AXIOM nMigen Gateware

Building Blocks & FPGA Designs powering the AXIOM micro camera written in Python & nMigen. Mostly a place to experiment and figure out how to build things.

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