Ok, I have committed the support code for the DS1821 thermostat and Paul
uploaded my document on the reset circuit to the examples section,
herehttp://owfs.org/index.php?page=ds1821-thermostat-circuitdoug-collinge
This stuff finally makes the DS1821 a usable device, actually fairly nice,
Very nicely done, Doug. Code, man page, circuit schematic with explanation,
timing diagrams and photographs.
Just to remind everyone, the DS1821 is a pseudo-1wire chip. It has no unique
address. It can be taken out of 1-wire mode by software, which then makes it
unreachable.
We get around the
I have just completed support for the DS1821 thermostat chip,
implementing all the features in the datasheet. It is tested and
ready to commit as far as I can tell. What should I do with it?
One of the little issues with the DS1821 is that, once you program it
to be a thermostat it stops
Your choice.
Either send the code and the schematic/instructions to me, or get added as a
developer and add it yourself.
And thank you.
Paul Alfille
On Jan 20, 2008 9:44 PM, Doug Collinge [EMAIL PROTECTED] wrote:
I have just completed support for the DS1821 thermostat chip,
implementing all
It's probably easier for you if you let me do the commit, though I'd
still like you to do a quick review in case I'm missing something
important.
I don't know how the website works so I'll send you the reset circuit
document and you can either post it somewhere or tell me how and I'll
do it
I've started work on supporting the DS1821 Thermostat.
It's a difficult chip, only partly a 1-wire device. It has no unique address,
and can't respond independently, nor can it announce itself on a device
discovery (directory listing).
Basically, the DS1821 should be on it's own 1-wire bus
