How can I see wind speed (& direction) with digital (& analogic)wind sensor in OP&SK?

[pol.bob]

I finally succeeded, this is the code I used to send NMEA0183 sentences to SignalK. Now I'm able to display speed in instrument panel.This is just the beginning, now I have to do the same thing with the wind direction, but now I have good hopes 

Code:

from gpiozero import Button
import socket, pynmea2
import time
import math

W_Direction = 35  # To be sostitute with analog...
count = 0         # Counts how many half-rotations
radius_cm = 7.0   # Radius of your anemometer
wind_interval = 1 # How often (secs) to report speed
store_speeds = [] # Empty list

ADJUSTMENT = 1.18
CM_IN_A_ML = 185200.0
SECS_IN_AN_HOUR = 3600

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

# Every half-rotation, add 1 to count:

def spin():
   global count
   count = count + 1

# Calculate wind speed given the time interval:

def calc_speed(time_sec):
       global count
       circumference_cm = (2 * math.pi) * radius_cm
       rotations = count / 2.0

       # Calculate distance travelled by a cup in mile
       dist_ml = (circumference_cm * rotations) / CM_IN_A_ML

       # Speed = distance / time
       ml_per_sec = dist_ml / time_sec
       ml_per_hour = ml_per_sec * SECS_IN_AN_HOUR

       # Calculate speed
       final_speed = ml_per_hour * ADJUSTMENT

       return final_speed

def reset_wind():
    global count
    count = 0

wind_speed_sensor = Button(5)
wind_speed_sensor.when_activated = spin

# Loop to measure wind speed and report at wind_interval:

while True:
    start_time = time.time()
    while time.time() - start_time <= wind_interval:
           reset_wind()
           time.sleep(wind_interval)
           final_speed = calc_speed(wind_interval)

# NMEA0183 sentences to localhost 10110 to allow data read with Openplotter:

    mwv = pynmea2.MWV('O$', 'MWV', (str(round(W_Direction,1)),'R',str(round(final_speed,1)),'N','A'))
    mwv1=str(mwv)
    mwv2=mwv1+"\r\n"
    time.sleep(0.051)
    sock.sendto(mwv2, ('localhost', 10110))