Re: How to access correctly serial port inside module?

["Lars K.W. Gohlke" <lkwg82@gmx.de>]

[-- Attachment #1: Type: text/plain, Size: 1386 bytes --]

-----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-----

[-- Attachment #2: lkwg82.vcf --]
[-- Type: text/x-vcard, Size: 124 bytes --]

begin:vcard
fn:Lars K.W. Gohlke
n:Gohlke;Lars K.W.
email;internet:lkwg82@gmx.de
x-mozilla-html:FALSE
version:2.1
end:vcard