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working with the dma library

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Priec
2025-11-09 21:24:58 +01:00
parent ef98b7e4e9
commit fa6b217bc4
2 changed files with 3 additions and 12 deletions
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2
dma_gpio2/Cargo.toml
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@@ -16,7 +16,7 @@ embassy-sync = { path = "/home/filip/programs/embassy/embassy-sync" }
embassy-time = { path = "/home/filip/programs/embassy/embassy-time", features = ["tick-hz-32_768"] }
embassy-hal-internal = { path = "/home/filip/programs/embassy/embassy-hal-internal" }
embassy-usb = { path = "/home/filip/programs/embassy/embassy-usb" }
embassy-stm32 = { path = "/home/filip/programs/embassy/embassy-stm32", features = ["unstable-pac", "stm32u575zi", "time-driver-tim2", "memory-x", "defmt", "dma_debug"] }
embassy-stm32 = { path = "/home/filip/programs/embassy/embassy-stm32", features = ["unstable-pac", "stm32u575zi", "time-driver-tim2", "memory-x", "defmt"] }
embedded-hal = "1.0.0"
embedded-graphics = "0.8.1"

13
dma_gpio2/src/bin/main.rs
View File

@@ -3,7 +3,6 @@
#![no_main]
use defmt::*;
use embassy_stm32::dma::ringbuffer::Error;
use embassy_executor::Spawner;
use embassy_futures::yield_now;
use embassy_stm32::dma::Request;
@@ -114,12 +113,12 @@ async fn main(_spawner: Spawner) {
loop {
info!("tick start");
//Timer::after(Duration::from_millis(400)).await;
Timer::after(Duration::from_millis(1021)).await;
//info!("tick end");
let used = encode_uart_frames(
TX_PIN_BIT,
b"Hihihi\r\n",
b"H\r\n",
&mut frame_buf,
)
.await;
@@ -158,14 +157,6 @@ async fn main(_spawner: Spawner) {
tx_ring.capacity()
);
}
Err(Error::Overrun) => {
warn!("XYZ");
// DMA lapped you. Must resync:
tx_ring.request_reset(); // Stop DMA
tx_ring.clear(); // Clear buffer
tx_ring.start(); // Restart
// Retry writing frame
}
}
info!("tick end");