On Wed, Aug 3, 2011 at 11:17 AM, Michael Plante
<michael.plante@xxxxxxxxx> wrote:
> Joachim Schambach wrote:
>>> I am not totally sure how to interpret usbmon output, but it looks like all
>>> packets that I am requesting are actually going out.
>
> I am not either. I just know that's an intermediate troubleshooting step.
> There are several people on the libusb list who can help interpret it. I
> recommend writing there if no one gets back to you in a few days here.
Good suggestion. Alan Stern, for one, will help to decode the
usbmon log pretty fast.
On the other hand, the usbmon does not seem to tell much if I try to
follow the usbmon.txt to parse the log.
http://www.mjmwired.net/kernel/Documentation/usb/usbmon.txt
So maybe the problem is on the FPGA side.
f62a4140 770501648 S Co:007:00 s 40 00 0000 0000 0000 0
f62a4140 770501720 C Co:007:00 0 0
http://lxr.linux.no/#linux+v3.0/drivers/usb/serial/ftdi_sio.h
Vendor specific request, FTDI_SIO_RESET, Reset
Status ok
f62a4140 770502123 S Co:007:00 s 40 03 4138 0001 0000 0
f62a4140 770502217 C Co:007:00 0 0
Vendor specific request, FTDI_SIO_SET_BAUDRATE
Status ok
f62a4140 770502454 S Ci:007:00 s c0 90 0000 0043 0002 2 <
f62a4140 770502592 C Ci:007:00 0 2 = 0000
f62a4140 770502603 S Ci:007:00 s c0 90 0000 0044 0002 2 <
f62a4140 770502717 C Ci:007:00 0 2 = 0000
Vendor specific request, FTDI_E2ROM_READ
(ftdi_read_chipid).
Status ok
d89e87c0 841791213 S Bo:007:02 -115 100 = 00010203 04050607 08090a0b 0c0d0e0f
10111213 14151617 18191a1b 1c1d1e1f
Bulk Out transfer submission, device 7, EP 2 Out, 100 bytes of data,
only partially (up to 32bytes, from 0x00 to 0x1f) displayed.
d89e87c0 841792086 C Bo:007:02 0 100 >
Bulk Out transfer completion, device 7, EP 2 Out, 100 bytes of data,
status ok (means bulk out transfer is successful).
d89e87c0 841793348 S Co:007:00 s 01 0b 0000 0000 0000 0
d89e87c0 841794086 C Co:007:00 0 0
This is a standard set_interface request (select interface 0)
when the device is closed.
--
Xiaofan
--
libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
To unsubscribe send a mail to libftdi+unsubscribe@xxxxxxxxxxxxxxxxxxxxxxx
|
