From c631049efcadca8b07940c794cce2be58fa48444 Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <jorge@japaric.io>
Date: Sat, 3 Nov 2018 17:02:41 +0100
Subject: v0.4.0

closes #32
closes #33
---
 examples/idle.rs | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 examples/idle.rs

(limited to 'examples/idle.rs')

diff --git a/examples/idle.rs b/examples/idle.rs
new file mode 100644
index 0000000..013ccce
--- /dev/null
+++ b/examples/idle.rs
@@ -0,0 +1,43 @@
+//! examples/idle.rs
+
+#![deny(unsafe_code)]
+#![deny(warnings)]
+#![no_main]
+#![no_std]
+
+extern crate panic_semihosting;
+
+use cortex_m_semihosting::debug;
+use rtfm::app;
+
+macro_rules! println {
+    ($($tt:tt)*) => {
+        if let Ok(mut stdout) = cortex_m_semihosting::hio::hstdout() {
+            use core::fmt::Write;
+
+            writeln!(stdout, $($tt)*).ok();
+        }
+    };
+}
+
+#[app(device = lm3s6965)]
+const APP: () = {
+    #[init]
+    fn init() {
+        println!("init");
+    }
+
+    #[idle]
+    fn idle() -> ! {
+        static mut X: u32 = 0;
+
+        // Safe access to local `static mut` variable
+        let _x: &'static mut u32 = X;
+
+        println!("idle");
+
+        debug::exit(debug::EXIT_SUCCESS);
+
+        loop {}
+    }
+};
-- 
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