[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, 346 insertions, 0 deletions

diff --git a/drv_M50530.c b/drv_M50530.c
new file mode 100644
index 0000000..b33630e
--- /dev/null
+++ b/drv_M50530.c
@@ -0,0 +1,346 @@
+/* $Id: drv_M50530.c,v 1.1 2004/02/15 08:22:47 reinelt Exp $
+ *
+ * new style driver for M50530-based displays
+ *
+ * Copyright 1999-2004 Michael Reinelt <reinelt@eunet.at>
+ * Copyright 2004 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_M50530.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_M50530
+ *
+ */
+
+#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/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"
+#include "drv_generic_parport.h"
+
+static char Name[]="M50530";
+
+static int Model;
+static int Capabilities;
+
+static unsigned char SIGNAL_EX;
+static unsigned char SIGNAL_IOC1;
+static unsigned char SIGNAL_IOC2;
+static unsigned char SIGNAL_GPO;
+
+// Fixme
+static int GPOS;
+// static int GPO=0;
+
+
+typedef struct {
+  int type;
+  char *name;
+  int capabilities;
+} MODEL;
+
+static MODEL Models[] = {
+  { 0x01, "generic",  0 },
+  { 0xff, "Unknown",  0 }
+};
+
+
+// ****************************************
+// ***  hardware dependant functions    ***
+// ****************************************
+
+static void drv_M5_command (unsigned int cmd, int delay)
+{
+    
+  // put data on DB1..DB8
+  drv_generic_parport_data (cmd&0xff);
+    
+  // set I/OC1
+  // set I/OC2
+  drv_generic_parport_control (SIGNAL_IOC1|SIGNAL_IOC2, 
+			       (cmd&0x200?SIGNAL_IOC1:0) | 
+			       (cmd&0x100?SIGNAL_IOC2:0));
+  
+  // Control data setup time
+  ndelay(200);
+  
+  // send command
+  // EX signal pulse width = 500ns
+  // Fixme: why 500 ns? Datasheet says 200ns
+  drv_generic_parport_toggle (SIGNAL_EX, 1, 500);
+
+  // wait
+  udelay(delay);
+
+}
+
+
+static void drv_M5_write (unsigned char *string, int len)
+{
+  unsigned int cmd;
+
+  while (len--) {
+    cmd=*string++;
+    drv_M5_command (0x100|cmd, 20);
+  }
+}
+
+
+static void drv_M5_goto (int row, int col)
+{
+  int pos=row*48+col;
+  if (row>3) pos-=168;
+  drv_M5_command (0x300|pos, 20);
+}
+
+
+static void drv_M5_defchar (int ascii, unsigned char *buffer)
+{
+  drv_M5_command (0x300+192+8*(ascii-CHAR0), 20);
+  // Fixme: looks like the M50530 cannot control the bottom line
+  // therefore we have only 7 bytes here
+  drv_M5_write (buffer, 7);
+}
+
+
+// Fixme
+#if 0
+static void drv_M5_setGPO (int bits)
+{
+  if (Lcd.gpos>0) {
+
+    // put data on DB1..DB8
+    drv_generic_parport_data (bits);
+
+    // 74HCT573 set-up time
+    ndelay(20);
+    
+    // send data
+    // 74HCT573 enable pulse width = 24ns
+    drv_generic_parport_toggle (SIGNAL_GPO, 1, 24);
+  }
+}
+#endif
+
+
+static int drv_M5_start (char *section)
+{
+  char *model, *s;
+  int rows=-1, cols=-1, gpos=-1;
+  
+  model=cfg_get(section, "Model", "generic");
+  if (model!=NULL && *model!='\0') {
+    int i;
+    for (i=0; Models[i].type!=0xff; i++) {
+      if (strcasecmp(Models[i].name, model)==0) break;
+    }
+    if (Models[i].type==0xff) {
+      error ("%s: %s.Model '%s' is unknown from %s", Name, section, model, cfg_source());
+      return -1;
+    }
+    Model=i;
+    Capabilities=Models[Model].capabilities;
+    info ("%s: using model '%s'", Name, Models[Model].name);
+  } else {
+    error ("%s: empty '%s.Model' entry from %s", Name, section, cfg_source());
+    return -1;
+  }
+  
+  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;
+  }
+  
+  if (cfg_number(section, "GPOs", 0, 0, 8, &gpos)<0) return -1;
+  info ("%s: controlling %d GPO's", Name, gpos);
+
+  DROWS = rows;
+  DCOLS = cols;
+  GPOS  = gpos;
+  
+  if (drv_generic_parport_open(section, Name) != 0) {
+    error ("%s: could not initialize parallel port!", Name);
+    return -1;
+  }
+
+  if ((SIGNAL_EX   = drv_generic_parport_wire_ctrl ("EX",   "STROBE"))==0xff) return -1;
+  if ((SIGNAL_IOC1 = drv_generic_parport_wire_ctrl ("IOC1", "SELECT"))==0xff) return -1;
+  if ((SIGNAL_IOC2 = drv_generic_parport_wire_ctrl ("IOC2", "AUTOFD"))==0xff) return -1;
+  if ((SIGNAL_GPO  = drv_generic_parport_wire_ctrl ("GPO",  "INIT"  ))==0xff) return -1;
+
+  // clear all signals
+  drv_generic_parport_control (SIGNAL_EX|SIGNAL_IOC1|SIGNAL_IOC2|SIGNAL_GPO, 0);
+
+  // set direction: write
+  drv_generic_parport_direction (0);
+  
+  drv_M5_command (0x00FA, 20);   // set function mode
+  drv_M5_command (0x0020, 20);   // set display mode
+  drv_M5_command (0x0050, 20);   // set entry mode
+  drv_M5_command (0x0030, 20);   // set display mode
+  drv_M5_command (0x0001, 1250); // clear display
+  
+  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_M5_list (void)
+{
+  int i;
+  
+  for (i=0; Models[i].type!=0xff; i++) {
+    printf ("%s ", Models[i].name);
+  }
+  return 0;
+}
+
+
+// initialize driver & display
+int drv_M5_init (char *section)
+{
+  WIDGET_CLASS wc;
+  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 = 248;    // ASCII of first user-defineable char
+  GOTO_COST = 1;  // number of bytes a goto command requires
+  
+  // real worker functions
+  drv_generic_text_real_write   = drv_M5_write;
+  drv_generic_text_real_goto    = drv_M5_goto;
+  drv_generic_text_real_defchar = drv_M5_defchar;
+
+
+  // start display
+  if ((ret=drv_M5_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
+  drv_generic_text_bar_add_segment (0,0,255,32); // ASCII  32 = blank
+
+  // 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_M5_quit (void) {
+
+  info("%s: shutting down.", Name);
+  drv_generic_parport_close();
+  drv_generic_text_quit();
+  
+  return (0);
+}
+
+
+DRIVER drv_M50530 = {
+  name: Name,
+  list: drv_M5_list,
+  init: drv_M5_init,
+  quit: drv_M5_quit, 
+};
+
+