Creating calc record in Python softioc

[Paul Nord via Tech-talk <tech-talk@aps.anl.gov>]

According to the documentation, this should work:

#!/usr/local/epics/modules/pythonIoc/pythonIoc
from softioc import softioc, builder
builder.SetDeviceName('XX')
rec = builder.aIn('VALUE')
calc = builder.records.calc('CALC', CALC = 'A*B', A = rec, B = 42)
rec.FLNK = builder.PP(calc)

It chokes when assigning rec to input A.

  File "/usr/local/epics/modules/epicsdbbuilder/epicsdbbuilder/recordbase.py", line 190, in __ValidateField

    self._validate.ValidFieldValue(fieldname, str(value))

  File "/usr/local/epics/modules/epicsdbbuilder/epicsdbbuilder/dbd.py", line 111, in ValidFieldValue

    'Can\'t write "%s" to field %s: %s' % (value, name, message)

AssertionError: Can't write "XX:VALUE" to field A: not a number

Does anyone have a working example of using a calc record in python softioc?

Paul