V4 WLL Wind Speed Bug on Restart

[ARootBear]

I've noticed an issue that seems to occur after a restart which causes a large spike in average wind speed. I have attached a screenshot showing two instances of this occurring after a restart today. The diags file is also attached, and line 271 appears to be where things go wrong:

Code: Select all

2024-04-18 18:39:36.466 DoWind: latest=24.1, speed=-1.0 - Current: gust=56.3, speed=23.8
2024-04-18 18:39:36.467 DoWind: New: gust=56.3, speed=51.3, latest:24.1

The average wind speed then steadily decreases until it levels out at the correct value.

I have noticed that something similar seems to happen when cumulus does not receive any broadcasts from the WLL (ie, when the "No Broadcast Data Received from the WLL for 30 Seconds" error appears) - I end up with inflated 10-min average wind speed readings until the connection is restored. Worth noting that I had this same issue in Cumulus V3 as well. Possibly something to do with the way Cumulus tries to ensure it does not miss a peak gust when packets are not received? Just speculating. In any case, it causes me to have to manually correct my wind speed records from time to time.

[ARootBear]

A couple additional things that are happening on an unplanned PC restart. Daily rain seems to jump by the monthly rain to date, and all daily info up to the point of restart is erased. Wind run restarts from 0, daily highs/lows all reset as though the station just rolled over at midnight. I have attached my rain graph for the last two days showing two large jumps in recorded rainfall after a restart. Sorting out why my computer is constantly needing to restart on its own is another story.

[ConligWX]

This is probably one for Mark really who is away at present until about Tuesday of next week.

i would suggest however you install the latest build (4019) since you are running 4017 at present. make sure debugging is still on and run for a while, see if the same issue resides and post a new mxdiag log file for him to take a look at. Thanks.


can you confirm the CMX interval is the same as your WLL interval?

[mcrossley]

Yes, log files please.