157 lines
6.3 KiB
Markdown
157 lines
6.3 KiB
Markdown
# Changelog
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All notable changes to this project will be documented in this file.
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The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
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and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
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## [Unreleased]
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## [0.1.0] - 2025-12-03
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### Added
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- Streamlit Dashboard Enhancement (Sprint 17)
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- HAL-based instrument control (no direct physics access)
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- Test execution page for running TempCo characterisation
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- Results viewer page with filtering and historical data
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- Form-based parameter controls preventing UI clunkiness
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- Live simulation charts with auto-start
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- End-to-end integration tests covering full workflow
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- Updated README with installation and usage instructions
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### Technical
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- Dashboard uses InstrumentFactory and InstrumentSet abstraction
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- Embedded SimulationServer with threading synchronisation
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- SQLite repository close() method for Windows file handle cleanup
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- 244 unit tests, 12 integration tests all passing
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- Coverage: 100% on core physics/instrument modules
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## [0.1.0-beta.2] - 2025-12-03
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### Added
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- Test Executive Framework (Sprint 14)
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- TestContext dataclass providing runtime context for tests
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- ITest abstract base class defining test interface
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- TestLogger for recording measurements, results, and events
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- LimitChecker for evaluating pass/fail against specification limits
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- TestRunner for orchestrating test execution
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- SQLite-based TestRepository for persisting test data
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- Parquet measurement storage for efficient time-series data
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- DVT Test Implementation (Sprint 15)
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- BaseDVTTest providing common test utilities
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- TempCo characterisation test (temperature coefficient measurement)
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- Temperature sweep with automatic thermal settling
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- Linear regression TempCo calculation (ppm/°C)
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- Comprehensive integration tests for end-to-end validation
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### Technical
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- Test framework supports data logging, limit evaluation, and result persistence
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- TempCo test demonstrates full end-to-end workflow: configure instruments → sweep temperature → measure → calculate → evaluate
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- All framework and test components fully type-checked and linted
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## [0.1.0-beta.1] - 2025-12-02
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### Added
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- Hardware Abstraction Layer (HAL) with instrument interface protocols
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- IThermalChamber protocol with temperature control methods
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- IPowerSupply protocol with voltage/current control and measurement
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- IMultimeter protocol with DC voltage, current, and resistance measurement
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- Instrument drivers implementing HAL interfaces
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- ThermalChamberDriver implements IThermalChamber
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- PowerSupplyDriver implements IPowerSupply
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- MultimeterDriver implements IMultimeter
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- Instrument factory pattern for backend abstraction
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- InstrumentSet dataclass containing chamber, PSU, and DMM
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- InstrumentConfig for specifying backend (simulator/pyvisa) and connection details
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- InstrumentFactory.create() for creating instrument sets from configuration
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- Transport layer abstraction
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- Transport ABC defining connect/disconnect/read/write/query interface
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- TCPTransport implementation for TCP/IP connections
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- Comprehensive test suite for HAL (16 tests)
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- Interface implementation verification
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- Factory pattern testing with mocked backends
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- Configuration validation
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### Changed
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- Drivers now explicitly inherit from interface ABCs for maximum type safety
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- Moved InstrumentServer to instruments/transport for better architecture
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### Technical
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- ABC-based interfaces ensure compile-time interface compliance
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- Factory pattern enables seamless switching between simulated and real hardware
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- All HAL components fully type-checked with mypy strict mode
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## [0.1.0-alpha.3] - 2025-12-02
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### Added
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- Async TCP server for exposing virtual instruments over network
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- InstrumentServer class with multi-port, multi-client support
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- Line-based SCPI protocol (newline-terminated commands/responses)
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- SimulationServer wiring physics engine to all virtual instruments
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- CLI `serve` command to start simulation server with configurable ports
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- Integration tests for TCP server and instrument connectivity
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### Infrastructure
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- SCPI foundation (Sprint 5): command parser with IEEE 488.2 support
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- Virtual instrument base class with command dispatch
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- Thermal chamber simulator (TEMP:SETPOINT, TEMP:ACTUAL?, TEMP:STAB?)
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- Power supply simulator (VOLT, CURR, OUTP, MEAS commands)
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- Multimeter simulator (MEAS:VOLT:DC?, MEAS:CURR:DC?, CONF, READ?)
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## [0.1.0-alpha.2] - 2025-12-02
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### Added
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- Streamlit dashboard for interactive physics visualisation
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- Real-time temperature charts (chamber, case, junction)
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- Current state metrics display (voltages, currents, power, temperatures)
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- Interactive controls in sidebar:
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- Temperature setpoint slider (-40°C to 125°C)
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- Input voltage slider (0-12V)
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- Load current slider (0-500mA)
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- Output enable toggle
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- Start/Stop/Reset simulation buttons
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- Self-heating demonstration panel with:
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- Junction-case and case-ambient temperature rise display
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- Power dissipation chart
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- Thermal coupling explanation
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## [0.1.0-alpha.1] - 2025-12-02
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### Added
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- Physics engine with thermal-electrical coupling
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- First-order thermal response calculations for chamber and case
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- Junction temperature calculation via thermal resistance (θ_jc)
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- Self-heating effects from power dissipation
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- LDO DUT model with temperature-dependent behaviour
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- Output voltage temperature coefficient (ppm/°C)
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- Quiescent current temperature coefficient
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- Dropout voltage temperature dependence
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- Power dissipation calculation
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- Comprehensive physics engine test suite (13 tests)
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## [0.0.1] - 2025-12-01
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### Added
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- Initial project scaffolding
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- pyproject.toml with core dependencies
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- Package directory structure with all subpackages
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- Development tooling configuration (ruff, mypy, pytest)
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- CLI entry point with version command
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- Project documentation (requirements, technical specification, architecture decisions)
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- Development plan with vertical slice approach
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- CI/CD pipeline configuration
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---
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## Version History
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| Version | Date | Milestone |
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|---------|------|-----------|
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| 0.1.0 | 2025-12-03 | MVP Complete |
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| 0.1.0-beta.2 | 2025-12-03 | First DVT test runs |
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| 0.1.0-beta.1 | 2025-12-02 | HAL complete |
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| 0.1.0-alpha.3 | 2025-12-02 | Network ready |
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| 0.1.0-alpha.2 | 2025-12-02 | Visual demo |
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| 0.1.0-alpha.1 | 2025-12-02 | Physics engine |
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| 0.0.1 | 2025-12-01 | Project scaffolding |
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