About WinUsb_ReadPipe

Now I'm developing an application for our USB device. I use WinUsb.sys for
the USB driver. The device is defined for using bulk read and bulk write
endpoints. I was succeded in installing WinUsb.sys on my system. I can see
the device infomation on registory and USBView.exe application as I designed.

The problem is that I was succeeded in using WinUsb_WritePipe(), but I was
failed in using WinUsb_ReadPipe(). When I call WinUsb_ReadPipe(), the
function never return or never complete I/O processing.

Any advice will be welcom. Thanks in advance.

Takashi Masuda
GCT

Takashi <> wrote:

>Now I'm developing an application for our USB device. I use WinUsb.sys for
>the USB driver. The device is defined for using bulk read and bulk write
>endpoints. I was succeded in installing WinUsb.sys on my system. I can see
>the device infomation on registory and USBView.exe application as I designed.
>
>The problem is that I was succeeded in using WinUsb_WritePipe(), but I was
>failed in using WinUsb_ReadPipe(). When I call WinUsb_ReadPipe(), the
>function never return or never complete I/O processing.

Are you sure the device has data for you to read?
--
Tim Roberts,
Providenza & Boekelheide, Inc.

Hi,

If you are using .Net you can use this component for Bulk devices
http://asyncop.com/MTnPDirEnum.aspx?...nUSB+Component

Regards,
Asaf