Aggreed.
I think Louis Swart's technique (at least as expressed in the LCD
datasheet) is that
FF.0001XXXXXXXX is LCD
So there are 64 bits
- 8 bits CRC8
- 8 bits family code (FF)
-16 bits 0001 subtype
----------------------------
= 32 bits for the particular device (>4000000000 unique devices)
That also allows 2^16 potential subtypes (>64000)
As far as OWFS is concerned, this is extremely easy to implement.
Paul Alfille
On Fri, Apr 16, 2010 at 6:38 PM, Dr Nathan Hurst <[email protected]> wrote:
> On Fri, Apr 16, 2010 at 09:21:40PM +0000, Matthias Urlichs wrote:
>> Hi,
>>
>> I wrote:
>> > However, I do think that I'd rather implement a 'tell me what you can
>> > do' feature command, than allocate a new ID for every crazy ^w
>> > interesting idea I might have.
>>
>> On the flip side, Louis Swart <[email protected]> replied that
>> he'd be amenable to delegating sub-ID of 'his' 0xFF device ID range to
>> people if they send him a short description of what the code is supposed
>> to be doing. I presume that this way would fit into owfs somewhat more
>> easily.
>
> Given the 2^56 ids available under 0xff, I suspect that would do us
> for the time being. The real problem is overallocation of the space
> (thus using it up for non-existant instantiations). I suggest that we
> allocate 32 bit ranges at a time allowing for a wildly successful
> project to go to everyone on the net, and still allowing 16M projects.
>
> njh
>
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