ArduCopter/RC_Channel: add option 219

(Transmitter Tuning)

ArduCopter/RC_Channel.cpp

@@ -128,6 +128,7 @@ void RC_Channel_Copter::init_aux_function(const AUX_FUNC ch_option, const AuxSwi
     case AUX_FUNC::FORCEFLYING:
     case AUX_FUNC::CUSTOM_CONTROLLER:
     case AUX_FUNC::WEATHER_VANE_ENABLE:
+    case AUX_FUNC::TRANSMITTER_TUNING:
         run_aux_function(ch_option, ch_flag, AuxFuncTriggerSource::INIT);
         break;
     default:
@@ -648,6 +649,9 @@ bool RC_Channel_Copter::do_aux_function(const AUX_FUNC ch_option, const AuxSwitc
         break;
     }
 #endif
+    case AUX_FUNC::TRANSMITTER_TUNING:
+        // do nothing, used in tuning.cpp for transmitter based tuning
+        break;
 
     default:
         return RC_Channel::do_aux_function(ch_option, ch_flag);

libraries/RC_Channel/RC_Channel.cpp

@@ -247,6 +247,7 @@ const AP_Param::GroupInfo RC_Channel::var_info[] = {
     // @Values{Plane}: 210:Airbrakes
     // @Values{Rover}: 211:Walking Height
     // @Values{Copter, Rover, Plane}: 212:Mount1 Roll, 213:Mount1 Pitch, 214:Mount1 Yaw, 215:Mount2 Roll, 216:Mount2 Pitch, 217:Mount2 Yaw
+    // @Values{Copter}: 219:Transmitter Tuning
     // @Values{Copter, Rover, Plane}: 300:Scripting1, 301:Scripting2, 302:Scripting3, 303:Scripting4, 304:Scripting5, 305:Scripting6, 306:Scripting7, 307:Scripting8
     // @User: Standard
     AP_GROUPINFO_FRAME("OPTION",  6, RC_Channel, option, 0, AP_PARAM_FRAME_COPTER|AP_PARAM_FRAME_ROVER|AP_PARAM_FRAME_PLANE|AP_PARAM_FRAME_BLIMP),

libraries/RC_Channel/RC_Channel.h

@@ -271,6 +271,7 @@ public:
         MOUNT2_PITCH =       216, // mount3 pitch input
         MOUNT2_YAW =         217, // mount4 yaw input
         LOWEHEISER_THROTTLE= 218,  // allows for throttle on slider
+        TRANSMITTER_TUNING = 219, // use a transmitter knob or slider for in-flight tuning
 
         // inputs 248-249 are reserved for the Skybrush fork at
         // https://github.com/skybrush-io/ardupilot