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Commit | Line | Data |
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61b0cfe9 L |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | /* | |
9 | * RTC, Date & Time support: get and set date & time | |
10 | */ | |
e63b2f75 | 11 | #include "common.h" |
61b0cfe9 | 12 | #include <string.h> |
e63b2f75 L |
13 | #include "time.h" |
14 | #include "rtc.h" | |
15 | #include "command.h" | |
61b0cfe9 L |
16 | |
17 | ||
61b0cfe9 L |
18 | /* |
19 | * simple conversion of two-digit string with error checking | |
20 | */ | |
21 | static int cnvrt2 (const char *str, int *valp) | |
22 | { | |
23 | int val; | |
24 | ||
25 | if ((*str < '0') || (*str > '9')) | |
26 | return (-1); | |
27 | ||
28 | val = *str - '0'; | |
29 | ||
30 | ++str; | |
31 | ||
32 | if ((*str < '0') || (*str > '9')) | |
33 | return (-1); | |
34 | ||
35 | *valp = 10 * val + (*str - '0'); | |
36 | ||
37 | return (0); | |
38 | } | |
39 | ||
40 | /* | |
41 | * Convert date string: MMDDhhmm[[CC]YY][.ss] | |
42 | * | |
43 | * Some basic checking for valid values is done, but this will not catch | |
44 | * all possible error conditions. | |
45 | */ | |
e63b2f75 | 46 | int mk_date (const char *datestr, struct tm *tmp) |
61b0cfe9 L |
47 | { |
48 | int len, val; | |
49 | char *ptr; | |
50 | ||
51 | ptr = strchr (datestr,'.'); | |
52 | len = strlen (datestr); | |
53 | ||
54 | /* Set seconds */ | |
55 | if (ptr) { | |
56 | int sec; | |
57 | ||
58 | *ptr++ = '\0'; | |
59 | if ((len - (ptr - datestr)) != 2) | |
60 | return (-1); | |
61 | ||
62 | len = strlen (datestr); | |
63 | ||
64 | if (cnvrt2 (ptr, &sec)) | |
65 | return (-1); | |
66 | ||
67 | tmp->tm_sec = sec; | |
68 | } else { | |
69 | tmp->tm_sec = 0; | |
70 | } | |
71 | ||
e63b2f75 | 72 | if (len == 12) { /* MMDDhhmmCCYY */ |
61b0cfe9 L |
73 | int year, century; |
74 | ||
75 | if (cnvrt2 (datestr+ 8, ¢ury) || | |
76 | cnvrt2 (datestr+10, &year) ) { | |
77 | return (-1); | |
78 | } | |
e63b2f75 | 79 | tmp->tm_year = 100 * century + year - 1900; |
61b0cfe9 L |
80 | } else if (len == 10) { /* MMDDhhmmYY */ |
81 | int year, century; | |
82 | ||
e63b2f75 | 83 | century = (tmp->tm_year + 1900) / 100; |
61b0cfe9 L |
84 | if (cnvrt2 (datestr+ 8, &year)) |
85 | return (-1); | |
e63b2f75 | 86 | tmp->tm_year = 100 * century + year -1900; |
61b0cfe9 L |
87 | } |
88 | ||
89 | switch (len) { | |
e63b2f75 | 90 | case 8: /* MMDDhhmm */ |
61b0cfe9 | 91 | /* fall thru */ |
e63b2f75 | 92 | case 10: /* MMDDhhmmYY */ |
61b0cfe9 | 93 | /* fall thru */ |
e63b2f75 | 94 | case 12: /* MMDDhhmmCCYY */ |
61b0cfe9 L |
95 | if (cnvrt2 (datestr+0, &val) || |
96 | val > 12) { | |
97 | break; | |
98 | } | |
e63b2f75 | 99 | tmp->tm_mon = val - 1; |
61b0cfe9 | 100 | if (cnvrt2 (datestr+2, &val) || |
e63b2f75 | 101 | val > ((tmp->tm_mon==2-1) ? 29 : 31)) { |
61b0cfe9 L |
102 | break; |
103 | } | |
104 | tmp->tm_mday = val; | |
105 | ||
106 | if (cnvrt2 (datestr+4, &val) || | |
107 | val > 23) { | |
108 | break; | |
109 | } | |
110 | tmp->tm_hour = val; | |
111 | ||
112 | if (cnvrt2 (datestr+6, &val) || | |
113 | val > 59) { | |
114 | break; | |
115 | } | |
116 | tmp->tm_min = val; | |
117 | ||
61b0cfe9 L |
118 | return (0); |
119 | default: | |
120 | break; | |
121 | } | |
122 | ||
123 | return (-1); | |
124 | } | |
e63b2f75 L |
125 | |
126 | command_ret_t do_date(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
127 | { | |
128 | struct tm t; | |
129 | char buf[30]; | |
130 | int rcode = CMD_RET_SUCCESS; | |
131 | ||
132 | (void) cmdtp; (void) flag; | |
133 | ||
134 | switch (argc) { | |
135 | case 2: /* set date & time */ | |
136 | /* initialize t with current time */ | |
137 | rcode = rtc_get (&t); | |
138 | ||
139 | if(!rcode) { | |
140 | /* insert new date & time */ | |
141 | if (mk_date (argv[1], &t) != 0) { | |
142 | my_puts_P(PSTR("## Bad date format\n")); | |
143 | break; | |
144 | } | |
145 | ||
146 | time_t time; | |
147 | time = mk_gmtime(&t); | |
148 | gmtime_r(&time, &t); | |
149 | ||
150 | /* and write to RTC */ | |
151 | rcode = rtc_set (&t); | |
152 | if(rcode) | |
153 | my_puts_P(PSTR("## Set date failed\n")); | |
154 | } else { | |
155 | my_puts_P(PSTR("## Get date failed\n")); | |
156 | } | |
157 | /* FALL TROUGH */ | |
158 | case 1: /* get date & time */ | |
159 | rcode = rtc_get (&t); | |
160 | ||
161 | if (rcode) { | |
162 | my_puts_P(PSTR("## Get date failed\n")); | |
163 | break; | |
164 | } | |
165 | asctime_r(&t, buf); | |
166 | printf_P(PSTR("%s\n"), buf); | |
167 | break; | |
168 | ||
169 | default: | |
170 | rcode = CMD_RET_USAGE; | |
171 | } | |
172 | ||
173 | return rcode; | |
174 | } |