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I wanna try writing a driver in C and I need some help.
Well, I know that the standard I/O can be done with output and inport functions but I really have no idea what arguments to pass, and that's it basically so I would like to have your help.
If you have built a driver, please post links that helped you writing this driver, or post your driver here.
I also would like you to give me ideas of different drivers to write.
Thanks.
I've never written a driver, but here are a couple links I found on Google:
How to Write a Windows Driver
Writing a Linux Driver
As for an idea of a driver to write, how about writing a Linux RAID driver for my ASUS P5K3 Deluxe motherboard? Windows can see the RAID configuration from the BIOS, but Linux just sees 3 separate HDs. And no, I won't volunteer to be a beta tester for it. ;)
Search for "DDK" and the name of whatever OS you're using.
Writing a driver is a ... difficult task. Are you sure you're up for it? You haven't exactly made the best impression with your knowledge of C.
But if you are willing, I can suggest that you use a virtual machine as your test platform because if your driver screws up... well, then you're going to crash your operating system, most likely. And cause other bad effects.
Good luck.
Actually I was thinking of plugging a led to a USB and turn the lights on and off so I don't think it would be difficult enough.Quote:
Originally Posted by Elysia
Anyways, do you have another good task that could improve my C skills?
While that sounds basic, I don't think writing a driver for it is trivial, because drivers are difficult...Quote:
Originally Posted by eXeCuTeR
I don't know how much you know and such, but there have been questions about exercises before... Why not do a search of the board? I'm sure you'll find something.Quote:
Anyways, do you have another good task that could improve my C skills?
Ever tried DDK in Windows?
Someone use it to monitor Process events, in this case for API hijacking (monitoring and fowarding) somewhere in CodeProject.
The source code looks complicated, and I've failed to find the reference, but maybe it's a good start.
Here's one good one for Windows:
http://www.codeproject.com/KB/system/driverdev.aspx
How are you planning on doing that? I'm going to assume you don't know embedded c programming that well, so you'll most likely be using a usb development board. In which case, drivers will be written for you.Quote:
Originally Posted by eXeCuTeR
You can't use the output and inport functions with usb. To turn a LED on/off via usb typically takes a few hundred lines of usb code on both the PC and the board controlling the LED.
With archaic serial and parallel ports, you could just strap an LED across a couple of pins, and to make it light up, all you would need is a couple of outport() instructions and you'd be good.
But USB is much more complex than that!
There's a whole series of steps which need to take place when you first plug a USB device into your machine (it's what makes all this plug-and-play work).
For USB hardware you can play about with, consider something like this (from your local supplier)
http://www.maplin.co.uk/module.aspx?...=42857&doy=6m7
Then read pretty much everything here - http://www.lvr.com/
http://www.linuxjournal.com/article/7353Quote:
Originally Posted by Mole42
I haven't read it yet but it seems to be what I'm looking for.
Simple usb device coupled with example usb driver code.
I'd say go for it, if your OS is Linux of course.
> I'd say go for it, if your OS is Linux of course.
That really doesn't make a difference...
Here is a link for a free online book. This gives you complete information about the device driver if your working linux platform.
http://www.xml.com/ldd/chapter/book/
ssharish