LXR uboot/common/cmd

   1/*
   2 * (C) Copyright 2005
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24#include <common.h>
  25#include <command.h>
  26#include <led-display.h>
  27
  28#undef DEBUG_DISP
  29
  30int do_display (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  31{
  32        int i;
  33
  34        /* Clear display */
  35        display_set(DISPLAY_CLEAR | DISPLAY_HOME);
  36
  37        if (argc < 2)
  38                return (0);
  39
  40        for (i = 1; i < argc; i++) {
  41                char *p = argv[i];
  42
  43                if (i > 1) { /* Insert a space between strings */
  44                        display_putc(' ');
  45                }
  46
  47                while ((*p)) {
  48#ifdef DEBUG_DISP
  49                        putc(*p);
  50#endif
  51                        display_putc(*p++);
  52                }
  53        }
  54
  55#ifdef DEBUG_DISP
  56        putc('\n');
  57#endif
  58
  59        return (0);
  60}
  61
  62/***************************************************/
  63
  64U_BOOT_CMD(
  65        display,        CONFIG_SYS_MAXARGS,     1,      do_display,
  66        "display string on dot matrix display",
  67        "[<string>]\n"
  68        "    - with <string> argument: display <string> on dot matrix display\n"
  69        "    - without arguments: clear dot matrix display"
  70);
  71