Re: [avrdude-dev] jtag2 and usb timeout

[Joerg Wunsch]

As Dave N6NZ wrote:

> Since this was smelling very much like a timing issue, I tried the
> expedient solution: a hub. (D-Link DUB H-7 USB 2.0, FWIW).

> Instant success! (at least at reading fuses, see below).

I wouldn't have guessed *that*.

I'll try that next time I've got access to that laptop.

> The USB folks are going to tell me to upgrade to a 2.6 kernel before
> taking any bug report seriously.

I think our systems at work are running (moderately recent) 2.6.x
kernel versions.

> Actually, thinking now about your BSD problem, since both the usb
> libraries and the kernel are different, that would seem to point the
> finger at the Atmel USB implementation.

No, the libusb/FreeBSD issue is different.  The FreeBSD USB
implementation offers an option to accept partial replies (less than
requested), and libusb really should set this option but doesn't by
default (at least it didn't in version 1.10a, haven't looked at the
recent versions).

Just checked 1.12, it's fixed there.

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)