Re: USB Buffer OverFlow

[Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>]

On Fri, 26 Oct 2007, Ankur wrote:

> Hi,
>     Is there any way to check whether the USB buffer is empty or not or the
> current command has been sent or not ?
>     I am doing this
>    sendControlMessage ();
>    system("usleep 8000");
>    sendControlMessage ();
> 
> this seems to be creating a problem with the device , the connection gets
> lost and device stops responding , is there any way to actually check
> whether the command in the buffer has been sent or not ?

It's kind of hard to answer this question since you don't explain what 
SendControlMessage() does.  The most natural approach would be for 
SendControlMessage() not to return until the message has been sent and 
the buffer is empty.

Alan Stern


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