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Subject: Re: We do serial differently.
From: Bob Bishop <rb@gid.co.uk>
In-Reply-To: <CACpH0Md0ckYH6k5ufAwCoc-_ThtJHrV9+dUtp66+SSjVuyhpxA@mail.gmail.com>
Date: Thu, 19 Oct 2017 11:03:46 +0100
Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org>
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To: Zaphod Beeblebrox <zbeeble@gmail.com>
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Hi,

> On 19 Oct 2017, at 05:25, Zaphod Beeblebrox <zbeeble@gmail.com> wrote:
>=20
> How does FreeBSD do serial differently than Linux or MacOS or Windows?

Quite likely only in the defaults when a port is opened.

> Now... this isn't _exactly_ serial, but the serial that is emulated by =
the
> arduino driver in ports.
>=20
> The issue is that running the arduino IDE works (and it boots with the
> loaded code), but then running 'pronterface'  fails to connect --- =
looking
> all-the-while like one-way communication.
>=20
> I see someone else basically having the same problem and claiming that
> hacking a trace (that affects the DTR response) on the arduino fixes =
it for
> FreeBSD (see https://plus.google.com/+MiroslavPrymek/posts/6TDdbuoNhzH =
)...
>=20
> Given this information, can I stty my way out of this problem?  Can I =
make
> a small modification to pronterface?

stty -clocal ...

might help.

All implementations of virtualised serial ports should (IMHO) provide a =
software =E2=80=98breakout box=E2=80=99 which is the only sure way of =
diagnosing this sort of problem.

--
Bob Bishop
rb@gid.co.uk