Date: Thu, 19 Oct 2017 12:33:48 -0400 From: Zaphod Beeblebrox <zbeeble@gmail.com> To: Ian Lepore <ian@freebsd.org> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: We do serial differently. Message-ID: <CACpH0MfaP%2B0BY-1VqbnTQXe9xtLpU3%2BopYaNpRQC1so0C5iKmw@mail.gmail.com> In-Reply-To: <1508425713.1383.6.camel@freebsd.org> References: <CACpH0Md0ckYH6k5ufAwCoc-_ThtJHrV9%2BdUtp66%2BSSjVuyhpxA@mail.gmail.com> <1508425713.1383.6.camel@freebsd.org>
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On Thu, Oct 19, 2017 at 11:08 AM, Ian Lepore <ian@freebsd.org> wrote: > > Use the "callout" device, /dev/cuaXX, rather than /dev/ttyXX (which is > the "callin" device). The callin device waits for a call to come in, > and that's implemented by blocking in open() until the modem/other-end > asserts DTR (or DSR, I can never remember which end is which). > > So if it's hanging with /dev/ttyU0 use /dev/cuaU0. > Is the reverse true? I have been using cuaU0.
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