I have been speaking with one of my friends and he give me suggestion that our GPS port is not occupied but it is non-standard one and it uses it's own protocol. Does someone know software that can read state of the ports and put results to logfile. Imagine: first we run this programm and then start official software and after a while we reboot and got logfile with request to and responds from GPS.
I think that the problem is that gps port is already 'busy', before the Navi software starts. But we could make some kind of trace/debug of the Navi.exe and find out how it grants access of gps port? The question is what and how to use? And is it possible.. And what would be the next step..
Hmm... maybe we could get gps port free if we could stop/restart 'gps port device' ?
I thought about Dotfred's TaskMgr and its 'Device Manager' - Start/Stop device, - Set automatic or manual, - Find device settings in registry. Worth a try...
Or maybe gps is used by some running service? (start-stop Service Manager)
Will take a look into this, this weekend..