WinUSB bulk in/out device #49
Description
I created an small embedded WinUSB device which offers 2 bulk endpoints. This device can communicate with Linux and with Windows10 without installing driver, or a .inf file. And it's not recognized as serial com port.
Now I try to build an embedded Linux gadget with your libusbgx. It must respond to OS_DESC (0xee) as WinUSB device. And must not be recognized as serial com port. It shall behave like a g_serial with param "use_acm=no"
If I build it with filesystem commands. Then the os_desc setting in Window10 it's recognized in registry settings
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbflags<VIDPID>
osvc = 01 bc
SkipContainerIdQuery = 01 00
But not recognized as WinUSB device
It looks like, the os_desc feature does only fully work for RNDIS.
This is the respond to vendor request, which works when I send it from my embedded WinUSB to Windows:
const U8 u8ExtendedCompatIDOSFeatDesc[] =
{
0x28, 0x00, 0x00, 0x00, /* dwLength Length of this descriptor / //(40 bytes)
0x00, 0x01, / bcdVersion = Version 1.0 /
0x04, 0x00, / wIndex = 0x0004 /
0x01, / bCount = 1 /
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, / Reserved /
0x00, / Interface number = 0 /
0x01, / Reserved /
0x57, 0x49, 0x4E, 0x55, 0x53, 0x42, 0x00, 0x00, //string = "WINUSB"
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, / subCompatibleID /
0x00, 0x00, 0x00, 0x00, 0x00, 0x00 / Reserved */
};
I tried with a modified example of your code:
myWinusbGadget.zip
diff:
winusb-diff.zip
I get error when trying to usbg_set_interf_os_desc() :
Error setting function OS desc
Error: USBG_ERROR_NOT_FOUND : Not found (file or directory removed)
How can I make it working for gser ? Is it possible with changing your src? Or do I have to change the kernel gadget files?
Can you help me to add this feature to your lib?