From 0dc4d2093be753affc50d1ccb70fb9f5f66ed9b8 Mon Sep 17 00:00:00 2001 From: reinelt Date: Sun, 15 Feb 2004 08:22:47 +0000 Subject: [lcd4linux @ 2004-02-15 08:22:47 by reinelt] ported USBLCD driver to NextGeneration added drv_M50530.c (I forgot yesterday, sorry) removed old drivers M50530.c and USBLCD.c git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@366 3ae390bd-cb1e-0410-b409-cd5a39f66f1f --- drv_USBLCD.c | 369 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 369 insertions(+) create mode 100644 drv_USBLCD.c (limited to 'drv_USBLCD.c') diff --git a/drv_USBLCD.c b/drv_USBLCD.c new file mode 100644 index 0000000..2522388 --- /dev/null +++ b/drv_USBLCD.c @@ -0,0 +1,369 @@ +/* $Id: drv_USBLCD.c,v 1.1 2004/02/15 08:22:47 reinelt Exp $ + * + * new style driver for USBLCD displays + * + * Copyright 1999-2004 Michael Reinelt + * Copyright 2004 The LCD4Linux Team + * + * based on the old-style USBLCD driver which is + * Copyright 2002 Robin Adams, Adams IT Services + * + * 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: drv_USBLCD.c,v $ + * Revision 1.1 2004/02/15 08:22:47 reinelt + * ported USBLCD driver to NextGeneration + * added drv_M50530.c (I forgot yesterday, sorry) + * removed old drivers M50530.c and USBLCD.c + * + */ + +/* + * + * exported fuctions: + * + * struct DRIVER drv_USBLCD + * + */ + +#include "config.h" + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "debug.h" +#include "cfg.h" +#include "udelay.h" +#include "plugin.h" +#include "widget.h" +#include "widget_text.h" +#include "widget_icon.h" +#include "widget_bar.h" +#include "drv.h" +#include "drv_generic_text.h" + + +#define IOC_GET_HARD_VERSION 1 +#define IOC_GET_DRV_VERSION 2 + + +static char Name[]="USBLCD"; + +static char *Port=NULL; +static int usblcd_file; +static unsigned char *Buffer; +static unsigned char *BufPtr; + + +// **************************************** +// *** hardware dependant functions *** +// **************************************** + +static void drv_UL_send () +{ + +#if 0 + struct timeval now, end; + gettimeofday (&now, NULL); +#endif + + write(usblcd_file,Buffer,BufPtr-Buffer); + +#if 0 + gettimeofday (&end, NULL); + debug ("send %d bytes in %d msec (%d usec/byte)", BufPtr-Buffer, + (1000000*(end.tv_sec-now.tv_sec)+end.tv_usec-now.tv_usec)/1000, + (1000000*(end.tv_sec-now.tv_sec)+end.tv_usec-now.tv_usec)/(BufPtr-Buffer)); +#endif + + BufPtr=Buffer; +} + + +static void drv_UL_command (unsigned char cmd) +{ + *BufPtr++='\0'; + *BufPtr++=cmd; +} + + +static void drv_UL_write (unsigned char *string, int len) +{ + while (len--) { + if(*string==0) *BufPtr++=*string; + *BufPtr++=*string++; + } + drv_UL_send(); +} + + +static void drv_UL_goto (int row, int col) +{ + int pos=(row%2)*64+(row/2)*20+col; + drv_UL_command (0x80|pos); +} + + +static void drv_UL_defchar (int ascii, unsigned char *buffer) +{ + drv_UL_command (0x40|8*ascii); + drv_UL_write (buffer, 8); + // drv_UL_write() will call drv_UL_send(), so don't call it here! +} + + +static int drv_UL_start (char *section) +{ + int rows=-1, cols=-1; + int major, minor; + char *port, *s; + char buf[128]; + + if (Port) { + free(Port); + Port=NULL; + } + if ((port=cfg_get(section, "Port", NULL))==NULL || *port=='\0') { + error ("%s: no '%s.Port' entry from %s", Name, section, cfg_source()); + return -1; + } + if (port[0]=='/') { + Port=strdup(port); + } else { + Port=malloc(5+strlen(port)+1); + sprintf(Port,"/dev/%s",port); + } + + debug ("using device %s ", Port); + + s=cfg_get(section, "Size", NULL); + if (s==NULL || *s=='\0') { + error ("%s: no '%s.Size' entry from %s", Name, section, cfg_source()); + return -1; + } + if (sscanf(s,"%dx%d",&cols,&rows)!=2 || rows<1 || cols<1) { + error ("%s: bad size '%s'", Name, s); + return -1; + } + + DROWS = rows; + DCOLS = cols; + + // Init the command buffer + Buffer = (char*)malloc(1024); + if (Buffer==NULL) { + error ("%s: coommand buffer could not be allocated: malloc() failed", Name); + return -1; + } + + // open port + usblcd_file=open(Port,O_WRONLY); + if (usblcd_file==-1) { + error ("%s: open(%s) failed: %s", Name, Port, strerror(errno)); + return -1; + } + + // get driver version + memset(buf,0,sizeof(buf)); + if (ioctl(usblcd_file, IOC_GET_DRV_VERSION, buf)!=0) { + error ("USBLCD: ioctl() failed, could not get Driver Version!"); + return -1; + } + info("%s: Driver Version: %s", Name, buf); + + if (sscanf(buf,"USBLCD Driver Version %d.%d",&major,&minor)!=2) { + error("%s: could not read Driver Version!", Name); + return -1; + } + if (major!=1) { + error("%d: Driver Version %d not supported!", Name, major); + return -1; + } + + memset(buf,0,sizeof(buf)); + if (ioctl(usblcd_file, IOC_GET_HARD_VERSION, buf)!=0) { + error ("%s: ioctl() failed, could not get Hardware Version!", Name); + return -1; + } + info("%s: Hardware Version: %s", Name, buf); + + if (sscanf(buf,"%d.%d",&major,&minor)!=2) { + error("%s: could not read Hardware Version!", Name); + return -1; + } + + if (major!=1) { + error("%s: Hardware Version %d not supported!", Name, major); + return -1; + } + + // reset coimmand buffer + BufPtr=Buffer; + + // initialize display + drv_UL_command (0x29); // 8 Bit mode, 1/16 duty cycle, 5x8 font + drv_UL_command (0x08); // Display off, cursor off, blink off + drv_UL_command (0x0c); // Display on, cursor off, blink off + drv_UL_command (0x06); // curser moves to right, no shift + drv_UL_command (0x01); // clear display + drv_UL_command (0x03); // return home + + // flush buffer + drv_UL_send(); + + return 0; +} + + +// **************************************** +// *** plugins *** +// **************************************** + +// none at the moment... + + +// **************************************** +// *** widget callbacks *** +// **************************************** + + +// using drv_generic_text_draw(W) +// using drv_generic_text_icon_draw(W) +// using drv_generic_text_bar_draw(W) + + +// **************************************** +// *** exported functions *** +// **************************************** + + +// list models +int drv_UL_list (void) +{ + printf ("generic"); + return 0; +} + + +// initialize driver & display +int drv_UL_init (char *section) +{ + WIDGET_CLASS wc; + int asc255bug; + int ret; + + // display preferences + XRES = 5; // pixel width of one char + YRES = 8; // pixel height of one char + CHARS = 8; // number of user-defineable characters + CHAR0 = 0; // ASCII of first user-defineable char + GOTO_COST = 2; // number of bytes a goto command requires + + // real worker functions + drv_generic_text_real_write = drv_UL_write; + drv_generic_text_real_goto = drv_UL_goto; + drv_generic_text_real_defchar = drv_UL_defchar; + + + // start display + if ((ret=drv_UL_start (section))!=0) + return ret; + + // initialize generic text driver + if ((ret=drv_generic_text_init(section, Name))!=0) + return ret; + + // initialize generic icon driver + if ((ret=drv_generic_text_icon_init())!=0) + return ret; + + // initialize generic bar driver + if ((ret=drv_generic_text_bar_init())!=0) + return ret; + + // add fixed chars to the bar driver + // most displays have a full block on ascii 255, but some have kind of + // an 'inverted P'. If you specify 'asc255bug 1 in the config, this + // char will not be used, but rendered by the bar driver + cfg_number(section, "asc255bug", 0, 0, 1, &asc255bug); + drv_generic_text_bar_add_segment ( 0, 0,255, 32); // ASCII 32 = blank + if (!asc255bug) + drv_generic_text_bar_add_segment (255,255,255,255); // ASCII 255 = block + + // register text widget + wc=Widget_Text; + wc.draw=drv_generic_text_draw; + widget_register(&wc); + + // register icon widget + wc=Widget_Icon; + wc.draw=drv_generic_text_icon_draw; + widget_register(&wc); + + // register bar widget + wc=Widget_Bar; + wc.draw=drv_generic_text_bar_draw; + widget_register(&wc); + + // register plugins + // none at the moment... + + + return 0; +} + + +// close driver & display +int drv_UL_quit (void) +{ + + info("%s: shutting down.", Name); + + // flush buffer + drv_UL_send(); + + debug ("closing port %s", Port); + close(usblcd_file); + + if (Buffer) { + free(Buffer); + Buffer=NULL; + BufPtr=Buffer; + } + + drv_generic_text_quit(); + + return (0); +} + + +DRIVER drv_USBLCD = { + name: Name, + list: drv_UL_list, + init: drv_UL_init, + quit: drv_UL_quit, +}; + + -- cgit v1.2.3