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Fix EasyDMA slice copying not actually copying data

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Til Blechschmidt 2022-02-23 23:38:18 +01:00
parent 6dc58645d2
commit 62407da29b
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GPG Key ID: 2F4E54D35C8390CB
1 changed files with 7 additions and 4 deletions
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11
embassy-nrf/src/spim.rs
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@ -8,6 +8,7 @@ use embassy::util::Unborrow;
use embassy_hal_common::unborrow;
use futures::future::poll_fn;
use crate::chip::FORCE_COPY_BUFFER_SIZE;
use crate::gpio::sealed::Pin as _;
use crate::gpio::{self, AnyPin};
use crate::gpio::{Pin as GpioPin, PselBits};
@ -273,8 +274,9 @@ impl<'d, T: Instance> Spim<'d, T> {
Ok(_) => Ok(()),
Err(Error::DMABufferNotInDataMemory) => {
trace!("Copying SPIM tx buffer into RAM for DMA");
let tx_copied = tx.clone();
self.blocking_inner_from_ram(rx, tx_copied)
let mut tx_buf = [0u8; FORCE_COPY_BUFFER_SIZE];
tx_buf[..tx.len()].copy_from_slice(tx);
self.blocking_inner_from_ram(rx, &tx_buf[..tx.len()])
}
Err(error) => Err(error),
}
@ -304,8 +306,9 @@ impl<'d, T: Instance> Spim<'d, T> {
Ok(_) => Ok(()),
Err(Error::DMABufferNotInDataMemory) => {
trace!("Copying SPIM tx buffer into RAM for DMA");
let tx_copied = tx.clone();
self.async_inner_from_ram(rx, tx_copied).await
let mut tx_buf = [0u8; FORCE_COPY_BUFFER_SIZE];
tx_buf[..tx.len()].copy_from_slice(tx);
self.async_inner_from_ram(rx, &tx_buf[..tx.len()]).await
}
Err(error) => Err(error),
}