I tested the new airspeed_adc modulle.
If you wnat the code to use the airspeed in the fw_v_ctl.c you have to add this to you airframe file.
<flag name="USE_AIRSPEED"/>
my airframe file looks like this:
<load name="airspeed_adc.xml">
<define name="ADC_AIRSPEED" value="ADC_5"/>
<flag name=" AIRSPEED_QUADRATIC_SCALE" value="1.2588f"/>
<flag name="AIRSPEED_BIAS" value="230"/>
<flag name="AIRSPEED_NB_SAMPLES" value="32"/>
<flag name="USE_AIRSPEED"/>
</load>