Instead, I encourage you to look at the working code in the get_interface_composite function of libusbp which does what you need to do: It takes a lot of effort to write up this code in standalone form, and test it, and debug it, so I will not be presenting you with a working code example. Look for a child whose device instance ID (retrieved with CM_Get_Device_ID) contains MI_xx where xx is the two-digit interface number you are looking for. The more standard way to find the filename in code is to use the SetupAPI and the configuration manager (CM) API to iterate through all the child devices of your USB device. I think you'd also need to modify the GUID at the end of the string, which is the device interface GUID. You might be able to just insert the appropriate &mi_xx string into your filename at the appropriate place and get it work. A filename that represents interface will have something like &mi_01 right after the product name, where 1 is the 0-based interface number. The filename you are using represents the overall USB device it doesn't represent any particular instance. How can I get this device id / path of the single USB devices inside a Composite USB device? So it a solution without a special driver must be possible. The app MyPhoneExplorer can access to my mobile. It's a GUID_DEVINTERFACE_USB_DEVICE device id for a Samsung Galaxy mobile with enabled USB debugging.Īs the driver Windows uses ssudbus2.sys, Version 2.17.16.0 () from Samsung Electronics Co. OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL) I'm using this code: _deviceHandle = CreateFile(ĭeviceId, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_NONE, NULL, I want to get a device id / path, which I can open with CreateFile to use the created HANDLE for opening a WinUsb handle with WinUsb_Initialize.īut if I try to open a Composite USB device with CreateFile, I get a ERROR_NOT_ENOUGH_MEMORY result.

Unfortunately, I can't find information how I can access the single devices of a Composite device. This Composite USB device bundles several interfaces: Enumeration of USB Composite Devices. On my Windows computer, I have a USB Composite device for the Android Mobile. I would like to send data from my Windows computer to my Android Mobile.įor this, I need to activate the Accessory mode of the Android device and the USB Host mode on the Windows device.

Usb composite device