1 files changed, 64 insertions, 0 deletions

diff --git a/examples/rp23/src/bin/trng.rs b/examples/rp23/src/bin/trng.rs
new file mode 100644
index 000000000..e146baa2e
--- /dev/null
+++ b/examples/rp23/src/bin/trng.rs
@@ -0,0 +1,64 @@
+//! This example shows TRNG usage
+
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_rp::bind_interrupts;
+use embassy_rp::block::ImageDef;
+use embassy_rp::gpio::{Level, Output};
+use embassy_rp::peripherals::TRNG;
+use embassy_rp::trng::Trng;
+use embassy_time::Timer;
+use rand::RngCore;
+use {defmt_rtt as _, panic_probe as _};
+
+#[link_section = ".start_block"]
+#[used]
+pub static IMAGE_DEF: ImageDef = ImageDef::secure_exe();
+
+// Program metadata for `picotool info`
+#[link_section = ".bi_entries"]
+#[used]
+pub static PICOTOOL_ENTRIES: [embassy_rp::binary_info::EntryAddr; 4] = [
+    embassy_rp::binary_info::rp_program_name!(c"example"),
+    embassy_rp::binary_info::rp_cargo_version!(),
+    embassy_rp::binary_info::rp_program_description!(c"Blinky"),
+    embassy_rp::binary_info::rp_program_build_attribute!(),
+];
+
+bind_interrupts!(struct Irqs {
+    TRNG_IRQ => embassy_rp::trng::InterruptHandler<TRNG>;
+});
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let peripherals = embassy_rp::init(Default::default());
+
+    // Initialize the TRNG with default configuration
+    let mut trng = Trng::new(peripherals.TRNG, Irqs, embassy_rp::trng::Config::default());
+    // A buffer to collect random bytes in.
+    let mut randomness = [0u8; 58];
+
+    let mut led = Output::new(peripherals.PIN_25, Level::Low);
+
+    loop {
+        trng.fill_bytes(&mut randomness).await;
+        info!("Random bytes async {}", &randomness);
+        trng.blocking_fill_bytes(&mut randomness);
+        info!("Random bytes blocking {}", &randomness);
+        let random_u32 = trng.next_u32();
+        let random_u64 = trng.next_u64();
+        info!("Random u32 {} u64 {}", random_u32, random_u64);
+        // Random number of blinks between 0 and 31
+        let blinks = random_u32 % 32;
+        for _ in 0..blinks {
+            led.set_high();
+            Timer::after_millis(20).await;
+            led.set_low();
+            Timer::after_millis(20).await;
+        }
+        Timer::after_millis(1000).await;
+    }
+}