device_manager Package

High level overview

Conctete subclasses of IDeviceManager() represent a silf.backend.commons.device._device.Device to the ExperimentManager(), it has following responsibilities:

• Manage modes of the Device
• Store and return metadata that enables construction of experiment GUI
• Aggregate and modify resuts from the Device to and return modivied results to the user.
• Optionally separate Device inside its own subprocess.

Mode management

DeviceManager is aware of current mode as it gets it as a parameter for IDeviceManager.power_up() method.

Moreover methods that return metadata, also get mode as a parameter, in this case it means: “Get metadata for appripriate mode”.

Metadata management

Each DeviceManager should describe input fields it needs for particular mode. These input fields are returned from IDeviceManager.get_input_fields(). Output fielfs are retuned from IDeviceManager.get_output_fields().

Default DeviceManager implementations allow to define metadata declaratively: see: DefaultDeviceManager and SingleModeDeviceManager.

Result aggregation

All DeviceManager concrete implementation derive from ResultMixin that provides sensible way to aggregate results.

Basic device manager classes

Series manager

This package contains contains device managers for one use-case, we want student to capture series of points, and device is able to capture only single point at a time.