v0.4.0

closes #32
closes #33

1 files changed, 61 insertions, 0 deletions

diff --git a/examples/interrupt.rs b/examples/interrupt.rs
new file mode 100644
index 00000000..19b1fed0
--- /dev/null
+++ b/examples/interrupt.rs
@@ -0,0 +1,61 @@
+//! examples/interrupt.rs
+
+#![deny(unsafe_code)]
+#![deny(warnings)]
+#![no_main]
+#![no_std]
+
+extern crate panic_semihosting;
+
+use cortex_m_semihosting::debug;
+use lm3s6965::Interrupt;
+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() {
+        // Pends the UART0 interrupt but its handler won't run until *after*
+        // `init` returns because interrupts are disabled
+        rtfm::pend(Interrupt::UART0);
+
+        println!("init");
+    }
+
+    #[idle]
+    fn idle() -> ! {
+        // interrupts are enabled again; the `UART0` handler runs at this point
+
+        println!("idle");
+
+        rtfm::pend(Interrupt::UART0);
+
+        debug::exit(debug::EXIT_SUCCESS);
+
+        loop {}
+    }
+
+    #[interrupt]
+    fn UART0() {
+        static mut TIMES: u32 = 0;
+
+        // Safe access to local `static mut` variable
+        *TIMES += 1;
+
+        println!(
+            "UART0 called {} time{}",
+            *TIMES,
+            if *TIMES > 1 { "s" } else { "" }
+        );
+    }
+};