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-rw-r--r--examples/resource.rs60
1 files changed, 60 insertions, 0 deletions
diff --git a/examples/resource.rs b/examples/resource.rs
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+//! examples/resource.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: () = {
+ // A resource
+ static mut SHARED: u32 = 0;
+
+ #[init]
+ fn init() {
+ rtfm::pend(Interrupt::UART0);
+ rtfm::pend(Interrupt::UART1);
+ }
+
+ #[idle]
+ fn idle() -> ! {
+ debug::exit(debug::EXIT_SUCCESS);
+
+ // error: `SHARED` can't be accessed from this context
+ // SHARED += 1;
+
+ loop {}
+ }
+
+ // `SHARED` can be access from this context
+ #[interrupt(resources = [SHARED])]
+ fn UART0() {
+ *resources.SHARED += 1;
+
+ println!("UART0: SHARED = {}", resources.SHARED);
+ }
+
+ // `SHARED` can be access from this context
+ #[interrupt(resources = [SHARED])]
+ fn UART1() {
+ *resources.SHARED += 1;
+
+ println!("UART1: SHARED = {}", resources.SHARED);
+ }
+};