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Altera_Forum
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10 years ago

Altera SGDMA & TSE

Hi all, I am working on TSE and is using sgdma for avalon_stream_to_mem descriptor, now in my code I have four descriptors,I am receiving network packets in my local buffer from sgdma in every sgd...
Altera_Forum's avatar
Altera_Forum
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10 years ago

Hi,

I tried accumulating multiple raw frames and wrap'em with usb header and trailer, but it adds latency while ping, one more issue is that my USB can't cope up with the speed with received frames frequency as from the beginning Rx interrupt hits very fast and so my queue gets full so data packets are dropped. Can you please tell me that how to handle this kind of situation when your up flow is polling based and down flow is interrupt based? And how these stacks like lwip or nichestack handles data as in all of them reception is sgdma interrupt based?