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/* $Id: display.c,v 1.4 2000/03/10 17:36:02 reinelt Exp $
*
* framework for device drivers
*
* Copyright 1999, 2000 by Michael Reinelt (reinelt@eunet.at)
*
* This program 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.
*
* This program 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: display.c,v $
* Revision 1.4 2000/03/10 17:36:02 reinelt
*
* first unstable but running release
*
* Revision 1.3 2000/03/10 10:49:53 reinelt
*
* MatrixOrbital driver finished
*
* Revision 1.2 2000/03/06 06:04:06 reinelt
*
* minor cleanups
*
*/
/*
* exported functions:
*
* lcd_init (char *display)
* initializes the named driver
*
* lcd_query (int *rows, int *cols, int *xres, int *yres, int *bars)
* queries the attributes of the selected driver
*
* lcd_clear ()
* clears the display
*
* int lcd_put (int row, int col, char *text)
* writes text at row, col
*
* int lcd_bar (int type, int row, int col, int max, int len1, int len2)
* draws a specified bar at row, col with len
*
* int lcd_flush (void)
* flushes the framebuffer to the display
*
*/
#include <stdlib.h>
#include <stdio.h>
#include "cfg.h"
#include "display.h"
extern DISPLAY MatrixOrbital[];
FAMILY Driver[] = {
{ "MatrixOrbital", MatrixOrbital },
{ "" }
};
static DISPLAY *Display = NULL;
int lcd_init (char *display)
{
int i, j;
for (i=0; Driver[i].name[0]; i++) {
for (j=0; Driver[i].Display[j].name[0]; j++) {
if (strcmp (Driver[i].Display[j].name, display)==0) {
Display=&Driver[i].Display[j];
return Display->init(Display);
}
}
}
fprintf (stderr, "lcd_init(%s) failed: no such display\n", display);
return -1;
}
int lcd_query (int *rows, int *cols, int *xres, int *yres, int *bars)
{
if (Display==NULL)
return -1;
*rows=Display->rows;
*cols=Display->cols;
*xres=Display->xres;
*yres=Display->yres;
*bars=Display->bars;
return 0;
}
int lcd_clear (void)
{
return Display->clear();
}
int lcd_put (int row, int col, char *text)
{
if (row<1 || row>Display->rows) return -1;
if (col<1 || col>Display->cols) return -1;
return Display->put(row-1, col-1, text);
}
int lcd_bar (int type, int row, int col, int max, int len1, int len2)
{
if (row<1 || row>Display->rows) return -1;
if (col<1 || col>Display->cols) return -1;
return Display->bar(type, row-1, col-1, max, len1, len2);
}
int lcd_flush (void)
{
return Display->flush();
}
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