The hdl-registers project is an open-source HDL register interface code generator fast enough to run in real time. It makes FPGA/ASIC development more fun by automating a lot of time-consuming manual work. It also minimizes the risk of bugs by removing the need for duplicate information. Read more

See documentation on the website: https://hdl-registers.com

The following features are supported:

• Register fields
  • Bit.
  • Signed/unsigned fixed-point bit vector.
  • Enumeration.
  • Positive/negative-range integer.
• Register arrays.
• Default registers.
• Register constants.

Registers can be defined using a TOML/JSON/YAML data file or the Python API. The following code can be generated:

• VHDL
  • AXI-Lite register file wrapper using records and native VHDL types for values.
  • Simulation support packages for compact read/write/wait/checking of register and field values.
• C++
  • Complete class with setters and getters for registers and fields.
  • Includes an abstract interface header for unit test mocking.
• C header with register addresses and field information.
• HTML website with documentation of registers and fields.
• Python class with methods to read/write/print each register and field on a target device.

The tool can also be extended by writing your own code generator using a simple but powerful API.

This project is mature and used in many production environments. The maintainers place high focus on quality, with everything having good unit test coverage and a thought-out structure.