[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

1 files changed, 369 insertions, 0 deletions

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 <reinelt@eunet.at>
+ * Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
+ *
+ * based on the old-style USBLCD driver which is 
+ * Copyright 2002 Robin Adams, Adams IT Services <info@usblcd.de>
+ *
+ * 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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+
+#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, 
+};
+
+