Initialize UART serial

Cargo.lock

@@ -1086,6 +1086,7 @@ dependencies = [
  "defmt 1.0.1",
  "embassy-executor",
  "embassy-time",
+ "embedded-io 0.7.1",
  "esp-alloc",
  "esp-bootloader-esp-idf",
  "esp-hal",

Cargo.toml

@@ -29,6 +29,7 @@ rtt-target       = { version = "0.6.2", features = ["defmt"] }
 critical-section = "1.2.0"
 static_cell      = "2.1.1"
 ws2812-rs = "0.3.1"
+embedded-io = "0.7.1"
 
 
 [profile.dev]

src/bin/main.rs

@@ -10,10 +10,13 @@
 use defmt::info;
 use embassy_executor::Spawner;
 use embassy_time::Timer;
+use embedded_io::Write;
+use esp_hal::Blocking;
 use esp_hal::clock::CpuClock;
 use esp_hal::spi::master::{Spi, Config as SpiConfig};
 use esp_hal::time::Rate;
 use esp_hal::timer::timg::TimerGroup;
+use esp_hal::uart::{Config, Uart};
 use ws2812_rs::{WS2812SPI, SendColorBySPI, Color};
 
 #[panic_handler]
@@ -54,6 +57,9 @@ async fn main(spawner: Spawner) -> ! {
   let led = WS2812SPI::new(spi);
   spawner.spawn(heartbeat_task(led)).unwrap();
 
+  let uart0: Uart<Blocking> = Uart::new(peripherals.UART0, Config::default()).unwrap();
+  spawner.spawn(serial_task(uart0)).unwrap();
+
   info!("Padmapper initialized!");
 
   // Idle forever
@@ -63,7 +69,7 @@ async fn main(spawner: Spawner) -> ! {
 }
 
 #[embassy_executor::task]
-async fn heartbeat_task(mut led: WS2812SPI<Spi<'static, esp_hal::Blocking>>) {
+async fn heartbeat_task(mut led: WS2812SPI<Spi<'static, Blocking>>) {
   let on_color = Color([8, 0, 0]);
   let off_color = Color([0, 0, 0]);
 
@@ -78,3 +84,11 @@ async fn heartbeat_task(mut led: WS2812SPI<Spi<'static, esp_hal::Blocking>>) {
     Timer::after_millis(700).await;
   }
 }
+
+#[embassy_executor::task]
+async fn serial_task(mut uart: Uart<'static, Blocking>) {
+  loop {
+    let _ = uart.write_all(b"Hello from Padmapper!\r\n").unwrap();
+    Timer::after_secs(1).await;
+  }
+}