ArduPlane reverse thrust setup

[tridge]

@mirkix

With these settings it seems that it works as desired. Unfortunately in manual mode I could not set the throttle anymore, SERVO3 (PWM out to ESC) was fixed to 1500 irrespective of the throttle stick position. I could fix that by setting RC3_TRIM from 984 to 982. RC3_MIN is still at 984. If RC3_TRIM has the same value as RC3_MIN and SERVO3_TRIM is 1500 than it is not possible to set the throttle in manual flight mode (RC3 PWM out fixed to 1500), maybe that is a bug.

I’ve reproduced this, and it looks like this can only happen when using reverse thrust and RC3_MIN is exactly equal to RC3_TRIM. I’ll look at fixing that.

@MagicRuB

Manual is passthrough. Nothing the autopilot can do about that, sorry. I suggest not using MANUAL.

that is no longer true in 3.8.0. Manual does mixing in the same way other modes do mixing, so if you have the RC3_MIN/MAX over a different range from SERVO3_MIN/MAX.