forked from M-Labs/humpback-dds
63 lines
1.8 KiB
Rust
63 lines
1.8 KiB
Rust
use embedded_hal::{
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blocking::spi::Transfer,
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digital::v2::OutputPin,
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};
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use core::marker::PhantomData;
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use crate::{DoOnGetRefMutData, Error, SelectChip, IssueIOUpdate};
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pub struct SPISlave<'a, DEV: 'a, SPI, CS0, CS1, CS2, GPIO> (
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&'a DEV,
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u8, // Channel of SPI slave
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bool, // Need I/O Update
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PhantomData<(SPI, CS0, CS1, CS2, GPIO)>,
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);
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pub struct Parts<'a, DEV: 'a, SPI, CS0, CS1, CS2, GPIO> {
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pub spi1: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
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pub spi2: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
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pub spi3: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
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pub spi4: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
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pub spi5: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
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pub spi6: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
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pub spi7: SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>,
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}
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impl<'a, DEV, SPI, CS0, CS1, CS2, GPIO> Parts<'a, DEV, SPI, CS0, CS1, CS2, GPIO> {
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pub(crate) fn new(cpld: &'a DEV) -> Self {
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Parts {
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spi1: SPISlave(&cpld, 1, false, PhantomData),
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spi2: SPISlave(&cpld, 2, false, PhantomData),
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spi3: SPISlave(&cpld, 3, true, PhantomData),
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spi4: SPISlave(&cpld, 4, true, PhantomData),
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spi5: SPISlave(&cpld, 5, true, PhantomData),
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spi6: SPISlave(&cpld, 6, true, PhantomData),
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spi7: SPISlave(&cpld, 7, true, PhantomData),
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}
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}
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}
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impl<'a, DEV, SPI, CS0, CS1, CS2, GPIO, E> Transfer<u8> for SPISlave<'a, DEV, SPI, CS0, CS1, CS2, GPIO>
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where
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CS2: OutputPin,
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CS1: OutputPin,
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CS0: OutputPin,
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DEV: DoOnGetRefMutData<SPI, CS0, CS1, CS2, GPIO>,
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SPI: Transfer<u8, Error = E>,
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GPIO: OutputPin,
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{
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type Error = Error<E>;
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fn transfer<'w>(&mut self, words: &'w mut[u8]) -> Result<&'w [u8], Self::Error> {
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self.0.do_on_get_ref_mut_data(move |mut dev| {
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dev.select_chip(self.1);
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let result = dev.spi.transfer(words).map_err(Error::SPI);
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dev.select_chip(0);
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if self.2 {
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dev.issue_io_update();
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}
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result
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})
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}
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}
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