[lcd4linux @ 2004-01-20 14:35:38 by reinelt]

drv_generic_parport added, code from parport.c

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@326 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

1 files changed, 87 insertions, 0 deletions

diff --git a/drv_generic_parport.h b/drv_generic_parport.h
new file mode 100644
index 0000000..6decaa7
--- /dev/null
+++ b/drv_generic_parport.h
@@ -0,0 +1,87 @@
+/* $Id: drv_generic_parport.h,v 1.1 2004/01/20 14:35:38 reinelt Exp $
+ *
+ * generic driver helper for parallel port displays
+ *
+ * Copyright 1999, 2000 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_generic_parport.h,v $
+ * Revision 1.1  2004/01/20 14:35:38  reinelt
+ * drv_generic_parport added, code from parport.c
+ *
+ */
+
+/* 
+ *
+ * exported fuctions:
+ *
+ * int drv_generic_parport_open (void)
+ *   reads 'Port' entry from config and opens
+ *   the parallel port
+ *   returns 0 if ok, -1 on failure
+ *
+ * int drv_generic_parport_close (void)
+ *   closes parallel port
+ *   returns 0 if ok, -1 on failure
+ *
+ * unsigned char drv_generic_parport_wire_ctrl (char *name, char *deflt)
+ *   reads wiring for one control signal from config
+ *   returns DRV_GENERIC_PARPORT_CONTROL_* or 255 on error
+ *
+ * unsigned char drv_generic_parport_wire_data (char *name, char *deflt)
+ *   reads wiring for one data signal from config
+ *   returns 1<<bitpos or 255 on error
+ *
+ * void drv_generic_parport_direction (int direction)
+ *   0 - write to parport
+ *   1 - read from parport
+ *
+ * void drv_generic_parport_control (unsigned char mask, unsigned char value)
+ *   frobs control line and takes care of inverted signals
+ *
+ * void drv_generic_parport_toggle (unsigned char bit, int level, int delay)
+ *   toggles the line <bit> to <level> for <delay> nanoseconds
+ *
+ * void drv_generic_parport_data (unsigned char value)
+ *   put data bits on DB1..DB8
+ *
+ * unsigned char drv_generic_parport_read (void)
+ *   reads a byte from the parallel port
+ *
+ * void drv_generic_parport_debug(void)
+ *   prints status of control lines
+ *
+ */
+
+#ifndef _DRV_GENERIC_PARPORT_H_
+#define _DRV_GENERIC_PARPORT_H_
+
+int           drv_generic_parport_open       (void);
+int           drv_generic_parport_close      (void);
+unsigned char drv_generic_parport_wire_ctrl  (char *name, unsigned char *deflt);
+unsigned char drv_generic_parport_wire_data  (char *name, unsigned char *deflt);
+void          drv_generic_parport_direction  (int direction);
+void          drv_generic_parport_control    (unsigned char mask, unsigned char value);
+void          drv_generic_parport_toggle     (unsigned char bit, int level, int delay);
+void          drv_generic_parport_data       (unsigned char data);
+unsigned char drv_generic_parport_read       (void);
+void          drv_generic_parport_debug      (void);
+
+#endif