/* $Id: BeckmannEgle.c,v 1.16 2003/09/13 06:45:43 reinelt Exp $ * * driver for Beckmann+Egle mini terminals * * Copyright 2000 by Michael Reinelt (reinelt@eunet.at) * * This program 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. * * This program 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 1.16  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 8typedef 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 ("Port", NULL);  if (port==NULL || *port=='\0') {    error ("BeckmannEgle: no 'Port' entry in %s", cfg_source());    return -1;  }  Port=strdup(port);  s=cfg_get("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 }};