[CentOS] resetting a serial port

Thu Dec 14 15:08:12 UTC 2023
Christer M. Fekjan <drift.CentOS.i02 at 3x9.no>

Typo correction:
ls -l /hello.txt # is it 6 bytes? (text+newline)

On Thursday 14 December 2023 16:06:13 Christer M. Fekjan wrote:
> On serial link type:
> echo hello >> /hello.txt
> 
> Via ssh:
> ls -l hello.txt # is it 6 bytes? (text+newline)
> cat /hello.txt
> # Anything in /var/log/messages or other logs?
> 
> Kind regards,
> Christer
> 
> On Thursday 14 December 2023 02:45:31 Robert Moskowitz wrote:
> > I have Centos 7 arm32 running on a Cubieboard and I am logged in as root
> > on its serial uart from another system.
> >
> > On that system I use
> >
> > screen /dev/ttyUSB0 115200
> >
> > Well it was working well for a couple days, but now only garbage comes
> > across.  Something messed up the serial link.
> >
> > pulling the usb cable to the usb/serial adapter does not reset things.
> >
> > I can ssh into the server and see root logged into ttyS0
> >
> > How do I reset that serial port so that I can work on the system?
> >
> > thanks
> >
> >
> >
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