1 #pragma once
2 #include "stream.hpp"
3 
4 #include <chrono>
5 
6 namespace openpower
7 {
8 namespace pels
9 {
10 
11 /**
12  * @brief A structure that contains a PEL timestamp in BCD.
13  */
14 struct BCDTime
15 {
16     uint8_t yearMSB;
17     uint8_t yearLSB;
18     uint8_t month;
19     uint8_t day;
20     uint8_t hour;
21     uint8_t minutes;
22     uint8_t seconds;
23     uint8_t hundredths;
24 
25     BCDTime() :
26         yearMSB(0), yearLSB(0), month(0), day(0), hour(0), minutes(0),
27         seconds(0), hundredths(0)
28     {}
29 
30     BCDTime(uint8_t yearMSB, uint8_t yearLSB, uint8_t month, uint8_t day,
31             uint8_t hour, uint8_t minutes, uint8_t seconds,
32             uint8_t hundredths) :
33         yearMSB(yearMSB),
34         yearLSB(yearLSB), month(month), day(day), hour(hour), minutes(minutes),
35         seconds(seconds), hundredths(hundredths)
36     {}
37 
38     bool operator==(const BCDTime& right) const;
39     bool operator!=(const BCDTime& right) const;
40 
41 } __attribute__((packed));
42 
43 /**
44  * @brief Converts a time_point into a BCD time
45  *
46  * @param[in] time - the time_point to convert
47  * @return BCDTime - the BCD time
48  */
49 BCDTime getBCDTime(std::chrono::time_point<std::chrono::system_clock>& time);
50 
51 /**
52  * @brief Converts the number of milliseconds since the epoch into BCD time
53  *
54  * @param[in] milliseconds - Number of milliseconds since the epoch
55  * @return BCDTime - the BCD time
56  */
57 BCDTime getBCDTime(uint64_t milliseconds);
58 
59 /**
60  * @brief Converts a number to a BCD.
61  *
62  * For example 32 -> 0x32.
63  *
64  * Source: PLDM repository
65  *
66  * @param[in] value - the value to convert.
67  *
68  * @return T - the BCD value
69  */
70 template <typename T>
71 T toBCD(T decimal)
72 {
73     T bcd = 0;
74     T remainder = 0;
75     auto count = 0;
76 
77     while (decimal)
78     {
79         remainder = decimal % 10;
80         bcd = bcd + (remainder << count);
81         decimal = decimal / 10;
82         count += 4;
83     }
84 
85     return bcd;
86 }
87 
88 /**
89  * @brief Stream extraction operator for BCDTime
90  *
91  * @param[in] s - the Stream
92  * @param[out] time - the BCD time
93  *
94  * @return Stream&
95  */
96 Stream& operator>>(Stream& s, BCDTime& time);
97 
98 /**
99  * @brief Stream insertion operator for BCDTime
100  *
101  * @param[in/out] s - the Stream
102  * @param[in] time - the BCD time
103  *
104  * @return Stream&
105  */
106 Stream& operator<<(Stream& s, const BCDTime& time);
107 
108 } // namespace pels
109 } // namespace openpower
110