User`s guide

Idle Task

Purpose Create free-running task

Library Cxxxx DSP Chip Support in Embedded IDE Link CC

Description TheIdleTaskblock,andthesubsystem connected to it, specify one

or more functions to execute as background tasks. All tasks executed

through the Idle Task block are of the lowest priority, lower than that of

the base rate task.

Vectorized Output

The b lock output comprises a set of vectors—the task numbers

vector and the preemption ﬂag or ﬂags vector. Any preemptio n-ﬂag

vector must be the same length as the number of tasks vector unless

the preemption ﬂag vector has only one element. The value of the

preemption ﬂag determines whether a give n interrupt (and task) is

preemptible. Preemption overrides prioritizatio n. A low er-priority

nonpreemptible task can preempt a highe r-priority preemptibl e task.

When the preemption ﬂag vector has one element, that element value

applies to all functions in the downstream subsystem as deﬁned by the

task numbers in the task number vector. If the preemption ﬂag vector

has the same number of elements as the task number vector, each task

deﬁned in the task number vector has a preemption status deﬁned by

the value of the corresponding eleme nt in the preemption ﬂag vector.

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