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Altera_Forum's avatar
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

I haven't tested DMA myself but for IRQ you can just use the linux kernel functions.

With a call to request_irq you can register your Interrupt service routine.

Make sure to do this from kernel-space (a kernel module or compiled in the kernel) "normal" userspace programs can't (and shouldn't) recieve IRQ's.

Iirc someone on this forum uses the kernel functions for DMA-transfers, maybe you can find the thread.

Greetz wgoossens

P.S.: Don't worry about your english!