Thank you guys, I just loaded the .bin file and it worked. Thought I had to use the .bit file instead. @Robin -- thanks. ISE generates the .bin file along with the .bit file so no need to use that.

Francesco

On 10/7/19 3:05 PM, Robin Coxe via USRP-users wrote:
You can convert your .bit file to a .bin file with this utility:
https://github.com/EttusResearch/uhd/blob/UHD-3.14/mpm/python/usrp_mpm/fpga_bit_to_bin.py

On Mon, Oct 7, 2019 at 12:02 PM Marcus D. Leech via USRP-users <[email protected] <mailto:[email protected]>> wrote:

    On 10/07/2019 11:19 AM, Francesco Restuccia via USRP-users wrote:
    > Hi all,
    >
    > I've built an N210 image using the source code provided by Ettus--
    >
    > When I try to burn the FPGA image onto the N210, though, I
    receive the
    > following error:
    >
    > frank@frank-iMac:~$ uhd_image_loader
    > --args="type=usrp2,addr=192.168.10.2" --no-fw
    > --fpga-path=/home/frank/u2plus.bit
    > [INFO] [UHD] linux; GNU C++ version 8.3.0; Boost_106700;
    > UHD_3.15.0.git-74-g9ea710b1
    > Unit: USRP N210 r4 (F2E28F, 192.168.10.2)
    > Error: RuntimeError: The file at path "/home/frank/u2plus.bit"
    is not
    > a valid FPGA image.
    > frank@frank-iMac:~$
    >
    > This is the size of the image:
    >
    > frank@frank-iMac:~$ ls -la /home/frank/u2plus.bit
    > -rw-r--r-- 1 frank frank 1303318 Oct  7 11:07 /home/frank/u2plus.bit
    > frank@frank-iMac:~$
    >
    > Again, no modifications to the Verilog designs -- everything,
    > including makefile, is out of the box.
    >
    > Any suggestion?
    >
    > Thanks,
    >
    > Francesco
    >
    You must use the .bin file uhd_image_loader




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