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update docs (#977)

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Add notice for systems without native CAS operations
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Robin Mueller 2024-09-18 15:14:28 +02:00 committed by GitHub
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rtic-monotonics/src/lib.rs
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@ -1,6 +1,11 @@
//! In-tree implementations of the [`rtic_time::Monotonic`] (reexported) trait for
//! timers & clocks found on commonly used microcontrollers.
//!
//! If you are using a microcontroller where CAS operations are not available natively, you might
//! have to enable the `critical-section` or `unsafe-assume-single-core` feature of the
//! [`portable-atomic`](https://docs.rs/portable-atomic/latest/portable_atomic/) dependency
//! yourself for this dependency to compile.
//!
//! To enable the implementations, you must enable a feature for the specific MCU you're targeting.
//!
//! # Cortex-M Systick