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 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