Plane: fixes for Q_TRIM_PITCH

improved documentation and variable names

ArduPlane/quadplane.cpp

@@ -359,14 +359,15 @@ const AP_Param::GroupInfo QuadPlane::var_info2[] = {
     // @User: Standard
     AP_GROUPINFO("TAILSIT_THSCMX", 3, QuadPlane, tailsitter.throttle_scale_max, 5),
 
-    // @Param: TRIM_PIT
+    // @Param: TRIM_PITCH
     // @DisplayName: Quadplane AHRS trim pitch
-    // @Description: Compensates for the pitch angle trim difference between forward and vertical flight pitch, NOTE! this is relative to forward flight trim not mounting locaiton
+    // @Description: This sets the compensation for the pitch angle trim difference between forward and vertical flight pitch, NOTE! this is relative to forward flight trim not mounting locaiton. For tailsitters this is relative to a baseline of 90 degrees.
     // @Units: deg
-    // @Range: -180 +180
-    // @User: Standard
+    // @Range: -10 +10
+    // @Increment: 0.1
+    // @User: Advanced
     // @RebootRequired: True
-    AP_GROUPINFO("TRIM_PIT", 4, QuadPlane, quadplane_ahrs_trim_pitch, 0),
+    AP_GROUPINFO("TRIM_PITCH", 4, QuadPlane, ahrs_trim_pitch, 0),
 
     AP_GROUPEND
 };
@@ -557,7 +558,7 @@ bool QuadPlane::setup(void)
     AP_Param::load_object_from_eeprom(motors, motors_var_info);
 
     // create the attitude view used by the VTOL code
-    ahrs_view = ahrs.create_view_trim(rotation, (float)quadplane_ahrs_trim_pitch);
+    ahrs_view = ahrs.create_view(rotation, ahrs_trim_pitch);
     if (ahrs_view == nullptr) {
         goto failed;
     }

ArduPlane/quadplane.h

@@ -232,7 +232,7 @@ private:
     AP_Float transition_decel;
 
     // Quadplane trim, degrees
-    AP_Float quadplane_ahrs_trim_pitch;
+    AP_Float ahrs_trim_pitch;
 
     AP_Int16 rc_speed;