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Altera_Forum's avatar
Altera_Forum
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15 years ago

DMA-controller doesn't generate an interrupt after changing the transaction type once

Hello, I realized that the dma-controller doesn't generate an interrupt the first time after I change the transaction type without resetting the core. But the transaction is done normally. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I did further tests.

Debugging the status register after a timeout of five seconds (!) makes clear that the BUSY bit is still set. The length register reaches zero.

Tha following transfer runs normally without any reset until I change the transfer type.

But the first transfer doesn't finish after changing the transfer type.

Can you confirm this?

Regards,

Frederik