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Statistics DavisVP2+ are not given by webtags API

From build 3044 the development baton passed to Mark Crossley. Mark has been responsible for all the Builds since. He has made the code available on GitHub. It is Mark's hope that others will join in this development, but at the very least he welcomes your ideas for future developments (see Cumulus MX Development suggestions).

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HansR
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Re: Statistics DavisVP2+ are not given by webtags API

Post by HansR »

Well, searching for ForceVPBarUpdate points to the Cumulus.ini entry and the version 3.0.0 entry.
Neither gives the version of the firmware from which this can be set to false.

Anyway, I assume my 1.73 is very old, it has always been set to true (1) :lol:
And anyway, the fix in build 3094 works while the value is set to true so I leave it as it is.
https://meteo-wagenborgen.nl / Cumulus 3.6.8 (build: 3084)
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Re: Statistics DavisVP2+ are not given by webtags API

Post by freddie »

HansR wrote:
Tue 15 Sep 2020 9:05 am
Well, searching for ForceVPBarUpdate points to the Cumulus.ini entry and the version 3.0.0 entry.
Neither gives the version of the firmware from which this can be set to false.
You need to search a bit harder :D One multi-word search and five minutes reading shows me that the original problem was that the hardware (the pressure sensor itself) only allowed 15-min updates, which could be worked around (on the console) by pressing the "Bar" button on the console twice. Davis then published that their serial command BARREAD would have the same effect. They didn't implement this straight away in the DLL that Steve Loft used to query the console, so he found a work-around that went into a Cumulus 1 beta version back in 2008.
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Re: Statistics DavisVP2+ are not given by webtags API

Post by HansR »

Now I am curious for that multi-word search ;)
I found what you cited. But I did not find the firmware version nr.
So it is still not clear to me from which firmware version on this parameter can/must be 0.

But never mind, the whole thing works again :D
https://meteo-wagenborgen.nl / Cumulus 3.6.8 (build: 3084)
Davis Vantage Pro 2+ / Raspberry Pi 3 Model B Plus Rev 1.3
Raspbian Buster / 5.4.51-v7+ armv7l (before: 4.19.118)
Mono JIT compiler version 6.10.0.104 (before: 6.8.0.123)

freddie
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Re: Statistics DavisVP2+ are not given by webtags API

Post by freddie »

HansR wrote:
Tue 15 Sep 2020 10:58 am
I found what you cited. But I did not find the firmware version nr.
So it is still not clear to me from which firmware version on this parameter can/must be 0.
I didn't make it clear in my answer that there was no firmware change. It was the usage of BARREAD that allowed more frequent updates on older hardware. Newer hardware provides updated readings at a more frequent interval without the need for additional BARREAD calls. It is my impression from the thread that the new hardware was introduced around 2005.
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Re: Statistics DavisVP2+ are not given by webtags API

Post by HansR »

OK. Thanks!
https://meteo-wagenborgen.nl / Cumulus 3.6.8 (build: 3084)
Davis Vantage Pro 2+ / Raspberry Pi 3 Model B Plus Rev 1.3
Raspbian Buster / 5.4.51-v7+ armv7l (before: 4.19.118)
Mono JIT compiler version 6.10.0.104 (before: 6.8.0.123)

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