Thanks for the report.
There isn't an obvious error in the temperature code for the DS2760. It's a
read of location 0x18-9 and simple conversion to the correct units.
Can you help me with a couple of other steps:
1. What version of OWFS are you using?
2. Can you read some of the other values -- like voltage and current? They
use the same routines and should have similar zeros if there is a data read
problem.
3. Confirm that your sensor has family code 30 (ID starts with a 30)
4. Tell me a bit about the hardware. Is it powered? Who makes it?
Thanks,
Paul Alfille
On 8/19/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> So far, I've had a lot of success using 1wire stuff: I have a 2408 running
> some relays, am doing a bunch of stuff with temp sensors, and now I'm
> trying to get a 2760 to detect temps in a furnace. The thing is: when I
> ask for temperatures on the thermocouple I get reasonable answers, but
> when I query the chip temperature itself, I always get '0'. I haven't
> seen anything in the datasheet that would lead me to expect this: I
You are correct.
thought it'd report the room temp and use that number to calculate the
> cold-junction temp and interpolate the actual thermocouple value. So now
Correct
I'm wondering if the thermocouple values are accurate and I don't have a
>
good independent way right now to verify them. Has anyone else played
Yes, and they were accurate. (In the past with older versions of owfs.
Most people test with a cup of hot coffee.
with this? Does anyone have any advice?
>
-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems? Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >> http://get.splunk.com/
_______________________________________________
Owfs-developers mailing list
Owfs-developers@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/owfs-developers
