1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
#[cfg(feature = "chrono")]
use core::convert::From;
#[cfg(feature = "chrono")]
use chrono::{self, Datelike, NaiveDate, Timelike, Weekday};
use super::byte_to_bcd2;
use crate::pac::rtc::Rtc;
/// Errors regarding the [`DateTime`] struct.
#[derive(Clone, Debug, PartialEq, Eq)]
pub enum Error {
/// The [DateTime] contains an invalid year value. Must be between `0..=4095`.
InvalidYear,
/// The [DateTime] contains an invalid month value. Must be between `1..=12`.
InvalidMonth,
/// The [DateTime] contains an invalid day value. Must be between `1..=31`.
InvalidDay,
/// The [DateTime] contains an invalid day of week. Must be between `0..=6` where 0 is Sunday.
InvalidDayOfWeek(
/// The value of the DayOfWeek that was given.
u8,
),
/// The [DateTime] contains an invalid hour value. Must be between `0..=23`.
InvalidHour,
/// The [DateTime] contains an invalid minute value. Must be between `0..=59`.
InvalidMinute,
/// The [DateTime] contains an invalid second value. Must be between `0..=59`.
InvalidSecond,
}
/// Structure containing date and time information
pub struct DateTime {
/// 0..4095
pub year: u16,
/// 1..12, 1 is January
pub month: u8,
/// 1..28,29,30,31 depending on month
pub day: u8,
///
pub day_of_week: DayOfWeek,
/// 0..23
pub hour: u8,
/// 0..59
pub minute: u8,
/// 0..59
pub second: u8,
}
#[cfg(feature = "chrono")]
impl From<chrono::NaiveDateTime> for DateTime {
fn from(date_time: chrono::NaiveDateTime) -> Self {
Self {
year: date_time.year() as u16,
month: date_time.month() as u8,
day: date_time.day() as u8,
day_of_week: date_time.weekday().into(),
hour: date_time.hour() as u8,
minute: date_time.minute() as u8,
second: date_time.second() as u8,
}
}
}
#[cfg(feature = "chrono")]
impl From<DateTime> for chrono::NaiveDateTime {
fn from(date_time: DateTime) -> Self {
NaiveDate::from_ymd_opt(date_time.year as i32, date_time.month as u32, date_time.day as u32)
.unwrap()
.and_hms_opt(date_time.hour as u32, date_time.minute as u32, date_time.second as u32)
.unwrap()
}
}
/// A day of the week
#[repr(u8)]
#[derive(Copy, Clone, Debug, PartialEq, Eq, Ord, PartialOrd, Hash)]
#[allow(missing_docs)]
pub enum DayOfWeek {
Monday = 0,
Tuesday = 1,
Wednesday = 2,
Thursday = 3,
Friday = 4,
Saturday = 5,
Sunday = 6,
}
#[cfg(feature = "chrono")]
impl From<chrono::Weekday> for DayOfWeek {
fn from(weekday: Weekday) -> Self {
day_of_week_from_u8(weekday.number_from_monday() as u8).unwrap()
}
}
#[cfg(feature = "chrono")]
impl From<DayOfWeek> for chrono::Weekday {
fn from(weekday: DayOfWeek) -> Self {
match weekday {
DayOfWeek::Monday => Weekday::Mon,
DayOfWeek::Tuesday => Weekday::Tue,
DayOfWeek::Wednesday => Weekday::Wed,
DayOfWeek::Thursday => Weekday::Thu,
DayOfWeek::Friday => Weekday::Fri,
DayOfWeek::Saturday => Weekday::Sat,
DayOfWeek::Sunday => Weekday::Sun,
}
}
}
fn day_of_week_from_u8(v: u8) -> Result<DayOfWeek, Error> {
Ok(match v {
0 => DayOfWeek::Monday,
1 => DayOfWeek::Tuesday,
2 => DayOfWeek::Wednesday,
3 => DayOfWeek::Thursday,
4 => DayOfWeek::Friday,
5 => DayOfWeek::Saturday,
6 => DayOfWeek::Sunday,
x => return Err(Error::InvalidDayOfWeek(x)),
})
}
pub(super) fn day_of_week_to_u8(dotw: DayOfWeek) -> u8 {
dotw as u8
}
pub(super) fn validate_datetime(dt: &DateTime) -> Result<(), Error> {
if dt.year > 4095 {
Err(Error::InvalidYear)
} else if dt.month < 1 || dt.month > 12 {
Err(Error::InvalidMonth)
} else if dt.day < 1 || dt.day > 31 {
Err(Error::InvalidDay)
} else if dt.hour > 23 {
Err(Error::InvalidHour)
} else if dt.minute > 59 {
Err(Error::InvalidMinute)
} else if dt.second > 59 {
Err(Error::InvalidSecond)
} else {
Ok(())
}
}
pub(super) fn write_date_time(rtc: &Rtc, t: DateTime) {
let (ht, hu) = byte_to_bcd2(t.hour as u8);
let (mnt, mnu) = byte_to_bcd2(t.minute as u8);
let (st, su) = byte_to_bcd2(t.second as u8);
let (dt, du) = byte_to_bcd2(t.day as u8);
let (mt, mu) = byte_to_bcd2(t.month as u8);
let yr = t.year as u16;
let yr_offset = (yr - 1970_u16) as u8;
let (yt, yu) = byte_to_bcd2(yr_offset);
use crate::pac::rtc::vals::Ampm;
rtc.tr().write(|w| {
w.set_ht(ht);
w.set_hu(hu);
w.set_mnt(mnt);
w.set_mnu(mnu);
w.set_st(st);
w.set_su(su);
w.set_pm(Ampm::AM);
});
rtc.dr().write(|w| {
w.set_dt(dt);
w.set_du(du);
w.set_mt(mt > 0);
w.set_mu(mu);
w.set_yt(yt);
w.set_yu(yu);
w.set_wdu(day_of_week_to_u8(t.day_of_week));
});
}
pub(super) fn datetime(
year: u16,
month: u8,
day: u8,
day_of_week: u8,
hour: u8,
minute: u8,
second: u8,
) -> Result<DateTime, Error> {
let day_of_week = day_of_week_from_u8(day_of_week)?;
Ok(DateTime {
year,
month,
day,
day_of_week,
hour,
minute,
second,
})
}
|
