utility

Utility functions for the instrument coordinator and components.

Module Contents

Functions

search_settable_param(...)	Searches for a settable parameter in nested instrument hierarchies.
parameter_value_same_as_cache(→ bool)	Returns whether the value of a QCoDeS parameter is the same as the value in cache.
lazy_set(→ None)	Set the value of a QCoDeS parameter only if it is different from the value in cache.
check_already_existing_acquisition(→ None)	Verifies non-overlapping data in new_dataset and current_dataset.

Attributes

logger

logger

search_settable_param(instrument: qcodes.instrument.base.InstrumentBase, nested_parameter_name: str) → qcodes.parameters.parameter.Parameter

Searches for a settable parameter in nested instrument hierarchies.

For example instrument.submodule_1.channel_1.parameter.

Parameters:

• instrument – The root QCoDeS instrument where the parameter resides.

• nested_parameter_name – Hierarchical nested parameter name.

Return type:

Parameter

parameter_value_same_as_cache(instrument: qcodes.instrument.base.InstrumentBase, parameter_name: str, val: object) → bool

Returns whether the value of a QCoDeS parameter is the same as the value in cache.

Parameters:

• instrument – The QCoDeS instrument to set the parameter on.

• parameter_name – Name of the parameter to set.

• val – Value to set it to.

Return type:

bool

lazy_set(instrument: qcodes.instrument.base.InstrumentBase, parameter_name: str, val: object) → None

Set the value of a QCoDeS parameter only if it is different from the value in cache.

Parameters:

• instrument – The QCoDeS instrument to set the parameter on.

• parameter_name – Name of the parameter to set.

• val – Value to set it to.

check_already_existing_acquisition(new_dataset: xarray.Dataset, current_dataset: xarray.Dataset) → None

Verifies non-overlapping data in new_dataset and current_dataset.

If there is, it will raise an error.

Parameters:

• new_dataset – New dataset.

• current_dataset – Current dataset.