In the example link given in github am unable to detect my usb device using this example and moreover can anyone tell me how can I specify the device product id and vendor id to device_filter.xml. The main idea of mine to test this example is to connect a android device to a thermal printer POS using USB so first if this example detects my device I can further go ahead and use this library to have a handshake between my POS and android device.
Please help me if you have any other suggestion ideas.
Thanks