def __init__(self,
default_timeout=5,
device_prefix=None,
default_wait_time=1.0):
"""
Initializes this ChannelAccess object.
Args:
device_prefix: The device prefix which will be added to the start of all pvs.
default_timeout: The default time out to wait for an assertion on a PV to become true.
default_wait_time: The default time to wait after a set_pv_value
Returns:
None.
"""
self.ca = CaChannelWrapper()
self.default_wait_time = default_wait_time
# Silence CA errors
CaChannelWrapper.errorLogFunc = lambda *a, **kw: None
try:
hcom = ctypes.cdll.LoadLibrary("COM.DLL")
hcom.eltc(ctypes.c_int(0))
except Exception as e:
print("Unable to disable CA errors: ", e)
self.prefix = os.environ["testing_prefix"]
self._default_timeout = default_timeout
if not self.prefix.endswith(':'):
self.prefix += ':'
if device_prefix is not None:
self.prefix += "{}:".format(device_prefix)
