You might want to search for DoExternalNaming on
microsoft.public.development.device.drivers Google group…
Slawomir
“Jan Halama” wrote in message news:xxxxx@ntdev…
Now I find out, that IoRegisterDeviceInterface returns SymbolicLinkName:
??\USB#Vid_067c&Pid_2304#5&1f8fd7d0&0&1#{86e0d1e0-8089-11d0-9ce4-08003e301f
73}
but I excepted that it would be COMx symbolic link.
I tried to open the device with this returned symbolic link and it works.
I’m able to send data to the device. So the device is exposed to usr-land
but how can I connect it with the COMx symbolic link?
Do I have to get the COMx link created by serenum.sys from registry and
create this link using IoCreateSymbolicLink?
> When I get a problem like this, I try to create the symbolic link to test
if
> it can properly be exposed to usr-land. Most of the time it is yes. Given
> that, something is wrong in your IoRegisterDevice…().
>
> -pro
>
> -----Original Message-----
> From: xxxxx@lists.osr.com
> [mailto:xxxxx@lists.osr.com]On Behalf Of Jan Halama
> Sent: Monday, July 26, 2004 1:19 AM
> To: Windows File Systems Devs Interest List
> Subject: [ntfsd] usb2serial driver
>
>
> Hi,
> I have an usb device for which I write a function driver. I used WinDDK
> bulkusb source code as base for my driver. I defined in inf file upper
> filter driver as serenum.sys.
> Driver instalation works fine. The device is installed and in device
> explorer I can see new serial port.
> Now I have a basic problem, I’m not able to open the com port using COMx
> device link.
> I couldn’t see any response in debug when I call API CreateFile function.
>
> I made this changes in the AddDevice routine:
>
> 1. IoCreateDevice
>
> ntStatus = IoCreateDevice(
> DriverObject,
> sizeof(DEVICE_EXTENSION),
> NULL,
> FILE_DEVICE_SERIAL_PORT, // I changed
DeviceType
> when creating device object
> FILE_DEVICE_SECURE_OPEN,
> TRUE,
> &deviceObject);
>
> 2. IoRegisterDeviceInterface
>
> ntStatus = IoRegisterDeviceInterface(
> deviceExtension->PhysicalDeviceObject,
> &GUID_CLASS_COMPORT, // I changed device
> interface GUID
> NULL,
> &deviceExtension->InterfaceName);
>
> How can I solve this problem?
>
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