How to suspend Tasks in SYSBIOS 6.34.2.1

Mike Geppert

Expert 1980 points

We have a mix of Dynamic and Static Tasks.

We have an operation in our system that would like to suspend the bulk of the tasks and once the operation is done we would reboot. We do need a few tasks to still run.

I found out that we can not do a Task_delete on Static Tasks.

Wondering if I can change the priority to 1 and moving the IDLE task to 2? Would that suspend all the tasks that end up below idle?

Any other ways to do the same thing?

over 12 years ago

0 Steven Connell over 12 years ago

TI__Mastermind 45025 points

Hi Mike Geppert,

There are a few APIs that I can think of.

Task_setPri() allows you to change the priority of a Task.
Task_sleep() causes a task to sleep for a given amount of time.
Task_yield() causes a task to yield to another task of equal priority.

Please refer to the SYS/BIOS API guide for the Task module for further details.

Steve

0 Mike Geppert over 12 years ago in reply to Steven Connell

Expert 1980 points

I want one task to selective stop other tasks?

How do you do that with Task_sleep or Task_yield? I thought thoes only worked on the current running task?

We do have the idle task changed to lvl 2 and have been able to change the others to 1.

But it seems kind of a strange way of doing what I wanted. Also I was hoping for confermation that nothing will be able to run below the idle task.

Thanks

0 Steven Connell over 12 years ago in reply to Mike Geppert

TI__Mastermind 45025 points

I think the Task_setPri will help you. It takes a Task handle as an argument. So you can call it from another function or Task.

Also, from the description of Task_setPri:

"newpri can also be set to -1 which puts the the task into the INACTIVE state and the task will not run until its priority is raised at a later time by another task."

Steve

0 Mike Geppert over 12 years ago in reply to Steven Connell

Expert 1980 points

OOOO I missed the -1 part. Stops me from having to mess with the IDLE task. I like!

Thanks very much!

0 Nik-Lz over 9 years ago in reply to Mike Geppert

Intellectual 350 points

Does this feature, i.e. setting the priority to -1, exist in FREERTOS as well? It's very useful indeed.

0 ToddMullanix over 9 years ago in reply to Nik-Lz

TI__Guru* 96960 points

Not sure. You might ask on a FreeRTOS forum.

Processors

Processors forum

How to suspend Tasks in SYSBIOS 6.34.2.1