Crankshaft Position
The crankshaft input drives primary trigger decoding. First select the exact trigger pattern or enter the correct custom tooth and gap counts; an incompatible pattern cannot be repaired by edge inversion or timing offset. Assign a board-supported event input as the primary channel and use the secondary channel only when the selected pattern requires it. Start with the hardware-conditioned input intended for crank VR or Hall signals.
The capture layer accepts both signal edges and applies Invert Primary in software after capture. Set inversion from the observed waveform and decoder behavior, not by guessing from sensor color codes. Verify the sensor supply, ground, pull-up/down, and input conditioning against the board revision; do not infer input voltage tolerance from the microcontroller alone.
During initial cranking or bench rotation, watch the crank teeth in the engine sniffer. Use trigger_details for synchronization messages and triggerinfo to inspect sync state, expected-tooth errors, and ordering errors. A repeating edge trace without valid sync is not proof that the wheel definition is usable. Only after stable sync and RPM should you use fixed timing and a timing light to set global trigger angle offset. Ensure the commanded timing matches the strobe through the intended range.
Core8 names four VR/Hall event inputs E2-E5, plus digital event inputs; Atlas names two VR and six digital event inputs. Counts and names are target-specific, and a pin may already be reserved by the trigger configuration. Recheck the generated INI and connector for the installed board revision before changing wiring.