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This release is a pre-release and may not be stable for production use.

nMigen Apertus PackageS

Building Blocks & Tools for FPGA Design with Python & nMigen. Mostly a place to experiment and figure out how to build things. Also the incubator for the future AXIOM Beta camera gateware & the home of the current AXIOM micro gateware.

This repo contains:

  • Prototypes of the upcoming nmigen data types PackedStruct and Interface (here called Bundle) (in src/lib/data_structure/)

  • A stream Abstraction with various building Blocks: (in src/lib/stream/)

    • FIFOs

    • A gearbox for changing the width

    • Helpers for building other Stream cores

    • Miscellaneous Debug and Inspection tools

  • various nMigen cores (in src/lib/) for:

    • AXI and AXI Lite including a Buffer reader and Writer

    • A CSR bank that can be wired to an AXI bus

    • HDMI (currently the DVI subset; derived from Litevideo)

    • A HISPI reciever (for the use with aptina / onsemi image sensors)

    • A core for streaming data over USB3 using the ft601

    • Some utility video processing (like debayering)

    • …

  • tools for gluing together SOCs (currently supports the Xilinx Zynq and JTAG based plattoforms) in src/soc/

    • Making heavy use of nMigen Platform abstractions (wrapping existing plattforms)

    • Provides a bus agnostic way to describe (low speed) peripherals

    • Emits Python code that can be used to access the designs CSRs (“pydriver”)

    • Generate devicetree overlays for loading linux device drivers

    • pack “fatbitstreams” that bundle setup logic, drivers and the bitstream

  • platform definitions for both the AXIOM Beta and the AXIOM Micro in src/devices/

  • a variety of other smaller half-working experiments in src/experiments/

    • linux framebuffer HDMI output

    • USB3 Plugin module gateware (wip)

    • AXIOM micro camera gateware (wip)

    • test gateware to test connectors for their ability to transmit high speed data (via a loopback test)

    • test gateware for the axi writer & reader

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