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Async API #635

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Async API #635

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jbeaurivage
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@jbeaurivage jbeaurivage commented Oct 24, 2022

Provide APIs to use some peripherals using async/await.

HAL features

One new feature is added to the HAL: async

MSRV

This PR bumps the HAL MSRV to rustc 1.75. However everything compiles on stable.

Peripherals implemented

  • Timer/Counter (TC)
  • I2C
  • UART
  • SPI
  • DMAC
  • GPIO interrupts (EIC)

Todo

  • Document everything
  • Find best API for interrupt ownership
  • Convert to new peripheral-feature system, especially brand new modules

Examples

Some examples are provided for feather_m0 (and a few for metro_m4). Some more examples will be added in time, perhaps in a follow-up PR.

Breaking changes

  • The EIC drivers have a slightly new API.

@jbeaurivage jbeaurivage marked this pull request as ready for review January 8, 2024 22:08
@sajattack
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I'm sorry this sat so long. I'm pretty sure my feather m0 board is busted after I wired up a battery to it backwards. Would you mind porting more of the examples to metro m4 so I can get a better feel for this?

@jbeaurivage
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I'm sorry this sat so long. I'm pretty sure my feather m0 board is busted after I wired up a battery to it backwards. Would you mind porting more of the examples to metro m4 so I can get a better feel for this?

Of course! The feather_m0 examples are ported to metro_m4. Unfortunately they aren't yet using clock::v2 as I'm not super sure how to use it correctly. One example I think will definitely need testing is async_eic, I'm not 100% sure about it yet, even though it works well on thumbv6 targets.

kyp44 pushed a commit to kyp44/kuboble-rs that referenced this pull request Oct 7, 2024
…test `pygamer` and `atsamd-hal` to test using async timers for async delays.

However, now the display no longer works, which may be related to a SPI issue in the updated HAL: atsamd-rs/atsamd#751
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