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//! Time units
use core::fmt::Display;
use core::ops::{Div, Mul};
/// Hertz
#[derive(Eq, PartialEq, Ord, PartialOrd, Clone, Copy, Debug)]
pub struct Hertz(pub u32);
impl Display for Hertz {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
write!(f, "{} Hz", self.0)
}
}
#[cfg(feature = "defmt")]
impl defmt::Format for Hertz {
fn format(&self, f: defmt::Formatter) {
defmt::write!(f, "{=u32} Hz", self.0)
}
}
impl Hertz {
/// Create a `Hertz` from the given hertz.
pub const fn hz(hertz: u32) -> Self {
Self(hertz)
}
/// Create a `Hertz` from the given kilohertz.
pub const fn khz(kilohertz: u32) -> Self {
Self(kilohertz * 1_000)
}
/// Create a `Hertz` from the given megahertz.
pub const fn mhz(megahertz: u32) -> Self {
Self(megahertz * 1_000_000)
}
}
/// This is a convenience shortcut for [`Hertz::hz`]
pub const fn hz(hertz: u32) -> Hertz {
Hertz::hz(hertz)
}
/// This is a convenience shortcut for [`Hertz::khz`]
pub const fn khz(kilohertz: u32) -> Hertz {
Hertz::khz(kilohertz)
}
/// This is a convenience shortcut for [`Hertz::mhz`]
pub const fn mhz(megahertz: u32) -> Hertz {
Hertz::mhz(megahertz)
}
impl Mul<u32> for Hertz {
type Output = Hertz;
fn mul(self, rhs: u32) -> Self::Output {
Hertz(self.0 * rhs)
}
}
impl Div<u32> for Hertz {
type Output = Hertz;
fn div(self, rhs: u32) -> Self::Output {
Hertz(self.0 / rhs)
}
}
impl Mul<u16> for Hertz {
type Output = Hertz;
fn mul(self, rhs: u16) -> Self::Output {
self * (rhs as u32)
}
}
impl Div<u16> for Hertz {
type Output = Hertz;
fn div(self, rhs: u16) -> Self::Output {
self / (rhs as u32)
}
}
impl Mul<u8> for Hertz {
type Output = Hertz;
fn mul(self, rhs: u8) -> Self::Output {
self * (rhs as u32)
}
}
impl Div<u8> for Hertz {
type Output = Hertz;
fn div(self, rhs: u8) -> Self::Output {
self / (rhs as u32)
}
}
impl Div<Hertz> for Hertz {
type Output = u32;
fn div(self, rhs: Hertz) -> Self::Output {
self.0 / rhs.0
}
}
#[repr(C)]
#[derive(Eq, PartialEq, Ord, PartialOrd, Clone, Copy, Debug, Default)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
/// A variant on [Hertz] that acts as an `Option<Hertz>` that is smaller and repr C.
///
/// An `Option<Hertz>` can be `.into()`'d into this type and back.
/// The only restriction is that that [Hertz] cannot have the value 0 since that's
/// seen as the `None` variant.
pub struct MaybeHertz(u32);
impl MaybeHertz {
/// Same as calling the `.into()` function, but without type inference.
pub fn to_hertz(self) -> Option<Hertz> {
self.into()
}
}
impl From<Option<Hertz>> for MaybeHertz {
fn from(value: Option<Hertz>) -> Self {
match value {
Some(Hertz(0)) => panic!("Hertz cannot be 0"),
Some(Hertz(val)) => Self(val),
None => Self(0),
}
}
}
impl From<MaybeHertz> for Option<Hertz> {
fn from(value: MaybeHertz) -> Self {
match value {
MaybeHertz(0) => None,
MaybeHertz(val) => Some(Hertz(val)),
}
}
}
|
