# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]

### Added
- Initial project structure
- Basic kernel implementation
- Task management system
- Priority-based scheduler
- Synchronization primitives (semaphores, mutexes, queues)
- CAN driver with CAN FD support
- UART driver
- SPI driver
- I2C driver
- GPIO driver
- ADC driver
- PWM driver
- CAN TP protocol (ISO 15765-2)
- CAN NM (Network Management)
- UDS diagnostics (ISO 14229)
- OBD-II support
- DTC management
- Watchdog manager
- Memory protection
- E2E protection
- Build system with CMake
- Test framework integration
- Documentation generation
- CI/CD pipeline

### Changed
- Updated project structure
- Improved error handling
- Enhanced performance

### Deprecated
- None

### Removed
- None

### Fixed
- Various bug fixes

### Security
- Added security considerations
- Implemented secure boot support

## [1.0.0] - 2024-01-15

### Added
- **Kernel**
  - Priority-based preemptive scheduler
  - Round-robin scheduling for same priority tasks
  - Task management (create, delete, suspend, resume)
  - Semaphore support (binary, counting, mutex)
  - Message queues
  - Software timers
  - Interrupt management
  - Memory protection (MPU)
  - Stack overflow detection
  - Fault handling
  - Watchdog integration

- **Drivers**
  - CAN driver with CAN FD support
  - UART driver with DMA support
  - SPI driver (master mode)
  - I2C driver (master/slave)
  - GPIO driver with interrupt support
  - ADC driver with multi-channel support
  - PWM driver with dead-time insertion

- **Middleware**
  - CAN TP (ISO 15765-2)
  - CAN NM (AUTOSAR-like)
  - UDS (ISO 14229)
  - OBD-II
  - DTC Manager
  - E2E Protection

- **Applications**
  - Engine Control
  - Brake Control with ABS
  - Body Control
  - Dashboard

- **Board Support**
  - STM32F407 Discovery
  - NXP S32K144 EVB
  - Custom ECU template

- **Tools**
  - Build scripts
  - Configuration generator
  - Static analysis
  - Documentation generator
  - Test runner

### Changed
- Optimized scheduler performance
- Improved memory management
- Enhanced error handling

### Fixed
- Fixed context switch bug
- Fixed CAN FD timing issue
- Fixed stack overflow detection

### Security
- Added secure boot
- Implemented memory protection
- Added E2E protection
- Enhanced watchdog

## [0.9.0] - 2023-12-01

### Added
- Beta release
- Core kernel implementation
- Basic drivers
- Initial middleware

### Changed
- Refactored kernel
- Improved documentation

### Fixed
- Critical scheduler bug
- Memory leak in queue

## [0.5.0] - 2023-10-01

### Added
- Alpha release
- Initial kernel
- Basic scheduler
- GPIO driver

### Changed
- Project structure
- Build system

### Fixed
- Initial bugs

## [0.1.0] - 2023-08-01

### Added
- Project initialization
- Basic structure
- Documentation

[Unreleased]: https://github.com/automotive-rtos/rtos/compare/v1.0.0...HEAD
[1.0.0]: https://github.com/automotive-rtos/rtos/compare/v0.9.0...v1.0.0
[0.9.0]: https://github.com/automotive-rtos/rtos/compare/v0.5.0...v0.9.0
[0.5.0]: https://github.com/automotive-rtos/rtos/compare/v0.1.0...v0.5.0
[0.1.0]: https://github.com/automotive-rtos/rtos/releases/tag/v0.1.0