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