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[Discuss-gnuradio] FPGA image build incorect size


From: John_w_g
Subject: [Discuss-gnuradio] FPGA image build incorect size
Date: Tue, 26 Feb 2019 20:47:23 +0000

I have been following the instruction for Getting Started with RFNOC Development.  I have made it to the point of generating a custom FPGA image with the following command


./uhd_image_builder.py window fft -d x310 -t X310_RFNOC_HG -m 5 --fill-with-fifos
with the following status on completion
[00:37:14] Process terminated. Status: Success

========================================================
Warnings:           969
Critical Warnings:  37
Errors:             0

make[1]: Leaving directory '/home/mpntarx/rfnoc/src/uhd-fpga/usrp3/top/x300'
Exporting bitstream files...
Generating LVBITX...
Exporting build report...
Build DONE ... X310_RFNOC_HG

I then ran the uhd_usrp_probe command with the successful output

[INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; UHD_3.15.0.git-13-g52138314
[INFO] [X300] X300 initialization sequence...
[INFO] [X300] Maximum frame size: 1472 bytes.
[INFO] [X300] Radio 1x clock: 200 MHz
......
   |    /
|   |   |       RFNoC blocks on this device:
|   |   |  
|   |   |   * DmaFIFO_0
|   |   |   * Radio_0
|   |   |   * Radio_1
|   |   |   * DDC_0
|   |   |   * DDC_1
|   |   |   * DUC_0
|   |   |   * DUC_1

I then attempted to load the generated FPGA image file

uhd_image_loader --args "type=x300,addr=192.168.10.2" --fpga-path ~/rfnoc/src/uhd-fpga/usrp3/top/x300/build/usrp_x310_fpga_RFNOC_HG.bit
[INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; UHD_3.15.0.git-13-g52138314
Error: RuntimeError: The specified FPGA image is too large: 15878034 vs. 15878032

The FPGA size is reported as 2 bits too large.  I have replicated this 2x now, with different image build specifics, with different modules to include.

Is this a UHD problem?  or something else.

I installed UHD via PyBombs following the instructions in the Getting Started Guide.

John


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