Time-Slicing in SYS/BIOS

Daniel Castagnola Weckesser

Is it possible to implement time-slicing in SYS/BIOS, in order to run several same-priority tasks pseudo simultaneously, without writing collaborative code ?

Thanks,

Daniel

over 12 years ago

0 Yokoyama, Atsushi over 12 years ago

TI__Expert 7180 points

Hi Daniel,

I guess some BIOS experts will reply, but the following is my own trivial idea...

Can we dynamically raise and lower priority of a task among the task group in a round-robin fashion?

For example, we create an SWI or an HWI which periodically runs and it assigns dynamic priorities among the tasks. I don't know if it actually works but I want to try when I have time.

Best Regards,
Atsushi

0 Alan DeMars over 12 years ago in reply to Yokoyama, Atsushi

TI__Mastermind 30830 points

Daniel,

The "slice" example shown in section the 3.5.6 of the BIOS User's Guide would be a good place for you to start:

http://www.ti.com/lit/pdf/spruex3

With the addition of a call to Task_self() and a switch() statement within the clockHandler1() function you could conditionally call Task_yield() based on the slice duration you want to give to each task.

Alan

0 Daniel Castagnola Weckesser over 12 years ago in reply to Alan DeMars

Intellectual 410 points

Solved.

Thanks

Processors

Processors forum

Time-Slicing in SYS/BIOS