cmd_display.c 1.68 KB
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/*
 * (C) Copyright 2005
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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 of
 * the License, 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., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <command.h>
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#include <led-display.h>
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#undef DEBUG_DISP

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int do_display (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
	int i;

	/* Clear display */
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	display_set(DISPLAY_CLEAR | DISPLAY_HOME);
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	if (argc < 2)
		return (0);

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	for (i = 1; i < argc; i++) {
		char *p = argv[i];
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		if (i > 1) { /* Insert a space between strings */
			display_putc(' ');
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		}

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		while ((*p)) {
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#ifdef DEBUG_DISP
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			putc(*p);
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#endif
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			display_putc(*p++);
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		}
	}

#ifdef DEBUG_DISP
	putc('\n');
#endif

	return (0);
}

/***************************************************/

U_BOOT_CMD(
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	display,	CONFIG_SYS_MAXARGS,	1,	do_display,
Peter Tyser's avatar
Peter Tyser committed
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	"display string on dot matrix display",
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	"[<string>]\n"
	"    - with <string> argument: display <string> on dot matrix display\n"
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	"    - without arguments: clear dot matrix display"
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);