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archived-lcd4linux/BeckmannEgle.c
reinelt 9dc6ff97fe [lcd4linux @ 2004-01-09 04:16:06 by reinelt] 
added 'section' argument to cfg_get(), but NULLed it on all calls by now.

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@298 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
2004-01-09 04:16:06 +00:00

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/* $Id: BeckmannEgle.c,v 1.18 2004/01/09 04:16:06 reinelt Exp $
*
* driver for Beckmann+Egle mini terminals
*
* Copyright 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: BeckmannEgle.c,v $
* Revision 1.18 2004/01/09 04:16:06 reinelt
* added 'section' argument to cfg_get(), but NULLed it on all calls by now.
*
* Revision 1.17 2003/10/05 17:58:50 reinelt
* libtool junk; copyright messages cleaned up
*
* Revision 1.16 2003/09/13 06:45:43 reinelt
* icons for all remaining drivers
*
* Revision 1.15 2003/08/24 05:17:58 reinelt
* liblcd4linux patch from Patrick Schemitz
*
* Revision 1.14 2003/08/16 07:31:35 reinelt
* double buffering in all drivers
*
* Revision 1.13 2003/07/24 04:48:09 reinelt
* 'soft clear' needed for virtual rows
*
* Revision 1.12 2003/02/22 07:53:09 reinelt
* cfg_get(key,defval)
*
* Revision 1.11 2002/08/22 05:51:36 reinelt
* cosmetic changes
*
* Revision 1.10 2002/08/19 10:51:06 reinelt
* M50530 driver using new generic bar functions
*
* Revision 1.9 2002/08/19 09:43:43 reinelt
* BeckmannEgle using new generic bar functions
*
* Revision 1.8 2002/08/19 07:36:29 reinelt
*
* finished bar.c, USBLCD is the first driver that uses the generic bar functions
*
* Revision 1.7 2002/08/19 04:41:20 reinelt
* introduced bar.c, moved bar stuff from display.h to bar.h
*
* Revision 1.6 2001/04/27 05:04:57 reinelt
* replaced OPEN_MAX with sysconf()
* replaced mktemp() with mkstemp()
* unlock serial port if open() fails
*
* Revision 1.5 2001/02/13 09:00:13 reinelt
* prepared framework for GPO's (general purpose outputs)
*
* Revision 1.4 2000/08/10 09:44:09 reinelt
* new debugging scheme: error(), info(), debug()
* uses syslog if in daemon mode
*
* Revision 1.3 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 1.2 2000/04/30 06:40:42 reinelt
* bars for Beckmann+Egle driver
*
* Revision 1.1 2000/04/28 05:19:55 reinelt
* first release of the Beckmann+Egle driver
*
*/
/*
*
* exported fuctions:
*
* struct LCD BeckmannEgle[]
*
*/
#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"
#define XRES 5
#define YRES 8
#define CHARS 8
typedef struct {
int cols;
int rows;
int type;
} MODEL;
static LCD Lcd;
static char *Port=NULL;
static int Device=-1;
static int Type=-1;
static int Icons;
static char *FrameBuffer1=NULL;
static char *FrameBuffer2=NULL;
static MODEL Model[]= {{ 16, 1, 0 },
{ 16, 2, 1 },
{ 16, 4, 2 },
{ 20, 1, 3 },
{ 20, 2, 4 },
{ 20, 4, 5 },
{ 24, 1, 6 },
{ 24, 2, 7 },
{ 32, 1, 8 },
{ 32, 2, 9 },
{ 40, 1, 10 },
{ 40, 2, 11 },
{ 40, 4, 12 },
{ 0, 0, 0 }};
static int BE_open (void)
{
int fd;
pid_t pid;
struct termios portset;
if ((pid=lock_port(Port))!=0) {
if (pid==-1)
error ("BeckmannEgle: port %s could not be locked", Port);
else
error ("BeckmannEgle: port %s is locked by process %d", Port, pid);
return -1;
}
fd = open(Port, O_RDWR | O_NOCTTY | O_NDELAY);
if (fd==-1) {
error ("BeckmannEgle: open(%s) failed: %s", Port, strerror(errno));
unlock_port(Port);
return -1;
}
if (tcgetattr(fd, &portset)==-1) {
error ("BeckmannEgle: tcgetattr(%s) failed: %s", Port, strerror(errno));
unlock_port(Port);
return -1;
}
cfmakeraw(&portset); // 8N1
portset.c_cflag |= CSTOPB; // 2 stop bits
cfsetospeed(&portset, B9600); // 9600 baud
if (tcsetattr(fd, TCSANOW, &portset)==-1) {
error ("BeckmannEgle: tcsetattr(%s) failed: %s", Port, strerror(errno));
unlock_port(Port);
return -1;
}
return fd;
}
static void BE_write (char *string, int len)
{
if (Device==-1) return;
if (write (Device, string, len)==-1) {
if (errno==EAGAIN) {
usleep(1000);
if (write (Device, string, len)>=0) return;
}
error ("BeckmannEgle: write(%s) failed: %s", Port, strerror(errno));
}
}
static void BE_define_char (int ascii, char *buffer)
{
int i;
char cmd[32];
char *p;
p=cmd;
*p++='\033';
*p++='&';
*p++='T'; // enter transparent mode
*p++='\0'; // write cmd
*p++=0x40|8*ascii; // write CGRAM
for (i=0; i<YRES; i++) {
*p++='\1'; // write data
*p++=buffer[i]; // character bitmap
}
*p++='\377'; // leave transparent mode
BE_write (cmd, p-cmd);
}
int BE_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));
BE_write ("\033&#", 3);
}
return 0;
}
int BE_init (LCD *Self)
{
int i, rows=-1, cols=-1;
char *port, *s;
char buffer[5];
if (Port) {
free (Port);
Port=NULL;
}
port=cfg_get (NULL, "Port", NULL);
if (port==NULL || *port=='\0') {
error ("BeckmannEgle: no 'Port' entry in %s", cfg_source());
return -1;
}
Port=strdup(port);
s=cfg_get(NULL, "Type", NULL);
if (s==NULL || *s=='\0') {
error ("BeckmannEgle: no 'Type' entry in %s", cfg_source());
return -1;
}
if (sscanf(s,"%dx%d",&cols,&rows)!=2 || rows<1 || cols<1) {
error ("BeckmannEgle: bad type '%s'", s);
return -1;
}
Type=-1;
for (i=0; Model[i].cols; i++) {
if (Model[i].cols==cols && Model[i].rows==rows) {
Type=Model[i].type;
break;
}
}
if (Type==-1) {
error ("BeckmannEgle: unsupported model '%dx%d'", cols, rows);
return -1;
}
debug ("using %dx%d display at port %s", cols, rows, Port);
Self->rows=rows;
Self->cols=cols;
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 ("BeckmannEgle: framebuffer could not be allocated: malloc() failed");
return -1;
}
Device=BE_open();
if (Device==-1) return -1;
snprintf (buffer, sizeof(buffer), "\033&s%c", Type);
BE_write (buffer, 4); // select display type
BE_write ("\033&D", 3); // cursor off
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, BE_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
BE_clear(1);
return 0;
}
void BE_goto (int row, int col)
{
char cmd[7]="\033[y;xH";
cmd[2]=(char)row;
cmd[4]=(char)col;
BE_write (cmd, 6);
}
int BE_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 BE_bar (int type, int row, int col, int max, int len1, int len2)
{
return bar_draw (type, row, col, max, len1, len2);
}
int BE_icon (int num, int seq, int row, int col)
{
return icon_draw (num, seq, row, col);
}
int BE_flush (void)
{
int row, col, pos1, pos2;
int c, equal;
bar_process(BE_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) {
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;
BE_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 some bytes, too.
if (++equal>5) break;
} else {
pos2=col;
equal=0;
}
}
BE_write (FrameBuffer1+row*Lcd.cols+pos1, pos2-pos1+1);
}
}
memcpy (FrameBuffer2, FrameBuffer1, Lcd.rows*Lcd.cols*sizeof(char));
return 0;
}
int BE_quit (void)
{
debug ("closing port %s", Port);
close (Device);
unlock_port(Port);
info("BeckmannEgle: shutting down.");
if (FrameBuffer1) {
free(FrameBuffer1);
FrameBuffer1=NULL;
}
if (FrameBuffer2) {
free(FrameBuffer2);
FrameBuffer2=NULL;
}
return 0;
}
LCD BeckmannEgle[] = {
{ name: "BLC100x",
rows: 0,
cols: 0,
xres: XRES,
yres: YRES,
bars: BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2,
icons: 0,
gpos: 0,
init: BE_init,
clear: BE_clear,
put: BE_put,
bar: BE_bar,
icon: BE_icon,
gpo: NULL,
flush: BE_flush,
quit: BE_quit
},
{ NULL }
};
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