63 lines
1.9 KiB
Rust
63 lines
1.9 KiB
Rust
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use chrono::{Datelike, Timelike};
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use crate::pac::rtc::regs::{Rtc0, Rtc1, Setup0, Setup1};
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/// Alias for [`chrono::NaiveDateTime`]
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pub type DateTime = chrono::NaiveDateTime;
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/// Alias for [`chrono::Weekday`]
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pub type DayOfWeek = chrono::Weekday;
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/// Errors regarding the [`DateTime`] and [`DateTimeFilter`] structs.
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///
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/// [`DateTimeFilter`]: struct.DateTimeFilter.html
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#[derive(Clone, Debug, PartialEq, Eq)]
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pub enum Error {
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/// The [DateTime] has an invalid year. The year must be between 0 and 4095.
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InvalidYear,
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/// The [DateTime] contains an invalid date.
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InvalidDate,
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/// The [DateTime] contains an invalid time.
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InvalidTime,
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}
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pub(super) fn day_of_week_to_u8(dotw: DayOfWeek) -> u8 {
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dotw.num_days_from_sunday() as u8
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}
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pub(crate) fn validate_datetime(dt: &DateTime) -> Result<(), Error> {
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if dt.year() < 0 || dt.year() > 4095 {
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// rp2040 can't hold these years
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Err(Error::InvalidYear)
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} else {
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// The rest of the chrono date is assumed to be valid
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Ok(())
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}
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}
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pub(super) fn write_setup_0(dt: &DateTime, w: &mut Setup0) {
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w.set_year(dt.year() as u16);
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w.set_month(dt.month() as u8);
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w.set_day(dt.day() as u8);
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}
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pub(super) fn write_setup_1(dt: &DateTime, w: &mut Setup1) {
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w.set_dotw(dt.weekday().num_days_from_sunday() as u8);
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w.set_hour(dt.hour() as u8);
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w.set_min(dt.minute() as u8);
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w.set_sec(dt.second() as u8);
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}
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pub(super) fn datetime_from_registers(rtc_0: Rtc0, rtc_1: Rtc1) -> Result<DateTime, Error> {
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let year = rtc_1.year() as i32;
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let month = rtc_1.month() as u32;
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let day = rtc_1.day() as u32;
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let hour = rtc_0.hour() as u32;
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let minute = rtc_0.min() as u32;
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let second = rtc_0.sec() as u32;
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let date = chrono::NaiveDate::from_ymd_opt(year, month, day).ok_or(Error::InvalidDate)?;
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let time = chrono::NaiveTime::from_hms_opt(hour, minute, second).ok_or(Error::InvalidTime)?;
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Ok(DateTime::new(date, time))
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}
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