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use super::Id;
use crate::sys;
use std::fmt;
use std::mem::MaybeUninit;
#[derive(Clone, Copy)]
pub struct DataFrame(pub(super) sys::can_frame);
impl DataFrame {
pub fn new(id: Id, data: &[u8]) -> Self {
assert!(data.len() <= sys::CAN_MAX_DLEN as _);
let mut inner = MaybeUninit::<sys::can_frame>::zeroed();
unsafe {
(*inner.as_mut_ptr()).can_id = id.into_can_id();
(*inner.as_mut_ptr()).can_dlc = data.len() as _;
(*inner.as_mut_ptr()).data[..data.len()].copy_from_slice(data);
Self(inner.assume_init())
}
}
pub fn id(&self) -> Id {
Id::from_can_id(self.0.can_id)
}
pub fn data(&self) -> &[u8] {
&self.0.data[..self.0.can_dlc as _]
}
}
impl fmt::Debug for DataFrame {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt.debug_struct("DataFrame")
.field("id", &self.id())
.field("data", &self.data())
.finish()
}
}
#[cfg(test)]
mod tests;