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Re: Question about updating an old eCos driver


On Tue, Jan 30, 2007 at 02:22:32PM +0100, Emmanuel.Coullien@faiveleytransport.com wrote:
> 
> Hi,
> 
> 3 years ago, we developped a CAN Driver for our board using an old eCosPRO
> (2.032).
> Then we had some interrupt problems and now, we want to use the last eCos
> to test if the interrupt problem exist yet.
> I made some tests and I have an other big problems which is the call time
> of the POSIX read function:
> With the old eCosPRO, it tooks 25?s and with the eCos from last week, it
> tooks 200?s for the same call read function. And so the DSR takes too many
> time to be executed.

Are you calling read() inside the DSR?

> This let me think that eCosPRO (1.032) and this ecos kernels are very
> different.

Only eCosCentric can answer that, but i suspect there are no major
differences between the "closed source" eCoscentric kernel and the
open source anoncvs code.

     Andrew


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