imran30682@gmail.com wrote:

>I am trying to create usb device file with the following code
>
> ttyDevCreate ("/tyCo/3\0", NULL, 512, 262144);

ttyDevCreate() creates devices for serial channels rather than USB.

>open("/tyCo/3\0", 0, 0);
>
>I am getting exception.

This is not a surprise. That NULL you provided as the second parameter of
ttyDevCreate() is supposed to point to an SIO_CHAN structure. This stucture
is accessed when you call open() and either elements of the structure itself
or where members of the structure point are invalid memory locations.

>More insight into the code .
>===================
>
>Whenever I insert the USB the following msg is displayed on the
>hyperterminal
> /bd0 Bulk device is created
>
>I doubt the name which specified during the ttyDevCreate.

Yes, and you should as it cannot be a valid device.

>I dont know what name has to be given to create the usb device.

It is "/bd0" as displayed on your console (hyperterminal).

>Regards,
>Imran

For future reference: always sepcify the versions of VxWorks and Tornado/
Workbench you are using as well as the target architecture and toolset
when posting questions.

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Michael Kesti | "And like, one and one don't make
| two, one and one make one."
mrkesti at hotmail dot com | - The Who, Bargain