# Changelog

All notable changes to ESP-Linker 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).

## [1.2.1] - 2025-01-13

### Added
- **Professional CLI Tools Suite**: Complete command-line interface with 8 commands
- **Visual Progress Bars**: Real-time progress indicators for firmware flashing
- **Interactive WiFi Configuration Wizard**: Step-by-step WiFi setup with network scanning
- **Advanced Device Management System**: Multi-device support with persistent configuration
- **Professional Web Dashboard**: Modern responsive web interface for device control
- **Auto-Discovery System**: mDNS-based device discovery with zero configuration
- **Enhanced Error Handling**: Auto-retry logic with exponential backoff
- **Connection Health Monitoring**: Continuous connectivity verification
- **Batch GPIO Operations**: Efficient multiple pin control
- **Comprehensive Documentation**: Professional documentation with examples

### Enhanced
- **PyFirmata-Inspired API**: Familiar interface for Arduino developers
- **Cross-Platform Support**: Windows, Linux, macOS compatibility
- **Professional Logging**: Structured logging with multiple levels
- **Security Features**: CORS support and secure communication
- **Performance Optimization**: Connection pooling and caching

### CLI Commands
- `esp-linker flash`: Flash ESP8266 firmware with progress bars
- `esp-linker setup-wifi`: Interactive WiFi configuration wizard
- `esp-linker devices`: Advanced device management commands
- `esp-linker discover`: Network device discovery
- `esp-linker detect`: ESP8266 board detection
- `esp-linker test`: Device functionality testing
- `esp-linker dashboard`: Launch web dashboard

### Technical Improvements
- **Built-in Firmware**: 365KB complete ESP8266 firmware included
- **Auto-Port Detection**: Intelligent ESP8266 board detection
- **Multiple Baud Rates**: Support for high-speed flashing
- **Chip Verification**: Automatic chip ID and flash size detection
- **Real-time Monitoring**: Live device status and GPIO state updates

### Developer Experience
- **Professional Package Structure**: Clean, organized codebase
- **Comprehensive Testing**: 100% functionality verification
- **Unicode Compatibility**: ASCII-safe symbols for Windows compatibility
- **Professional Documentation**: Complete API reference and examples
- **Educational Content**: Ready-to-use project examples

## [1.2.0] - 2025-01-12

### Added
- Initial professional release
- Core GPIO control functionality
- Basic CLI tools
- Web dashboard foundation
- Device discovery system

### Features
- Digital I/O control
- PWM output (8 channels)
- Servo control (0-180°)
- Analog input (10-bit ADC)
- WiFi connectivity
- RESTful API

## [1.1.0] - 2025-01-11

### Added
- Enhanced GPIO control
- Improved error handling
- Basic device management

## [1.0.0] - 2025-01-10

### Added
- Initial release
- Basic ESP8266 control
- Simple Python API
- Core functionality

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## Development Roadmap

### Planned Features (v1.3.0)
- **ESP32 Support**: Extend support to ESP32 boards
- **Bluetooth Connectivity**: Bluetooth Low Energy support
- **Advanced Sensors**: Built-in support for common sensors
- **Cloud Integration**: Direct cloud service integration
- **Mobile App**: Companion mobile application
- **OTA Updates**: Over-the-air firmware updates

### Long-term Goals
- **Multi-Protocol Support**: LoRaWAN, Zigbee, Thread
- **Edge Computing**: Local AI/ML processing
- **Industrial Protocols**: Modbus, MQTT, OPC-UA
- **Professional Certification**: Industrial-grade certifications

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**ESP-Linker** - Professional IoT development made simple.  
*Developed with ❤️ by [SK Raihan](https://www.skrelectronicslab.com) & [SKR Electronics Lab](https://www.skrelectronicslab.com)*
