
	INVERSION = AUTO

[CH39: QVC, DasVierte, Bibel.TV, BR-Fernsehen, n-tv, EuroNews/Channe21 Shop + 7 Radioprogr]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 618000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = NONE
	MODULATION = QAM/64
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/8
	HIERARCHY = NONE
	INVERSION = AUTO

[CH44: ProSieben, Sat.1, Kabel1, N24]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 658000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = NONE
	MODULATION = QAM/16
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/8
	HIERARCHY = NONE
	INVERSION = AUTO

[CH47: MDR, NDR, arte, hr]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 682000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = NONE
	MODULATION = QAM/16
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/8
	HIERARCHY = NONE
	INVERSION = AUTO

[CH50: Tele5, HSE 24, WDR, SWR (BW / RP)]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 706000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = NONE
	MODULATION = QAM/16
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/8
	HIERARCHY = NONE
	INVERSION = AUTO

[CH56: Eurosport, TV.B, Music1, sixx,]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 754000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = NONE
	MODULATION = QAM/16
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/8
	HIERARCHY = NONE
	INVERSION = AUTO

[CH59: BerlinerSpreekanal / JuveloTV, ServusTV, Anixe]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 778000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = NONE
	MODULATION = QAM/16
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/8
	HIERARCHY = NONE
	INVERSION = AUTO
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-12 17:32:28 +0000
HD_nibble(0x03, 0x03); udelay(T_INIT2); // 4 Bit mode, wait 100 us HD_nibble(0x03, 0x03); udelay(T_INIT1); // 4 Bit mode, wait 4.1 ms HD_nibble(0x03, 0x02); udelay(T_INIT2); // 4 Bit mode, wait 100 us HD_command (0x03, 0x28, T_EXEC); // 4 Bit mode, 1/16 duty cycle, 5x8 font } HD_command (0x03, 0x08, T_EXEC); // Display off, cursor off, blink off HD_command (0x03, 0x0c, T_CLEAR); // Display on, cursor off, blink off, wait 1.64 ms HD_command (0x03, 0x06, T_EXEC); // curser moves to right, no shift if (cfg_number("Icons", 0, 0, CHARS, &Icons)<0) return -1; if (Icons>0) { debug ("reserving %d of %d user-defined characters for icons", Icons, CHARS); icon_init(Lcd.rows, Lcd.cols, XRES, YRES, CHARS, Icons, HD_define_char); Self->icons=Icons; Lcd.icons=Icons; } bar_init(rows, cols, XRES, YRES, CHARS-Icons); bar_add_segment( 0, 0,255, 32); // ASCII 32 = blank bar_add_segment(255,255,255,255); // ASCII 255 = block HD_clear(1); return 0; } void HD_goto (int row, int col) { int pos; // handle multiple displays/controllers if (Controllers>1 && row>=Lcd.rows/2) { row -= Lcd.rows/2; Controller = 2; } else { Controller = 1; } // 16x1 Displays are organized as 8x2 :-( if (Lcd.cols==16 && Lcd.rows==1 && col>7) { row++; col-=8; } // 16x4 Displays use a slightly different layout if (Lcd.cols==16 && Lcd.rows==4) { pos=(row%2)*64+(row/2)*16+col; } else { pos=(row%2)*64+(row/2)*20+col; } HD_command (Controller, (0x80|pos), T_EXEC); } int HD_put (int row, int col, char *text) { char *p=FrameBuffer1+row*Lcd.cols+col; char *t=text; while (*t && col++<=Lcd.cols) { *p++=*t++; } return 0; } int HD_bar (int type, int row, int col, int max, int len1, int len2) { return bar_draw (type, row, col, max, len1, len2); } int HD_icon (int num, int seq, int row, int col) { return icon_draw (num, seq, row, col); } int HD_gpo (int num, int val) { if (num>=Lcd.gpos) return -1; if (val) { GPO |= 1<2) break; } else { pos2=col; equal=0; } // special handling of 16x1 displays if (Lcd.rows==1 && Lcd.cols==16 && col==7) { break; } } HD_write (Controller, FrameBuffer1+row*Lcd.cols+pos1, pos2-pos1+1, T_EXEC); } } memcpy (FrameBuffer2, FrameBuffer1, Lcd.rows*Lcd.cols*sizeof(char)); HD_setGPO(GPO); return 0; } int HD_quit (void) { info("HD44780: shutting down."); if (FrameBuffer1) { free(FrameBuffer1); FrameBuffer1=NULL; } if (FrameBuffer2) { free(FrameBuffer2); FrameBuffer2=NULL; } return parport_close(); } LCD HD44780[] = { { name: "HD44780", rows: 0, cols: 0, xres: XRES, yres: YRES, bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2, icons: 0, gpos: 0, init: HD_init, clear: HD_clear, put: HD_put, bar: HD_bar, icon: HD_icon, gpo: HD_gpo, flush: HD_flush, quit: HD_quit }, { NULL } };