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Re: How to access /dev/ttyS* ?
- From: Corinna Vinschen <corinna-cygwin at cygwin dot com>
- To: cygwin at cygwin dot com
- Date: Thu, 26 Apr 2012 22:04:51 +0200
- Subject: Re: How to access /dev/ttyS* ?
- References: <4F996E5A.email@example.com>
- Reply-to: cygwin at cygwin dot com
On Apr 26 11:48, Ryan Johnson wrote:
> Hi all,
> I'm trying to connect a VirtualBox guest's serial port to something
> that cygwin/gdb can access for remote debugging, and am having
> trouble connecting the pieces...
> One post from a couple of years ago  suggests using /dev/ttyS* to
> access COM ports. This would work great... except there are no
> /dev/ttyS* on my install.
If the VM has a virtual HW serial port configured, you should see a
/dev/ttyS0 entry. If it's not there, you didn't configure it. Cygwin
in the guest can only access what is available in the guest OS. If
there's a COM1, Cygwin has a /dev/ttyS0.
> The other VirtualBox option is to create a named pipe (as in Windows
> NPFS), and then wrap it into a pty using socat , but I can't
> figure out how to access such a pipe from cygwin -- the "\\.\pipe\*"
> path doesn't seem to be supported by cygpath and there's nothing
> obvious in /dev/.
I don't know how that's supposed to work, but you could try to
connect it via /proc/sys/Device/NamedPipe/<name-of-named-pipe>
No guarantee that it works, though.
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
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