Build 993 WMR100 Support

DigbyDave · **Posted:** Tue Jun 14, 2011 9:44 am

Sorry,

I guess that may be why the Pressure trend doesn't match either. Main screen heading disappears as well, I started the screen cap before your last message.

On a tangent, have there been many requests for an option of pressure in QNH? Seems to be the more commonly quoted pressure in OZ and updated in real time on most official weather sites. MSLP is only calculated and quoted by the Bureau or Met every 3 hours. I know you already calculate it for the CWOP upload, do you read QFE from the console or just it's stated SLP?

Attachment:

994-993.jpg

steve · **Posted:** Tue Jun 14, 2011 10:07 am

DigbyDave wrote:

I guess that may be why the Pressure trend doesn't match either.

I'm not currently reading the pressure trend from the station, so only the Cumulus option will work just now.

Quote:

Main screen heading disappears as well

I don't understand why that would happen, the code for that is nothing to do with the station type. Are you saying it was OK in 993 but not 994?

Quote:

On a tangent, have there been many requests for an option of pressure in QNH?

For WMR stations, QNH is the same as SLP; it only applies a correction based on altitude. The only stations I'm aware of that calculate true SLP are the Davis ones, so those are the only ones that I have to take specific action for CWOP.

Quote:

do you read QFE from the console or just it's stated SLP?

Only SLP; I'm ignoring the station pressure (QFE) as there's nothing I need it for.

steve · **Posted:** Tue Jun 14, 2011 10:23 am

steve wrote:

I'm not currently reading the pressure trend from the station, so only the Cumulus option will work just now.

Actually, it looks like the station doesn't give me pressure trends, so I'll change the code to always use the Cumulus ones.

DigbyDave · **Posted:** Tue Jun 14, 2011 11:04 am

steve wrote:

I'm not currently reading the pressure trend from the station, so only the Cumulus option will work just now.

That is how I normally run Cumulus and how it is currently set, but it is not generating a forecast.

steve wrote:

For WMR stations, QNH is the same as SLP; it only applies a correction based on altitude.

I think I disagree on that one. If I take the QFE from the console, and use the standard formula to calculate QNH then I get the following, which is very close to the nearest airport QNH (1024.6). But the console displays 1021 as the sudo SLP. Some other forums have speculated that the WMR uses the console temp in it's calculation of SLP and not external temp and then they can get close to working out how the WMR gets it's result.

Attachment:

Screenshot.png

DigbyDave · **Posted:** Tue Jun 14, 2011 11:12 am

As for the disappearing title, I have tried restarting both 993 and 994. 994 is missing the header, 993 is not.

steve · **Posted:** Tue Jun 14, 2011 11:14 am

DigbyDave wrote:

That is how I normally run Cumulus and how it is currently set, but it is not generating a forecast.

I haven't put the code in for the forecast yet. Both the forecast and the pressure trend should hopefully be working in the next build.

Quote:

Some other forums have speculated that the WMR uses the console temp in it's calculation of SLP

Ah, that's interesting. I'm at sea level anyway so haven't seen the effects of the station's SLP calculations, I was just going by information I've found on the web. If the station isn't simply doing QNH for SLP, then I will have to read the station pressure and convert to QNH for CWOP.

steve · **Posted:** Tue Jun 14, 2011 11:17 am

DigbyDave wrote:

As for the disappearing title, I have tried restarting both 993 and 994. 994 is missing the header, 993 is not.

I'm afraid I have no idea why that's happening, I can't reproduce it. It can't be a colour problem, because the sunrise etc stuff uses the same colour. What string do you have in the 'header' box in the display settings in 994? Is it writing it to cumulus.ini correctly? It should be here:

[Display]
Heading=Sanday Weather

DigbyDave · **Posted:** Tue Jun 14, 2011 11:32 am

[Display]
Heading=Braitling Weather

In both installations. Yes, I am running 2 installations in 2 different folders, all settings are common other than station type and upload options. I thought they may be interfering re display, but launching 994 by itself results in the same problem.

steve · **Posted:** Tue Jun 14, 2011 11:49 am

DigbyDave wrote:

[Display]
Heading=Braitling Weather

In both installations.

That's odd. I wonder if there's a bug where changing the background colour changes the colour of the heading caption. I know I spotted a similar bug with another caption a while ago. I'll investigate.

If you change the heading colour, does it come back again?

DigbyDave · **Posted:** Tue Jun 14, 2011 12:02 pm

steve wrote:

If you change the heading colour, does it come back again?

tried changing background then text colour, no change.

DigbyDave · **Posted:** Tue Jun 14, 2011 12:28 pm

Steve,

Don't pull your hair out over the display problem. Looks like a computer kick in the pants solved that little issue. And the 2 installs are happily running side by side again.

steve · **Posted:** Tue Jun 14, 2011 12:29 pm

DigbyDave wrote:

tried changing background then text colour, no change.

I've looked through the code and I can't see any problems with the setting of either the caption or its colour, so I'm baffled. If you change the caption in the display settings, does it come back?

steve · **Posted:** Tue Jun 14, 2011 12:30 pm

DigbyDave wrote:

Looks like a computer kick in the pants solved that little issue. And the 2 installs are happily running side by side again.

Ah, that's good.

steve · **Posted:** Tue Jun 14, 2011 12:34 pm

DigbyDave wrote:

And the 2 installs are happily running side by side again.

Are you running two copies at the same time with the same weather station? Normally that would cause problems, but as the WMR100 protocol is pretty much read-only, I guess it might work. I'm not sure both copies will be seeing all the packets, though; I don't really know how the USB code works.

DigbyDave · **Posted:** Tue Jun 14, 2011 1:05 pm

One install is seeing the WMR direct (994), the other (993) is still using the WUHU / easyweather.dat / setup that I created some time back to enable me to use Cumulus.

As for running in parallel, assuming you are using the standard read functions, it shouldn't be a problem. I have been using VWS/WUHU/WSDL all polling the WMR up until now, what's one more to add to the mix, they all have their own benefits.

Hopefully once Cumulus is stable I can ditch a couple. Obviously 2 Cumuluses will not be necessary, VWS is going as soon as that happens (was the first and has my historic data - still working on a way to get that somewhere else). WUHU will no longer be necessary (tho I am using that to feed my weather DB and like it's data template flexibility and AWEKAS). WSDL, sorry but I still prefer WSDL graphs and it gives me QNH pressure correctly and calculates true MSLP from QFE.

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Build 993 WMR100 Support

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