lcd4linux.git - lcd4linux

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Diffstat (limited to 'drv_generic_serial.h')

0 files changed, 0 insertions, 0 deletions

/* $Id: SIN.c,v 1.7 2001/04/27 05:04:57 reinelt Exp $ * * driver for SIN router displays * * 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: SIN.c,v $ * Revision 1.7 2001/04/27 05:04:57 reinelt * * replaced OPEN_MAX with sysconf() * replaced mktemp() with mkstemp() * unlock serial port if open() fails * * Revision 1.6 2001/02/13 09:00:13 reinelt * * prepared framework for GPO's (general purpose outputs) * * Revision 1.5 2000/12/07 20:47:54 reinelt * * first try for SIN bars * * Revision 1.4 2000/12/01 20:42:37 reinelt * * added debugging of SIN driver output, probably found the positioning bug (format %02x instead of %2x) * * Revision 1.3 2000/12/01 07:20:26 reinelt * * modified text positioning: row starts with 0, column is hexadecimal * * Revision 1.2 2000/11/28 17:27:19 reinelt * * changed decimal values for screen, row, column to ascii values (shame on you!) * * Revision 1.1 2000/11/28 16:46:11 reinelt * * first try to support display of SIN router * * */ /* * * exported fuctions: * * struct LCD SIN[] * */ #include <stdlib.h> #include <stdio.h> #include <ctype.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" // FIXME: 6x8 #define XRES 1 #define YRES 1 #define BARS ( BAR_L | BAR_R ) static LCD Lcd; static char *Port=NULL; static int Device=-1; static char Txt[8][40]; static int SIN_open (void) { int fd; pid_t pid; struct termios portset; if ((pid=lock_port(Port))!=0) { if (pid==-1) error ("SIN: port %s could not be locked", Port); else error ("SIN: port %s is locked by process %d", Port, pid); return -1; } fd = open(Port, O_RDWR | O_NOCTTY | O_NDELAY); if (fd==-1) { error ("SIN: open(%s) failed: %s", Port, strerror(errno)); unlock_port(Port); return -1; } if (tcgetattr(fd, &portset)==-1) { error ("SIN: tcgetattr(%s) failed: %s", Port, strerror(errno)); unlock_port(Port); return -1; } cfmakeraw(&portset); cfsetospeed(&portset, B9600); if (tcsetattr(fd, TCSANOW, &portset)==-1) { error ("SIN: tcsetattr(%s) failed: %s", Port, strerror(errno)); unlock_port(Port); return -1; } return fd; } static void SIN_debug (char *string, int len) { char buffer[256]; char *p, *c; p=buffer; c=string; while (len-->0) { if (isprint(*c)) { *p++=*c; } else { p+=sprintf(p, "\\%02x", *c); } c++; } *p='\0'; debug ("sending '%s'", buffer); } static void SIN_write (char *string, int len) { SIN_debug(string, len); if (Device==-1) return; if (write (Device, string, len)==-1) { if (errno==EAGAIN) { usleep(1000); if (write (Device, string, len)>=0) return; } error ("SIN: write(%s) failed: %s", Port, strerror(errno)); } } int SIN_clear (void) { int row, col; for (row=0; row<Lcd.rows; row++) { for (col=0; col<Lcd.cols; col++) { Txt[row][col]='\t'; } } SIN_write ("\033 ",2); return 0; } int SIN_init (LCD *Self) { char *port; Lcd=*Self; if (Port) { free (Port); Port=NULL; } port=cfg_get ("Port"); if (port==NULL || *port=='\0') { error ("SIN: no 'Port' entry in %s", cfg_file()); return -1; } Port=strdup(port); debug ("using port %s at 9600 baud", Port); Device=SIN_open(); if (Device==-1) return -1; SIN_write ("\015", 1); // send 'Enter' // Fixme: should we read the identifier here.... SIN_write ("\033S0", 3); // select screen #0 sleep (1); // FIXME: handshaking SIN_clear(); return 0; } int SIN_put (int row, int col, char *text) { char *p=&Txt[row][col]; char *t=text; while (*t && col++<=Lcd.cols) { *p++=*t++; } return 0; } int SIN_bar (int type, int row, int col, int max, int len, int dummy) { int rev=0; if (len<1) len=1; else if (len>max) len=max; switch (type) { case BAR_L: len=max-len; rev=1; case BAR_R: while (max>0 && col<=Lcd.cols) { if (len>=XRES) { Txt[row][col]=rev?0x19:0x18; len-=XRES; } else { Txt[row][col]=rev?0x18:0x19; len=0; } max-=XRES; col++; } break; } return 0; } int SIN_flush (void) { char buffer[256]="\015\033T"; // place text char *p; int row, col; for (row=0; row<Lcd.rows; row++) { buffer[3]='0'+row; for (col=0; col<Lcd.cols; col++) { if (Txt[row][col]=='\t') continue; sprintf (buffer+4, "%02x", col); for (p=buffer+6; col<Lcd.cols; col++, p++) { if (Txt[row][col]=='\t') break; *p=Txt[row][col]; } SIN_write (buffer, p-buffer); } } return 0; } int SIN_quit (void) { debug ("closing port %s", Port); close (Device); unlock_port(Port); return (0); } LCD SIN[] = { { "SIN",8,40,XRES,YRES,BARS,0,SIN_init,SIN_clear,SIN_put,SIN_bar,NULL,SIN_flush,SIN_quit }, { NULL } };


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