def _discover_from_instrument(cls, parent: Instrument,
**kwargs) -> List[Dict[Any, Any]]:
"""
New channels need `name` and `channel` keyword arguments.
"""
channels_str = parent.channel_catalog()
channels_to_skip = kwargs.get("channels_to_skip", []) # Note that
# `channels_to_skip` is an optional kwarg for loading from instrument.
# We test this by giving this keyword during the initialization of the
# AutoLoadableChannelList.
kwarg_list = []
for channel_str in channels_str.split(","):
if channel_str in channels_to_skip:
continue
channel = int(channel_str)
greeting = parent.ask(f":INST:CHN{channel}:GRT")
new_kwargs = {
"name": f"channel{channel}",
"channel": channel,
"greeting": greeting
}
kwarg_list.append(new_kwargs)
return kwarg_list
def _get_new_instance_kwargs(cls,
parent: Instrument = None,
**kwargs) -> dict:
"""
Find the smallest channel number not yet occupied. An optional keyword
`greeting` is extracted from the kwargs. The default is "Hello"
"""
channels_str = parent.channel_catalog()
existing_channels = [int(i) for i in channels_str.split(",")]
new_channel = 1
while new_channel in existing_channels:
new_channel += 1
new_kwargs = {
"name": f"channel{new_channel}",
"channel": new_channel,
"greeting": kwargs.get("greeting", "Hello")
}
return new_kwargs