children

Sub-tasks that serve as children to other tasks.

Note

The Child agent will be formalized in an upcoming release, until then these classes remain relatively undocumented as their design will likely change.

Classes:

Wheel_Child([stage_block, fs, thresh])
Video_Child([cams, stage_block, start_now])	Parameters cams (dict, list) –
Transformer(transform, operation[, …])	Parameters transform

class Wheel_Child(stage_block=None, fs=10, thresh=100, **kwargs)

Bases: object

Attributes:

STAGE_NAMES
PARAMS
HARDWARE

Methods:

noop()
end()

STAGE_NAMES = ['collect']

PARAMS = {'fs': {'tag': 'Velocity Reporting Rate (Hz)', 'type': 'int'}, 'thresh': {'tag': 'Distance Threshold', 'type': 'int'}}

HARDWARE = {'OUTPUT': <class 'autopilot.hardware.gpio.Digital_Out'>, 'WHEEL': <class 'autopilot.hardware.usb.Wheel'>}

noop()

end()

class Video_Child(cams=None, stage_block=None, start_now=True, **kwargs)

Bases: object

Parameters

cams (dict, list) –

Should be a dictionary of camera parameters or a list of dicts. Dicts should have, at least:

{
    'type': 'string_of_camera_class',
    'name': 'name_of_camera_in_task',
    'param1': 'first_param'
}

Attributes:

PARAMS

Methods:

start()
stop()
noop()

PARAMS = {'cams': {'tag': 'Dictionary of camera params, or list of dicts', 'type': ('dict', 'list')}}

start()

stop()

noop()

class Transformer(transform, operation: str = 'trigger', return_id='T', return_key=None, stage_block=None, value_subset=None, **kwargs)

Bases: object

Parameters

• transform

• operation (str) – either

  • “trigger”, where the last transform is a Condition

  and a trigger is returned to sender only when the return value of the transformation changes, or * “stream”, where each result of the transformation is returned to sender

• return_id

• stage_block

• value_subset (str) – Optional - subset a value from from a dict/list sent to l_process()

• **kwargs

Methods:

noop()
l_process(value)

noop()

l_process(value)