I would like to write a program to communicate directly to the Dongle over USB. The plan is for manufacturing test fixtures to communicate with the 'device under test' over BLE. They would connect to a service and perform test operations. Is there an API over USB to the Dongle so I can get the basic operations that are also found in the nRFConnect; connect, discover services, read, write, and disconnect? Or in other words, how does nRFConnect get its functionality?
Looking at this link. Seems their issue was not resolved. Users want an interface where we can write a Windows app with the dongle. Can you share the nRFConnect code. That is a Windows app.
I am sorry, but nRFConnect was made as a tool for developers, and is not an example meant to be modified, so the source code is not available I'm afraid.