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authorGravatar Jorge Aparicio <jorge@japaric.io> 2018-11-03 17:02:41 +0100
committerGravatar Jorge Aparicio <jorge@japaric.io> 2018-11-03 17:16:55 +0100
commitc631049efcadca8b07940c794cce2be58fa48444 (patch)
treef6bd73e5c396fc06072557ee965cc59e9c8e3e9f /examples/init.rs
parent653338e7997a0cdc5deaed98b1bb5f60006717ed (diff)
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v0.4.0
closes #32 closes #33
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+//! 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);
+ }
+};