I know that there are a few examples using WinUSB vs CyUSB, but I cannot seem to find one that specifically addresses how to get MSOS Extended Properties Description functions working. I am wanting to add a GUID such that when the device enumerates, it will enumerate with the GUID.
I already have it such that when I plug the device in, I can get it to load the WinUSB using the MSOS Descriptor, and the USB Configuration Descriptor changed from CYUSB to WINUSB. I can query the registry of the computer, and I find that the device has been enumerated.
I found a project a long while back, though I cannot state where I found it now, that had indicated that it solved this, but after picking the project back up, I realize that it did not fix this issue. This was debugged by going into the computer registry and manually adding the GUID. Once this was done, my C# application could pick this device and begin to communicate with it.
In the USBFS_descr.c file that I have been using, it attempts to do this by adding the following:
#if defined(USBFS_ENABLE_MSOS_STRING)
/******************************************************************************
* USB Microsoft OS String Descriptor
* "MSFT" identifies a Microsoft host
* "100" specifies version 1.00
* USBFS_GET_EXTENDED_CONFIG_DESCRIPTOR becomes the bRequest value
* in a host vendor device/class request
******************************************************************************/
const uint8 CYCODE USBFS_MSOS_DESCRIPTOR[USBFS_MSOS_DESCRIPTOR_LENGTH] = {
/* Descriptor Length */ 0x12u,
/* DescriptorType: STRING */ 0x03u,
/* qwSignature - "MSFT100" */ (uint8)'M', 0u, (uint8)'S', 0u, (uint8)'F', 0u, (uint8)'T', 0u,
(uint8)'1', 0u, (uint8)'0', 0u, (uint8)'0', 0u,
/* bMS_VendorCode: */ USBFS_GET_EXTENDED_CONFIG_DESCRIPTOR,
/* bPad */ 0x00u
};
/* Extended Configuration Descriptor */
const uint8 CYCODE USBFS_MSOS_CONFIGURATION_DESCR[USBFS_MSOS_CONF_DESCR_LENGTH] = {
/* Length of the descriptor 4 bytes */ 0x28u, 0x00u, 0x00u, 0x00u,
/* Version of the descriptor 2 bytes */ 0x00u, 0x01u,
/* wIndex - Fixed:INDEX_CONFIG_DESCRIPTOR */ 0x04u, 0x00u,
/* bCount - Count of device functions. */ 0x01u,
/* Reserved : 7 bytes */ 0x00u, 0x00u, 0x00u, 0x00u, 0x00u, 0x00u, 0x00u,
/* bFirstInterfaceNumber */ 0x00u,
/* Reserved */ 0x01u,
/* compatibleID - "CYUSB\0\0" */ /*(uint8)'C', (uint8)'Y', (uint8)'U', (uint8)'S', (uint8)'B',
0x00u, 0x00u, 0x00u,*/
/* compatibleID - "CYUSB\0\0" */ (uint8)'W', (uint8)'I', (uint8)'N', (uint8)'U', (uint8)'S', (uint8)'B',
0x00u, 0x00u,
/* subcompatibleID - "00001\0\0" */ /*(uint8)'0', (uint8)'0', (uint8)'0', (uint8)'0', (uint8)'1',*/
0x00u, 0x00u, 0x00u, 0x00u, 0x00u, 0x00u,0x00u, 0x00u,
/* Reserved : 6 bytes */ 0x00u, 0x00u, 0x00u, 0x00u, 0x00u, 0x00u
};
const uint8_t USBFS_MSOS_EXTENDED_PROPERTIES_DESCR[USBFS_MSOS_EXT_PROP_DESCR_LENGTH] =
{
// Header Section
/* Length of the descriptor 4 bytes */ 0x8E,0x00,0x00,0x00, /* dwLength: 142 = 10 + 132 */
/* Version of the descriptor 2 bytes */ 0x00,0x01, /* bcdVersion: The descriptor’s version number */
/* wIndex - Fixed:INDEX_CONFIG_DESCRIPTOR */ 0x05,0x00, /* wIndex: Extended property OS descriptor */
/* bCount - Count of device functions. */ 0x01,0x00, /* bCount: Number of properties */
// Custom Property Section 1
/* dwSize: */ 0x84,0x00,0x00,0x00, /* dwSize: 132 = 14 + 40 + 78 */
/* dwPropertyDataType: */ 0x01,0x00,0x00,0x00, /* dwPropertyDataType: A NULL-terminated Unicode String (REG_SZ) */
/* wPropertyNameLength: 40 */ 0x28,0x00, /* wPropertyNameLength: 40 */
/* bPropertyName: "DeviceInterfaceGUID" */ 'D',0x00,'e',0x00,'v',0x00,'i',0x00,'c',0x00,'e',0x00,
'I',0x00,'n',0x00,'t',0x00,'e',0x00,'r',0x00,'f',0x00,'a',0x00,'c',0x00,'e',0x00,
'G',0x00,'U',0x00,'I',0x00,'D',0x00,
0x00,0x00,
/* dwPropertyDataLength: 78 */ 0x4E,0x00,0x00,0x00,
/* bPropertyData: "{01234567-2A4F-49EE-8DD3-FADEA377234A}" */
'{',0x00,
'0',0x00,'1',0x00,'2',0x00,'3',0x00,'4',0x00,'5',0x00,'6',0x00,'7',0x00,'-',0x00,
'2',0x00,'A',0x00,'4',0x00,'F',0x00,'-',0x00,
'4',0x00,'9',0x00,'E',0x00,'E',0x00,'-',0x00,
'8',0x00,'D',0x00,'D',0x00,'3',0x00,'-',0x00,
'F',0x00,'A',0x00,'D',0x00,'E',0x00,'A',0x00,'3',0x00,'7',0x00,'7',0x00,'2',0x00,'3',0x00,'4',0x00,'A',0x00,
'}',0x00,
0x00, 0x00
};
#endif /* USBFS_ENABLE_MSOS_STRING */
There is also a definition of USBFS_MSOS_EXT_PROP_DESCR_LENGTH in USBFS.h.
My guess is that there is nothing that invokes the array of USBFS_MSOS_EXTENDED_PROPERTIES_DESCR to pass it to the system, but I am not sure where I need to be looking to get this to get passed to the OS at the appropriate time.
Any help would be appreciated.
