def caget_async(pvname):
try:
pv = Pv(pvname)
pv.get_done = threading.Event()
pv.connect_cb = lambda isconn: __connect_callback(pv, isconn)
pv.getevt_cb = lambda e=None: __get_callback(pv, e)
pv.connect(-1)
return pv
except pyca.pyexc, e:
print 'pyca exception: %s' % (e)
return None
def connectPv(name, timeout=-1.0):
try:
pv = Pv(name)
if timeout < 0:
pv.connect_cb = lambda isconn: __connect_callback(pv, isconn)
pv.connect(timeout)
else:
pv.connect(timeout)
pv.get(False, timeout)
return pv
except:
return None
