1025: Implement I2C timeouts, second attempt r=Dirbaio a=chemicstry
This is an alterrnative to #1022 as discussed there.
Timeouts are implemented using suggested `check_timeout: impl Fn() -> Result<(), Error>` function, which does not depend on `embassy-time` by default and is a noop for regular I2C.
This also adds `time` feature like in `embassy-nrf` to enable `embassy-time` dependencies. While at it, I also gated some other peripherals that depend on `embassy-time`, notably `usb` and (partially) `subghz`.
`TimeoutI2c` is currently only implemented for i2cv1, because i2cv2 has additional complications:
- Async methods still use a lot of busy waiting code in between DMA transfers, so simple `with_timeout()` will not work and it will have to use both types of timeouts. It could probably be rewritten to replace busy waits with IRQs, but that's outside the scope of this PR.
- I2C definition `I2c<'d, T, TXDMA, RXDMA>` is different from i2cv1 `I2c<'d, T>` making it hard to share single `TimeoutI2c` wrapper. A couple of options here:
- Duplicate `TimeoutI2c` code
- Add dummy `TXDMA`, `RXDMA` types to i2cv1 considering that in the future it should also support DMA
Co-authored-by: chemicstry <chemicstry@gmail.com>
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>
1031: stm32: Add support for read_until_idle on UART - rebase r=Dirbaio a=Dirbaio
`@guillaume-michel` I rebased #1011 for you and then noticed you don't have the "allowed maintainers to push" option so I had to open a new PR.
bors r+
Co-authored-by: Guillaume MICHEL <guillaume@squaremind.io>
855: PDM microphone support for nrf r=Dirbaio a=pbert519
PDM microphones have a long startup phase, therefore the driver samples continuously and only switches the target buffer if the user requests sampling.
Co-authored-by: pbert <pbert@posteo.net>
1021: rp usb: wait for accept() completion r=Dirbaio a=mkj
This fixes failures when `defmt` feature isn't enabled (timing related).
Co-authored-by: Matt Johnston <matt@ucc.asn.au>
This ensures that the current response has finished being sent
before the subsequent set_address() happens. Otherwise connecting
a device is intermittent, can fail depending on timing.
1014: Add memory barriers to H7 flash driver to mitigate PGSERR errors r=lulf a=matoushybl
The stm32h7xx-hal uses only the ordering barrier, while the CubeMX uses the DSB and ISB instructions, to be on the safe side, both are used here.
Without the barrier, the PG bit is not set, when the writes are being done, resulting in an error.
Co-authored-by: Matous Hybl <hyblmatous@gmail.com>
1012: rp i2c: have separate wakers for each i2c unit r=Dirbaio a=jsgf
If they both share one waker, there's the possibility that some wakeups could get lost.
Co-authored-by: Jeremy Fitzhardinge <jeremy@goop.org>
