Date: Mon, 20 Jun 2016 21:14:39 -0700 From: bob prohaska <fbsd@www.zefox.net> To: Hal Murray <hmurray@megapathdsl.net> Cc: freebsd-arm@freebsd.org, bob prohaska <fbsd@www.zefox.net> Subject: Re: pl2303 lockups on rpi2 Message-ID: <20160621041439.GA2449@www.zefox.net> In-Reply-To: <20160619034248.1D097406057@ip-64-139-1-69.sjc.megapath.net> References: <fbsd@www.zefox.net> <20160619020311.GC38492@www.zefox.net> <20160619034248.1D097406057@ip-64-139-1-69.sjc.megapath.net>
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On Sat, Jun 18, 2016 at 08:42:48PM -0700, Hal Murray wrote: > > > The Linux geeks have figured out how to use the "console" as a serial port. > It's used by the GPS HATs. If you are trying to get work done rather than > debug USB stuff, that might be an interesting approach. You would need a > level shifter if you are talking to a real RS232 device. > The goal is simply to let one Pi monitor the console of another, thus making single user mode accessible over a network. After a recent lockup on the usb-serial adapter, I was very surprised to find the pl2303ta "came unstuck" when the serial cable connecting to the console port on the next Pi in the chain was disconnected. No need to unplug the USB side. Thanks for reading, bob prohaska > >
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