No complete interrupt from EDMA3

Serhii Marchuk

Hi,

Can you please help me with the following problem: EDMA3 doesn't send an interrupt after DMA transfer is complete.

My program copies data from DDR3 to DDR3 using EDMA3. I use EDMA3 driver API, DrvSample for edma3init functions and platform configs. Everything goes in same way as in edma3_lld examples.

When I use polling (EDMA3_DRV_waitAndClearTcc) instead of waiting for the interrupt it works correctly and data is copied from one place to another.

Tested on TMDSEVM6678LE. Demo project is attached.

Regards

edma3_test.zip

over 12 years ago

0 Serhii Marchuk over 12 years ago

Prodigy 60 points

Any Ideas?

0 Xiaohui Li over 12 years ago in reply to Serhii Marchuk

TI__Intellectual 1870 points

Hi,

The original example that comes from EDMA LLD works for both polling and interrupt callback modes. Did you try the original example? Could you compare yours with the original example?

Xiaohui

0 Serhii Marchuk over 12 years ago

Prodigy 60 points

I found reason. The event combiner settings are required for interrupts. This settings was miss in app.cfg.

ECM.eventGroupHwiNum[0] = 7;
ECM.eventGroupHwiNum[1] = 8;
ECM.eventGroupHwiNum[2] = 9;
ECM.eventGroupHwiNum[3] = 10;

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No complete interrupt from EDMA3