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Diffstat (limited to '')
| -rw-r--r-- | M50530.c | 401 |
1 files changed, 0 insertions, 401 deletions
diff --git a/M50530.c b/M50530.c deleted file mode 100644 index eec199d..0000000 --- a/M50530.c +++ /dev/null @@ -1,401 +0,0 @@ -/* $Id: M50530.c,v 1.18 2004/01/30 20:57:55 reinelt Exp $ - * - * driver for display modules based on the M50530 chip - * - * Copyright 1999, 2000 Michael Reinelt <reinelt@eunet.at> - * - * This file is part of LCD4Linux. - * - * 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: M50530.c,v $ - * Revision 1.18 2004/01/30 20:57:55 reinelt - * HD44780 patch from Martin Hejl - * dmalloc integrated - * - * Revision 1.17 2004/01/09 04:16:06 reinelt - * added 'section' argument to cfg_get(), but NULLed it on all calls by now. - * - * Revision 1.16 2003/10/05 17:58:50 reinelt - * libtool junk; copyright messages cleaned up - * - * Revision 1.15 2003/09/11 04:09:53 reinelt - * minor cleanups - * - * Revision 1.14 2003/09/10 03:48:22 reinelt - * Icons for M50530, new processing scheme (Ticks.Text...) - * - * Revision 1.13 2003/09/09 06:54:43 reinelt - * new function 'cfg_number()' - * - * Revision 1.12 2003/08/24 05:17:58 reinelt - * liblcd4linux patch from Patrick Schemitz - * - * Revision 1.11 2003/08/16 07:31:35 reinelt - * double buffering in all drivers - * - * Revision 1.10 2003/08/15 07:54:07 reinelt - * HD44780 4 bit mode implemented - * - * Revision 1.9 2003/07/24 04:48:09 reinelt - * 'soft clear' needed for virtual rows - * - * Revision 1.8 2003/04/07 06:02:59 reinelt - * further parallel port abstraction - * - * Revision 1.7 2003/04/04 06:01:59 reinelt - * new parallel port abstraction scheme - * - * Revision 1.6 2003/02/22 07:53:10 reinelt - * cfg_get(key,defval) - * - * Revision 1.5 2002/08/19 10:51:06 reinelt - * M50530 driver using new generic bar functions - * - * Revision 1.4 2002/08/19 07:36:29 reinelt - * - * finished bar.c, USBLCD is the first driver that uses the generic bar functions - * - * Revision 1.3 2002/08/19 04:41:20 reinelt - * introduced bar.c, moved bar stuff from display.h to bar.h - * - * Revision 1.2 2002/04/30 07:20:15 reinelt - * - * implemented the new ndelay(nanoseconds) in all parallel port drivers - * - * Revision 1.1 2001/09/11 05:31:37 reinelt - * M50530 driver - * - * - */ - -/* - * - * exported fuctions: - * - * struct LCD M50530[] - * - */ - -#include "config.h" - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> - -#include "debug.h" -#include "cfg.h" -#include "display.h" -#include "bar.h" -#include "icon.h" -#include "parport.h" -#include "udelay.h" - -#ifdef WITH_DMALLOC -#include <dmalloc.h> -#endif - -#define XRES 5 -#define YRES 8 -#define CHARS 8 - -static LCD Lcd; -static int GPO=0; -static int Icons; - -static char *FrameBuffer1=NULL; -static char *FrameBuffer2=NULL; - - -static unsigned char SIGNAL_EX; -static unsigned char SIGNAL_IOC1; -static unsigned char SIGNAL_IOC2; -static unsigned char SIGNAL_GPO; - -static void M5_command (unsigned int cmd, int delay) -{ - - // put data on DB1..DB8 - parport_data (cmd&0xff); - - // set I/OC1 (Select inverted) - // set I/OC2 (AutoFeed inverted) - parport_control (SIGNAL_IOC1|SIGNAL_IOC2, - (cmd&0x200?SIGNAL_IOC1:0) | - (cmd&0x100?SIGNAL_IOC2:0)); - - // Control data setup time - ndelay(200); - - // send command - // EX signal pulse width = 500ns - // Fixme: why 500 ns? Datasheet says 200ns - parport_toggle (SIGNAL_EX, 1, 500); - - // wait - udelay(delay); - -} - - -static void M5_write (unsigned char *string, int len) -{ - unsigned int cmd; - - while (len--) { - cmd=*string++; - M5_command (0x100|cmd, 20); - } -} - - -static void M5_setGPO (int bits) -{ - if (Lcd.gpos>0) { - - // put data on DB1..DB8 - parport_data (bits); - - // 74HCT573 set-up time - ndelay(20); - - // send data - // 74HCT573 enable pulse width = 24ns - parport_toggle (SIGNAL_GPO, 1, 24); - } -} - - -static void M5_define_char (int ascii, char *buffer) -{ - M5_command (0x300+192+8*ascii, 20); - M5_write (buffer, 8); -} - - -int M5_clear (int full) -{ - - memset (FrameBuffer1, ' ', Lcd.rows*Lcd.cols*sizeof(char)); - - icon_clear(); - bar_clear(); - - GPO=0; - - if (full) { - memset (FrameBuffer2, ' ', Lcd.rows*Lcd.cols*sizeof(char)); - M5_command (0x0001, 1250); // clear display - M5_setGPO (GPO); // All GPO's off - } - - return 0; -} - - -int M5_init (LCD *Self) -{ - int rows=-1, cols=-1, gpos=-1; - char *s; - - s=cfg_get(NULL, "Size", NULL); - if (s==NULL || *s=='\0') { - error ("M50530: no 'Size' entry in %s", cfg_source()); - return -1; - } - if (sscanf(s,"%dx%d",&cols,&rows)!=2 || rows<1 || cols<1) { - error ("M50530: bad size '%s'",s); - return -1; - } - - if (cfg_number(NULL, "GPOs", 0, 0, 8, &gpos)<0) return -1; - - Self->rows=rows; - Self->cols=cols; - Self->gpos=gpos; - Lcd=*Self; - - // Init the framebuffers - FrameBuffer1 = (char*)malloc(Lcd.cols*Lcd.rows*sizeof(char)); - FrameBuffer2 = (char*)malloc(Lcd.cols*Lcd.rows*sizeof(char)); - if (FrameBuffer1==NULL || FrameBuffer2==NULL) { - error ("HD44780: framebuffer could not be allocated: malloc() failed"); - return -1; - } - - if ((SIGNAL_EX = parport_wire_ctrl ("EX", "STROBE"))==0xff) return -1; - if ((SIGNAL_IOC1 = parport_wire_ctrl ("IOC1", "SELECT"))==0xff) return -1; - if ((SIGNAL_IOC2 = parport_wire_ctrl ("IOC2", "AUTOFD"))==0xff) return -1; - if ((SIGNAL_GPO = parport_wire_ctrl ("GPO", "INIT") )==0xff) return -1; - - if (parport_open() != 0) { - error ("M50530: could not initialize parallel port!"); - return -1; - } - - // set direction: write - parport_direction (0); - - // initialize display - M5_command (0x00FA, 20); // set function mode - M5_command (0x0020, 20); // set display mode - M5_command (0x0050, 20); // set entry mode - M5_command (0x0030, 20); // set display mode - - if (cfg_number(NULL, "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, M5_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 - - M5_clear(1); - - return 0; -} - - -void M5_goto (int row, int col) -{ - int pos; - - pos=row*48+col; - if (row>3) pos-=168; - M5_command (0x300|pos, 20); -} - - -int M5_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 M5_bar (int type, int row, int col, int max, int len1, int len2) -{ - return bar_draw (type, row, col, max, len1, len2); -} - - -int M5_icon (int num, int seq, int row, int col) -{ - return icon_draw (num, seq, row, col); -} - - -int M5_gpo (int num, int val) -{ - if (num>=Lcd.gpos) - return -1; - - if (val) { - GPO |= 1<<num; // set bit - } else { - GPO &= ~(1<<num); // clear bit - } - return 0; -} - - -int M5_flush (void) -{ - int row, col, pos1, pos2; - int c, equal; - - bar_process(M5_define_char); - - for (row=0; row<Lcd.rows; row++) { - for (col=0; col<Lcd.cols; col++) { - c=bar_peek(row, col); - if (c==-1) c=icon_peek(row, col); - if (c!=-1) { - if (c!=32) c+=248; //blank - FrameBuffer1[row*Lcd.cols+col]=(char)c; - } - } - for (col=0; col<Lcd.cols; col++) { - if (FrameBuffer1[row*Lcd.cols+col]==FrameBuffer2[row*Lcd.cols+col]) continue; - M5_goto (row, col); - for (pos1=col++, pos2=pos1, equal=0; col<Lcd.cols; col++) { - if (FrameBuffer1[row*Lcd.cols+col]==FrameBuffer2[row*Lcd.cols+col]) { - // If we find just one equal byte, we don't break, because this - // would require a goto, which takes one byte, too. - if (++equal>2) break; - } else { - pos2=col; - equal=0; - } - } - M5_write (FrameBuffer1+row*Lcd.cols+pos1, pos2-pos1+1); - } - } - - memcpy (FrameBuffer2, FrameBuffer1, Lcd.rows*Lcd.cols*sizeof(char)); - - M5_setGPO(GPO); - - return 0; -} - - -int M5_quit (void) -{ - info("M50530: shutting down."); - - if (FrameBuffer1) { - free(FrameBuffer1); - FrameBuffer1=NULL; - } - - if (FrameBuffer2) { - free(FrameBuffer2); - FrameBuffer2=NULL; - } - - return parport_close(); -} - - -LCD M50530[] = { - { name: "M50530", - rows: 0, - cols: 0, - xres: XRES, - yres: YRES, - bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2, - icons: 0, - gpos: 0, - init: M5_init, - clear: M5_clear, - put: M5_put, - bar: M5_bar, - icon: M5_icon, - gpo: M5_gpo, - flush: M5_flush, - quit: M5_quit - }, - { NULL } -}; 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