72 lines
1.7 KiB
Rust
72 lines
1.7 KiB
Rust
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#[derive(Clone, Copy)]
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#[repr(C)]
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pub struct SdpcmHeader {
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pub len: u16,
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pub len_inv: u16,
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/// Rx/Tx sequence number
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pub sequence: u8,
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/// 4 MSB Channel number, 4 LSB arbitrary flag
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pub channel_and_flags: u8,
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/// Length of next data frame, reserved for Tx
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pub next_length: u8,
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/// Data offset
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pub header_length: u8,
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/// Flow control bits, reserved for Tx
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pub wireless_flow_control: u8,
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/// Maximum Sequence number allowed by firmware for Tx
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pub bus_data_credit: u8,
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/// Reserved
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pub reserved: [u8; 2],
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}
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#[derive(Clone, Copy)]
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#[repr(C)]
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pub struct CdcHeader {
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pub cmd: u32,
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pub out_len: u16,
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pub in_len: u16,
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pub flags: u16,
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pub id: u16,
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pub status: u32,
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}
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#[derive(Clone, Copy)]
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#[repr(C)]
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pub struct BdcHeader {
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pub flags: u8,
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/// 802.1d Priority (low 3 bits)
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pub priority: u8,
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pub flags2: u8,
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/// Offset from end of BDC header to packet data, in 4-uint8_t words. Leaves room for optional headers.
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pub data_offset: u8,
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}
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#[derive(Clone, Copy)]
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#[repr(C)]
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pub struct DownloadHeader {
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pub flag: u16,
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pub dload_type: u16,
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pub len: u32,
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pub crc: u32,
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}
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macro_rules! impl_bytes {
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($t:ident) => {
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impl $t {
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pub const SIZE: usize = core::mem::size_of::<Self>();
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pub fn to_bytes(&self) -> [u8; Self::SIZE] {
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unsafe { core::mem::transmute(*self) }
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}
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pub fn from_bytes(bytes: &[u8; Self::SIZE]) -> Self {
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unsafe { core::mem::transmute(*bytes) }
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}
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}
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};
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}
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impl_bytes!(SdpcmHeader);
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impl_bytes!(CdcHeader);
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impl_bytes!(BdcHeader);
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impl_bytes!(DownloadHeader);
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