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,
25 * RTC, Date & Time support: get and set date & time
31 #if (CONFIG_COMMANDS & CFG_CMD_DATE)
33 const char *weekdays[] = {
34 "Sun", "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur",
37 int mk_date (char *, struct rtc_time *);
39 int do_date (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
45 case 2: /* set date & time */
46 if (strcmp(argv[1],"reset") == 0) {
47 printf ("Reset RTC...\n");
50 /* initialize tm with current time */
52 /* insert new date & time */
53 if (mk_date (argv[1], &tm) != 0) {
54 printf ("## Bad date format\n");
57 /* and write to RTC */
61 case 1: /* get date & time */
64 printf ("Date: %4d-%02d-%02d (%sday) Time: %2d:%02d:%02d\n",
65 tm.tm_year, tm.tm_mon, tm.tm_mday,
66 (tm.tm_wday<0 || tm.tm_wday>6) ?
67 "unknown " : weekdays[tm.tm_wday],
68 tm.tm_hour, tm.tm_min, tm.tm_sec);
72 printf ("Usage:\n%s\n", cmdtp->usage);
79 * simple conversion of two-digit string with error checking
81 static int cnvrt2 (char *str, int *valp)
85 if ((*str < '0') || (*str > '9'))
92 if ((*str < '0') || (*str > '9'))
95 *valp = 10 * val + (*str - '0');
101 * Convert date string: MMDDhhmm[[CC]YY][.ss]
103 * Some basic checking for valid values is done, but this will not catch
104 * all possible error conditions.
106 int mk_date (char *datestr, struct rtc_time *tmp)
111 ptr = strchr (datestr,'.');
112 len = strlen (datestr);
119 if ((len - (ptr - datestr)) != 2)
122 len = strlen (datestr);
124 if (cnvrt2 (ptr, &sec))
132 if (len == 12) { /* MMDDhhmmCCYY */
135 if (cnvrt2 (datestr+ 8, ¢ury) ||
136 cnvrt2 (datestr+10, &year) ) {
139 tmp->tm_year = 100 * century + year;
140 } else if (len == 10) { /* MMDDhhmmYY */
143 century = tmp->tm_year / 100;
144 if (cnvrt2 (datestr+ 8, &year))
146 tmp->tm_year = 100 * century + year;
150 case 8: /* MMDDhhmm */
152 case 10: /* MMDDhhmmYY */
154 case 12: /* MMDDhhmmCCYY */
155 if (cnvrt2 (datestr+0, &val) ||
160 if (cnvrt2 (datestr+2, &val) ||
161 val > ((tmp->tm_mon==2) ? 29 : 31)) {
166 if (cnvrt2 (datestr+4, &val) ||
172 if (cnvrt2 (datestr+6, &val) ||
178 /* calculate day of week */
189 #endif /* CFG_CMD_DATE */