The TriggeredCamExposure device returns a NullStatus, which
communicates back to the RunEngine that the set operation finished
immediately. This is not accurate: setting the exposure takes a small
but sometimes significant amount of time.
In this PR, we use the fact that Status object can be logically "AND-ed"
to report when all status objects in a set are complete. Example:
In [23]: st = NullStatus()
In [24]: st2 = StatusBase()
In [25]: st3 = StatusBase()
In [26]: st &= st2
In [27]: st &= st3
In [28]: st.done
Out[28]: False
In [29]: st2._finished()
In [30]: st.done
Out[30]: False
In [31]: st3._finished()
In [32]: st.done
Out[32]: True
Fixes https://github.com/NSLS-II-CSX/xf23id1_profiles/issues/17
The
TriggeredCamExposuredevice returns aNullStatus, which communicates back to the RunEngine that the set operation finished immediately. This is not accurate: setting the exposure takes a small but sometimes significant amount of time.In this PR, we use the fact that Status object can be logically "AND-ed" to report when all status objects in a set are complete. Example: