I have a arduino fio, that I borrowed from my university. So it is pre loaded with a sketch. So when I configure two new xbees series 2 modules, they are talking to each other. But when I try uploading a new sketch I get the ‘Serial Com Port already in use’ error.
So I check around to see why am I getting the error. There is nothing else connected to my ports and I have verified this with device manager. But then I saw the x-ctu terminal and there is bunch of data coming in. I believe this is why I am getting the error. So is there a way that I can free this port or stop the data from coming in so I can upload a new sketch.