LXR uboot/common/cmd

   1/*
   2 * (C) Copyright 2005
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8#include <common.h>
   9#include <command.h>
  10#include <led-display.h>
  11
  12#undef DEBUG_DISP
  13
  14int do_display (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  15{
  16        int i;
  17
  18        /* Clear display */
  19        display_set(DISPLAY_CLEAR | DISPLAY_HOME);
  20
  21        if (argc < 2)
  22                return (0);
  23
  24        for (i = 1; i < argc; i++) {
  25                char *p = argv[i];
  26
  27                if (i > 1) { /* Insert a space between strings */
  28                        display_putc(' ');
  29                }
  30
  31                while ((*p)) {
  32#ifdef DEBUG_DISP
  33                        putc(*p);
  34#endif
  35                        display_putc(*p++);
  36                }
  37        }
  38
  39#ifdef DEBUG_DISP
  40        putc('\n');
  41#endif
  42
  43        return (0);
  44}
  45
  46/***************************************************/
  47
  48U_BOOT_CMD(
  49        display,        CONFIG_SYS_MAXARGS,     1,      do_display,
  50        "display string on dot matrix display",
  51        "[<string>]\n"
  52        "    - with <string> argument: display <string> on dot matrix display\n"
  53        "    - without arguments: clear dot matrix display"
  54);
  55