use provided value of trigger_value

[prjemian]

• close Provided value of trigger_value is ignored #1218

Tested identical change locally at APS as part of aps-8id-dys/bluesky#95 and aps-8id-dys/bluesky#99.

[tacaswell]

How hard would it be to add a test for this?

[prjemian]

How easy is it to create triggerable Signal that requires a testable value? test matrix should include 1, "1!" (since that is our case, and maybe some other type (maybe bool?).

[prjemian]

Probably want it to appear in the documentation, too. This is a great feature and it required some investigation to uncover this capability.

[prjemian]

Document a Device's trigger_value kwarg in a separate issue.

[prjemian]

CI failure (in one Py3.11 configuration) does not look related to this work:

/home/runner/work/_temp/351d6ed9-ee3e-433a-adbc-efc7e5388f9b.sh: line 1:  3115 Segmentation fault      (core dumped) pytest -k "${TEST_CL}"
ophyd/tests/test_areadetector.py 

[prjemian]

Kept re-running that test configuration until it passed.