Changing a pin seems much slower. I'll post the data tomorrow. I think that is
intrinsic to the chip.
PIO.ALL should be no slower than PIO.A, actually faster since it is the atomic
operation and changing just one pin involves reading that state of all, then
changing the requested bit and writing them back.
Paul
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Jan
Kandziora
Sent: Friday, June 17, 2005 8:37 AM
To: owfs-developers@lists.sourceforge.net
Subject: Re: [Owfs-developers] Performance
Am Mittwoch, 15. Juni 2005 04:57 schrieb Paul Alfille:
> I've written up my testing of OWFS performance.
>
Great. Many thanks for the data, Paul.
If I understand correctly, it cost about 20ms to check if a device is present
on the bus (list process). Does it have the same cost to read or change a PIO
pin (or another operation) on an already "known" device? How is it with
changing a couple of things on the same device simultaneously (PIO.ALL)?
Kind regards
Jan
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