Struct esp32_hal::twai::filter::DualExtendedFilter

pub struct DualExtendedFilter { /* private fields */ }

NOTE: The dual extended id acceptance filters can only match “the first 16 bits of the 29-bit ID”.

Warning: This is not a perfect filter. Standard ids that match the bit layout of this filter will also be accepted.

Implementations

impl DualExtendedFilter

pub const fn new(ids: [&[u8; 16]; 2]) -> DualExtendedFilter

Create a filter that matches the first 16 bits of two 29-bit extended ids.

Examples

A filter that matches ids with 4 bits either set or reset in the higher part of the id. For example this id matches: 0x000f000f, 0x000f000a, 0x0000000a, 0x0000000b. But it does not match: 0x000a000a

const FILTER: twai::filter::DualExtendedFilter =
    twai::filter::DualExtendedFilter::new([b"xxxxxxxxx0000xxx", b"xxxxxxxxx1111xxx"]);

pub fn new_from_code_mask( ids_code: [u16; 2], ids_mask: [u16; 2] ) -> DualExtendedFilter

Create a new filter matching the first 16 bits of two 29-bit ids.

The masks indicate which bits of the code the filter should match against. Set bits in the mask indicate that the corresponding bit in the code should match.

Trait Implementations

impl Filter for DualExtendedFilter

const FILTER_TYPE: FilterType = FilterType::Dual

The type of the filter.

fn to_registers(&self) -> [u8; 8]

Get the register level representation of the filter.

fn filter_type(&self) -> FilterType