3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
30 #define CWORD_CLEAR 0x80
31 #define CLEAR_DELAY (110 * 2)
33 int do_display (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
39 *((volatile char*)(CONFIG_SYS_DISP_CWORD)) = CWORD_CLEAR;
40 udelay(1000 * CLEAR_DELAY);
45 for (pos = 0, i = 1; i < argc && pos < DISP_SIZE; i++) {
49 *((volatile uchar *) (CONFIG_SYS_DISP_CHR_RAM + pos++)) = ' ';
55 while ((c = *p++) != '\0' && pos < DISP_SIZE) {
56 *((volatile uchar *) (CONFIG_SYS_DISP_CHR_RAM + pos++)) = c;
70 /***************************************************/
73 display, CONFIG_SYS_MAXARGS, 1, do_display,
74 "display- display string on dot matrix display\n",
76 " - with <string> argument: display <string> on dot matrix display\n"
77 " - without arguments: clear dot matrix display\n"