iButton Multisensor detection

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iButton Multisensor detection

Michael Markstaller
Hi,

I wonder wether I'm doing something wrong or or there might be a problem with the detection/display of the iButtonlink Multisensors within owfs:
Doing a "owread /26.123456000000/MultiSensor/type" I only get "unknown", although the sensor (a MS-TL) has the value "1B00000000000000" in page.3 (which I guess is where to look for the type)

owfs is 2.7p21, pulled from svn today.

Regards Michael

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Re: iButton Multisensor detection

Paul Alfille-2
Hmm... We were looking at page 0 in the code. I've just perused iButtonLink's website and can't find the location documented. If it's supposed to be page 3, it's an easy fix.

Paul

On Thu, Apr 23, 2009 at 9:32 AM, Michael Markstaller <[hidden email]> wrote:
Hi,

I wonder wether I'm doing something wrong or or there might be a problem with the detection/display of the iButtonlink Multisensors within owfs:
Doing a "owread /26.123456000000/MultiSensor/type" I only get "unknown", although the sensor (a MS-TL) has the value "1B00000000000000" in page.3 (which I guess is where to look for the type)

owfs is 2.7p21, pulled from svn today.

Regards Michael

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Re: iButton Multisensor detection

Michael Markstaller
I also found no docs on this, I simply looked at ow_2438.c and found the according values at page.3
At least for the recently bought MS-TH, MS-TL, and MS-TV I have here, they match. Don't know if this has changed..

Michael

-----Original Message-----
From: Paul Alfille [mailto:[hidden email]]
Sent: Thursday, April 23, 2009 6:49 PM
To: [hidden email]
Subject: Re: [Owfs-developers] iButton Multisensor detection

Hmm... We were looking at page 0 in the code. I've just perused iButtonLink's website and can't find the location documented. If it's supposed to be page 3, it's an easy fix.

Paul


On Thu, Apr 23, 2009 at 9:32 AM, Michael Markstaller <[hidden email]> wrote:


        Hi,
       
        I wonder wether I'm doing something wrong or or there might be a problem with the detection/display of the iButtonlink Multisensors within owfs:
        Doing a "owread /26.123456000000/MultiSensor/type" I only get "unknown", although the sensor (a MS-TL) has the value "1B00000000000000" in page.3 (which I guess is where to look for the type)
       
        owfs is 2.7p21, pulled from svn today.
       
        Regards Michael
       
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Re: iButton Multisensor detection

Paul Alfille-2
Ok, I made the change.

Can you confirm:
0x1A MS-TV
0x1B MS-TL
0x19 MS-TH

Paul

On Thu, Apr 23, 2009 at 1:35 PM, Michael Markstaller <[hidden email]> wrote:
I also found no docs on this, I simply looked at ow_2438.c and found the according values at page.3
At least for the recently bought MS-TH, MS-TL, and MS-TV I have here, they match. Don't know if this has changed..

Michael

-----Original Message-----
From: Paul Alfille [mailto:[hidden email]]
Sent: Thursday, April 23, 2009 6:49 PM
To: [hidden email]
Subject: Re: [Owfs-developers] iButton Multisensor detection

Hmm... We were looking at page 0 in the code. I've just perused iButtonLink's website and can't find the location documented. If it's supposed to be page 3, it's an easy fix.

Paul


On Thu, Apr 23, 2009 at 9:32 AM, Michael Markstaller <[hidden email]> wrote:


       Hi,

       I wonder wether I'm doing something wrong or or there might be a problem with the detection/display of the iButtonlink Multisensors within owfs:
       Doing a "owread /26.123456000000/MultiSensor/type" I only get "unknown", although the sensor (a MS-TL) has the value "1B00000000000000" in page.3 (which I guess is where to look for the type)

       owfs is 2.7p21, pulled from svn today.

       Regards Michael

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Re: iButton Multisensor detection

Michael Markstaller
Paul, thanks, works fine now.

Yes, I can confirm:
0x1A MS-TV
0x1B MS-TL
0x1C MS-TC
0x19 MS-TH

Just as a note, while playing around with these, I found the following:
MS-TL: If the light-level is zero, VAD reads sometimes 0, sometimes 10.23. Don't know wether this is something with the sensor or even specific for the DS2438, the same with the MS-TV, also reads 10.23 when it should be 0.
Looks to me for any application using the values everything above 10 should most likely be interpreted as zero or below..

Michael

-----Original Message-----
From: Paul Alfille [mailto:[hidden email]]
Sent: Friday, April 24, 2009 1:02 AM
To: [hidden email]
Subject: Re: [Owfs-developers] iButton Multisensor detection

Ok, I made the change.

Can you confirm:
0x1A MS-TV
0x1B MS-TL
0x19 MS-TH


Paul

On Thu, Apr 23, 2009 at 1:35 PM, Michael Markstaller <[hidden email]> wrote:


        I also found no docs on this, I simply looked at ow_2438.c and found the according values at page.3
        At least for the recently bought MS-TH, MS-TL, and MS-TV I have here, they match. Don't know if this has changed..
       
        Michael
       

        -----Original Message-----
        From: Paul Alfille [mailto:[hidden email]]
        Sent: Thursday, April 23, 2009 6:49 PM
        To: [hidden email]
        Subject: Re: [Owfs-developers] iButton Multisensor detection
       
        Hmm... We were looking at page 0 in the code. I've just perused iButtonLink's website and can't find the location documented. If it's supposed to be page 3, it's an easy fix.
       
        Paul
       
       
        On Thu, Apr 23, 2009 at 9:32 AM, Michael Markstaller <[hidden email]> wrote:
       
       
               Hi,
       
               I wonder wether I'm doing something wrong or or there might be a problem with the detection/display of the iButtonlink Multisensors within owfs:
               Doing a "owread /26.123456000000/MultiSensor/type" I only get "unknown", although the sensor (a MS-TL) has the value "1B00000000000000" in page.3 (which I guess is where to look for the type)
       
               owfs is 2.7p21, pulled from svn today.
       
               Regards Michael
       
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Re: iButton Multisensor detection

Paul Alfille-2
Michael,
 
Thank you for the report asnd for testing to promptly!
 
Do intermediate values work?
 
Paul Alfille

On Fri, Apr 24, 2009 at 8:20 AM, Michael Markstaller <[hidden email]> wrote:
Paul, thanks, works fine now.

Yes, I can confirm:
0x1A MS-TV
0x1B MS-TL
0x1C MS-TC
0x19 MS-TH

Just as a note, while playing around with these, I found the following:
MS-TL: If the light-level is zero, VAD reads sometimes 0, sometimes 10.23. Don't know wether this is something with the sensor or even specific for the DS2438, the same with the MS-TV, also reads 10.23 when it should be 0.
Looks to me for any application using the values everything above 10 should most likely be interpreted as zero or below..

Michael

-----Original Message-----
From: Paul Alfille [mailto:[hidden email]]
Sent: Friday, April 24, 2009 1:02 AM
To: [hidden email]
Subject: Re: [Owfs-developers] iButton Multisensor detection

Ok, I made the change.

Can you confirm:
0x1A MS-TV
0x1B MS-TL
0x19 MS-TH


Paul

On Thu, Apr 23, 2009 at 1:35 PM, Michael Markstaller <[hidden email]> wrote:


       I also found no docs on this, I simply looked at ow_2438.c and found the according values at page.3
       At least for the recently bought MS-TH, MS-TL, and MS-TV I have here, they match. Don't know if this has changed..

       Michael


       -----Original Message-----
       From: Paul Alfille [mailto:[hidden email]]
       Sent: Thursday, April 23, 2009 6:49 PM
       To: [hidden email]
       Subject: Re: [Owfs-developers] iButton Multisensor detection

       Hmm... We were looking at page 0 in the code. I've just perused iButtonLink's website and can't find the location documented. If it's supposed to be page 3, it's an easy fix.

       Paul


       On Thu, Apr 23, 2009 at 9:32 AM, Michael Markstaller <[hidden email]> wrote:


              Hi,

              I wonder wether I'm doing something wrong or or there might be a problem with the detection/display of the iButtonlink Multisensors within owfs:
              Doing a "owread /26.123456000000/MultiSensor/type" I only get "unknown", although the sensor (a MS-TL) has the value "1B00000000000000" in page.3 (which I guess is where to look for the type)

              owfs is 2.7p21, pulled from svn today.

              Regards Michael

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              300 plus technical and hands-on sessions. Register today.
              Use priority code J9JMT32. http://p.sf.net/sfu/p
              _______________________________________________
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Re: iButton Multisensor detection

Michael Markstaller
Yes, the values work fine, MS-TL light-level in percent is as far as I understood VAD/VDD which looks reasonable.
I was just curious about this 10.23 reading. But this is the same with 1wireviewer, so I expect this to be "by design"

Michael

-----Original Message-----
From: Paul Alfille [mailto:[hidden email]]
Sent: Friday, April 24, 2009 2:52 PM
To: [hidden email]
Subject: Re: [Owfs-developers] iButton Multisensor detection

Michael,
 
Thank you for the report asnd for testing to promptly!
 
Do intermediate values work?
 
Paul Alfille


On Fri, Apr 24, 2009 at 8:20 AM, Michael Markstaller <[hidden email]> wrote:


        Paul, thanks, works fine now.
       
        Yes, I can confirm:
       
        0x1A MS-TV
        0x1B MS-TL
       
        0x1C MS-TC
        0x19 MS-TH
       
        Just as a note, while playing around with these, I found the following:
        MS-TL: If the light-level is zero, VAD reads sometimes 0, sometimes 10.23. Don't know wether this is something with the sensor or even specific for the DS2438, the same with the MS-TV, also reads 10.23 when it should be 0.
        Looks to me for any application using the values everything above 10 should most likely be interpreted as zero or below..
       

        Michael
       
        -----Original Message-----
        From: Paul Alfille [mailto:[hidden email]]
       
        Sent: Friday, April 24, 2009 1:02 AM
        To: [hidden email]
        Subject: Re: [Owfs-developers] iButton Multisensor detection
       
        Ok, I made the change.
       
        Can you confirm:
        0x1A MS-TV
        0x1B MS-TL
        0x19 MS-TH
       
       
        Paul
       
        On Thu, Apr 23, 2009 at 1:35 PM, Michael Markstaller <[hidden email]> wrote:
       
       
               I also found no docs on this, I simply looked at ow_2438.c and found the according values at page.3
               At least for the recently bought MS-TH, MS-TL, and MS-TV I have here, they match. Don't know if this has changed..
       
               Michael
       
       
               -----Original Message-----
               From: Paul Alfille [mailto:[hidden email]]
               Sent: Thursday, April 23, 2009 6:49 PM
               To: [hidden email]
               Subject: Re: [Owfs-developers] iButton Multisensor detection
       
               Hmm... We were looking at page 0 in the code. I've just perused iButtonLink's website and can't find the location documented. If it's supposed to be page 3, it's an easy fix.
       
               Paul
       
       
               On Thu, Apr 23, 2009 at 9:32 AM, Michael Markstaller <[hidden email]> wrote:
       
       
                      Hi,
       
                      I wonder wether I'm doing something wrong or or there might be a problem with the detection/display of the iButtonlink Multisensors within owfs:
                      Doing a "owread /26.123456000000/MultiSensor/type" I only get "unknown", although the sensor (a MS-TL) has the value "1B00000000000000" in page.3 (which I guess is where to look for the type)
       
                      owfs is 2.7p21, pulled from svn today.
       
                      Regards Michael
       

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Re: iButton Multisensor detection

Pascal Brugier
Hello,

I've got another problem with this MultiSensor, specialy with MS-TL
 
I can confirm there is 0x1B in page.3 but it appears as temperature and humidity
sensors in owfs directory.

I'm sure it's temp and light sensor because  "humdity" value change, read from
xpl-perl owfs module, when light is on or off.

My owfs  version is 2.7p27.

Is this an error or normal ?

Regards,
PAscal.



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Re: iButton Multisensor detection

Paul Alfille-2
Normal.

I suppose humidity should really be labeled: "humidity, if this really has a HIH3670 attached"
Most of the constructed sensors, like the humidity and thermocouple on't have a way of telling owfs their capabilities. You need outside information (looking at the device) to know which properties make sense.

OWFS wasn't constructed to include or exclude properties based on the values of some properties.

Paul Alfille

On Wed, Nov 25, 2009 at 3:46 PM, Pascal Brugier <[hidden email]> wrote:
Hello,

I've got another problem with this MultiSensor, specialy with MS-TL

I can confirm there is 0x1B in page.3 but it appears as temperature and humidity
sensors in owfs directory.

I'm sure it's temp and light sensor because  "humdity" value change, read from
xpl-perl owfs module, when light is on or off.

My owfs  version is 2.7p27.

Is this an error or normal ?

Regards,
PAscal.



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Re: iButton Multisensor detection

Pascal Brugier
On Wed, 25 Nov 2009 17:18:46 -0500, Paul Alfille <[hidden email]>
wrote:
> Normal.

Ok.

> OWFS wasn't constructed to include or exclude properties based on the
> values of some properties.

Yes, I understand.

I was surprised by the name and the value, above 300 when it's dark :),
but it's not a problem for me.
I just want to know if it's normal or not and now I know :)

Regards,
Pascal

PS : excuse me for my bad english.


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Re: iButton Multisensor detection

Paul Alfille-2
Your english is fine.

The newer implementation puts optional properties in their own subdirectory. A few, like humidity, are left in the main directory for backwards compatibility.

The inappropriate properties aren't a problem once you know it's normal, but I don't like the surprise aspect.

So. What kind of values are you getting for the light sensor?

Paul Alfille

On Wed, Nov 25, 2009 at 6:45 PM, Pascal Brugier <[hidden email]> wrote:
On Wed, 25 Nov 2009 17:18:46 -0500, Paul Alfille <[hidden email]>
wrote:
> Normal.

Ok.

> OWFS wasn't constructed to include or exclude properties based on the
> values of some properties.

Yes, I understand.

I was surprised by the name and the value, above 300 when it's dark :),
but it's not a problem for me.
I just want to know if it's normal or not and now I know :)

Regards,
Pascal

PS : excuse me for my bad english.


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Re: iButton Multisensor detection

Pascal Brugier
Hello,

Thank you.
I read and I understand but this make me wondering why DS2438 is only seen
as a temp & humidty sensor?
This sensor always act as temp sensor but for the second possibility it
can do what ever ibuttons or other dealers or manufacturers, wants.

I understand that VAD an VDD are the info to read but when a software as
xpl-perl is used, it reads what owfs give to it and so, in my case, report
humidty even if it's light level sensor.

I thought that I'm not the only one who use this kind of multi sensor and
other people could be surprised by this.

I thought it'll be better if in the futur owfs could make the difference
beetween multi-sensor names, so "reading software" can get and send the
real type/name of the sensor.

I'm not a developer, I try to read the code in
module/owlib/src/c/ow_2438.c, this make me understand that it this file has
to be  rewriten to take care of each multi-sensor possibility and so need
time to do it.

If I can help I'll do it.

Neverthelessthe job you make until now is realy great.

Regards,
Pascal.


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Re: iButton Multisensor detection

Paul Alfille-2
On Mon, Nov 30, 2009 at 5:35 AM, Pascal Brugier <[hidden email]> wrote:
Hello,

Thank you.
I read and I understand but this make me wondering why DS2438 is only seen
as a temp & humidty sensor?
This sensor always act as temp sensor but for the second possibility it
can do what ever ibuttons or other dealers or manufacturers, wants.


Backwards compatibility. In 2003 when the project started, the humidity sensor was in common usage (a published design for a sought-after feature with a number of commercial versions available, especially for weather stations). There was no way of telling if a humidity design was implemented. The data fields for the multisensors weren't in use (and right now it's unique ibuttonlink and even they don't document it fully).

As more designs came out, I moved the the subdirectory model, which at least visually makes more sense. Changing the behavior for existing code is unappealing.
 
I understand that VAD an VDD are the info to read but when a software as
xpl-perl is used, it reads what owfs give to it and so, in my case, report
humidty even if it's light level sensor.

I thought that I'm not the only one who use this kind of multi sensor and
other people could be surprised by this.


Would a commandline switch like "--multisensor" that displayed only multisensor files be a good compromise?

Paul Alfille
 
I thought it'll be better if in the futur owfs could make the difference
beetween multi-sensor names, so "reading software" can get and send the
real type/name of the sensor.

I'm not a developer, I try to read the code in
module/owlib/src/c/ow_2438.c, this make me understand that it this file has
to be  rewriten to take care of each multi-sensor possibility and so need
time to do it.

If I can help I'll do it.

Neverthelessthe job you make until now is realy great.

Regards,
Pascal.



------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now.  http://p.sf.net/sfu/bobj-july
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