def __init__(self, channel, prefix):
"""Initialize the Low Level object.
callback is the callable to be called each time a low level PV changes
its value.
"""
super().__init__()
self.channel = _PVName(channel)
self.prefix = prefix
self._dict_functs_for_write = self._define_dict_for_write()
self._dict_functs_for_update = self._define_dict_for_update()
self._dict_functs_for_read = self._define_dict_for_read()
self._dict_convert_prop2pv = self._define_convertion_prop2pv()
self._dict_convert_pv2prop = {
val: key
for key, val in self._dict_convert_prop2pv.items()
}
self._config_ok_values = dict()
self._base_freq = _RFFREQ / _RFDIV
self._writepvs = dict()
self._readpvs = dict()
self._locked = False
evg_name = _LLTimeSearch.get_evg_name()
self._base_freq_pv = _PV(LL_PREFIX + evg_name + ':FPGAClk-Cte')
self._update_base_freq()
self._base_freq_pv.add_callback(self._update_base_freq)
_log.info(self.channel + ': Creating PVs.')
for prop, pvname in self._dict_convert_prop2pv.items():
pvnamerb = pvnamesp = None
if not _PVName.is_write_pv(pvname):
pvnamerb = pvname
pvnamesp = _PVName.from_rb2sp(pvname)
elif _PVName.is_cmd_pv(pvname): # -Cmd is different!!
self._writepvs[prop] = _PV(pvname)
if pvnamerb is not None:
self._readpvs[prop] = _PV(pvnamerb)
if pvnamesp != pvnamerb and not prop.endswith('DevEnbl'):
self._writepvs[prop] = _PV(pvnamesp)
self._writepvs[prop]._initialized = False
for prop, pv in self._writepvs.items():
if not pv.wait_for_connection():
_log.info(pv.pvname + ' not connected.')
for prop, pv in self._readpvs.items():
if not pv.wait_for_connection():
_log.info(pv.pvname + ' not connected.')
for prop, pv in self._writepvs.items():
if _PVName.is_cmd_pv(pv.pvname):
continue
pv.add_callback(self._on_change_writepv)
pv.connection_callbacks.append(self._on_connection_writepv)
for prop, pv in self._readpvs.items():
pv.add_callback(self._on_change_readpv)
pv.connection_callbacks.append(self._on_connection)
def _get_pv_name(self, prop, is_sp=False):
pvname = self.prefix + prop + self._all_props_suffix[prop]
if is_sp:
pvname = _PVName.from_rb2sp(pvname)
return pvname
