Don't own DWT
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This is fine as long as the user does not change or disable the cycle counter. It allows the other DWT features to be used freely by the application.
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AfoHT
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Feb 6, 2022
* upstream/master: restrict ext pub use Update Cargo.toml
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The DWT has a lot of other functionality besides the cycle counter that the user can currently not access safely as DwtSystick owns DWT.
Once set up (
new()andreset())DwtSystickonly needs the DWT to read the cycle counter. That could also be done safely without owning the DWT.If we borrow DWT only for cycle counter configuration, the user could keep and use its other functionality afterwards. The downside is that the user would have to manually ensure that they don't disable or reset cycle counter after
reset().On balance this may be acceptable.