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Re: xPL...1 Wire
- Subject: Re: xPL...1 Wire
- From: Ian Lowe
- Date: Sun, 25 May 2003 11:24:00 +0000
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<DIV><FONT face="Arial" size="2">Yep. I
would think the 1-wire bridge PIC would have to:</FONT></DIV>
<DIV><FONT face="Arial"
size="2"></FONT> </DIV>
<DIV><FONT face="Arial" size="2">1)
Maintain a table (in eeprom?) of ROM IDs, and a ZONE number for each
one</FONT></DIV>
<DIV><FONT face="Arial" size="2">2) Poll
each 1-wire device on the bus</FONT></DIV>
<DIV><FONT face="Arial" size="2">3) Report
the status of each zone</FONT></DIV>
<DIV><FONT face="Arial" size="2">4) handle
different 1-wire devices, switches, temperature
etc.</FONT></DIV>
<DIV><FONT face="Arial"
size="2"></FONT> </DIV>
<DIV><FONT face="Arial" size="2">Item
four might be stretching a PIC a little too far, in which case,
one for temperature, one for switches and so on. we can have multiple PIC
devices on a 1-wire bus, as far a I am aware, so that should be easy enough
to do..</FONT></DIV>
<DIV><FONT face="Arial"
size="2"></FONT> </DIV>
<DIV><FONT face="Arial"
size="2">Ian.</FONT></DIV>
<BLOCKQUOTE>
<DIV>----- Original Message ----- </DIV>
<DIV><B>From:</B> <A
title="fmcalind@xxxxxxx" href="mailto:fmcalind@xxxxxxx";>Frank
Mc Alinden</A> </DIV>
<DIV><B>To:</B> <A title="ukha_xpl@xxxxxxx"
href="mailto:ukha_xpl@xxxxxxx";>ukha_xpl@xxxxxxx</A>
</DIV>
<DIV><B>Sent:</B> Sunday, May 25, 2003 11:14
AM</DIV>
<DIV><B>Subject:</B> Re: [ukha_xpl] xPL...1
Wire</DIV>
<DIV></DIV>
<DIV><FONT face="Arial" size="2">Hi
Ian</FONT></DIV>
<DIV><FONT face="Arial"
size="2">
Im going to waffle a bit here
....</FONT></DIV>
<DIV><FONT face="Arial"
size="2"></FONT> </DIV>
<DIV><FONT face="Arial" size="2">The 1 wire
hub i believe is a 6 port (zone) thingy which may have i assume
several ds18s20,s on each zone.... So how does it all piece together...How
does an application get the status of the ds1820 hanging off port (zone)
1??? Do we have zone = ?? in our xPl stat message ??? so the pic then
queries port 1 and passes the data back ....also ibuttons i
assume can also be on the same zone???</FONT></DIV>
<DIV><FONT face="Arial"
size="2">Frank</FONT></DIV>
<BLOCKQUOTE>
<DIV>----- Original Message ----- </DIV>
<DIV><B>From:</B> <A title="ian@xxxxxxx"
href="mailto:ian@xxxxxxx";>Ian
Lowe</A> </DIV>
<DIV><B>To:</B> <A title="ukha_xpl@xxxxxxx"
href="mailto:ukha_xpl@xxxxxxx";>ukha_xpl@xxxxxxx</A>
</DIV>
<DIV><B>Sent:</B> Sunday, May 25, 2003 8:05
PM</DIV>
<DIV><B>Subject:</B> Re: [ukha_xpl] xPL...1
Wire</DIV>
<DIV></DIV><TT>>Speaking of Schema,s which Schema will
the 1 wire come under ????>or will it have its own ??I don't know, tbh.
I suspect that we should consider 1-wire as simply atransport, and look at
the actual data being sent..so, we produce a TEMP.BASIC Schema, for simple
temperature information, thenadd the 1-wire specific bits into a TEMP.1WIRE
extension..In fact, yeah, that sounds best. 1-wire is the transport, not
the system.having a specific 1-wire schema would be like having an RS232
Schema..>Are you going to have a Projects Page ??Yep. just finding the
best web system to do it in..Ian.</TT><TT>xPL Links: <A
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