[lcd4linux @ 2005-04-24 04:33:46 by reinelt]

driver for TREFON USB LCD's added

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@531 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

1 files changed, 378 insertions, 0 deletions

diff --git a/drv_Trefon.c b/drv_Trefon.c
new file mode 100644
index 0000000..f303509
--- /dev/null
+++ b/drv_Trefon.c
@@ -0,0 +1,378 @@
+/* $Id: drv_Trefon.c,v 1.1 2005/04/24 04:33:46 reinelt Exp $
+ *
+ * driver for TREFON USB LCD displays
+ *
+ * Copyright (C) 2005 Michael Reinelt <reinelt@eunet.at>
+ * Copyright (C) 2005 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
+ *
+ * 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_Trefon.c,v $
+ * Revision 1.1  2005/04/24 04:33:46  reinelt
+ * driver for TREFON USB LCD's added
+ *
+ */
+
+/* 
+ *
+ * exported fuctions:
+ *
+ * struct DRIVER drv_Trefon
+ *
+ */
+
+#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 <usb.h>
+
+#include "debug.h"
+#include "cfg.h"
+#include "qprintf.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 LCD_USB_VENDOR 0xfff0
+#define LCD_USB_DEVICE 0xfffe
+
+#define PKT_START 0x02
+#define PKT_DATA  0x02
+#define PKT_CTRL  0x06
+#define PKT_END   0xff
+
+static char Name[]="TREFON";
+
+static usb_dev_handle *lcd;
+static int interface;
+
+extern int usb_debug;
+extern int got_signal;
+
+
+/****************************************/
+/***  hardware dependant functions    ***/
+/****************************************/
+
+static int drv_TF_open (void)
+{
+  struct usb_bus *busses, *bus;
+  struct usb_device *dev;
+  
+  lcd = NULL;
+
+  info ("%s: scanning USB for TREFON LCD...", Name);
+
+  usb_debug = 0;
+  
+  usb_init();
+  usb_find_busses();
+  usb_find_devices();
+  busses = usb_get_busses();
+
+  for (bus = busses; bus; bus = bus->next) {
+    for (dev = bus->devices; dev; dev = dev->next) {
+      if ((dev->descriptor.idVendor == LCD_USB_VENDOR) &&
+	  (dev->descriptor.idProduct == LCD_USB_DEVICE)) {
+	info ("%s: found TREFON USB LCD on bus %s device %s", Name, bus->dirname, dev->filename);
+	lcd = usb_open(dev);
+	if (usb_set_configuration(lcd, 1) < 0) {
+	  error ("%s: usb_set_configuration() failed!", Name);
+	  return -1;
+	}
+	interface = 0;
+	if (usb_claim_interface(lcd, interface) < 0) {
+	  error ("%s: usb_claim_interface() failed!", Name);
+	  return -1;
+	}
+	return 0;
+      }
+    }
+  }
+  return -1;
+}
+
+
+static int drv_TF_close (void) 
+{
+  usb_release_interface(lcd, interface);
+  usb_close(lcd);
+
+  return 0;
+}
+
+
+static void drv_TF_send (char *data, int size)
+{
+  char buffer[64];
+
+  /* the controller always wants a 64-byte packet */
+  memset (buffer, 0, 64);
+  memcpy (buffer, data, size);
+
+  // Endpoint hardcoded to 2
+  usb_bulk_write(lcd, 2, buffer, 64, 2000);
+}
+
+
+static void drv_TF_command (const unsigned char cmd)
+{
+  char buffer[4] = { PKT_START, PKT_CTRL, 0, PKT_END };
+  buffer[2] = cmd;
+  drv_TF_send(buffer, 4);
+}
+
+
+static void drv_TF_clear (void)
+{
+  drv_TF_command (0x01);
+}
+
+
+static void drv_TF_write (const int row, const int col, const char *data, const int len)
+{
+  char buffer[64];
+  char *p;
+  int pos;
+  
+  /* 16x4 Displays use a slightly different layout */
+  if (DCOLS==16 && DROWS==4) {
+    pos = (row%2)*64+(row/2)*16+col;
+  } else {  
+    pos = (row%2)*64+(row/2)*20+col;
+  }
+  
+  /* I'd like to combine the GOTO and the data into one packet, 
+   * unfortunately the Trefon doesn't like it :-(
+   */
+  
+  drv_TF_command (0x80|pos);
+  
+  p = buffer;
+  *p++ = PKT_START;
+  *p++ = PKT_DATA;
+  *p++ = (char) len;
+  for (pos = 0; pos < len; pos++) {
+    *p++ = *data++;
+  }
+  *p++ = PKT_END;
+
+  drv_TF_send(buffer, len+3);
+}
+
+static void drv_TF_defchar (const int ascii, const unsigned char *matrix)
+{
+
+  char buffer[14] = "\002\006x\002x01234567\377";
+  char *p;
+  int i;
+  
+  p = buffer;
+  *p++ = PKT_START;
+  *p++ = PKT_CTRL;
+  *p++ = 0x40|8*ascii;
+  *p++ = PKT_DATA;
+  *p++ = 8; /* data length */
+  for (i = 0; i < 8; i++) {
+    *p++ = *matrix++ & 0x1f;
+  }
+  *p++ = PKT_END;
+
+  drv_TF_send(buffer, 14);
+}
+
+
+static int drv_TF_start (const char *section, const int quiet)
+{
+  int rows=-1, cols=-1;
+  char *s;
+
+  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 %s.Size '%s' from %s", Name, section, s, cfg_source());
+    free (s);
+    return -1;
+  }
+  
+  DROWS = rows;
+  DCOLS = cols;
+  
+  if (drv_TF_open() < 0) {
+    error ("%s: could not find a TREFON USB LCD", Name);
+    return -1;
+  }
+
+  drv_TF_clear();        /* clear display */
+  
+  if (!quiet) {
+    char buffer[40];
+    qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS);
+    if (drv_generic_text_greet (buffer, "www.trefon.de")) {
+      sleep (3);
+      drv_TF_clear();
+    }
+  }
+    
+  return 0;
+}
+
+
+/****************************************/
+/***            plugins               ***/
+/****************************************/
+
+/* none */
+
+
+/****************************************/
+/***        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_TF_list (void)
+{
+  printf ("generic");
+  return 0;
+}
+
+
+/* initialize driver & display */
+int drv_TF_init (const char *section, const int quiet)
+{
+  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 = 1;      /* ASCII of first user-defineable char */
+  GOTO_COST = 64; /* number of bytes a goto command requires */
+  
+  /* real worker functions */
+  drv_generic_text_real_write   = drv_TF_write;
+  drv_generic_text_real_defchar = drv_TF_defchar;
+
+
+  /* start display */
+  if ((ret=drv_TF_start (section, quiet))!=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))!=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 */
+
+  return 0;
+}
+
+
+/* close driver & display */
+int drv_TF_quit (const int quiet)
+{
+
+  info("%s: shutting down.", Name);
+  
+  drv_generic_text_quit();
+  
+  /* clear display */
+  drv_TF_clear();
+  
+  /* say goodbye... */
+  if (!quiet) {
+    drv_generic_text_greet ("goodbye!", NULL);
+  }
+  
+  debug ("closing USB connection");
+  drv_TF_close();
+  
+  return (0);
+}
+
+
+DRIVER drv_Trefon = {
+  name: Name,
+  list: drv_TF_list,
+  init: drv_TF_init,
+  quit: drv_TF_quit, 
+};
+