Environment Variables

OPHYD_ASYNC_PRESERVE_DETECTOR_STATE

Controls the implicit prepare performed by StandardDetector.trigger() when prepare() has not been called since the last stage().

Value	Behaviour
YES	Calls DetectorTriggerLogic.default_trigger_info() to read current hardware state before the implicit prepare. Raises RuntimeError if default_trigger_info() is not implemented on the trigger logic.
anything else (default)	Uses a bare TriggerInfo(), resetting detector state to defaults.

See ADR 0013 for rationale.