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makedev is obsolete.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.
From 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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