From mboxrd@z Thu Jan  1 00:00:00 1970
From: Raghav Gururajan <rvgn@disroot.org>
Subject: Re: PLEASE! Input Attach Service
Date: Sun, 30 Jun 2019 18:37:00 -0400
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To: Tobias Geerinckx-Rice <me@tobias.gr>
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> Just =E2=80=98cat /dev/ttySn=E2=80=99 will work, or something silly lik=
e =E2=80=98LANG=3DC=20
> sed s/./blah/g </dev/ttySn=E2=80=99 if you're bored and don't want to h=
ave=20
> to run =E2=80=98reset=E2=80=99 afterwards.
>=20
> Then use your pen and wait for output.

Thanks!

So I did "sudo cat /dev/ttyS4" in the terminal. After 10 seconds, the
cursor blinking stopped, then I touched the screen with the pen, it
started giving output non-stop. Like the output never stopped, I had to
close the terminal. Is this a good sign that my touch screen is
attached to serial port 4?

Regards,
RG.