I've never these kind of problems. I'm using just very kind random 5v supplies
what i can find. But the power is indirect driven by a beaglebone black. On
this moment i'm using a 12v lead battery and a LM 5v chip as an kind of ups:
root@bb02:~# uptime
10:58:22 up 342 days, 18:39, 1 user, load average: 0.79, 1.11, 1.19
:)
Nico
Mick Sulley wrote:
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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