info! printing to the terminal

hal_rng/src/bin/main.rs

@@ -3,10 +3,11 @@
 #![no_std]
 #![no_main]
 
+use defmt::*;
 use embassy_executor::Spawner;
 use embassy_stm32::rng::Rng;
 use embassy_stm32::{bind_interrupts, peripherals, rng};
-use panic_probe as _;
+use {defmt_rtt as _, panic_probe as _};
 
 bind_interrupts!(struct Irqs {
     RNG => rng::InterruptHandler<peripherals::RNG>;
@@ -16,7 +17,11 @@ bind_interrupts!(struct Irqs {
 async fn main(_spawner: Spawner) {
     let p = embassy_stm32::init(Default::default());
 
+    info!("Hello World!");
+
     let mut rng = Rng::new(p.RNG, Irqs);
 
     let mut buf = [0u8; 16];
+    unwrap!(rng.async_fill_bytes(&mut buf).await);
+    info!("random bytes: {:02x}", buf);
 }

hal_rng/src/lib.rs

@@ -0,0 +1 @@
+#![no_std]