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fix(current sense): check the polarity of the channel that was just relabelled - #574

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stijncarelsbergh wants to merge 1 commit into
simplefoc:devfrom
stijncarelsbergh:fix/cs-stepper
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stijncarelsbergh wants to merge 1 commit into
simplefoc:devfrom
stijncarelsbergh:fix/cs-stepper

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fix(current sense): check the polarity of the channel that was just relabelled

Same defect as the BLDC alignment: when the stepper alignment decides that the
measured phase A is on the other ADC channel, it swaps the pins/offsets/gains but
not the samples, so the following if (c.a < 0) tests the sample of the channel
that is not carrying the current (and that reads ~0). The phase A gain ends up
with the wrong sign for exactly the wiring the routine is meant to correct.


Split out of #571 at your request: one fix per PR, against dev. The branch contains
nothing else, so it can be reviewed, amended or dropped on its own.

The CI board matrix runs automatically; I did not run any hardware test, so the behavioural
claims are from reading the code plus the compiler. Happy to adjust the wording, split it
differently or drop it - no attachment to this one.

…elabelled

Same defect as the BLDC alignment: when the stepper alignment decides that the
measured phase A is on the other ADC channel, it swaps the pins/offsets/gains but
not the samples, so the following `if (c.a < 0)` tests the sample of the channel
that is *not* carrying the current (and that reads ~0). The phase A gain ends up
with the wrong sign for exactly the wiring the routine is meant to correct.
Copilot AI balanced review requested due to automatic review settings October 7, 2026 22:05

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