Re: Regarding USB-to-Serial device driver

Alan Stern
2010-09-13T13:56:28Z

On Mon, 13 Sep 2010, Raju Rameshwar Uprade wrote:

> Ya I tried with debug=1 on the modprobe line.
>
> > > f6e80c00 4108452201 C Bo:7:003:2 0 1 >
> > > f6e80900 4108453203 C Ii:7:003:1 0:1 10 = a1200000 00000200 0000
>
> same status bytes I am also getting.
> One thing I would like to ask why it is coming on Ii (Isochronous endpoint)?

"Ii" is Interrupt-IN, not Isochronous-IN. usbmon uses 'Z' for
isochronous.

> output of usbmon tell that data going out properly, but it's going in chunks,Ideally It
> should go out in one chunk.I think I have to take care of RTS line. UART drivers works
> in that way,RTS is enabled for complete data out ,then it is disabled so that we can get
> device response.

Maybe your program writing the data in chunks.

Alan Stern