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Date:      Mon, 24 Jan 2011 10:08:37 +1100
From:      Greg 'groggy' Lehey <grog@FreeBSD.org>
To:        Mike Adams <mike.adams2009@gmail.com>, Polytropon <freebsd@edvax.de>
Cc:        FreeBSD-questions@FreeBSD.org
Subject:   Re: Can't open serial line /dev/cuaa0: no such file or direcotry (2)
Message-ID:  <20110123230837.GA43766@dereel.lemis.com>
In-Reply-To: <20110121125125.7de151aa.freebsd@edvax.de> <5C1EBEF3-44BF-43C4-A654-9FF95103C5E2@transamtrucking.com>
References:  <5C1EBEF3-44BF-43C4-A654-9FF95103C5E2@transamtrucking.com> <20110121125125.7de151aa.freebsd@edvax.de> <5C1EBEF3-44BF-43C4-A654-9FF95103C5E2@transamtrucking.com>

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On Friday, 21 January 2011 at  0:04:12 +0000, Mike Adams wrote:
> To whom it may concern: I'm using a programme called tempcontrol
> from Greg Lehey on a Dell pentium running BSD 6.

Do you mean FreeBSD 6.x?  I'm assuming so in the following.

> When I run the programme, I get the above error.  ls /dev shows that
> there is no cuaa0, only cuad0.  I see that this was changed to
> standardize naming conventions.  I've tried sh makedev cuaa0, but
> get the errorCan't open makedev: no such file or directory.

makedev is obsolete.

> I should be most grateful if someone can get me over this problem

The device you're looking for is either /dev/ttyd0 or (probably)
/dev/cuad0.  Quite possibly either would work.  Set it in your
temperaturecontrolrc file.  Let me know if it works, and I'll update
the sources.

On Friday, 21 January 2011 at 12:51:25 +0100, Polytropon wrote:
> On Fri, 21 Jan 2011 00:04:12 +0000, Mike Adams <mike.adams2009@gmail.com>=
 wrote:
>
>> I've tried sh makedev cuaa0, but get the errorCan't open
>> makedev: no such file or directory.
>
> I think "sh MAKEDEV" would be the correct call.

=46rom MAKEDEV(8):

DESCRIPTION
     The MAKEDEV script was deprecated by devfs(5) and removed from FreeBSD
     after devfs(5) became mandatory.

Basically, it can't work because the meaning of major and minor
numbers has changed.

> You could try to add a line like
>
> 	link	cuad0	cuaa0
>
> to /etc/devfs.conf and then
>
> 	# /etc/rc.d/devfs restart

That would be the wrong solution.  Programs that come in source can be
modified, and in this case the program provides for alternative device
names.

> but I may be possible that the program you're intending to use does
> require the "conventional" serial driver ...

I'm not aware of any such program.

Greg
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