Merge #97

97: v0.4.0 r=japaric a=japaric

closes #32
closes #33

Co-authored-by: Jorge Aparicio <jorge@japaric.io>

1 files changed, 44 insertions, 0 deletions

diff --git a/examples/init.rs b/examples/init.rs
new file mode 100644
index 0000000..d6caa60
--- /dev/null
+++ b/examples/init.rs
@@ -0,0 +1,44 @@
+//! examples/init.rs
+
+#![deny(unsafe_code)]
+#![deny(warnings)]
+#![no_main]
+#![no_std]
+
+extern crate panic_semihosting;
+
+use cortex_m_semihosting::debug;
+use rtfm::app;
+
+// NOTE: This convenience macro will appear in all the other examples and
+// will always look the same
+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() {
+        static mut X: u32 = 0;
+
+        // Cortex-M peripherals
+        let _core: rtfm::Peripherals = core;
+
+        // Device specific peripherals
+        let _device: lm3s6965::Peripherals = device;
+
+        // Safe access to local `static mut` variable
+        let _x: &'static mut u32 = X;
+
+        println!("init");
+
+        debug::exit(debug::EXIT_SUCCESS);
+    }
+};