Where in the code do the flaps get managed...?

Andrew_Rabbitt · January 23, 2020, 3:45am

I’m trawling through the code to figure out how the flap control works but I can’t find a mention of it anywhere despite my lousiest of grep searches. Can anyone wiser than me point it out please?

Grateful from Gateshead.

peterbarker · January 23, 2020, 6:41am

github.com

ardupilot/ardupilot/blob/master/ArduPlane/servos.cpp#L495


/*
  setup flap outputs
 */
void Plane::set_servos_flaps(void)
{
    // Auto flap deployment
    int8_t auto_flap_percent = 0;
    int8_t manual_flap_percent = 0;


    // work out any manual flap input
    RC_Channel *flapin = rc().find_channel_for_option(RC_Channel::AUX_FUNC::FLAP);
    if (flapin != nullptr && !failsafe.rc_failsafe && failsafe.throttle_counter == 0) {
        manual_flap_percent = flapin->percent_input();
    }


    if (auto_throttle_mode) {
        int16_t flapSpeedSource = 0;
        if (ahrs.airspeed_sensor_enabled()) {
            flapSpeedSource = target_airspeed_cm * 0.01f;
        } else {
            flapSpeedSource = aparm.throttle_cruise;

Andrew_Rabbitt · January 23, 2020, 7:24am

Thanks @peterbarker! Clearly my grepping needs a polish!