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authorGravatar Jorge Aparicio <jorge@japaric.io> 2017-07-20 22:53:44 -0500
committerGravatar Jorge Aparicio <jorge@japaric.io> 2017-07-20 22:53:44 -0500
commitc7b9507a57f2ba28c18b15dd2719a1c56f74a302 (patch)
tree1fed754475cdbe4baf0d2f1445ce2777b437de31 /src/examples/_5_generics.rs
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`Resource` trait, docs, examples and rtfm-syntax related changes
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+//! Working with resources in a generic fashion
+//!
+//! ```
+//!
+//! #![deny(unsafe_code)]
+//! #![feature(proc_macro)]
+//! #![no_std]
+//!
+//! #[macro_use(task)]
+//! extern crate cortex_m_rtfm as rtfm;
+//! extern crate stm32f103xx;
+//!
+//! use rtfm::{app, Resource, Threshold};
+//! use stm32f103xx::{SPI1, GPIOA};
+//!
+//! app! {
+//! device: stm32f103xx,
+//!
+//! tasks: {
+//! EXTI0: {
+//! enabled: true,
+//! priority: 1,
+//! resources: [GPIOA, SPI1],
+//! },
+//!
+//! EXTI1: {
+//! enabled: true,
+//! priority: 2,
+//! resources: [GPIOA, SPI1],
+//! },
+//! },
+//! }
+//!
+//! fn init(_p: init::Peripherals) {}
+//!
+//! fn idle() -> ! {
+//! loop {
+//! rtfm::wfi();
+//! }
+//! }
+//!
+//! // a generic function to use resources in any task (regardless of its priority)
+//! fn work<G, S>(t: &mut Threshold, gpioa: &G, spi1: &S)
+//! where
+//! G: Resource<Data = GPIOA>,
+//! S: Resource<Data = SPI1>,
+//! {
+//! gpioa.claim(t, |_gpioa, t| {
+//! // drive NSS low
+//!
+//! spi1.claim(t, |_spi1, _| {
+//! // transfer data
+//! });
+//!
+//! // drive NSS high
+//! });
+//! }
+//!
+//! task!(EXTI0, exti0);
+//!
+//! // this task needs critical sections to access the resources
+//! fn exti0(t: &mut Threshold, r: EXTI0::Resources) {
+//! work(t, &r.GPIOA, &r.SPI1);
+//! }
+//!
+//! task!(EXTI1, exti1);
+//!
+//! // this task has direct access to the resources
+//! fn exti1(t: &mut Threshold, r: EXTI1::Resources) {
+//! work(t, r.GPIOA, r.SPI1);
+//! }
+//! ```
+// Auto-generated. Do not modify.