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Altera_Forum
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15 years ago

IORD_ALTERA_AVALON_PIO_DATA to slow?

Hi, I'm trying to capture samples from an A/D Converter and streaming them onto a PC via an ethernet connection. I've extended the triple speed ethernet design example from the Nios II v9.1 instal...
Altera_Forum's avatar
Altera_Forum
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15 years ago

Yes, well it all sounds nice but I kind of have trouble putting the Ideas into practice. As I said, I'm still new to this kind of hardware development.

@Cris72: using my SGDMA seems like an effective way of transfering data from the PIO address to the TSE. I've constructed descriptors (although the instructions in the embedded peripheral IP user guide are not really clear) and I'm telling it to transfer 1518 Bytes to the Avalon-ST sink of the TSE. (1518 being the amount of payload bytes for one MAC-Frame).

How can I execute a transmit operation with the TSE??

So far I've used the send() function with my socket which sends a buffer of data. I have to get access to any place the DMA writes data to if I wanted to use the send() function.

@spaugh: never used a circular buffer before and no I idea how to dump data to the PC. Well there has to be some kind of conventional way to pass data to the PC from an ADC. How else would you do it?