feat: add example for divergent tasks

examples/lm3s6965/examples/static-recources-in-divergent.rs

@@ -0,0 +1,67 @@
+//! examples/static-resources-in-divergent.rs
+
+#![no_main]
+#![no_std]
+#![deny(warnings)]
+#![deny(unsafe_code)]
+#![deny(missing_docs)]
+
+use panic_semihosting as _;
+use rtic_monotonics::systick::prelude::*;
+systick_monotonic!(Mono, 100);
+
+#[rtic::app(device = lm3s6965, dispatchers = [UART0])]
+mod app {
+    use super::*;
+
+    use cortex_m_semihosting::{debug, hprintln};
+    use rtic_sync::channel::{Channel, Receiver};
+
+    #[shared]
+    struct Shared {}
+
+    #[local]
+    struct Local {}
+
+    #[init]
+    fn init(cx: init::Context) -> (Shared, Local) {
+        Mono::start(cx.core.SYST, 12_000_000);
+
+        divergent::spawn().ok();
+
+        (Shared {}, Local {})
+    }
+
+    #[task(local = [q: Channel<u32, 5> = Channel::new()], priority = 1)]
+    async fn divergent(cx: divergent::Context) -> ! {
+        // `q` has `'static` lifetime. You can put references to it in `static` variables,
+        // structs with references to `q` do not need a generic lifetime parameter, etc.
+
+        let (mut tx, rx) = cx.local.q.split();
+        let mut state = 0;
+
+        bar::spawn(rx).unwrap();
+
+        loop {
+            tx.send(state).await.unwrap();
+            state += 1;
+            Mono::delay(100.millis()).await;
+        }
+    }
+
+    #[task(priority = 1)]
+    async fn bar(_cx: bar::Context, mut rx: Receiver<'static, u32, 5>) -> ! {
+        loop {
+            // Lock-free access to the same underlying queue!
+            if let Some(data) = rx.recv().await.ok() {
+                hprintln!("received message: {}", data);
+
+                if data == 3 {
+                    debug::exit(debug::EXIT_SUCCESS); // Exit QEMU simulator
+                } else {
+                    Mono::delay(100.millis()).await;
+                }
+            }
+        }
+    }
+}

examples/lm3s6965/examples/static-recources-in-init.rs

@@ -1,4 +1,4 @@
-//! examples/static.rs
+//! examples/static-resources-in-init.rs
 
 #![no_main]
 #![no_std]