projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 9f96ae44 WD |
1 | /* |
| 2 | * (C) Copyright 2005 | |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
| 4 | * | |
| 5 | * See file CREDITS for list of people who contributed to this | |
| 6 | * project. | |
| 7 | * | |
| 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. | |
| 12 | * | |
| 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. | |
| 17 | * | |
| 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, | |
| 21 | * MA 02111-1307 USA | |
| 22 | */ | |
| 23 | ||
| 24 | #include <common.h> | |
| 25 | #include <command.h> | |
| 26 | ||
| 27 | #if (CONFIG_COMMANDS & CFG_CMD_DISPLAY) | |
| 28 | ||
| 29 | #undef DEBUG_DISP | |
| 30 | ||
| 31 | #define DISP_SIZE 8 | |
| 32 | #define CWORD_CLEAR 0x80 | |
| 33 | #define CLEAR_DELAY (110 * 2) | |
| 34 | ||
| 35 | int do_display (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
| 36 | { | |
| 37 | int i; | |
| 38 | int pos; | |
| 39 | ||
| 40 | /* Clear display */ | |
| 41 | *((volatile char*)(CFG_DISP_CWORD)) = CWORD_CLEAR; | |
| 42 | udelay(1000 * CLEAR_DELAY); | |
| 43 | ||
| 44 | if (argc < 2) | |
| 45 | return (0); | |
| 46 | ||
| 47 | for (pos = 0, i = 1; i < argc && pos < DISP_SIZE; i++) { | |
| 48 | char *p = argv[i], c; | |
| 49 | ||
| 50 | if (i > 1) { | |
| 51 | *((volatile uchar *) (CFG_DISP_CHR_RAM + pos++)) = ' '; | |
| 52 | #ifdef DEBUG_DISP | |
| 53 | putc(' '); | |
| 54 | #endif | |
| 55 | } | |
| 56 | ||
| 57 | while ((c = *p++) != '\0' && pos < DISP_SIZE) { | |
| 58 | *((volatile uchar *) (CFG_DISP_CHR_RAM + pos++)) = c; | |
| 59 | #ifdef DEBUG_DISP | |
| 60 | putc(c); | |
| 61 | #endif | |
| 62 | } | |
| 63 | } | |
| 64 | ||
| 65 | #ifdef DEBUG_DISP | |
| 66 | putc('\n'); | |
| 67 | #endif | |
| 68 | ||
| 69 | return (0); | |
| 70 | } | |
| 71 | ||
| 72 | /***************************************************/ | |
| 73 | ||
| 74 | U_BOOT_CMD( | |
| 75 | display, CFG_MAXARGS, 1, do_display, | |
| 76 | "display- display string on dot matrix display\n", | |
| 77 | "[<string>]\n" | |
| 78 | " - with <string> argument: display <string> on dot matrix display\n" | |
| 79 | " - without arguments: clear dot matrix display\n" | |
| 80 | ); | |
| 81 | ||
| 82 | #endif /* CFG_CMD_DISPLAY */ |