Strato Server PI FreeBSD 11.1 Release serial port comunication

[Ian Lepore]

On Mon, 2017-09-04 at 16:50 +0300, Stefan Parvu wrote:
> Hi guys,
> 
> I have installed FreeBSD 11.1 [1] under Strato Server PI [2], a
> Raspberry PI2 board plus
> goodies. FreeBSD 11.1 STABLE is booting fine. Now my problem is to
> connect to an
> indoor air quality sensor, plugged in to a RS485 connector and Im
> stuck in discovering whats 
> the correct serial port for that. I have tried /dev/cuau0 but with no
> success. 
> 
> root at k50dev:~ # ls -lrt /dev/cuau0*
> crw-rw----  1 uucp  dialer  0x2d Sep  4 12:22 /dev/cuau0.lock
> crw-rw----  1 uucp  dialer  0x2c Sep  4 12:22 /dev/cuau0.init
> crw-rw----  1 uucp  dialer  0x2b Sep  4 12:22 /dev/cuau0
> 
> I know all parameters set on the device level, baudrate, stopbits,
> parity since I have tried it under
> Raspbian and it is working fine there. Im basically using Kronometrix
> data recording rs485rec [3]
> fo that.
> 
> Any ideas how can I discover the port, and debug it somehow ?
> 
> thanks,
> Stefan
> 
> [1] http://ftp.freebsd.org/pub/FreeBSD/snapshots/ISO-IMAGES/11.1/Free
> BSD-11.1-STABLE-arm-armv6-RPI2-20170822-r322788.img.xz
> [2] https://www.sferalabs.cc/strato-pi/ 
> [3] https://github.com/kronometrix/recording/blob/master/bin/rs485rec
>  

I think /dev/cuau0 is the right device, but maybe the system is using
it as a console and has a getty active on the port.  Try editing
/etc/ttys and in this line:

ttyu0   "/usr/libexec/getty 3wire"      vt100   onifconsole  secure

Change "onifconsole" to "off".  That should leave the device free for
other software to access.

-- Ian