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Wade Fife ddb7e6866b fpga: tools: Make each BUILD_SEED random 
Use --seed only to initialize a local deterministic random number
generator. Generate a new signed 32-bit BUILD_SEED for each FPGA build
attempt instead of passing --seed directly to the first build. This
avoids accidentally using sequential pipeline attempt numbers as
BUILD_SEED values.

Using the same --seed produces the same BUILD_SEED sequence, preserving
reproducibility.
2026-09-16 09:53:50 -05:00
..
.ci ci: apply target name for X420 FPGA compiles 2026-08-28 16:06:17 +01:00
usrp1 Merge FPGA repository back into UHD repository 2020-01-28 09:35:36 -08:00
usrp2 fpga: Fix check_timing.py break indent 2026-09-02 09:40:20 +02:00
usrp3 fpga: tools: Make each BUILD_SEED random 2026-09-16 09:53:50 -05:00
.clang-format fpga: Clear clang-format settings for FPGA code 2023-08-17 10:51:55 -05:00
.gitignore fpga: Add more spurious files to gitignore 2023-12-13 17:28:09 -06:00
CODING.md fpga: Update recommended HDL header guideline 2021-06-10 11:56:58 -05:00
CONTRIBUTING.md Merge FPGA repository back into UHD repository 2020-01-28 09:35:36 -08:00
README.md docs: Fix FPGA readme (Doxygen link) 2026-05-11 15:26:30 +02:00

README.md

Ettus Research USRP FPGA HDL Source

Welcome to the USRP FPGA HDL source code tree! This repository contains free & open-source FPGA HDL for the Universal Software Radio Peripheral (USRP™) SDR platform, created and sold by Ettus Research. A large percentage of the source code is written in Verilog.

Product Generations

This repository contains the FPGA source for the following generations of USRP devices.

Generation 1

  • Directory: usrp1
  • Devices: USRP Classic Only
  • Tools: Quartus from Altera
  • Build Instructions

Generation 2

Generation 3

  • Directory: usrp3
  • Devices: USRP B2X0, USRP X Series, USRP E3X0, USRP N3xx
  • Tools: Vivado from Xilinx, ISE from Xilinx, GNU make
  • Build Instructions
  • Simulation

Pre-built FPGA Images

Pre-built FPGA and Firmware images are not hosted here. Please visit the FPGA and Firmware manual page for instructions on downloading and using pre-built images. In most cases, running the following command will do the right thing.

$ uhd_images_downloader

Building This Manual

This FPGA manual is now fully integrated into the UHD manual and is built as part of the UHD build process.