Hi Laurent,
I suffered for several years with a similar issue, I have an 8 bus
system and I would loose 1 or more of the busses, the only way to
recover was to power cycle. From what I have read I don't believe that
there is any other way to reset a DS2482.
Over that time I tried all sorts of things to fix the problem, it was
random, could be a month or more between failures, could be less than a day.
The good news is that I have finally tracked it down and fixed it
(fingers crossed as I type this!). It is a long story, I will post the
details when I have more time, but the basic problem was mains noise
caused by a soft start unit on a pump. I would recommend using good
quality power supplies, I used Meanwell MDR-20-5 units, not cheap but
worthwhile if it fixes the problem.
You say it happens from time to time, can you identify anything that may
have switched on or off at the same time? Can you put an oscilloscope
on the mains to check for noise?
Hope this helps, I know how frustrating it can be.
Mick
On 26/07/18 09:07, Laurent FAILLIE via Owfs-developers wrote:
Hello,
Is it a way to issue a reset command to a DS2482-800 ?
I'm driving my home automation using this chips and time to time, I'm
loosing all my probe.
The chip is still detected by
# i2cdetect -y 2
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- 18 -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
The only solution is a power cycle on the chip :(
Thanks
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