Using one RPI2 as a serial terminal for a second RPI2

[Paul Mather]

On Mar 22, 2016, at 11:41 PM, Tim Kientzle <tim at kientzle.com> wrote:

> On Mar 22, 2016, at 6:24 PM, bob prohaska <fbsd at www.zefox.net> wrote:
>> 
>> 
>> Is there a way to operate an RPI2  single user with the HDMI monitor
>> and a USB keyboard?  
>> 
>> Is it practical to cross-connect the UART pins and use cu on one RPI2 to 
>> communicate with a second? 
> 
> Should work fine.
> 
>> 
>> 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. 
>> 
> 
> 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 



Cheers,

Paul.