1 /*
2 * Copyright (c) 2006-2018, RT-Thread Development Team
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Change Logs:
7 * Date Author Notes
8 * 2018-05-06 sundm75 first version
9 */
10 #include "ls1c.h"
11 #include "ls1c_public.h"
12 #include "ls1c_rtc.h"
13
14 #define LS1C_SEC_OFFSET (4)
15 #define LS1C_MIN_OFFSET (10)
16 #define LS1C_HOUR_OFFSET (16)
17 #define LS1C_DAY_OFFSET (21)
18 #define LS1C_MONTH_OFFSET (26)
19
20 #define LS1C_SEC_MASK (0x3f)
21 #define LS1C_MIN_MASK (0x3f)
22 #define LS1C_HOUR_MASK (0x1f)
23 #define LS1C_DAY_MASK (0x1f)
24 #define LS1C_MONTH_MASK (0x3f)
25 #define LS1C_YEAR_MASK (0xff)
26
27 #define ls1c_get_sec(t) (((t) >> LS1C_SEC_OFFSET) & LS1C_SEC_MASK)
28 #define ls1c_get_min(t) (((t) >> LS1C_MIN_OFFSET) & LS1C_MIN_MASK)
29 #define ls1c_get_hour(t) (((t) >> LS1C_HOUR_OFFSET) & LS1C_HOUR_MASK)
30 #define ls1c_get_day(t) (((t) >> LS1C_DAY_OFFSET) & LS1C_DAY_MASK)
31 #define ls1c_get_month(t) (((t) >> LS1C_MONTH_OFFSET) & LS1C_MONTH_MASK)
32
RTC_SetTime(RTC_TypeDef * hrtc,RTC_TimeTypeDef * sTime)33 int RTC_SetTime(RTC_TypeDef *hrtc, RTC_TimeTypeDef *sTime)
34 {
35
36 hrtc->SYS_TOYWRITE0
37 = (sTime->Month << LS1C_MONTH_OFFSET)
38 | (sTime->Date << LS1C_DAY_OFFSET)
39 | (sTime->Hours << LS1C_HOUR_OFFSET)
40 | (sTime->Minutes << LS1C_MIN_OFFSET)
41 | (sTime->Seconds << LS1C_SEC_OFFSET);
42 hrtc->SYS_TOYWRITE1 = sTime->Year % 100;
43 printf("\r\ntoy_read0 = 0x%x, toy_read1 = 0x%x.\r\n", hrtc->SYS_TOYREAD0, hrtc->SYS_TOYREAD1);
44
45 return 0;
46 }
47
RTC_GetTime(RTC_TypeDef * hrtc,RTC_TimeTypeDef * sTime)48 int RTC_GetTime(RTC_TypeDef *hrtc, RTC_TimeTypeDef *sTime)
49 {
50 unsigned long toy_read0, toy_read1;
51 toy_read0 = hrtc->SYS_TOYREAD0;
52 toy_read1 = hrtc->SYS_TOYREAD1;
53 sTime->Seconds = ls1c_get_sec(toy_read0);
54 sTime->Minutes = ls1c_get_min(toy_read0);
55 sTime->Hours = ls1c_get_hour(toy_read0);
56 sTime->Date = ls1c_get_day(toy_read0);
57 sTime->Month = ls1c_get_month(toy_read0);
58 sTime->Year = toy_read1 & LS1C_YEAR_MASK;
59 return 0 ;
60 }
61
RTC_IsLeapYear(unsigned int nYear)62 unsigned char RTC_IsLeapYear(unsigned int nYear)
63 {
64 if((nYear % 4U) != 0U)
65 {
66 return 0U;
67 }
68
69 if((nYear % 100U) != 0U)
70 {
71 return 1U;
72 }
73
74 if((nYear % 400U) == 0U)
75 {
76 return 1U;
77 }
78 else
79 {
80 return 0U;
81 }
82 }
83
RTC_WeekDayNum(unsigned long nYear,unsigned char nMonth,unsigned char nDay)84 unsigned char RTC_WeekDayNum(unsigned long nYear, unsigned char nMonth, unsigned char nDay)
85 {
86 unsigned long year = 0U, weekday = 0U;
87
88 year = 2000U + nYear;
89
90 if(nMonth < 3U)
91 {
92 /*D = { [(23 x month)/9] + day + 4 + year + [(year-1)/4] - [(year-1)/100] + [(year-1)/400] } mod 7*/
93 weekday = (((23U * nMonth)/9U) + nDay + 4U + year + ((year-1U)/4U) - ((year-1U)/100U) + ((year-1U)/400U)) % 7U;
94 }
95 else
96 {
97 /*D = { [(23 x month)/9] + day + 4 + year + [year/4] - [year/100] + [year/400] - 2 } mod 7*/
98 weekday = (((23U * nMonth)/9U) + nDay + 4U + year + (year/4U) - (year/100U) + (year/400U) - 2U ) % 7U;
99 }
100
101 return (unsigned char)weekday;
102 }
103