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(DiamondLightSource/hyperion#796) Add feedback check for i03
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Original file line number | Diff line number | Diff line change |
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@@ -1,11 +1,27 @@ | ||
from ophyd import Component, Device, EpicsSignal, EpicsSignalRO | ||
from ophyd.status import StableSubscriptionStatus, StatusBase | ||
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class XBPMFeedback(Device): | ||
"""The XBPM feedback device is an IOC that moves the DCM, HFM and VFM to automatically | ||
hold the beam into place, as measured by the XBPM sensor.""" | ||
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# The time that the feedback needs to be high to be considered stable | ||
STABILITY_TIME = 3 | ||
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pos_ok: EpicsSignalRO = Component(EpicsSignalRO, "-EA-FDBK-01:XBPM2POSITION_OK") | ||
pause_feedback: EpicsSignal = Component(EpicsSignal, "-EA-FDBK-01:FB_PAUSE") | ||
x: EpicsSignalRO = Component(EpicsSignalRO, "-EA-XBPM-02:PosX:MeanValue_RBV") | ||
y: EpicsSignalRO = Component(EpicsSignalRO, "-EA-XBPM-02:PosY:MeanValue_RBV") | ||
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def trigger(self) -> StatusBase: | ||
status = StableSubscriptionStatus( | ||
self.pos_ok, | ||
lambda value, *args, **kwargs: value == 1, | ||
self.STABILITY_TIME, | ||
timeout=60, | ||
) | ||
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if self.pos_ok.get() == 1: | ||
status.set_finished() | ||
return status |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,33 @@ | ||
import pytest | ||
from ophyd.sim import make_fake_device | ||
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from dodal.devices.xbpm_feedback import XBPMFeedback | ||
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@pytest.fixture | ||
def fake_xbpm_feedback(): | ||
FakeXBPMFeedback = make_fake_device(XBPMFeedback) | ||
return FakeXBPMFeedback(name="xbpm") | ||
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def test_given_pos_ok_when_xbpm_feedback_kickoff_then_return_immediately( | ||
fake_xbpm_feedback: XBPMFeedback, | ||
): | ||
fake_xbpm_feedback.pos_ok.sim_put(1) | ||
status = fake_xbpm_feedback.trigger() | ||
status.wait(0.1) | ||
assert status.done and status.success | ||
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def test_given_pos_not_ok_and_goes_ok_for_stability_time_when_xbpm_feedback_kickoff_then_return_immediately( | ||
fake_xbpm_feedback: XBPMFeedback, | ||
): | ||
fake_xbpm_feedback.STABILITY_TIME = 0.1 | ||
fake_xbpm_feedback.pos_ok.sim_put(0) | ||
status = fake_xbpm_feedback.trigger() | ||
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assert not status.done | ||
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fake_xbpm_feedback.pos_ok.sim_put(1) | ||
status.wait(0.2) | ||
assert status.done and status.success |