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Altera_Forum's avatar
Altera_Forum
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15 years ago

DMA transfer inside ISR: Problem

Hi everybody, I think this is a common issue, but I didn't find a solution to my question, so hopefully I will get an answer here: I have a DMA controller which I want to use on an IRQ com...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Hi,

--- Quote Start ---

alt_ic_isr_register( DMA_IRQ_INTERRUPT_CONTROLLER_ID,

DMA_IRQ,

DMA_isr,

DMA_BASE,

NULL);

--- Quote End ---

I guess DMA_IRQ_INTERRUPT_CONTROLLER_ID is the id of your VIC?

Why do you use DMA_BASE as isr_context? Don't do that. DMA_BASE is not a memory region.

Have you maybe enabled a seperate exception stack?

Regards