diydrones/PX4Firmware — pull request #13 by Slatye (2014-09-02 07:58:13+00:00)
Title: Airspeed sensor scale

airspeed: ioctl can be used to set the sensor scaling (previously the scale was ignored when using AIRSPEEDIOCSSCALE). This only applies to the MEAS sensors (and other devices with the same address). The ETS sensor produces an output in Pascals directly, so no scaling is applied to that.