On 05/11/12 02:30, Paul Alfille wrote:
> Ok, after some work, I think I have rudimentary support for the DS2483 in
> the next release.
>
> 1. There are 4 i2c adaptors, the DS2482-100 DS2482-101 DS2482-800 and the
> DS2483.
> 2. The DS2482-100 and DS2482-101 seem to be indistinguishable via software
> (except the '101 can only be assigned to a subset of the '100 i2c
> addresses).
> 3. The '800 is distinguished by trying to assign a channel -- only the '800
> has multiple channels.
> 4. The DS2483 has an additional register for configuration, but I don't
> have a test bed to see if I can distinguish it using the i2c library.
> 5. The newer version will have some debug code added so that we can see if
> the newest chip responds differently.
> 6. The PPM -- pulse presence mask bit seen on onlder versions of the
> datasheep for the DS2482-xxx chips is the same as the PDN -- powerdown for
> the DS2483.
> 7. A device reset seems to put all the chips in working mode, so that's the
> quick fix.
>

Paul,

Happy to test DS2483 support.

Stuart

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