VxWorks Task

Spawn task function as separate VxWorks thread

Add-On Required: This feature requires the Embedded Coder Support Package for ARM Cortex-A Processors add-on.

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Libraries:
Embedded Coder Support Package for ARM Cortex-A Processors

Description

Add-On Required: This feature requires the Embedded Coder Support Package for ARM Cortex-A Processors add-on.

The VxWorks Task block creates a task function that spawns as a separate VxWorks^® thread. The task function runs the code of the downstream Function-Call Subsystem block.

The VxWorks Task block uses a first-in, first-out (FIFO) scheduling algorithm, which executes real-time processes without time slicing. With FIFO scheduling, a higher-priority process preempts a lower-priority process. While the higher-priority process runs, the lower-priority process remains at the top of the list for its priority. When the scheduler blocks the higher-priority processes, the lower-priority process resumes.

Examples

Get Started with Embedded Coder Support Package for ARM Cortex-A Processors

Use Embedded Coder^® Support Package for ARM^® Cortex^®-A Processors to run a Simulink^® model on an ARM Cortex-A9 (QEMU) emulator.

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Ports

Output

Port_1 — Function-call control signal

scalar

A function-call control signal that triggers a Function-Call Subsystem block.

Parameters

To edit block parameters interactively, use the Property Inspector. From the Simulink Toolstrip, on the Simulation tab, in the Prepare gallery, select Property Inspector.

To set the block parameter value programmatically, use the set_param function.

To get the block parameter value programmatically, use the get_param function.

Task function name — Name of thread on VxWorks

'Task0' (default) | character vector

Specify a name for this task. You can enter at most 32 letters, numbers, or a combination of letters and numbers.

Programmatic Use

Block Parameter: taskName

Thread priority — Priority of the VxWorks thread

0 (default) | 0 .. 255

Specify the priority of the VxWorks thread from 0 to 255 (low-to-high). Higher-priority tasks can preempt lower-priority tasks.

Programmatic Use

Block Parameter: taskPriority

Version History

Introduced in R2014a