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docs: embassy-net-adin1110

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This commit is contained in:
Ulf Lilleengen
2023-12-20 12:51:47 +01:00
parent 52a801fdb7
commit 246c49621c
6 changed files with 17 additions and 2 deletions
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7
embassy-net-adin1110/src/crc32.rs
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@ -1,3 +1,4 @@
/// CRC32 lookup table.
pub const CRC32R_LOOKUP_TABLE: [u32; 256] = [
0x0000_0000,
0x7707_3096,
@ -263,8 +264,10 @@ pub const CRC32R_LOOKUP_TABLE: [u32; 256] = [
pub struct ETH_FCS(pub u32);
impl ETH_FCS {
/// CRC32_OK
pub const CRC32_OK: u32 = 0x2144_df1c;
/// Create a new frame check sequence from `data`.
#[must_use]
pub fn new(data: &[u8]) -> Self {
let fcs = data.iter().fold(u32::MAX, |crc, byte| {
@ -274,6 +277,7 @@ impl ETH_FCS {
Self(fcs)
}
/// Update the frame check sequence with `data`.
#[must_use]
pub fn update(self, data: &[u8]) -> Self {
let fcs = data.iter().fold(self.0 ^ u32::MAX, |crc, byte| {
@ -283,16 +287,19 @@ impl ETH_FCS {
Self(fcs)
}
/// Check if the frame check sequence is correct.
#[must_use]
pub fn crc_ok(&self) -> bool {
self.0 == Self::CRC32_OK
}
/// Switch byte order.
#[must_use]
pub fn hton_bytes(&self) -> [u8; 4] {
self.0.to_le_bytes()
}
/// Switch byte order as a u32.
#[must_use]
pub fn hton(&self) -> u32 {
self.0.to_le()