We have a feature that isn't fully implemented or tested called
--one_device.

The idea is that only one device is on that bus, so after the initial
discovery, much faster techniques can be used to access the slave. UIsing
that an a dedicated bus master for each rpm sensor could get you near your
goal.

Paul Alfille

On Mon, Dec 29, 2008 at 3:02 AM, Jaap Struyk <[email protected]> wrote:

> Matthias Urlichs schreef:
>
> > You'll need to put the RPM sensors onto a different bus.
> >
> >> So I like to poll those 2 sensors (counters DS2423) every 10ms.
> >>
> > 10ms is very ambitious.
>
> That is why I bought a HUB at first instance, unfortunately it was
> broken on arrival, the plan was to use one bus for temps. and both
> counters on separate ones so every counter had it's own bus. (even then
> 10ms. is tricky, I know)
> I have no clue if 10ms. should be fast enough to prevent damage, maybe
> it's way to slow but maybe 100ms. is also fast enough as response time.
> Time will learn...
>
> There are a lot of things I am not certain about, but whatever happens
> owfs is very capable of logging my temps. so that is my primary goal,
> the fun part of the 1-wire stuff is that it is extendible so I start
> with temps. only and work my way up until I am satisfied or until I
> reach the limits.
>
> Whatever happens it would be fun to stand aside the track with a laptop,
> login into our own (moving) wlan-ap on the tractor and read the temp.
> stuff online, so every step above this will only add extra fun!
>
>
>
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