Jacob Dahl 543851db50
[Sponsored by ARK] Bidirectional DShot (#23863)
* Bidirectional DShot

Co-authored-by: Julian Oes <julian@oes.ch>

* f4/f1 support, not supported

* fix f1 build target

* sanity check timer_channel value, fix CCxNP ifdef, debug stuff

* removed debug code, added define for H7 HAVE_GTIM_CCXNP

* round robin sampling for less than 4 DMA

* unlimited esc_status logging

* dshot: fix formatting

* dshot: add define for number of DMA channels to use

This allows individual boards to override the number of DShot channels
and hence avoid round robin capture of the RPM feedback.

* ARK: enable 4 DMA channels for DShot on 6X

* dshot: publish when all channels are updated

This slows down the ESC_STATUS publication in the case of round robin
capture. E.g. for 800 Hz output with one DMA channel, the ESC_STATUS is
now published at 200 Hz.

* dshot: avoid duplicate publications for bidir and telem

Instead of publishing both bidirectional dshot updates as well as
telemetry updates, we now combine the data from both streams, and
publish whenever we get RPM updates, as the latter arrives with higher
rate, e.g. 200 Hz with round robin, or faster otherwise.

When combining the data, we take RPM from bidirectional dshot, and the
rest from telemetry.

When we have only one of the two, either telemetry or bidirectional
dshot, we just publish that one.

* boards: add ark fpv and pi6x BOARD_DMA_NUM_DSHOT_CHANNELS

* dshot: turn off debug build

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Co-authored-by: Julian Oes <julian@oes.ch>
Co-authored-by: alexklimaj <alex@arkelectron.com>
2025-03-12 12:55:15 -06:00
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