From: "Daniel Stonier" <d.stonier@gmail.com>
To: "Detlev Zundel" <dzu@denx.de>, linuxppc-embedded@ozlabs.org
Subject: Re: eldk and usb to serial converters
Date: Tue, 22 Apr 2008 13:23:57 +0900 [thread overview]
Message-ID: <27dfa3d0804212123i1085456bpbc6f39b75e005ff5@mail.gmail.com> (raw)
In-Reply-To: <m2r6cz45ki.fsf@ohwell.denx.de>
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Just discovered that this morning! Had made the assumption it was
automatically enabled, but only clued onto it when I noticed udevmonitor
wasn't giving only UEVENT output, not UDEV output. Should have been obvious,
but I kept barking up the wrong tree!
So, turning out to be a good chance to learn how the lower levels of a linux
system work and managed to learn exactly how udev works while stumbling on
this one.
Thanks for the reply
2008/4/21 Detlev Zundel <dzu@denx.de>:
> Hi Daniel,
>
> > I'm currently trying to compile a kernel for an AMCC440EP board within
> an eldk
> > environment. We've got a FTDI usb2serial converter we need to connect to
> the
> > board. Now I've compiled a kernel on a gentoo machine for this device
> and had
> > no problems. With this board, the kernel recognizes the device fine:
> >
> > ftdi_sio 1-1:1.0: FTDI USB Serial Device converter detected
> > usb 1-1: FTDI USB Serial Device converter now attached to ttyUSB0
> > drivers/usb/serial/ftdi_sio.c: v1.4.3:USB FTDI Serial Converters Driver
> >
> > but udev doesn't actually make the ttyUSB0 node. If anyone knows what
> may have
> > caused the problem and how to fix it, it'd be much appreciated.
>
> Maybe udev isn't running at all? The ELDKs including udev disable it
> per default (what version are you using?). Embedded systeme like to
> have static kernel configurations presenting no surprises at runtime...
>
> Cheers
> Detlev
>
> --
> Programming X-Windows is like trying to find the square root of pi
> using roman numerals.
> -- The UNIX Haters Handbook
> --
> DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu@denx.de
>
> _______________________________________________
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> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
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prev parent reply other threads:[~2008-04-22 4:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-18 0:04 eldk and usb to serial converters Daniel Stonier
2008-04-21 14:59 ` Detlev Zundel
2008-04-22 4:23 ` Daniel Stonier [this message]
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