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fix: read transfer options

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elagil 2025-08-25 21:10:59 +02:00 committed by Dario Nieuwenhuis
parent 1541f1e0c2
commit bfd82ff82c
1 changed files with 7 additions and 12 deletions
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19
embassy-stm32/src/dma/gpdma/ringbuffered.rs
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@ -76,7 +76,7 @@ impl<'a, W: Word> ReadableRingBuffer<'a, W> {
request: Request,
peri_addr: *mut W,
buffer: &'a mut [W],
mut options: TransferOptions,
_options: TransferOptions,
) -> Self {
into_ref!(channel);
let channel: PeripheralRef<'a, AnyChannel> = channel.map_into();
@ -84,31 +84,26 @@ impl<'a, W: Word> ReadableRingBuffer<'a, W> {
let half_len = buffer.len() / 2;
assert_eq!(half_len * 2, buffer.len());
options.half_transfer_ir = false;
options.complete_transfer_ir = true;
let items = [
LinearItem::new_read(request, peri_addr, &mut buffer[..half_len], options),
LinearItem::new_read(request, peri_addr, &mut buffer[half_len..], options),
LinearItem::new_read(request, peri_addr, &mut buffer[..half_len]),
LinearItem::new_read(request, peri_addr, &mut buffer[half_len..]),
];
let table = Table::new(items);
let this = Self {
Self {
channel,
ringbuf: ReadableDmaRingBuffer::new(buffer),
table,
user_buffer_half: BufferHalf::First,
};
this.channel.configure_linked_list(&this.table, options);
this
}
}
/// Start the ring buffer operation.
///
/// You must call this after creating it for it to work.
pub fn start(&mut self) {
unsafe { self.channel.configure_linked_list(&self.table, Default::default()) };
self.table.link(RunMode::Repeat);
self.channel.start();
}