Christian,

The 1921 is a work in progress, but getting closer. We'll have to update the two
in lockstep.

Actually, the 1923 seems to be a superset of the 1922, perhaps your code should
support both.

The 1922/1923 use the password protection similar to the 1977, so I thought we'd
use the same syntax. (passwords cached in database as a write-only property).

Paul


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
Christian Magnusson
Sent: Wednesday, March 30, 2005 4:26 AM
To: owfs-developers
Subject: [Owfs-developers] DS1923 problems



I got some DS1923 yesterday, and I tried to add support to that device.
Many things are similar to DS1921 (with missions etc), but many commands
were different to I had to create a ow_1923.c for it.

My main problem is that I managed to read address 0x0200 from that
device once, then I tried to start a humidity conversion and read the
result... After that it was not possible to get any other
response but 0xFF... All ow_r_mem commands result into 0xFF on all
addresses, and then I found a small notice in the documentation.

"A temperature or humidity conversion must not be attempted while
the RTC oscillator is stopped. This causes the device to enter
en unrecoverable state"

I never touched this EOSC (Enable oscillator) on the device, so
I wonder if this could result into a broken 1-wire device??  Have
there been any other devices that could hang forever?
I have tried to disconnect the device for several hours, but it still
doesn't work.


First read of address 0x200-0x0220 worked (all time registers were zero
and crc was correct too)
Read: sz=37
690002000000000000000000000000207F9F7900FC00C070C8000000000000000000008E66
DATE_READ data= 0,  0,  0,  0,  0,  0,  0

When I read Latest humidity result for example, it just return 0xFF.
Read: sz=23 690E02FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
crc error



-- 
Christian Magnusson <[EMAIL PROTECTED]>



-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
_______________________________________________
Owfs-developers mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/owfs-developers


-------------------------------------------------------
This SF.net email is sponsored by Demarc:
A global provider of Threat Management Solutions.
Download our HomeAdmin security software for free today!
http://www.demarc.com/Info/Sentarus/hamr30
_______________________________________________
Owfs-developers mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/owfs-developers

Reply via email to