Clearing Archive Memory on Davis Westher Envoy

[Allan Tyson]

I have a Davis USB Westher Envoy connected to an RPi running weewx. It was running fine but I stopped weewx on the RPi and disconnected the Weather Envoy USB cable from the RPi to connect it to another RPi I was using to install Raspbian Buster with weewx on a smaller micro SD card so I could save it’s image to a smaller backup image file having originally installed it on an internal 120GB SSD drive.
The new installation worked just great but when I reconnected the Weather Envoy to the original RPi I discovered that the USB loggers’s memory was somehow corrupted so that weewx would no longer update Nginx. I cleared the memory by connecting the Logger to my Mac laptop & used WeatherLink to clear the archive memory.
There was a Post by Tom in 2012 saying you could change the configuration of a weather envoy using the config utility in weewx as well as using the WeatherLink software. I did see the instructions for using wee_device to change the parameters of the Davis driver but when running it I get an unrecognized hardware error and the Weather Envoy isn’t listed as being supported hardware in the list of supported hardware. Only the Vantsge Vue and Vantsge Pro2 Consoles are listed though in the pictorial list of supported hardware the Weather Envoy is shown.
Is there a way of clearing the Weather Envoy archive memory from the command line of the RPi so I can clear it without having to stop the RPI, disconnect the Envoy USB cable and connect it to my laptop to use the WeatherLink software to perform the clearing and then have to reconnect it to my RPi ?.

Allan

[Thomas Keffer]

Use wee_device with the --clear-memory option. Be sure to stop weewx first.

-tk

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[Allan Tyson]

I tried that. I get an unrecognized hardware error and it doesn’t complete. Same if I try the wee_device —info

Does the Vantage driver not support the Weather Envoy ?.

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[Thomas Keffer]

It does. In fact, that's what I use. 

It's not, by chance, an Envoy 8x? If so, we do not support it.

If it is a regular Envoy, we'll have to see the log. It may have a few useful clues.

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-tk

[Allan Tyson]

Tom,

 My bad. I wasn’t stopping weewx before trying the wee_device commands. With weewx stopped it works perfectly.

 Thanks,

 Allan

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