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memlnaut-nisps/nisps-core/CHANGELOG.md
monkey-w1n5t0n 45193a2c01 fix: audit and fix nisps-core extraction issues 
- Remove platform-specific code (ARM_MATH_CM33, XMOS __XS3A__, std::printf)
- Add set_output()/set_outputs()/add_example() API for programmatic training
- Fix release build crash: side effect inside assert() for loss function init
- Replace fake smoke test with real convergence tests (5 tests, all pass)
- Rewrite example to demonstrate actual training with real output
- Update README, CHANGELOG, and extraction plan to match reality
2026-02-08 18:01:48 +01:00

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Changelog

All notable changes to NISPS Core will be documented in this file.

The format is based on Keep a Changelog.

[0.2.0] - 2026-02-08

Added

  • set_output() / set_outputs() methods for programmatic output control
  • add_example() method for adding training pairs without interactive workflow
  • Real training convergence tests (identity mapping, multi-output)
  • Working example with actual training (examples/simple_mapping.cpp)

Fixed

  • Release build crash: loss function pointer not initialized due to side effect inside assert() (mlp_impl.hpp)
  • Removed ARM CMSIS-DSP conditional code from node.hpp (ARM_MATH_CM33)
  • Removed XMOS __XS3A__ conditional attributes from utils.hpp and loss.hpp
  • Removed std::printf logging from dataset_impl.hpp (use IML logger callback instead)

Changed

  • README updated to document new APIs and remove false claims
  • CHANGELOG rewritten to accurately reflect library state

[0.1.0] - 2026-02-08

Added

  • Initial extraction from MEMLNaut-NISPS firmware
  • Header-only C++20 library structure
  • Core IML (Interactive Machine Learning) interface
  • MLP (Multi-Layer Perceptron) neural network implementation
  • Dataset management with replay memory support
  • Training and inference modes
  • Logging callback support
  • CMake build system for tests

Changed

  • Converted from Arduino/RP2040 embedded code to platform-agnostic C++
  • Updated to C++20 (required for std::span)
  • Converted to header-only implementation pattern
  • Added nisps namespace to all code

Removed

  • Arduino and RP2040 dependencies
  • Serial debugging (replaced with optional callbacks)
  • SD card save/load functionality
  • Audio synthesis code (nisps-core is control-only)

Migration from MEMLNaut-NISPS

If you're using the old embedded IMLInterface class:

// Old (embedded):
IMLInterface iml(n_inputs, n_outputs);

// New (nisps-core):
nisps::IML<float> iml(n_inputs, n_outputs);