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Heartbeat LED blink in separate embassy task

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This commit is contained in:
Jared Burce
2026-05-16 03:13:53 -07:00
parent c9e48e1478
commit 021a096d33
1 changed files with 24 additions and 10 deletions
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src/bin/main.rs
+24 -10
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@@ -9,7 +9,7 @@
use defmt::info; use defmt::info;
use embassy_executor::Spawner; use embassy_executor::Spawner;
use embassy_time::{Duration, Timer}; use embassy_time::Timer;
use esp_hal::clock::CpuClock; use esp_hal::clock::CpuClock;
use esp_hal::spi::master::{Spi, Config as SpiConfig}; use esp_hal::spi::master::{Spi, Config as SpiConfig};
use esp_hal::time::Rate; use esp_hal::time::Rate;
@@ -27,6 +27,8 @@ extern crate alloc;
// For more information see: <https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/app_image_format.html#application-description> // For more information see: <https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/app_image_format.html#application-description>
esp_bootloader_esp_idf::esp_app_desc!(); esp_bootloader_esp_idf::esp_app_desc!();
const LED_SPI_HZ: u32 = 3_200_000;
#[allow( #[allow(
clippy::large_stack_frames, clippy::large_stack_frames,
reason = "it's not unusual to allocate larger buffers etc. in main" reason = "it's not unusual to allocate larger buffers etc. in main"
@@ -45,22 +47,34 @@ async fn main(spawner: Spawner) -> ! {
let timg0 = TimerGroup::new(peripherals.TIMG0); let timg0 = TimerGroup::new(peripherals.TIMG0);
esp_rtos::start(timg0.timer0); esp_rtos::start(timg0.timer0);
// TODO: Spawn some tasks
let _ = spawner;
const LED_SPI_HZ: u32 = 3_200_000;
let spi = Spi::new(peripherals.SPI2, let spi = Spi::new(peripherals.SPI2,
SpiConfig::default().with_frequency(Rate::from_hz(LED_SPI_HZ))) SpiConfig::default().with_frequency(Rate::from_hz(LED_SPI_HZ)))
.unwrap() .unwrap()
.with_mosi(peripherals.GPIO48); .with_mosi(peripherals.GPIO48);
let mut led = WS2812SPI::new(spi); let led = WS2812SPI::new(spi);
spawner.spawn(heartbeat_task(led)).unwrap();
info!("Padmapper initialized!"); info!("Padmapper initialized!");
// Idle forever
loop { loop {
led.color_send_by_spi(Color([0, 0, 8]), LED_SPI_HZ).unwrap(); Timer::after_secs(6 * 60 * 60).await;
Timer::after(Duration::from_secs(1)).await; }
led.color_send_by_spi(Color([8, 0, 8]), LED_SPI_HZ).unwrap(); }
Timer::after(Duration::from_secs(1)).await;
#[embassy_executor::task]
async fn heartbeat_task(mut led: WS2812SPI<Spi<'static, esp_hal::Blocking>>) {
let on_color = Color([8, 0, 0]);
let off_color = Color([0, 0, 0]);
loop {
led.color_send_by_spi(on_color, LED_SPI_HZ).unwrap();
Timer::after_millis(100).await;
led.color_send_by_spi(off_color, LED_SPI_HZ).unwrap();
Timer::after_millis(100).await;
led.color_send_by_spi(on_color, LED_SPI_HZ).unwrap();
Timer::after_millis(100).await;
led.color_send_by_spi(off_color, LED_SPI_HZ).unwrap();
Timer::after_millis(700).await;
} }
} }