I am trying to run your globalsat USB on a Nexus 7 (running Android 5.1.1) I have installed the USBGPS4DROID , and enabled 'mock locations.
I have not yet been able to get the tablet to 'discover' the satnav. Is there something else I should do? I have connected it to the tablet via a powered USB hub.
It would be great to have a detailed installation instruction.
Alternatively, if you can't help, can you send me a link to 'Herbert' who made the app, as presumably he'll be able to advise. I cannot find a way of contacting him (I've tried github, xdadevelopers forum and youtube).
ps there are only 4 fingers in a hand!