ResetDefaultEndpoint (Windows Embedded CE 6.0)
1/6/2010
This function attempts to reset the default endpoint zero.
Syntax
DWORD ResetDefaultEndpoint(
LPCUSB_FUNCS UsbFuncs,
HANDLE hUsbDevice
);
Parameters
- UsbFuncs
[in] Pointer to a USB_FUNCS structure.
- hUsbDevice
[in] Handle to a USB device.
Return Value
Microsoft® Win32® error code. For more information, see GetLastError.
Remarks
The following code example shows a trace where the default endpoint zero cannot be reset.
CQueuedPipe(Control)::CheckForDoneTransfers - failure on TD 0x1358c0, address = 1, endpoint = 0, errorCounter = 0, status field = 0x22
CFunction::SetOrClearFeature - recipient = 2, wIndex = 0, set/clear = 0x1, feature = 0x0, FAILED
CHub(Root tier 0)::HubStatusChangeThread - device on port 1 is connected but has been disabled. Trying to detach & re-attach
The following table shows the status field. It is a bitmask of bits 17-22 of the status field defined in the Universal Host Controller Interface (UHCI) Specification. This status information is sent from an endpoint of the downstream device.
| Bit | Description |
|---|---|
0x01 |
Bit stuffing error. |
0x02 |
Cyclic redundancy check (CRC) or time-out error. These two errors are indistinguishable. |
0x04 |
NAK handshake packet. You should not see this bit set in normal operation. |
0x08 |
Babble detected. |
0x10 |
Data buffer overrun. |
0x20 |
STALL handshake packet response. |
Requirements
| Header | usbclient.h |
| Windows Embedded CE | Windows CE 2.10 and later |