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Re: [Discuss-gnuradio] FPGA Images on Ettus E310

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] FPGA Images on Ettus E310
Date: Thu, 13 Oct 2016 11:26:52 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0

Hi John,

they are on the SD Card just because the default method of getting them
downloads a whole bunch of images.

An FPGA image is 100% specific to exactly the FPGA and connections. The
N210's FPGA and the Zynq's PL aren't even similar; this can't work out,
you can't even successfully load such an image.

I generally like to compare FPGAs to "empty" factories with a stock of
electrical wire, switches, pipes, hydralic actuators, motors, conveyor
belts, as well doors and chutes in fixed places in the walls, and a
couple of machines installed in fixed places on the floor. The FPGA
image is nothing but a photo that exactly defines how to lay out your
connections stock, square millimeter by square millimeter, and where to
place switches etc to build something useful.

Every different FPGA model is a different factory: it has a different
building size, different machines, different doors, different electrical
wiring standards, the pipes can withstand different pressure and so on.
That won't do.

Best regards,


On 10/13/2016 10:59 AM, John B. Wood wrote:
> Hello, all.  In the /usr/share/uhd/images directory on the ARMv7
> processor (p/o of the E310 and running Xilinx Linux) there are a
> number of FPGA images for ostensibly other architectures besides the
> E310.  If another of these, say one of the several ones for an N210
> device are loaded into the E310's FPGA will it behave like an N210
> (keeping in mind that the N210 doesn't contain an integral processor
> running Linux)?  Thanks for your time and comment. Sincerely,

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