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PT1 low pass filter clean up + fixes#11571

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breadoven wants to merge 4 commits into
iNavFlight:maintenance-9.xfrom
breadoven:abo_pt1filter_cleanup
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PT1 low pass filter clean up + fixes#11571
breadoven wants to merge 4 commits into
iNavFlight:maintenance-9.xfrom
breadoven:abo_pt1filter_cleanup

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@breadoven
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@breadoven breadoven commented May 19, 2026

Intended to simplify and clean up the PT1 low pass filter code including some fixes found. Changes as follows:

  1. pt1FilterInitRC removed since it's rarely used and tau can be set using pt1FilterSetTimeConstant instead if need be.
  2. pt1FilterApply4 removed with functionality achieved with pt1FilterApply3 instead usingpt1FilterSetCutoff to set filter->RC usually only once at initialisation.

HITL tested and some testing on a quad without problems but more testing needed.

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github-actions Bot commented May 19, 2026

Test firmware build ready — commit dcc404e

Download firmware for PR #11571

234 targets built. Find your board's .hex file by name on that page (e.g. MATEKF405SE.hex). Files are individually downloadable — no GitHub login required.

Development build for testing only. Use Full Chip Erase when flashing.

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