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-rw-r--r--Cwlinux.c533
1 files changed, 0 insertions, 533 deletions
diff --git a/Cwlinux.c b/Cwlinux.c
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index 30f181b..0000000
--- a/Cwlinux.c
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@@ -1,533 +0,0 @@
-/* $Id: Cwlinux.c,v 1.19 2004/01/30 20:57:55 reinelt Exp $
- *
- * driver for Cwlinux serial display modules
- *
- * Copyright 2002 Andrew Ip <aip@cwlinux.com>
- *
- * 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: Cwlinux.c,v $
- * Revision 1.19 2004/01/30 20:57:55 reinelt
- * HD44780 patch from Martin Hejl
- * dmalloc integrated
- *
- * Revision 1.18 2004/01/29 04:40:02 reinelt
- * every .c file includes "config.h" now
- *
- * 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 2003/11/30 16:18:36 reinelt
- * Cwlinux: invalidate Framebuffer in case a char got redefined
- *
- * Revision 1.15 2003/10/05 17:58:50 reinelt
- * libtool junk; copyright messages cleaned up
- *
- * Revision 1.14 2003/09/13 06:45:43 reinelt
- * icons for all remaining drivers
- *
- * 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 2003/08/01 05:15:42 reinelt
- * last cleanups for 0.9.9
- *
- * Revision 1.9 2003/07/24 04:48:09 reinelt
- * 'soft clear' needed for virtual rows
- *
- * Revision 1.8 2003/05/19 05:55:17 reinelt
- * Cwlinux sleep optimization
- *
- * Revision 1.7 2003/05/14 06:17:39 reinelt
- * added support for CW1602
- *
- * Revision 1.6 2003/02/24 04:50:57 reinelt
- * cwlinux fixes
- *
- * Revision 1.5 2003/02/22 07:53:09 reinelt
- * cfg_get(key,defval)
- *
- * Revision 1.4 2003/02/22 07:23:24 reinelt
- * Cwlinux fixes
- *
- * Revision 1.3 2002/09/12 05:24:54 reinelt
- * code cleanup, character defining for bars
- *
- * Revision 1.2 2002/09/11 05:32:35 reinelt
- * changed to use new bar functions
- *
- * Revision 1.1 2002/09/11 05:16:32 reinelt
- * added Cwlinux driver
- *
- */
-
-/*
- *
- * exported fuctions:
- *
- * struct LCD Cwlinux[]
- *
- */
-
-#include "config.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <termios.h>
-#include <fcntl.h>
-
-#include "debug.h"
-#include "cfg.h"
-#include "lock.h"
-#include "display.h"
-#include "bar.h"
-#include "icon.h"
-
-#ifdef WITH_DMALLOC
-#include <dmalloc.h>
-#endif
-
-#define CHARS 8
-
-static LCD Lcd;
-static char *Port = NULL;
-static speed_t Speed;
-static int Device = -1;
-static int Icons;
-
-static char *FrameBuffer1=NULL;
-static char *FrameBuffer2=NULL;
-
-
-static int CW_open(void)
-{
- int fd;
- pid_t pid;
- struct termios portset;
-
- if ((pid = lock_port(Port)) != 0) {
- if (pid == -1)
- error("Cwlinux: port %s could not be locked", Port);
- else
- error("Cwlinux: port %s is locked by process %d", Port, pid);
- return -1;
- }
-
- fd = open(Port, O_RDWR | O_NOCTTY | O_NDELAY);
- if (fd == -1) {
- error("Cwlinux: open(%s) failed: %s", Port, strerror(errno));
- unlock_port(Port);
- return -1;
- }
- if (tcgetattr(fd, &portset) == -1) {
- error("Cwlinux: tcgetattr(%s) failed: %s", Port, strerror(errno));
- unlock_port(Port);
- return -1;
- }
- cfmakeraw(&portset);
- cfsetispeed(&portset, Speed);
- cfsetospeed(&portset, Speed);
- if (tcsetattr(fd, TCSANOW, &portset) == -1) {
- error("Cwlinux: tcsetattr(%s) failed: %s", Port, strerror(errno));
- unlock_port(Port);
- return -1;
- }
-
- return fd;
-}
-
-
-static void CW_write(char *string, int len)
-{
- int ret;
-
- ret=write (Device, string, len);
- if (ret<0 && errno==EAGAIN) {
- usleep(1000);
- ret=write (Device, string, len);
- }
- if (ret<0) {
- error ("Cwlinux: write(%s) failed: %s", Port, strerror(errno));
- }
-}
-
-
-#if 0
-static int CW_read(char *string, int len)
-{
- int ret;
-
- ret=read (Device, string, len);
- if (ret<0 && errno==EAGAIN) {
- debug ("read(): EAGAIN");
- usleep(10000);
- ret=read (Device, string, len);
- }
- debug ("read(%s)=%d", string, ret);
-
- if (ret<0) {
- error("Cwlinux: read() failed: %s", strerror(errno));
- }
-
- usleep(20);
-
- return ret;
-}
-#endif
-
-static void CW_Goto(int row, int col)
-{
- char cmd[6]="\376Gxy\375";
- cmd[2]=(char)col;
- cmd[3]=(char)row;
- CW_write(cmd,5);
-}
-
-
-static void CW12232_define_char (int ascii, char *buffer)
-{
- int i, j;
- char cmd[10]="\376Nn123456\375";
-
- cmd[2]=(char)(ascii+1);
-
- // Cwlinux uses a vertical bitmap layout, so
- // we have to kind of 'rotate' the bitmap.
-
- for (i=0; i<6;i++) {
- cmd[3+i]=0;
- for (j=0; j<8;j++) {
- if (buffer[j] & (1<<(5-i))) {
- cmd[3+i]|=(1<<j);
- }
- }
- }
- CW_write(cmd,10);
-}
-
-
-static void CW1602_define_char (int ascii, char *buffer)
-{
- int i;
- char cmd[12]="\376Nn12345678\375";
-
- cmd[2]=(char)(ascii+1);
-
- for (i=0; i<8; i++) {
- cmd[3+i]=buffer[i];
- }
- CW_write(cmd,12);
- usleep(20); // delay for cw1602 to settle the character defined!
-}
-
-
-int CW_clear(int full)
-{
-
- memset (FrameBuffer1, ' ', Lcd.rows*Lcd.cols*sizeof(char));
-
- icon_clear();
- bar_clear();
-
- if (full) {
- memset (FrameBuffer2, ' ', Lcd.rows*Lcd.cols*sizeof(char));
-#if 0
- CW_write("\376X\375",3);
-#else
- // for some mysterious reason, we have to sleep after
- // the command _and_ after the CMD_END...
- usleep(20);
- CW_write("\376X",2);
- usleep(20);
- CW_write("\375",1);
- usleep(20);
-#endif
- }
-
- return 0;
-}
-
-
-static void CW_Brightness(void)
-{
- int level;
- char cmd[5]="\376A_\375";
-
- if (cfg_number(NULL, "Brightness", 8, 0, 8, &level)<0) return;
-
- switch (level) {
- case 0:
- // backlight off
- CW_write ("\376F\375", 3);
- break;
- case 8:
- // backlight on
- CW_write ("\376B\375", 3);
- break;
- default:
- // backlight level
- cmd[2]=level;
- CW_write (cmd, 4);
- break;
- }
-}
-
-
-int CW_init(LCD * Self)
-{
- char *port;
- int speed;
- // char buffer[16];
-
- 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 ("Cwlinux: framebuffer could not be allocated: malloc() failed");
- return -1;
- }
-
- if (Port) {
- free(Port);
- Port = NULL;
- }
-
- port = cfg_get(NULL, "Port",NULL);
- if (port == NULL || *port == '\0') {
- error("Cwlinux: no 'Port' entry in %s", cfg_source());
- return -1;
- }
- Port = strdup(port);
-
- if (cfg_number(NULL, "Speed", 19200, 9600,19200, &speed)<0) return -1;
- switch (speed) {
- case 9600:
- Speed = B9600;
- break;
- case 19200:
- Speed = B19200;
- break;
- default:
- error("Cwlinux: unsupported speed '%d' in %s", speed, cfg_source());
- return -1;
- }
-
- debug("using port %s at %d baud", Port, speed);
-
- Device = CW_open();
- if (Device == -1)
- return -1;
-
- // this does not work as I'd expect it...
-#if 0
- // read firmware version
- CW_read(buffer,sizeof(buffer));
- usleep(100000);
- CW_write ("\3761", 2);
- usleep(100000);
- CW_write ("\375", 1);
- usleep(100000);
- if (CW_read(buffer,2)!=2) {
- info ("unable to read firmware version!");
- }
- info ("Cwlinux Firmware %d.%d", (int)buffer[0], (int)buffer[1]);
-#endif
-
- CW_clear(1);
-
- // auto line wrap off
- CW_write ("\376D\375", 3);
-
- // auto scroll off
- // CW_write ("\376R\375", 3);
-
- // underline cursor off
- CW_write ("\376K\375", 3);
-
- // backlight on
- CW_write ("\376B\375", 3);
-
- // backlight brightness
- CW_Brightness();
-
- 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, Lcd.xres, Lcd.yres, CHARS, Icons, CW12232_define_char);
- Self->icons=Icons;
- Lcd.icons=Icons;
- }
-
- bar_init(Lcd.rows, Lcd.cols, Lcd.xres, Lcd.yres, CHARS-Icons);
- bar_add_segment( 0, 0,255, 32); // ASCII 32 = blank
-
- return 0;
-}
-
-
-int CW_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 CW_bar(int type, int row, int col, int max, int len1, int len2)
-{
- return bar_draw (type, row, col, max, len1, len2);
-}
-
-
-int CW_icon (int num, int seq, int row, int col)
-{
- return icon_draw (num, seq, row, col);
-}
-
-
-int CW_flush(void)
-{
- int row, col, pos1, pos2;
- int c, equal;
-
- 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++; // blank
- FrameBuffer1[row*Lcd.cols+col]=(char)c;
- // invalidate FrameBuffer:
- // Cwlinux does not update the display of a user-defined char
- // if it is redefined only. We have to definitely write it
- // to the display! We force this by invalidating the DoubleBuffer.
- // Fixme: This is bad: we should try to remember which chars
- // got redefined, and invalidate only those...
- FrameBuffer2[row*Lcd.cols+col]=0;
- }
- }
- for (col = 0; col < Lcd.cols; col++) {
- if (FrameBuffer1[row*Lcd.cols+col]==FrameBuffer2[row*Lcd.cols+col]) continue;
- CW_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 five bytes, too.
- if (++equal>5) break;
- } else {
- pos2=col;
- equal=0;
- }
- }
- CW_write (FrameBuffer1+row*Lcd.cols+pos1, pos2-pos1+1);
- }
- }
-
- memcpy (FrameBuffer2, FrameBuffer1, Lcd.rows*Lcd.cols*sizeof(char));
-
- return 0;
-}
-
-int CW12232_flush(void)
-{
- bar_process(CW12232_define_char);
- return CW_flush();
-}
-
-int CW1602_flush(void)
-{
- bar_process(CW1602_define_char);
- return CW_flush();
-}
-
-
-int CW_quit(void)
-{
- info("Cwlinux: shutting down.");
-
- debug("closing port %s", Port);
- close(Device);
- unlock_port(Port);
-
-
- if (FrameBuffer1) {
- free(FrameBuffer1);
- FrameBuffer1=NULL;
- }
-
- if (FrameBuffer2) {
- free(FrameBuffer2);
- FrameBuffer2=NULL;
- }
-
- return (0);
-}
-
-
-LCD Cwlinux[] = {
- { name: "CW12232",
- rows: 4,
- cols: 20,
- xres: 6,
- yres: 8,
- bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2,
- icons: 0,
- gpos: 0,
- init: CW_init,
- clear: CW_clear,
- put: CW_put,
- bar: CW_bar,
- icon: CW_icon,
- gpo: NULL,
- flush: CW12232_flush,
- quit: CW_quit
- },
- { name: "CW1602",
- rows: 2,
- cols: 16,
- xres: 5,
- yres: 8,
- bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2,
- icons: 0,
- gpos: 0,
- init: CW_init,
- clear: CW_clear,
- put: CW_put,
- bar: CW_bar,
- icon: CW_icon,
- gpo: NULL,
- flush: CW1602_flush,
- quit: CW_quit
- },
- {NULL}
-};
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