502d0f152a
second approach, better fitting what was agreed upon so far. - pv_names are local to SEC-node, so not exporting via json and marking them 'private' - 2 devices for 2 temperature control loops, not one 'monster' device which handles everything. - read_status implemented - write_target also updates the status (may be sensible to go to the core?) - provide working stubs in case epics is not installed (-> testing possible) - tested with the stubs. - tests with real epics. found problems: in EpicsTempCtrl(EpicsDriveable) the read/write_<paramname> methods from EpicsDriveable needed to be reimplemented. This should not be needed! Change-Id: I9e4eeaff83114131d117c8f04fba758dfe22237b