Exemple #1
0
func midi_init() error {
	var ctx libusb.Context
	err := libusb.Init(&ctx)
	if err != nil {
		return err
	}
	defer libusb.Exit(ctx)

	list, err := libusb.Get_Device_List(ctx)
	if err != nil {
		return err
	}
	defer libusb.Free_Device_List(list, 1)

	for _, dev := range list {
		dd, err := libusb.Get_Device_Descriptor(dev)
		if err != nil {
			return err
		}
		if dd.IdVendor == usb_vid && dd.IdProduct == usb_pid {
			fmt.Printf("found\n")
			break
		}
	}

	return nil
}
Exemple #2
0
func OpenDpf() (*DPF, error) {
	vid := uint16(AX206_VID)
	pid := uint16(AX206_PID)
	dpf := new(DPF)

	err := libusb.Init(&dpf.ctx)
	if err != nil {
		return nil, err
	}
	dpf.hasCtx = true

	dpf.udev = libusb.Open_Device_With_VID_PID(dpf.ctx, vid, pid)
	if dpf.udev == nil {
		return nil, fmt.Errorf("Failed to open device [%04x:%04x] (may be no permission?)", vid, pid)
	}
	dpf.hasUdev = true

	libusb.Set_Auto_Detach_Kernel_Driver(dpf.udev, true)

	if err = libusb.Claim_Interface(dpf.udev, AX206_INTERFACE); err != nil {
		return nil, fmt.Errorf("Can't claim interface: %v", err)
	}
	dpf.hasClaim = true

	return dpf, nil
}