[BSABuffer] - BSABuffer object throws an error on initialization sometimes

[Ryan-McClanahan]

BSABuffer object throughs an error on initialization sometimes. My script initializes and uses the buffer several times before the error is thrown. I have not encountered the error on dev.

My code that the error traces back too:

    bsa_acq = BSABuffer(
        "BSSS diag",
        user="timing team",
    )

Full error:

/usr/local/lcls/package/anaconda/envs/python3.12envs/rhel7/v1.0/lib/python3.12/site-packages/epics/ca.py:1627: UserWarning: ca.get('BSA:SYS0:1:32:AVGCNT') timed out after 5.00 seconds.
  warnings.warn(msg % (name(chid), timeout))
Traceback (most recent call last):
  File "/usr/local/lcls/tools/script/release/TpgScripts/bsss_diag/bsss_diag/bsss_diag.py", line 108, in <module>
    bsss_diag()
  File "/usr/local/lcls/tools/script/release/TpgScripts/bsss_diag/bsss_diag/bsss_diag.py", line 83, in bsss_diag
    bsa_acq = config_buffer()
              ^^^^^^^^^^^^^^^
  File "/usr/local/lcls/tools/script/release/TpgScripts/bsss_diag/bsss_diag/bsss_diag.py", line 17, in config_buffer
    bsa_acq = BSABuffer(
              ^^^^^^^^^^
  File "/usr/local/lcls/package/anaconda/envs/python3.12envs/rhel7/v1.0/lib/python3.12/site-packages/edef/sc_buffer.py", line 42, in __init__
    self.n_avg = avg
    ^^^^^^^^^^
  File "/usr/local/lcls/package/anaconda/envs/python3.12envs/rhel7/v1.0/lib/python3.12/site-packages/edef/sc_buffer.py", line 149, in n_avg
    lopr = self.n_avg_pv.get_ctrlvars()['lower_ctrl_limit']
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^
TypeError: 'NoneType' object is not subscriptable
[softegr@lcls-srv01 bsss_diag]$