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Newsgroups: comp.os.linux.development.system
Date: Thu, 17 Feb 2022 06:51:06 -0800 (PST)
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Subject: Re: Reading serial port with BASH only
From: Juan Antonio Bacallado <juanantonio@centrosturisticos.com>
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Xref: csiph.com comp.os.linux.development.system:803

El mi=C3=A9rcoles, 22 de abril de 2009 a las 14:28:31 UTC+1, Tom=C3=A1=C5=
=A1 Kavalek escribi=C3=B3:
> Hi all,
> the solutions was very simple, and here it is:
> #!/bin/bash
> # Port setting
> stty -F /dev/ttyS1 raw speed 9600
> # Loop
> while [ 1 ]; do
> READ=3D`dd if=3D/dev/ttyS1 count=3D1`
> echo $READ
> done

Hi Tomas,

really works to read from serial, could you help me I want to do something =
on bash to read and act like a daemon all the time like keyboard input, rea=
d what nfc near and enter character... And also bash script to write on it,=
 i have tried

WRITE=3D`dd if=3Dcode of=3D/dev/ttyS0 count=3D1`

in code file is the number for example 051755F

thank you in advance.