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Abort DMA operation when dropping a Transfer, and panic on DMA errors

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This commit is contained in:
Mathias 2022-08-23 13:20:36 +02:00
parent f6c2e26372
commit 7e3ce2c90b
1 changed files with 14 additions and 2 deletions
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16
embassy-rp/src/dma.rs
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@ -14,8 +14,18 @@ use crate::{interrupt, pac, peripherals};
#[interrupt]
unsafe fn DMA_IRQ_0() {
let ints0 = pac::DMA.ints0().read().ints0();
for channel in 0..CHANNEL_COUNT {
let ctrl_trig = pac::DMA.ch(channel).ctrl_trig().read();
if ctrl_trig.ahb_error() {
panic!("DMA: ahb error on DMA_0 channel {}", channel);
}
if ctrl_trig.read_error() {
panic!("DMA: read error on DMA_0 channel {}", channel);
}
if ctrl_trig.write_error() {
panic!("DMA: write error on DMA_0 channel {}", channel);
}
if ints0 & (1 << channel) == (1 << channel) {
CHANNEL_WAKERS[channel].wake();
}
@ -119,7 +129,9 @@ impl<'a, C: Channel> Drop for Transfer<'a, C> {
fn drop(&mut self) {
let p = self.channel.regs();
unsafe {
p.ctrl_trig().write(|w| w.set_en(false));
pac::DMA
.chan_abort()
.modify(|m| m.set_chan_abort(1 << self.channel.number()));
while p.ctrl_trig().read().busy() {}
}
}