TaskLoad

Description

The TaskLoad module describes a load that runs several tasks in a round-robin fashion (see Figure below). The tasks, their length, as well as their power consumption can be configured arbitrarily. As they can be modelled as fine-grained as required, the TaskLoad module allows to cover a wide range of different sensor node applications. The load further has a minimum operating voltage that is implemented as a hysteresis.

Parameters

Parameter	man./opt.	Value	Description
tasks	m	List of tasks	List of tasks that should be executed in round-robin fashion, using the following format:
skip_initial_task	o	Integer (0...NumTasks)	Define whether the first n tasks in the list should be skipped in the round-robin scheduling (i.e., only execute them once after re-boot) (Default: 0)
v_on	m	Voltage in V	Min. operating voltage (turn-on threshold)
v_off	m	Voltage in V	Min. operating voltage (turn-off threshold)
i_off	m	Current in A	Current consumption if load is turned off
shutdown_after_completion	o	Boolean	Define whether device should turn itself off (i.e., instruct the converter to disable the supply voltage) after all tasks are completed (Default: False)
log	o	Boolean	Define whether normal logging (i.e., only if any state change happens) is enabled (Default: False)
verbose_log	o	Boolean	Define whether verbose logging (i.e., at each update call) is enabled (Default: False, can be enabled for smooth plotting)

Example configuration(s)

load_config = {
    'type' : 'TaskLoad',
    'settings' : { 'tasks' : [{'name': 'INIT',  't' : 2e-3,   'i': 600e-6},
                              {'name': 'TASK1', 't' : 10e-3,  'i': 2000e-6},
                              {'name': 'TASK2', 't' : 100e-3, 'i': 500e-6}],
                    'skip_initial_task' : 1,
                    'v_on' : 1.9,
                    'v_off' : 1.8,
                    'i_off' : 1e-6,
                    'log' : True}
    }