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Altera_Forum
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15 years ago

TSE, nichestack tx from fixed location

i am using a design example where the tx sgdma is getting its data from an sdram. i start it all with the sendto() function. problem is the data i want to send comes from a fifo, and so it seems a de...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Thanks, i will. but thats not what i meant. I want to use the DMA, only instead of making it get data from a memory, i would like it to read from a fixed location. more spesific a onchip fifo. is this possible?

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You can send directly data to the MAC without going through the DMA, but then you need to bypass the nichestack and generate all the Ethernet packet in hardware.

Have a look at the nios ii udp offload example (http://www.alterawiki.com/wiki/nios_ii_udp_offload_example).

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