Add example to show useage of rp2040 rosc

examples/rp/src/bin/rosc.rs

@@ -0,0 +1,32 @@
+//! This example test the RP Pico on board LED.
+//!
+//! It does not work with the RP Pico W board. See wifi_blinky.rs.
+
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_rp::{clocks, gpio};
+use embassy_time::Timer;
+use gpio::{Level, Output};
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let mut config = embassy_rp::config::Config::default();
+    config.clocks = clocks::ClockConfig::rosc();
+    let p = embassy_rp::init(config);
+    let mut led = Output::new(p.PIN_25, Level::Low);
+
+    loop {
+        info!("led on!");
+        led.set_high();
+        Timer::after_secs(1).await;
+
+        info!("led off!");
+        led.set_low();
+        Timer::after_secs(1).await;
+    }
+}