Re: How to access correctly serial port inside module?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Jan Engelhardt schrieb:
On May 24 2007 12:22, Lars K.W. Gohlke wrote:
ok, I have read everything and also have read the chapters about
tty_drivers. However I'm not really understand, how to ... .

I will summarize the concrete scenario, which will lead to the
understanding and further solution of deadling with serial driver.

[scenario]

1. in userspace I'm doing: > date > /dev/ttyS0
2. in kernelspace I want to print out this date.

[/scenario]

I'm really new to kernel coding, that's why I maybe understand some
functions not the proper way.

I'm a bit confused.

So am I. Usually, you connect two different machines with a serial cable.
(Leaving out the special case of connecting ttyS0-ttyS1 on the same machine.)

This poses the first question: whose kernelspace? the sender or
the receiver side? And by "this date" do you perhaps mean
"whatever was sent", or specifically a date? And print to _where_?

Up to now, it looks like you want to do "cat </dev/ttyS0" in-kernel.


	Jan

date is an example

and you got it, I want to do "cat </dev/ttyS0" in-kernel.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.3 (MingW32) - GPGrelay v0.959

iD8DBQFGVWy0AAomYJ1taN8RAu7/AJ9+1irJURFy5KFy/wzHqSXXD5sRgACfSi49
ec5AnOQoTz2nCt//siaiTNs=
=uj4G
-----END PGP SIGNATURE-----
begin:vcard
fn:Lars K.W. Gohlke
n:Gohlke;Lars K.W.
email;internet:[email protected]
x-mozilla-html:FALSE
version:2.1
end:vcard


[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux