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added sampling frequency setting to adc capture methods on rp2040
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convenience methods
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refactored to split modules
renamed to match upstream docs
slight improvement to slave error handling
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Move i2c to mod, split device and controller
Remove mode generic:
I don't think it's reasonable to use the i2c in device mode while
blocking, so I'm cutting the generic.
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Refactor Channel/Sender/Receiver poll methods
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- Needed for consistency with other drivers.
- Having two `new()` functions sometimes resulted in 'multiple applicable methods' errors.
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GP29 is connected to the cyw43 SCK pin. cyw43 is selected by
default (due to rp2040 pins being input/pulldown by default), so the
wifi chip is always selected and watches the SCK pin. this little bit of
load on the SCK pin is enough to disturb the 300k voltage divider used
for VSYS sensing, making the test flaky.
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with uniform treatment of adc inputs it's easy enough to add a new
sampling method. dma sampling only supports one channel at the moment,
though round-robin sampling would be a simple extension (probably a new
trait that's implemented for Channel and &[Channel]). continuous dma as
proposed in #1608 also isn't done here, we'd expect that to be a
compound dma::Channel that internally splits a buffer in half and
dispatches callbacks or something like that.
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this lets us treat pins and the temperature sensor uniformly using the
same interface. uniformity in turn lets us add more adc features without
combinatorial explosion of methods and types needed to handle them all.
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rp: add async flash
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Implement an async flash mode using the XIP background best effort
read interface. Only reads are actually async, write and erase remain
blocking.
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this removed the RelocatedProgram construction step from pio uses.
there's not all that much to be said for the extra step because the
origin can be set on the input program itself, and the remaining
information exposed by RelocatedProgram can be exposed from
LoadedProgram instead (even though it's already available on the pio_asm
programs, albeit perhaps less convenient). we do lose access to the
relocated instruction iterator, but we also cannot think of anything
this iterator would actually be useful for outside of program loading.
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rp/adc: rewrite the module
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- don't require an irq binding for blocking-only adc
- abstract adc pins into an AnyPin like interface, erasing the actual
peripheral type at runtime.
- add pull-up/pull-down functions for adc pins
- add a test (mostly a copy of the example, to be honest)
- configure adc pads according to datasheet
- report conversion errors (although they seem exceedingly rare?)
- drop embedded-hal interfaces. embedded-hal channels can do neither
AnyPin nor pullup/pulldown without encoding both into the type
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closes #1338
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1423: rp: fix gpio InputFuture and inefficiencies r=pennae a=pennae
InputFuture could not wait for edges without breaking due to a broken From impl, but even if the impl had been correct it would not have worked correctly because raw edge interrupts are sticky and must be cleared from software. also replace critical sections with atomic accesses, and do nvic setup only once.
Co-authored-by: pennae <[email protected]>
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doing this setup work repeatedly, on every wait, is unnecessary. with
nothing ever disabling the interrupt it is sufficient to enable it once
during device init and never touch it again.
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forgot to remove these when they were no longer necessary or useful. oops.
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this reports errors at the same location the blocking uart would, which
works out to being mostly exact (except in the case of overruns, where
one extra character is dropped). this is actually easier than going
nuclear in the case of errors and nuking both the buffer contents and
the rx fifo, both of which are things we'd have to do in addition to
what's added here, and neither are needed for correctness.
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the rp uart receive fifo is 32 entries deep, so the 31 byte test data
fits into it without needing any buffering. extend to 48 bytes to fill
the entire fifo and the 16 byte test buffer.
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rp-hal has done this very well already, so we'll just copy their entire
impl again. only div.rs needed some massaging because our sio access
works a little differently, everything else worked as is.
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Signed-off-by: Lachezar Lechev <[email protected]>
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Signed-off-by: Lachezar Lechev <[email protected]>
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This gets rid of another PeripheralMutex usage.
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