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Diffstat (limited to 'examples/resource.rs')
-rw-r--r-- | examples/resource.rs | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/examples/resource.rs b/examples/resource.rs new file mode 100644 index 00000000..2777da17 --- /dev/null +++ b/examples/resource.rs @@ -0,0 +1,60 @@ +//! 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); + } +}; |