Lpc2000

Hello,

How does Rowley's tasking library compare to FreeRTOS? Spee? foot 
print?

I am about to start a project and not sure whitch one is better!

Any thoughts from Rowley's people?

Gus

Hi Gus,

Here are speed/footprint numbers of CTL for an LPC21xx running at
60Mhz with MAM enabled.

Premptive task schedule - i.e. time to reschedule a higher priority
task after an ISR has executed.
ARM   4,468 bytes  7.48 uSecs
THUMB 3,124 bytes  8.24 uSecs

Co-operative task schedule - i.e. time to reschedule a higher priority
task due an API call from a task e.g. a semaphore signal.
ARM   3,984 bytes  5.38 uSecs
THUMB 2,848 bytes  5.44 uSecs

So you're looking at 3K/4K of code overhead.

A task stack will require at least 34 words (136 bytes) - which is a
number I hope to reduce somehow/sometime this year.

Regards
Michael

> 
> Hello,
> 
> How does Rowley's tasking library compare to FreeRTOS? Spee? foot 
> print?
> 
> I am about to start a project and not sure whitch one is better!
> 
> Any thoughts from Rowley's people?
> 
> Gus