def add_attribute(aname, rw=READ, tp=DevString, query='auto', extra=None):
'''Adds a scalar attribute.
If no read function is defined, create_rfun() will be used to generate
a suitable default.
'''
extra = PS.get_attr_extra(aname, extra)
rfun_name = 'read_' + aname
CLASS.attr_list[aname] = [[tp, SCALAR, rw], extra]
if not hasattr(DEVICE, rfun_name):
# creates generic read function
rfun = create_rfun(aname, query=query)
setattr(DEVICE, rfun_name, rfun)
def add_attribute(aname, rw=READ, tp=DevString, query='auto',
extra=None):
'''Adds a scalar attribute.
If no read function is defined, create_rfun() will be used to generate
a suitable default.
'''
extra = PS.get_attr_extra(aname, extra)
rfun_name = 'read_'+aname
CLASS.attr_list[aname] = [[tp, SCALAR, rw] , extra ]
if not hasattr(DEVICE, rfun_name):
# creates generic read function
rfun = create_rfun(aname, query=query)
setattr(DEVICE, rfun_name, rfun)
def add_ec_attr(aname,
mnemonic=None,
rw=READ,
tp=DevDouble,
extra=None,
qconv=None,
wconv=None,
query='auto'):
'''Adds a scalars attribute to the server that roughly corresponds
to a mnemonic being read or written.
If no read_XYZ function exists, one will be created by create_rfun().
Likewise, if no query_XYZ functions exists, one will be created.
'''
extra = PS.get_attr_extra(aname, extra)
rfun_name = 'read_' + aname
qfun_name = 'query_' + aname
if mnemonic is None and not hasattr(DEVICE, qfun_name):
msg = "neither mnemonic given to add_ec_attr %s nor query method defined" % (
aname, )
raise Exception(msg)
CLASS.attr_list[aname] = [[tp, SCALAR, rw], extra]
if not hasattr(DEVICE, rfun_name):
rfun = create_rfun(aname, query=query)
setattr(DEVICE, rfun_name, rfun)
if not hasattr(DEVICE, qfun_name):
if qconv is None:
qconv = CONVERT[tp]
qfun = create_ec_qfun(mnemonic, conv=qconv)
setattr(DEVICE, qfun_name, qfun)
if rw == READ: return
wfun_name = 'write_' + aname
if not hasattr(DEVICE, wfun_name):
if wconv is None:
wconv = CONVERT_WRITE.get(tp, str)
wfun = create_ec_wfun(mnemonic, conv=wconv)
setattr(DEVICE, wfun_name, wfun)
def add_ec_attr(
aname, mnemonic=None, rw=READ, tp=DevDouble,
extra=None,
qconv=None,
wconv=None,
query='auto'
):
'''Adds a scalars attribute to the server that roughly corresponds
to a mnemonic being read or written.
If no read_XYZ function exists, one will be created by create_rfun().
Likewise, if no query_XYZ functions exists, one will be created.
'''
extra = PS.get_attr_extra(aname, extra)
rfun_name = 'read_'+aname
qfun_name = 'query_'+aname
if mnemonic is None and not hasattr(DEVICE, qfun_name):
msg = "neither mnemonic given to add_ec_attr %s nor query method defined" % (aname,)
raise Exception(msg)
CLASS.attr_list[aname] = [[tp, SCALAR, rw] , extra ]
if not hasattr(DEVICE, rfun_name):
rfun = create_rfun(aname, query=query)
setattr(DEVICE, rfun_name, rfun)
if not hasattr(DEVICE, qfun_name):
if qconv is None:
qconv = CONVERT[tp]
qfun = create_ec_qfun(mnemonic, conv=qconv)
setattr(DEVICE, qfun_name, qfun)
if rw==READ: return
wfun_name = 'write_'+aname
if not hasattr(DEVICE, wfun_name):
if wconv is None:
wconv = CONVERT_WRITE.get(tp,str)
wfun = create_ec_wfun(mnemonic, conv=wconv)
setattr(DEVICE, wfun_name, wfun)
