Description
Set the alternate setting of an interface.
Files
usbdev_api.c
Prototype
Arguments
dev
General handle to device.
if_nbr
Interface number.
alt_set
Alternate setting number.
p_err
Pointer to variable that will receive the return error code from this function:
ERROR_SUCCESS
ERROR_INVALID_HANDLE
ERROR_INVALID_PARAMETER
Returned Value
None.
Callers
Application.
Notes / Warnings
This function sends a SET_INTERFACE request to the device to set the alternate setting number and updates the one used internally by WinUSB.