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Altera_Forum
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20 years ago

DMA & Interrupt Problems...

I'm a newbie in Nios, and my English is not to good, but in this forum i found some topics to control NiosII device like pio, timer, uart by Nios syntax, but few topic about to teach me about dm...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Hi ucliane,

It is great that you read the LDD book.

It seems you mixed up the kernel space and user space.

Please read LDD from beginning.

Another (old) advice, do it on Linux. follow the thread

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

Then, you should try out the hello world module in ch2 of LDD.

Next, take a look at some kernel codes, eg,

arch/nios2nommu/kernel/time.c

drivers/serial/NIOSserial.c .

Finally back to your own code.