Add example of rtos-trace / SystemView

1 files changed, 64 insertions, 0 deletions

diff --git a/examples/nrf/src/bin/rtos_trace.rs b/examples/nrf/src/bin/rtos_trace.rs
new file mode 100644
index 000000000..8b4f5b755
--- /dev/null
+++ b/examples/nrf/src/bin/rtos_trace.rs
@@ -0,0 +1,64 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use core::task::Poll;
+
+use embassy_executor::executor::Spawner;
+use embassy_executor::time::{Duration, Instant, Timer};
+use embassy_nrf::Peripherals;
+
+// N.B. systemview_target cannot be used at the same time as defmt_rtt.
+
+use rtos_trace;
+use systemview_target::SystemView;
+use panic_probe as _;
+use log::*;
+
+static LOGGER: systemview_target::SystemView = systemview_target::SystemView::new();
+rtos_trace::global_trace!{SystemView}
+
+struct TraceInfo();
+
+impl rtos_trace::RtosTraceApplicationCallbacks for TraceInfo {
+    fn system_description() {}
+    fn sysclock() -> u32 {
+        64000000
+    }
+}
+rtos_trace::global_application_callbacks!{TraceInfo}
+
+#[embassy_executor::task]
+async fn run1() {
+    loop {
+        info!("DING DONG");
+        Timer::after(Duration::from_ticks(16000)).await;
+    }
+}
+
+#[embassy_executor::task]
+async fn run2() {
+    loop {
+        Timer::at(Instant::from_ticks(0)).await;
+    }
+}
+
+#[embassy_executor::task]
+async fn run3() {
+    futures::future::poll_fn(|cx| {
+        cx.waker().wake_by_ref();
+        Poll::<()>::Pending
+    })
+    .await;
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner, _p: Peripherals) {
+    LOGGER.init();
+    ::log::set_logger(&LOGGER).ok();
+    ::log::set_max_level(::log::LevelFilter::Trace);
+
+    spawner.spawn(run1()).unwrap();
+    spawner.spawn(run2()).unwrap();
+    spawner.spawn(run3()).unwrap();
+}