Dear all,
I am new to Mac and
IOKit. My sytem is Mac OSX 10.4, Xcode is 2.5
version.
I try to revise a sample code
which exists in /Developer/Examples/IOkit/usb to apply in my
Mass storage device.
This sample code
is "USBNotification Example" that access a usb device.
I have been success to execute
USBDeviceOpen, IOCreatePlugInInterfaceForService and QueryInterface
functions.
But when I want to
execute USBInterfaceOpen function, it is failed and return kIOReturnNotOpen
error code.
Because the USBDeviceOpen function can
be success to be executed, I think this is not Classic problem.
The interface seems to be opened by
other application. Where can I to check which application open this
Interface?
If the interface is opened by other
driver, how can I to access this device?
Thanks very much~~
Best Regards.
PS. Another no-related quest:
I try to execute USBInterfaceOpenSeize function, but build occurs
error:'struct IOUSBInterfaceStruct' has no member function
USBInterfaceOpenSeize is
available with IOUSBInterfaceInterface183 and above, and IOUSBInterfaceInterface183 are available on Mac OS X version 10.1 and
later.
So in my system, I should have the IOUSBInterfaceInterface183 definition.
How do I to revise this build
error??
Below is ioreg of my USB
mass storage device:
