I have a USB that gives access GPIO pins. In my understanding the pins can be controlled with android kernel method static int SetGpo(struct usbnet * dev, u32 Gpo, u32 State); (Github). I'm wondering how could I access this method from an app and control the pins?
I don't have experience in things under the android app layer so it's hard for me to know where to start. Some sources I found mentioned that I need a rooted device.
