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Tilman Schmidt schrieb:
Am 24.05.2007 12:22 schrieb Lars K.W. Gohlke:
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 must admit that now I do not understand anything anymore.
I thought you wanted to receive some data over an RS232 serial
port and process it in your kernel module, but this doesn't
look like that at all.
So what is it you are trying to do?
Do you just want to write something to a file in userspace and
receive it in your kernel module?
I want to read from serial port (I mean the port, which is called
/dev/ttyS0 in user-space). Then I want copy_to_user() it through
/proc/serialPort
This is just to get familiar with driver programming (in kernelspace),
it could be better done in userspace - I know. But this is for learning.
It is a kind of synthetic problem, but after this, I hope too know how
to handle further ones.
Understood? It is a little bit strange, but hope it is explained well. ;)
If tell me that for /dev/ttyS0 I can adept it to /dev/ttyS1 etc..
thx
Regards,
Tilman
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