Davis drivers (meteostick and rtldavis) pro and vue

[James Pattinson]

I am currently using an SDR stick to read data from my Vantage Vue, using the rtldavis driver https://github.com/lheijst/weewx-rtldavis

I will probably move to a RFM69 based solution with an Arduino, has my SDR keeps dropping offline, and it will be nice to have multiple options anyway.

I'll be using the meteostick driver https://github.com/matthewwall/weewx-meteostick when it comes to that.

Now, I was curious and looked through the code and found that they both use similar (or maybe the same) code for wind error correction. 

I am however confused about this part

                """ The elder Vantage Pro and Pro2 stations measured
                the wind direction with a potentiometer. This type has
                a fairly big dead band around the North. The Vantage
                Vue station uses a hall effect device to measure the
                wind direction. This type has a much smaller dead band,
                so there are two different formulas for calculating
                the wind direction. To be able to select the right
                formula the Vantage type must be known.
                For now we use the traditional 'pro' formula for all
                wind directions.
                """

Later in the code,  we see

                    data['wind_speed_ec'] = wind_speed_ec
                    data['wind_speed_raw'] = wind_speed_raw
                    data['wind_dir'] = wind_dir_pro
                    data['wind_speed'] = wind_speed_ec * MPH_TO_MPS

So, it's pretty clear the code is using the Pro formula with it's dead band at north, and not the simpler Vue formula, which I think IS being calculate, just not used anywhere. 

                    # Vantage Vue
                    wind_dir_vue = wind_dir_raw * 1.40625 + 0.3

What's the best way of telling the driver or WeeWX that I have the Vue hardware? I'm not so good at following the code through, so I am unsure where the 'data' dict ends up, and don't want to break someting by naively setting data['wind_dir'] = wind_dir_vue and calling it a day. 

Appreciate any help...!