ArduCopter.pde: added call to set_manual_rc_channel to allow pilot's channel 6 to control pitch.

This initialisation code should be moved to init_ardupilot and/or into the AP_Mount library.

ArduCopter/ArduCopter.pde

@@ -1256,14 +1256,30 @@ static void fifty_hz_loop()
 
 #if MOUNT == ENABLED
 	static bool mount_initialised = false;
-	camera_mount.update_mount_position();
-	// enable camera servos.  TO-DO: move to AP_Mount library
+
+	// do camera mount initialisation.  TO-DO: move to AP_Mount library or init_ardupilot
 	if( mount_initialised == false ) {
 		mount_initialised = true;
+
+		// set-up channel 6 to control pitch
+		camera_mount.set_manual_rc_channel( &g.rc_6 );
+
+		// enable output channels
 		g.rc_camera_roll.enable_out_ch(CH_CAM_ROLL);
 		g.rc_camera_pitch.enable_out_ch(CH_CAM_PITCH);
 		g.rc_camera_yaw.enable_out_ch(CH_CAM_YAW);
 	}
+
+	// update pilot's commands to mount
+	if( g.radio_tuning == 0 ) {
+		camera_mount.set_manual_rc_channel_function( AP_MOUNT_MANUAL_RC_FUNCTION_PITCH );
+	}else{
+		camera_mount.set_manual_rc_channel_function( AP_MOUNT_MANUAL_RC_FUNCTION_DISABLED );
+	}
+
+	// update camera mount's position
+	camera_mount.update_mount_position();
+
 	// move camera servos.  TO-DO: move this to AP_Mount library
 	g.rc_camera_roll.output_ch(CH_CAM_ROLL);
 	g.rc_camera_pitch.output_ch(CH_CAM_PITCH);
@@ -1328,7 +1344,10 @@ static void slow_loop()
 			// -------------------------------
 			read_control_switch();
 
+			#if MOUNT == ENABLED
 			update_aux_servo_function(&g.rc_camera_roll, &g.rc_camera_pitch, &g.rc_camera_yaw);
+			#endif
+
 			// agmatthews - USERHOOKS
 			#ifdef USERHOOK_SLOWLOOP
 			   USERHOOK_SLOWLOOP