diff options
Diffstat (limited to 'cmd/display.c')
-rw-r--r-- | cmd/display.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/cmd/display.c b/cmd/display.c new file mode 100644 index 0000000..bc1b1eb --- /dev/null +++ b/cmd/display.c @@ -0,0 +1,54 @@ +/* + * (C) Copyright 2005 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <command.h> +#include <led-display.h> + +#undef DEBUG_DISP + +int do_display (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + int i; + + /* Clear display */ + display_set(DISPLAY_CLEAR | DISPLAY_HOME); + + if (argc < 2) + return (0); + + for (i = 1; i < argc; i++) { + char *p = argv[i]; + + if (i > 1) { /* Insert a space between strings */ + display_putc(' '); + } + + while ((*p)) { +#ifdef DEBUG_DISP + putc(*p); +#endif + display_putc(*p++); + } + } + +#ifdef DEBUG_DISP + putc('\n'); +#endif + + return (0); +} + +/***************************************************/ + +U_BOOT_CMD( + display, CONFIG_SYS_MAXARGS, 1, do_display, + "display string on dot matrix display", + "[<string>]\n" + " - with <string> argument: display <string> on dot matrix display\n" + " - without arguments: clear dot matrix display" +); |