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Data transfer

Altera_Forum
Honored Contributor II
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After having captured data from an ADC and stored it to the SDRAM on the DE0-Nano, what's the best way to transfer this data to the PC?  

 

I am currently just sending it over the JTAG UART using printf commands, but this is very slow and because I have to use the nios2-terminal I can't do anything more low level. Presumably I would see a speed increase if I just used a UART out to the pins and then a serial-USB adapter. Does anyone have any other suggestions? 

 

Thanks 

 

Bert
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Altera_Forum
Honored Contributor II
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WIthout really doing much work, you could add the JTAG Avalon-MM Master and switch over to writing TCL scripts within system-console to directly grab the buffer contents out of SDRAM. 

 

http://www.alterawiki.com/wiki/system_console
Altera_Forum
Honored Contributor II
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Does anyone have any other suggestions? 

 

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Using the USB-Blaster as an Avalon-MM master is described in this tutorial; 

 

http://www.alterawiki.com/wiki/using_the_usb-blaster_as_an_sopc/qsys_avalon-mm_master_tutorial 

 

FTDI have a series of USB-to-FIFO and USB-to-UART cables that also work well. Using these cables allows you to avoid using any Altera tools for communications. 

 

http://www.ovro.caltech.edu/~dwh/correlator/pdf/ftdi.pdf 

 

http://www.digikey.com/product-detail/en/c232hm-ddhsl-0/768-1106-nd/2714139 

 

Cheers, 

Dave
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