PROCESSOR-SDK-AM64X: dequeue, update the transfer information, queue does not work

Boshra

Tool/software:

Hi, I'm using R5F and using DMASS.

I have a transfer that I trigger, it works properly and the response is also successful. I dequeue the Transfer descriptor, update the number of bytes to transfer in the transfer descriptor, and queue the transfer descriptor again, and trigger the transfer, but the transfer does not happen. what is the problem here? Do I miss any other step?

thanks,

Boshra

1 month ago

0 Swargam Anil 1 month ago

TI__Mastermind 34620 points

Hello,

I am looking at your queries and you may expect reply in one or two days .

Regards,

Anil.

0 Swargam Anil 1 month ago in reply to Swargam Anil

TI__Mastermind 34620 points

Hello Boshra,

The above method seems ok for me but if you share the example I can look at it and provide suggestions.

In the second transfer, the DMA completion interrupt did not come ? or the DMA completion interrupt came, but the data is not available on the destination buffer?

Regards,

Anil.

0 Boshra 1 month ago in reply to Swargam Anil

Intellectual 418 points

Is it necessary to dequeue and queue again to update the number of bytes to transfer?

Thanks,

Boshra

0 Swargam Anil 1 month ago in reply to Boshra

TI__Mastermind 34620 points

Hello Boshra,

This is needed. We assume if we queue and started DMA and not completed previous transactions, but again we are updating TR for new bytes transfer and starting DMA again is not possible.

Regards,

Anil.

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PROCESSOR-SDK-AM64X: dequeue, update the transfer information, queue does not work