Date: Wed, 23 Mar 2016 09:30:47 -0400 From: Paul Mather <paul@gromit.dlib.vt.edu> To: freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: Using one RPI2 as a serial terminal for a second RPI2 Message-ID: <819B54EA-899A-40A0-9057-DDA94A88406C@gromit.dlib.vt.edu> In-Reply-To: <69EA3E96-4182-49B2-88AA-E885CF344BCB@kientzle.com> References: <20160323012413.GA86944@www.zefox.net> <69EA3E96-4182-49B2-88AA-E885CF344BCB@kientzle.com>
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On Mar 22, 2016, at 11:41 PM, Tim Kientzle <tim@kientzle.com> wrote: > On Mar 22, 2016, at 6:24 PM, bob prohaska <fbsd@www.zefox.net> wrote: >>=20 >>=20 >> Is there a way to operate an RPI2 single user with the HDMI monitor >> and a USB keyboard? =20 >>=20 >> Is it practical to cross-connect the UART pins and use cu on one RPI2 = to=20 >> communicate with a second?=20 >=20 > Should work fine. >=20 >>=20 >> If not, is there a USB-to-3.3v UART adapter which >> uses existing FreeBSD drivers? Amazon.com is full of cables, but most >> speak only of Windows and Mac OS X.=20 >>=20 >=20 > The common Adafru.it/954 cable works fine with a FreeBSD host. I have one of those and it uses the Prolific chipset. It works fine = under FreeBSD/amd64 10-STABLE. It attaches using the uplcom(4) driver: ugen2.2: <Prolific Technology Inc.> at usbus2 uplcom0: <Prolific Technology Inc. USB-Serial Controller, class 0/0, rev = 1.10/3.00, addr 2> on usbus2=20 Cheers, Paul.=
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