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12748 Discussions

DMA

Altera_Forum
Honored Contributor II
‎02-03-2007 06:39 PM
1,144 Views

Hello!  

I'm developing my custom peripheral component, wich operates with standard DMA from SOPC Builder. DMA should send data from SDRAM to my component. When my pheripheral component set to 1 endofpacket signal, transmition stops. But when my peripheral set to 0 endofpacket and set to 1 readyfordata nothing is happened. Why? How my component can continue data transmition? 

Thanks a lot!
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Altera_Forum
Honored Contributor II
‎02-05-2007 08:14 PM
449 Views

If the DMA controller is set up to stop on end-of-packet then you have to restart the DMA operation by setting the "GO" bit in the control register. You would normally do this from the CPU although I suppose any component that's an Avalon master could access the DMA controller's registers. 

 

Andrew
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Altera_Forum
Honored Contributor II
‎02-06-2007 04:25 PM
449 Views

Thank you, Andrew, I settle this problem

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