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v0.2.2

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Jorge Aparicio 2017-11-22 09:27:14 +01:00
parent c184f91e3c
commit 948e1fd0fb
10 changed files with 161 additions and 61 deletions
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9
CHANGELOG.md
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@ -5,6 +5,12 @@ This project adheres to [Semantic Versioning](http://semver.org/).
## [Unreleased]
## [v0.2.2] - 2017-11-22
### Added
- Support for runtime initialized resources ("late" resources).
## [v0.2.1] - 2017-07-29
### Fixed
@ -50,7 +56,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
- Initial release
[Unreleased]: https://github.com/japaric/cortex-m-rtfm/compare/v0.2.1...HEAD
[Unreleased]: https://github.com/japaric/cortex-m-rtfm/compare/v0.2.2...HEAD
[v0.2.2]: https://github.com/japaric/cortex-m-rtfm/compare/v0.2.1...v0.2.2
[v0.2.1]: https://github.com/japaric/cortex-m-rtfm/compare/v0.2.0...v0.2.1
[v0.2.0]: https://github.com/japaric/cortex-m-rtfm/compare/v0.1.1...v0.2.0
[v0.1.1]: https://github.com/japaric/cortex-m-rtfm/compare/v0.1.0...v0.1.1

4
Cargo.toml
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@ -10,13 +10,13 @@ keywords = ["arm", "cortex-m"]
license = "MIT OR Apache-2.0"
name = "cortex-m-rtfm"
repository = "https://github.com/japaric/cortex-m-rtfm"
version = "0.2.1"
version = "0.2.2"
[dependencies]
cortex-m = "0.3.1"
untagged-option = "0.1.1"
rtfm-core = "0.1.0"
cortex-m-rtfm-macros = { path = "macros" }
cortex-m-rtfm-macros = "0.2.1"
[target.'cfg(target_arch = "x86_64")'.dev-dependencies]
compiletest_rs = "0.2.8"

32
examples/late-resources.rs
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@ -16,19 +16,21 @@ app! {
// Usually, resources are initialized with a constant initializer:
static ON: bool = false;
// However, there are cases where this is not possible or not desired. For example, there
// may not be a sensible value to use, or the type may not be constructible in a constant
// (like `Vec`).
// While it is possible to use an `Option` in some cases, that requires you to properly
// initialize it and `.unwrap()` it at every use. It also consumes more memory.
// However, there are cases where this is not possible or not desired.
// For example, there may not be a sensible value to use, or the type may
// not be constructible in a constant (like `Vec`).
//
// To solve this, it is possible to defer initialization of resources to `init` by omitting
// the initializer. Doing that will require `init` to return the values of all "late"
// resources.
// While it is possible to use an `Option` in some cases, that requires
// you to properly initialize it and `.unwrap()` it at every use. It
// also consumes more memory.
//
// To solve this, it is possible to defer initialization of resources to
// `init` by omitting the initializer. Doing that will require `init` to
// return the values of all "late" resources.
static IP_ADDRESS: u32;
// PORT is used by 2 tasks, making it a shared resource. This just tests another internal
// code path and is not important for the example.
// PORT is used by 2 tasks, making it a shared resource. This just tests
// another internal code path and is not important for the example.
static PORT: u16;
},
@ -54,22 +56,24 @@ app! {
// The signature of `init` is now required to have a specific return type.
fn init(_p: init::Peripherals, _r: init::Resources) -> init::LateResourceValues {
// `init::Resources` does not contain `IP_ADDRESS`, since it is not yet initialized.
// `init::Resources` does not contain `IP_ADDRESS`, since it is not yet
// initialized.
//_r.IP_ADDRESS; // doesn't compile
// ...obtain value for IP_ADDRESS from EEPROM/DHCP...
let ip_address = 0x7f000001;
init::LateResourceValues {
// This struct will contain fields for all resources with omitted initializers.
// This struct will contain fields for all resources with omitted
// initializers.
IP_ADDRESS: ip_address,
PORT: 0,
}
}
fn sys_tick(_t: &mut Threshold, r: SYS_TICK::Resources) {
// Other tasks can access late resources like any other, since they are guaranteed to be
// initialized when tasks are run.
// Other tasks can access late resources like any other, since they are
// guaranteed to be initialized when tasks are run.
r.IP_ADDRESS;
}

1
gen-examples.sh
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@ -10,6 +10,7 @@ main() {
two-tasks
preemption
nested
late-resources
generics
full-syntax
)

2
macros/Cargo.toml
View file

@ -7,7 +7,7 @@ keywords = ["arm", "cortex-m"]
license = "MIT OR Apache-2.0"
name = "cortex-m-rtfm-macros"
repository = "https://github.com/japaric/cortex-m-rtfm"
version = "0.2.0"
version = "0.2.1"
[dependencies]
error-chain = "0.10.0"

78
macros/src/lib.rs
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@ -19,11 +19,9 @@ mod analyze;
mod check;
mod trans;
/// The `app!` macro, a macro used to specify the tasks and resources of a
/// RTFM application.
/// The `app!` macro, a macro used to specify the tasks and resources of a RTFM application.
///
/// The contents of this macro uses a `key: value` syntax. All the possible keys
/// are shown below:
/// The contents of this macro uses a `key: value` syntax. All the possible keys are shown below:
///
/// ``` text
/// app! {
@ -41,14 +39,13 @@ mod trans;
///
/// # `device`
///
/// The value of this key is a Rust path, like `foo::bar::baz`, that must point to
/// a *device crate*, a crate generated using `svd2rust`.
/// The value of this key is a Rust path, like `foo::bar::baz`, that must point to a *device crate*,
/// a crate generated using `svd2rust`.
///
/// # `resources`
///
/// This key is optional. Its value is a list of `static` variables. These
/// variables are the data that can be safely accessed, modified and shared by
/// tasks.
/// This key is optional. Its value is a list of `static` variables. These variables are the data
/// that can be safely accessed, modified and shared by tasks.
///
/// ``` text
/// resources: {
@ -56,15 +53,18 @@ mod trans;
/// static B: i32 = 0;
/// static C: [u8; 16] = [0; 16];
/// static D: Thing = Thing::new(..);
/// static E: Thing;
/// }
/// ```
///
/// The initial value of a resource can be omitted. This means that the resource will be runtime
/// initialized.
///
/// If this key is omitted its value defaults to an empty list.
///
/// # `init`
///
/// This key is optional. Its value is a set of key values. All the possible
/// keys are shown below:
/// This key is optional. Its value is a set of key values. All the possible keys are shown below:
///
/// ``` text
/// init: {
@ -74,15 +74,14 @@ mod trans;
///
/// ## `init.path`
///
/// This key is optional. Its value is a Rust path, like `foo::bar::baz`, that
/// points to the initialization function.
/// This key is optional. Its value is a Rust path, like `foo::bar::baz`, that points to the
/// initialization function.
///
/// If the key is omitted its value defaults to `init`.
///
/// # `idle`
///
/// This key is optional. Its value is a set of key values. All the possible
/// keys are shown below:
/// This key is optional. Its value is a set of key values. All the possible keys are shown below:
///
/// ``` text
/// idle: {
@ -93,25 +92,24 @@ mod trans;
///
/// ## `idle.path`
///
/// This key is optional. Its value is a Rust path, like `foo::bar::baz`, that
/// points to the idle loop function.
/// This key is optional. Its value is a Rust path, like `foo::bar::baz`, that points to the idle
/// loop function.
///
/// If the key is omitted its value defaults to `idle`.
///
/// ## `idle.resources`
///
/// This key is optional. Its value is a list of resources the `idle` loop has
/// access to. The resources in this list can refer to the resources listed in
/// the top `resources` key. If the name doesn't match one of the resources
/// listed in the top `resources` key the resource is assumed to be a
/// peripheral.
/// This key is optional. Its value is a list of resources the `idle` loop has access to. The
/// resources in this list can refer to the resources listed in the top `resources` key. If the name
/// doesn't match one of the resources /// listed in the top `resources` key the resource is assumed
/// to be a peripheral.
///
/// If omitted its value defaults to an empty list.
///
/// # `tasks`
///
/// This key is optional. Its value is a list of tasks. Each task itself is a
/// set of key value pair. The full syntax is shown below:
/// This key is optional. Its value is a list of tasks. Each task itself is a set of key value pair.
/// The full syntax is shown below:
///
/// ``` text
/// tasks: {
@ -128,39 +126,37 @@ mod trans;
///
/// ## `tasks.$TASK`
///
/// The key must be either a Cortex-M exception or a device specific interrupt.
/// `PENDSV`, `SVCALL`, `SYS_TICK` are considered as exceptions. All other names
/// are assumed to be interrupts.
/// The key must be either a Cortex-M exception or a device specific interrupt. `PENDSV`, `SVCALL`,
/// `SYS_TICK` are considered as exceptions. All other names are assumed to be interrupts.
///
/// ## `tasks.$TASK.enabled`
///
/// This key is optional for interrupts and forbidden for exceptions. Its value
/// must be a boolean and indicates whether the interrupt will be enabled
/// (`true`) or disabled (`false`) after `init` ends and before `idle` starts.
/// This key is optional for interrupts and forbidden for exceptions. Its value must be a boolean
/// and indicates whether the interrupt will be enabled (`true`) or disabled (`false`) after `init`
/// ends and before `idle` starts.
///
/// If this key is omitted its value defaults to `true`.
///
/// ## `tasks.$TASK.path`
///
/// The value of this key is a Rust path, like `foo::bar::baz`, that points to
/// the handler of this task.
/// The value of this key is a Rust path, like `foo::bar::baz`, that points to the handler of this
/// task.
///
/// ## `tasks.$TASK.priority`
///
/// This key is optional. Its value is an integer with type `u8` that specifies
/// the priority of this task. The minimum valid priority is 1. The maximum
/// valid priority depends on the number of the NVIC priority bits the device
/// has; if the device has 4 priority bits the maximum allowed value would be
/// 16.
/// This key is optional. Its value is an integer with type `u8` that specifies the priority of this
/// task. The minimum valid priority is 1. The maximum valid priority depends on the number of the
/// NVIC priority bits the device has; if the device has 4 priority bits the maximum allowed value
/// would be 16.
///
/// If this key is omitted its value defaults to `1`.
///
/// ## `tasks.$TASK.resources`
///
/// This key is optional. Its value is a list of resources this task has access
/// to. The resources in this list can refer to the resources listed in the top
/// `resources` key. If the name doesn't match one of the resources listed in
/// the top `resources` key the resource is assumed to be a peripheral.
/// This key is optional. Its value is a list of resources this task has access to. The resources in
/// this list can refer to the resources listed in the top `resources` key. If the name doesn't
/// match one of the resources listed in the top `resources` key the resource is assumed to be a
/// peripheral.
///
/// If omitted its value defaults to an empty list.
#[proc_macro]

91
src/examples/_5_late_resources.rs Normal file
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@ -0,0 +1,91 @@
//! Demonstrates initialization of resources in `init`.
//!
//! ```
//!
//! #![deny(unsafe_code)]
//! #![feature(proc_macro)]
//! #![no_std]
//!
//! extern crate cortex_m_rtfm as rtfm;
//! extern crate stm32f103xx;
//!
//! use rtfm::{app, Threshold};
//!
//! app! {
//! device: stm32f103xx,
//!
//! resources: {
//! // Usually, resources are initialized with a constant initializer:
//! static ON: bool = false;
//!
//! // However, there are cases where this is not possible or not desired.
//! // For example, there may not be a sensible value to use, or the type may
//! // not be constructible in a constant (like `Vec`).
//! //
//! // While it is possible to use an `Option` in some cases, that requires
//! // you to properly initialize it and `.unwrap()` it at every use. It
//! // also consumes more memory.
//! //
//! // To solve this, it is possible to defer initialization of resources to
//! // `init` by omitting the initializer. Doing that will require `init` to
//! // return the values of all "late" resources.
//! static IP_ADDRESS: u32;
//!
//! // PORT is used by 2 tasks, making it a shared resource. This just tests
//! // another internal code path and is not important for the example.
//! static PORT: u16;
//! },
//!
//! idle: {
//! // Test that late resources can be used in idle
//! resources: [IP_ADDRESS],
//! },
//!
//! tasks: {
//! SYS_TICK: {
//! priority: 1,
//! path: sys_tick,
//! resources: [IP_ADDRESS, PORT, ON],
//! },
//!
//! EXTI0: {
//! priority: 2,
//! path: exti0,
//! resources: [PORT],
//! }
//! }
//! }
//!
//! // The signature of `init` is now required to have a specific return type.
//! fn init(_p: init::Peripherals, _r: init::Resources) -> init::LateResourceValues {
//! // `init::Resources` does not contain `IP_ADDRESS`, since it is not yet
//! // initialized.
//! //_r.IP_ADDRESS; // doesn't compile
//!
//! // ...obtain value for IP_ADDRESS from EEPROM/DHCP...
//! let ip_address = 0x7f000001;
//!
//! init::LateResourceValues {
//! // This struct will contain fields for all resources with omitted
//! // initializers.
//! IP_ADDRESS: ip_address,
//! PORT: 0,
//! }
//! }
//!
//! fn sys_tick(_t: &mut Threshold, r: SYS_TICK::Resources) {
//! // Other tasks can access late resources like any other, since they are
//! // guaranteed to be initialized when tasks are run.
//!
//! r.IP_ADDRESS;
//! }
//!
//! fn exti0(_t: &mut Threshold, _r: EXTI0::Resources) {}
//!
//! fn idle(_t: &mut Threshold, _r: idle::Resources) -> ! {
//! loop {
//! rtfm::wfi();
//! }
//! }
//! ```
// Auto-generated. Do not modify.

0
src/examples/_5_generics.rs → src/examples/_6_generics.rs
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0
src/examples/_6_full_syntax.rs → src/examples/_7_full_syntax.rs
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5
src/examples/mod.rs
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@ -5,5 +5,6 @@ pub mod _1_one_task;
pub mod _2_two_tasks;
pub mod _3_preemption;
pub mod _4_nested;
pub mod _5_generics;
pub mod _6_full_syntax;
pub mod _5_late_resources;
pub mod _6_generics;
pub mod _7_full_syntax;