1069: GPIOTE InputChannel with mutable reference. r=Dirbaio a=Ardelean-Calin
Adding these changes enables us to define a channel using a mutable reference to `GPIOTE_CH(n)`, similar to how we can do with other drivers. So instead of using:
```rust
let p = embassy_nrf::init(config);
let freq_in = InputChannel::new(
p.GPIOTE_CH0,
Input::new(&mut p.P0_19, embassy_nrf::gpio::Pull::Up),
embassy_nrf::gpiote::InputChannelPolarity::HiToLo,
);
```
we can use:
```rust
let p = embassy_nrf::init(config);
let freq_in = InputChannel::new(
&mut p.GPIOTE_CH0,
Input::new(&mut p.P0_19, embassy_nrf::gpio::Pull::Up),
embassy_nrf::gpiote::InputChannelPolarity::HiToLo,
);
```
therefore not giving ownership to GPIOTE_CH0.
Co-authored-by: Ardelean Călin Petru <ardelean.calin@outlook.com>
Co-authored-by: Ardelean Calin <ardelean.calin@proton.me>
1056: embassy-nrf: Add TWIS module r=Dirbaio a=kalkyl
Verified to be working on nrf9160
Co-authored-by: kalkyl <henrik.alser@me.com>
Co-authored-by: Henrik Alsér <henrik.alser@me.com>
Adding these changes enables us to define a channel using a mutable reference to `GPIOTE_CH(n)`, similar to how we can do with other drivers.
So instead of using:
```rust
let freq_in = InputChannel::new(
p.GPIOTE_CH0,
Input::new(&mut p.P0_19, embassy_nrf::gpio::Pull::Up),
embassy_nrf::gpiote::InputChannelPolarity::HiToLo,
);
```
we can use:
```rust
let freq_in = InputChannel::new(
&mut p.GPIOTE_CH0,
Input::new(&mut p.P0_19, embassy_nrf::gpio::Pull::Up),
embassy_nrf::gpiote::InputChannelPolarity::HiToLo,
);
```
959: Generic, executor-agnostic queue implementation r=ivmarkov a=ivmarkov
Hopefully relatively well documented.
Implementation relies on a fixed-size `SortedLinkedList` from `heapless`. (By default, for up to 128 timer schedules, but we can lower this number to - say - 64.)
As discussed earlier, on queue overflow, the `WakerRegistration` approach is utilized, whereas the waker that is ordered first in the queue is awoken to make room for the incoming one (which might be the waker that would be awoken after all!). Wakers are compared with `Waker::will_wake`, so the queue should actually not fill up that easily, if at all.
I've left provisions for the user to manually instantiate the queue using a dedicated macro - `generic_queue!` so that users willing to adjust the queue size, or users (like me) who have to use the queue in a complex "on-top-of-RTOS-but-the-timer-driver-calling-back-from-ISR" scenario can customize the mutex that protects the queue.
The one thing I'm not completely happy with is the need to call `{ embassy_time::queue::initialize() }` early on before any futures using embassy-time are polled, which is currently on the shoulders of the user. I'm open to any ideas where we can get rid of this and do it on the first call to `_embassy_time_schedule_wake`, without introducing very complex combinations of critical sections, atomics and whatnot.
Co-authored-by: ivmarkov <ivan.markov@gmail.com>
Co-authored-by: Dario Nieuwenhuis <dirbaio@dirbaio.net>
