Linux device driver and Interrupt

Okey I se the post:

http://forum.niosforum.com/forum/index.php?showtopic=3284 (http://forum.niosforum.com/forum/index.php?showtopic=3284)

http://forum.niosforum.com/forum/index.php?showtopic=3174 (http://forum.niosforum.com/forum/index.php?showtopic=3174)

The book I talked about is "Linux Device Drivers, 3rd Edition"

Can I add device driver after the kernel is compiled?

But It don't answer all my question

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originally posted by doofus64@Feb 11 2006, 03:43 AM

i have made my own sopc component with interrupt. this component are going to be used on an cyclone 2, with web server.

do i need to write a device driver in to uclinux to communicate with this component?

i have a 300 page book here on how to write device driver to linux.

is uclinux like linux when it comes to drivers?

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Yes, uClinux is a MMU-less Linux.

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As I have understood there are posibly to acess the I/O port simply by an user program, but is it possible to get the Interrupt to work with an user program?

(Okey, I maybe have the possibility to poll a flag or something, but I don&#39;t want the program to use cpu on that).[/b]

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You can poll, but you can not handle interrupt in user space.

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Does anybody know about information on how to write device driver to uClinux?

(code examples, tutorial, howto)[/b]

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You have the right book, and read it from the beginning.

You can look at the kernel sources and doc. You can find some tutorial on the web, too.

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How much time do I need to do the different things? I only have one month on me, to get this part up and running on an developmentboard. (This is one part of an bigger project)[/b]

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Follow my buildroot quide, you should be able to set up and run hello world module example in hours. It will take some time longer to learn to write driver, but it is not so difficult to get something working.

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Would it be an better alternative to use MicroC/OS-II, is it much easier to use. Does it have CGI?[/b]

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You&#39;d better use uClinux.

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Sorry for bad english.[/b]

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Don&#39;t worry.

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Can I add device driver after the kernel is compiled?[/b]

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Yes, you can. But you have to copy the compiled object to your rootfs, and no module dependency list will take care of it. So this is not prefered.

You should follow what we do in the hello world module.