In my code (in a node-red environment) if I get a value of 85 then I
retry after a timeout (1 sec I think) and only if I get three 85 in a
row do I accept it as 85.
Colin
On 6 December 2016 at 10:04, Sven Giermann <sven.gierm...@gmail.com> wrote:
> I have no idea of what pyownet does or how it is implemented...
> But I know from another project, that DS1820 reports 85.0 deg C when it
> encounters errors. Unfortunately without any other error flag! That's why I
> implemented a way to accept a temperature of 85.0 only, if the previously
> read temp was in that range (82-88), otherwise I just skip this reading and
> try once again.
>
> Maybe pyownet knows of this behaviour (it's by design and described in
> DS1820 datasheet) and therefore throws an error, when it reads exactly 85
> deg C?!
>
>
> 2016-12-06 9:42 GMT+01:00 Martin Patzak (GMX) <martin.pat...@gmx.de>:
>>
>>
>>
>> On 12/06/2016 01:41 AM, Jan Kandziora wrote:
>> > Am 05.12.2016 um 09:35 schrieb Martin Patzak (GMX):
>> >>> The new node works fine too, but unfortunately I get an error, when a
>> >>> sensor is right at 85 deg C:
>> >>>
>> >>>
>> >>> /Traceback (most recent call last)://
>> >>> // File "read_a_temp.py", line 15, in <module>//
>> >>> // sensed = op.read('/28.676A20060000/latesttemp')//
>> >>> // File "/home/mnm/pyownet/src/pyownet/protocol.py", line 545, in
>> >>> read//
>> >>> // raise OwnetError(-ret, self.errmess[-ret], path)//
>> >>> //pyownet.protocol.OwnetError: [Errno 22] legacy - Invalid
>> >>> transaction: '/28.676A20060000/latesttemp'
>> >>> /
>> >> hold on, my test was done in a rush, so I forgot to stop the task
>> >> reading the temps from the temperature node.
>> >> Could that have anything to do with error message?
>> >>
>> >> I cant test more today, because that was the last sensor over 85 deg C,
>> >> so I have to wait until tomorrow morning...
>> >>
>> > Please confirm that you can repeat the error condition first.
>> yes, I could repeat it today. This time I stopped first the other task
>> reading the temperature nodes.
>> I cannot read a straight value of 85 degC, instead I get this
>> transaction error. The values I can read are just above or just below 85
>> degC.
>>
>> I can provide debug from owserver if it would help you figuring out
>> whats going on. Please advise.
>>
>> You mentionened the manuals recieved an update regarding the new
>> latesttemp node. I am sorry to ask this, but where do I find this. I did
>> update owfs-doc to 3.1p4 but cannot find latesttemp anywhere. Is it
>> somewhere else I should be looking?
>>
>> Martin
>>
>>
>>
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