Re: [uClinux-dev] Serial ports and real time

Emmanuel Viollet Thu, 28 May 2009 03:07:39 -0700

Erwin Authried a écrit :

Am Donnerstag, den 28.05.2009, 11:09 +0200 schrieb Emmanuel Viollet:

Hi.


Thanks for the answer.

I tried "setserial /dev/ttyS1 low_latency" before launching my program, 
but I didn't notice any difference.
I still have at least 20 ms latency before AND after transmission.

Is the syntax correct? Am I using the command correctly? Am I supposed 
to add something to my program in order to benefit from the low latency ?

Regards,

yes, that looks correct. It shouldn't be necessary to add anything in
your application. Have you verified that your serial IRQ is working?

Nope. Not yet.
I'll be checking that this afternoon.

Thanks for the help. I was hoping for some kind of magic function that would solve my problems, but apparently there isn't any... ;)

Regards,

-- 
Emmanuel Viollet
Software engineer
Webdyn
e-mail : [email protected]
Tel    : +33 (0)1 39 04 29 55

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Re: [uClinux-dev] Serial ports and real time

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