Hi, The message you saw can most likely be ignored. The WMR300 reports a cumulative rain total rather than an incremental rain value (ie rainfall per period). WeeWX stores 'rainfall per archive period' so the WMR300 driver needs to calculate an incremental rainfall value from the cumulative value reported by the station. This is done by keeping track of the last cumulative rain value from the station and calculating the incremental value as the difference between the current cumulative rain value and the last cumulative rain value. This works fine once the driver has been running long enough to have received two packets with cumulative rain data. However, when the driver (read weeWX) first starts, the driver has no idea what the last cumulative rain value (ie the 'old' value) was so it is set to None. When the first packet is received by the driver with cumulative rain data (let's say 43.688) the driver cannot calculate the incremental rainfall as it does not know the 'old' value. Consequently, you get a message like you saw. When the next packet arrives with cumulative rainfall data it should work fine as the driver now has an 'old' value.
So if you are seeing the message you saw when you first startup weeWX then that is normal operation and nothing to worry about. However, if you are seeing this message regularly and it's not associated with a weeWX start/restart then something is wrong. Gary On Wednesday, 26 July 2017 02:02:58 UTC+10, Juan Antonio Mosquera wrote: > > What does this log message mean in the WMR300 ?, I searched the net and > found nothing (for now) > > wmr300: possible missed rain event: new=43.688 old=None > wmr300: rain=None rain_total=43.688 last_rain=None > > > > Thank you! > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
