Fix issue #48

source/EV3.m

@@ -170,7 +170,8 @@ classdef EV3 < MaskedHandle
 
             if ev3.isConnected
                 if isCommInterfaceValid(ev3.commInterface)
-                    error('EV3::connect: Already connected.');
+                    warning('EV3::connect: Already connected. Resetting connection now...');
+                    ev3.disconnect();
                 else
                     warning(['EV3::connect: EV3.isConnected is set to ''True'', but ',...
                              'comm handle is invalid. Deleting invalid handle and ' ,...
@@ -242,7 +243,15 @@ classdef EV3 < MaskedHandle
             %     % do stuff |br|
             %     b.disconnect(); % |br|
             
+            % Resetting needs a working connection in order to send reset-commands
+            % to the Brick. If the connection has been aborted (e.g. by pulling the
+            % USB-cord), the reset-methods would fail -> catch this error and for
+            % now do nothing.
+            try
                 ev3.resetPhysicalBrick();
+            catch ME
+                % For now: ignore
+            end
 
             % Disconnect motors and sensors
             % -> set references to comm handle to 0