* Re: [gentoo-user] Writing to tty01 (serial port) in simple straight forward way...?!?
@ 2014-10-12 15:42 99% ` Kerin Millar
0 siblings, 0 replies; 1+ results
From: Kerin Millar @ 2014-10-12 15:42 UTC (permalink / raw
To: gentoo-user
On 12/10/2014 13:08, meino.cramer@gmx.de wrote:
> Hi,
>
> I want to send commands to ttyO1 (serial port on an embedded system).
> The commands are one line each and terminated with CRL/LF (aka "DOS").
>
> Since this will be done from a batch script, it should be possible
> via commandline tools and non-interactively. The serial port is
> already setup up the right way.
>
> I tried
>
> echo -n"blablabal\x0a\x0d"
Firstly, this command is missing the -e switch. Secondly, the order of
the control characters is wrong. I would suggest the use of printf as it
has fewer pitfalls.
# printf '%s\r\n' "command"
--Kerin
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2014-10-12 12:08 [gentoo-user] Writing to tty01 (serial port) in simple straight forward way...?!? meino.cramer
2014-10-12 15:42 99% ` Kerin Millar
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