diff --git a/assets/documents/specifications.md b/assets/documents/specifications.md
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-# Requirements for Firmware running a mount
-
-## Time/Date/Location
-- Must be aware of date, time and location in order to calculate HA
-- Support for Northern and Southern hemisphere
-
-## RA axis
-- Must be able to slew by a given number of degrees
-- Must be able to slew at various rates until requested to stop
-- Must run at a constant speed without changing coordinate (tracking)
-- Must be able to run faster or slower for some duration (with millisecond accuracy) without changing coordinate (guiding)
-- Must be able to have new coordinate sync'd from connected software
-- All these operations must be done without losing home position
-- Should support homing operations with a sensor to home on
-
-## DEC axis
-- Must be able to slew by a given number of degrees
-- Must be able to slew at various rates until requested to stop
-- Must be able to run forward or reverse for some duration (with millisecond accuracy) without changing coordinate (guiding)
-- Must be able to have new coordinate sync'd from connected software
-- All these operations must be done without losing home position
-- Should support homing operations with a sensor to home on
-
-## ALT/AZ
-- Must be able to slew by a given number of degrees
-- Must be able to slew at various rates until requested to stop
-- Should support configurable min/max positions and limit axis movement accordingly
-- Should save home and current position to EEPROM
-
-## Focuser
-- Must be able to slew at various rates until requested to stop
-- Must support slewing to a specific target position
-- Must be able to set motor position
-
-## General
-- RA and DEC operations must be independent, but can overlap
-- Stepper operations must be async
-- Would be nice to get an event when the stepper stops
-- Serial message processing must be sequential, but async and in the background
-- Serial connection default speed should be 115200
-- Must be able to convert from RA/DEC coordinates to stepper target positions (must use solution with longest safe time)
-- Meade Protocol support for OAT/OAM/OAE
-- Should be able to return safe time left
-- Should be able to return time to meridian for current position
-
-## Menu/Display
-- Support Info-only displays to show mount status
-- Support LCD screens (small, large, color, mono), but maybe start with common/standardized size
-- Should support input devices like Buttons, Joysticks, Dial with press point, Touch screen
-- Need to come up with a list of operations possible from interactive display devices
-  - Move any axes in any directions at various speeds
-  - Start/stop tracking
-  - Find home position 
-  - Go to Home position
-  - Enter target coordinates and slew there
-
-## Sensors
-- Support for RA and DEC end switches
-- Support for RA/DEC homing switches
-- Temperature sensor?
-
-## Improvements from 1.0
-- Support meridian flip. This should already be supported in apps like NINA, if the sync to coordinate takes the longest safe time.
-- Dew heater support?
diff --git a/assets/documents/decisions.md b/specs/decisions.md
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rename to specs/decisions.md
diff --git a/specs/design.md b/specs/design.md
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+# OpenAstroFirmware Architectural Design Specification
+
+**Document Version:** 1.0  
+**Date:** August 2, 2025  
+**Project:** OpenAstroFirmware - Zephyr RTOS-based Telescope Mount Control System  
+**Requirements Reference:** [specs/requirements.md](requirements.md)
+
+## 1. INTRODUCTION
+
+### 1.1 Purpose
+This document defines the high-level architectural design for OpenAstroFirmware, establishing the fundamental system structure, architectural patterns, and design principles that guide the implementation of requirements specified in the OpenAstroFirmware Requirements Specification.
+
+### 1.2 Architectural Philosophy
+The OpenAstroFirmware architecture is founded on the following core principles:
+
+- **Layered Architecture**: Clear separation of concerns through well-defined abstraction layers
+- **Modular Design**: Loosely coupled, highly cohesive components with standardized interfaces
+- **Hardware Abstraction**: Platform-independent core logic with pluggable hardware drivers
+- **Real-time Determinism**: Predictable timing behavior for tracking and control operations
+- **Extensibility by Design**: Plugin-based architecture supporting future expansion
+- **Safety-First Approach**: Fail-safe mechanisms and comprehensive error handling integrated at all levels
+
+### 1.3 Document Scope
+This document presents the architectural view of the system, focusing on:
+- System decomposition and component relationships
+- Architectural patterns and design decisions
+- Data flow and control flow architectures
+- Interface specifications and contracts
+- Concurrency and threading models
+- Extensibility mechanisms and plugin architectures
+
+---
+
+## 2. ARCHITECTURAL OVERVIEW
+
+### 2.1 System Architecture Pattern
+
+OpenAstroFirmware employs a **Multi-Layered Service-Oriented Architecture** with the following characteristics:
+
+```
+┌─────────────────────────────────────────────────────────────┐
+│                    PRESENTATION LAYER                       │
+│   External Protocols │ User Interfaces │ Network Services   │
+├─────────────────────────────────────────────────────────────┤
+│                     APPLICATION LAYER                       │
+│  Command Processing │ State Management │ Event Coordination │
+├─────────────────────────────────────────────────────────────┤
+│                      SERVICE LAYER                          │
+│   Mount Control   │   Sensor Mgmt   │   Config Service      │
+├─────────────────────────────────────────────────────────────┤
+│                       CORE LAYER                            │
+│   Tracking Engine │ Safety Monitor │ Hardware Controllers   │
+├─────────────────────────────────────────────────────────────┤
+│                 HARDWARE ABSTRACTION LAYER                  │
+│    Driver Interface   │   Device Abstraction   │  Platform  │
+├─────────────────────────────────────────────────────────────┤
+│                     PLATFORM LAYER                          │
+│           Zephyr RTOS │ Hardware Platform │ BSP             │
+└─────────────────────────────────────────────────────────────┘
+```
+
+**Layer Responsibilities:**
+
+1. **Presentation Layer**: External communication interfaces and user interaction
+2. **Application Layer**: System orchestration and global state management  
+3. **Service Layer**: Domain-specific business logic and high-level services
+4. **Core Layer**: Real-time operations and fundamental system capabilities
+5. **Hardware Abstraction Layer**: Platform-independent hardware access
+6. **Platform Layer**: Zephyr RTOS and hardware-specific implementations
+
+**Architectural Characteristics:**
+- **Unidirectional Dependencies**: Higher layers depend only on lower layers
+- **Interface-Based Communication**: Well-defined contracts between layers
+- **Plugin Integration Points**: Extensibility mechanisms at each layer
+- **Service Composition**: Complex operations built from simpler services
+
+*Addresses Requirements: REQ-EXT-001, REQ-HW-EXT-001, REQ-STEP-EXT-001, REQ-SNS-EXT-001*
+
+### 2.2 Architectural Drivers
+
+The architecture is shaped by the following key requirements and constraints:
+
+**Performance Drivers** *(REQ-PERF-001 to REQ-PERF-007)*:
+- Sub-arcsecond tracking precision
+- 100ms command response time
+- Real-time deterministic behavior
+- Concurrent multi-axis operations
+
+**Extensibility Drivers** *(REQ-EXT-001 to REQ-EXT-012)*:
+- Support for multiple hardware platforms
+- Plugin-based driver architecture
+- Future feature expansion capability
+
+**Safety and Reliability Drivers** *(REQ-SAF-001 to REQ-REL-007)*:
+- Fail-safe operation modes
+- Comprehensive error handling
+- System state consistency
+- Hardware protection mechanisms
+
+**Integration Drivers** *(REQ-COMPAT-001 to REQ-COMPAT-008)*:
+- LX200 protocol compliance
+- Multiple astronomy software compatibility
+- Legacy hardware support
+
+---
+
+## 3. LAYER-BY-LAYER ARCHITECTURAL DESIGN
+
+### 3.1 Presentation Layer Architecture
+
+*Addresses Requirements: REQ-COM-001 to REQ-COM-024, REQ-WEB-001 to REQ-WEB-008, REQ-UI-001 to REQ-UI-012*
+
+The presentation layer provides external interfaces and manages all communication with external systems and users.
+
+#### 3.1.1 Protocol Handlers Subsystem
+- **LX200 Protocol Engine**: Stateless command parser and response generator
+- **Network Protocol Stack**: HTTP/WebSocket services for web-based control
+- **Extension Protocol Framework**: Pluggable protocol support for future additions
+
+#### 3.1.2 User Interface Subsystem  
+- **Display Abstraction**: Unified interface for various display technologies
+- **Input Device Framework**: Event-driven input handling with device abstraction
+- **UI State Management**: Screen navigation and context preservation
+
+#### 3.1.3 Design Patterns
+- **Command Pattern**: LX200 commands as executable objects
+- **Observer Pattern**: UI updates driven by system state changes
+- **Adapter Pattern**: Protocol-specific adapters for unified internal interfaces
+
+### 3.2 Application Layer Architecture
+
+*Addresses Requirements: REQ-COM-007, REQ-MON-001, REQ-CFG-005 to REQ-CFG-008*
+
+The application layer orchestrates system behavior and maintains global state.
+
+#### 3.2.1 Command Processing Subsystem
+- **Command Queue Manager**: Asynchronous command processing with priority handling
+- **State Machine Controller**: Global system state management and transitions
+- **Event Dispatcher**: Centralized event routing and handling
+
+#### 3.2.2 System Coordination Subsystem
+- **Resource Manager**: Coordinate access to shared system resources
+- **Configuration Coordinator**: Runtime configuration management and persistence
+- **Diagnostics Engine**: System health monitoring and reporting
+
+#### 3.2.3 Design Patterns
+- **State Pattern**: System behavior changes based on operational states
+- **Mediator Pattern**: Component communication through central coordinator
+- **Chain of Responsibility**: Command processing pipeline
+
+### 3.3 Service Layer Architecture
+
+*Addresses Requirements: REQ-MNT-001 to REQ-MNT-012, REQ-TRK-001 to REQ-COORD-005, REQ-CFG-001 to REQ-NVM-008*
+
+The service layer provides high-level domain services and business logic.
+
+#### 3.3.1 Mount Control Service
+- **Coordinate Transformation Engine**: Celestial to mechanical coordinate conversion
+- **Motion Planning Service**: Trajectory calculation and optimization
+- **Position Management Service**: Current position tracking and synchronization
+
+#### 3.3.2 Tracking Service
+- **Tracking Rate Calculator**: Sidereal, solar, and lunar rate computation
+- **Guiding Correction Engine**: Precision adjustment processing
+- **Time and Location Service**: Astronomical time calculations
+
+#### 3.3.3 Configuration Service
+- **Persistent Settings Manager**: Non-volatile memory management
+- **Configuration Validation Engine**: Settings validation and migration
+- **Backup and Restore Service**: Configuration data protection
+
+#### 3.3.4 Design Patterns
+- **Strategy Pattern**: Different tracking algorithms and mount types
+- **Template Method**: Common configuration management patterns
+- **Facade Pattern**: Simplified interfaces to complex subsystems
+
+### 3.4 Core Layer Architecture
+
+*Addresses Requirements: REQ-STEP-001 to REQ-STEP-018, REQ-SNS-001 to REQ-SNS-006, REQ-SAF-001 to REQ-SAF-005*
+
+The core layer implements fundamental system capabilities and real-time operations.
+
+#### 3.4.1 Motion Control Subsystem
+- **Stepper Motor Controller**: Abstract motor control with driver plugins
+- **Axis Control Engine**: Independent RA/DEC axis management
+- **Motion Synchronization Service**: Coordinated multi-axis movements
+
+#### 3.4.2 Sensor Management Subsystem
+- **Sensor Data Pipeline**: Unified sensor reading and processing
+- **Sensor Fusion Engine**: Multi-sensor data integration
+- **Calibration Management**: Sensor-specific calibration procedures
+
+#### 3.4.3 Safety Monitoring Subsystem
+- **Limit Enforcement Engine**: Software and hardware limit checking
+- **Emergency Stop Controller**: Immediate motion cessation capability
+- **System Health Monitor**: Continuous system status evaluation
+
+#### 3.4.4 Design Patterns
+- **Factory Pattern**: Driver instantiation based on configuration
+- **Observer Pattern**: Sensor data distribution to interested components
+- **Proxy Pattern**: Safety checks intercept motion commands
+
+### 3.5 Hardware Abstraction Layer Architecture
+
+*Addresses Requirements: REQ-HW-EXT-001 to REQ-HW-EXT-004, REQ-STEP-EXT-001 to REQ-STEP-EXT-005, REQ-SNS-EXT-001 to REQ-SNS-EXT-006*
+
+The HAL provides a consistent interface to diverse hardware platforms and devices.
+
+#### 3.5.1 Driver Framework
+- **Device Driver Interface**: Standardized contract for all hardware drivers
+- **Driver Registry**: Dynamic driver discovery and registration
+- **Hardware Abstraction Interface**: Platform-independent hardware access
+
+#### 3.5.2 Platform Abstraction
+- **Board Support Framework**: Hardware-specific initialization and configuration
+- **Peripheral Access Layer**: Unified interface to MCU peripherals
+- **Device Tree Integration**: Zephyr device tree utilization for hardware description
+
+#### 3.5.3 Design Patterns
+- **Abstract Factory**: Platform-specific driver creation
+- **Bridge Pattern**: Separation of hardware interface from implementation
+- **Plugin Architecture**: Runtime driver loading and registration
+
+---
+
+## 4. CONCURRENCY AND THREADING ARCHITECTURE
+
+*Addresses Requirements: REQ-PERF-004, REQ-PERF-007, REQ-STEP-004*
+
+### 4.1 Threading Model
+
+The system employs a **Priority-Based Multi-Threading Architecture** with clear thread responsibilities:
+
+```
+Thread Hierarchy and Communication:
+┌─────────────────┬─────────────────┬─────────────────┬──────────────┐
+│  Safety Thread  │ Tracking Thread │ Control Thread  │ Comms Thread │
+│ (Highest Prio)  │  (High Prio)    │ (Medium Prio)   │ (Low Prio)   │
+├─────────────────┼─────────────────┼─────────────────┼──────────────┤
+│ • Limit Checks  │ • Sidereal      │ • Command Exec  │ • LX200      │
+│ • Emergency Stop│ • Position      │ • State Mgmt    │ • Network    │
+│ • Health Monitor│ • Rate Calc     │ • Coordination  │ • UI Updates │
+└─────────────────┴─────────────────┴─────────────────┴──────────────┘
+```
+
+### 4.2 Inter-Thread Communication Patterns
+
+#### 4.2.1 Message Passing Architecture
+- **Lock-Free Queues**: High-performance thread communication
+- **Event Broadcasting**: Publish-subscribe event distribution
+- **Shared Memory Protection**: Mutex-protected critical sections
+
+#### 4.2.2 Synchronization Strategy
+- **Priority Inheritance**: Prevention of priority inversion
+- **Timeout-Based Operations**: Deadlock prevention mechanisms
+- **Atomic Operations**: Lock-free data access where possible
+
+### 4.3 Real-Time Constraints Management
+
+- **Deterministic Scheduling**: Predictable thread execution patterns
+- **Interrupt Service Isolation**: Minimal ISR processing with deferred work
+- **Memory Pool Allocation**: Predictable memory allocation patterns
+
+---
+
+## 5. DATA ARCHITECTURE AND INFORMATION FLOW
+
+*Addresses Requirements: REQ-COM-006, REQ-COORD-001 to REQ-COORD-005, REQ-NVM-001 to REQ-NVM-008*
+
+### 5.1 Data Flow Architecture
+
+The system processes information through well-defined data pipelines:
+
+```
+External Data Flow:
+Commands → Parser → Validator → Executor → Response Generator → Output
+
+Internal Data Flow:
+Sensors → Filter → Transform → State Update → Event Broadcast → Actions
+```
+
+### 5.2 Data Management Patterns
+
+#### 5.2.1 Configuration Data Architecture
+- **Hierarchical Configuration**: Layered settings with inheritance
+- **Versioned Data Structures**: Backward compatibility and migration
+- **Atomic Updates**: Transaction-like configuration changes
+
+#### 5.2.2 Sensor Data Architecture  
+- **Pipeline Processing**: Staged data transformation and filtering
+- **Temporal Data Handling**: Time-series data management
+- **Data Fusion Patterns**: Multi-source data integration
+
+#### 5.2.3 State Management Architecture
+- **Centralized State Store**: Single source of truth for system state
+- **State Change Notifications**: Event-driven state propagation
+- **State Persistence**: Critical state preservation across power cycles
+
+### 5.3 Memory Architecture
+
+- **Memory Pool Strategy**: Fixed-size pools for predictable allocation
+- **Buffer Management**: Circular buffers for streaming data
+- **Stack Management**: Per-thread stack monitoring and protection
+
+---
+
+## 6. EXTENSIBILITY ARCHITECTURE
+
+*Addresses Requirements: REQ-EXT-001 to REQ-EXT-012, REQ-HW-EXT-001 to REQ-HW-EXT-004*
+
+### 6.1 Plugin Architecture Framework
+
+The system supports extensibility through a comprehensive plugin architecture:
+
+#### 6.1.1 Driver Plugin System
+- **Standardized Driver Interface**: Common contract for all hardware drivers
+- **Dynamic Driver Discovery**: Runtime detection and registration
+- **Driver Capability Reporting**: Self-describing driver capabilities
+
+#### 6.1.2 Protocol Extension Framework
+- **Protocol Handler Registration**: Runtime protocol addition
+- **Command Extension Points**: New command family integration
+- **Response Format Extensibility**: Custom response format support
+
+#### 6.1.3 Feature Plugin Architecture
+- **Service Plugin Interface**: High-level feature additions
+- **Hook Points**: Integration points throughout the system
+- **Dependency Management**: Plugin dependency resolution
+
+### 6.2 Configuration-Driven Architecture
+
+- **Feature Flags**: Runtime feature enabling/disabling
+- **Hardware Capability Detection**: Automatic feature adaptation
+- **Compilation Variants**: Build-time feature selection
+
+### 6.3 Future-Proofing Strategies
+
+- **Abstract Interface Design**: Interfaces designed for extensibility
+- **Versioning Strategy**: Forward and backward compatibility planning
+- **Migration Framework**: Automated upgrade path provision
+
+---
+
+## 7. SAFETY AND RELIABILITY ARCHITECTURE
+
+*Addresses Requirements: REQ-SAF-001 to REQ-SAF-005, REQ-REL-001 to REQ-REL-007*
+
+### 7.1 Safety-by-Design Architecture
+
+#### 7.1.1 Layered Safety Model
+- **Hardware Safety Layer**: Physical limit switches and emergency stops
+- **Software Safety Layer**: Algorithmic limit checking and validation
+- **Protocol Safety Layer**: Command validation and confirmation
+
+#### 7.1.2 Fail-Safe Architecture
+- **Safe State Definition**: Well-defined safe system states
+- **Graceful Degradation**: Reduced functionality under fault conditions
+- **Recovery Procedures**: Automatic and manual recovery mechanisms
+
+### 7.2 Error Handling Architecture
+
+#### 7.2.1 Hierarchical Error Handling
+- **Local Error Handling**: Component-level error management
+- **Service-Level Error Handling**: Cross-component error coordination
+- **System-Level Error Handling**: Global error management and recovery
+
+#### 7.2.2 Error Propagation Patterns
+- **Error Code Propagation**: Structured error information flow
+- **Exception Safety**: Resource management under error conditions
+- **Error Event Broadcasting**: System-wide error notification
+
+### 7.3 Reliability Patterns
+
+- **Watchdog Architecture**: Multi-level system monitoring
+- **Health Check Framework**: Continuous system health assessment
+- **Redundancy Patterns**: Critical path redundancy where feasible
+
+---
+
+## 8. PERFORMANCE ARCHITECTURE
+
+*Addresses Requirements: REQ-PERF-001 to REQ-PERF-007*
+
+### 8.1 Real-Time Performance Architecture
+
+#### 8.1.1 Timing Architecture
+- **Deterministic Execution Paths**: Predictable timing behavior
+- **Priority-Based Scheduling**: Critical task prioritization
+- **Interrupt Management**: Minimal interrupt latency patterns
+
+#### 8.1.2 Resource Management Architecture
+- **Memory Pool Strategy**: Predictable memory allocation
+- **CPU Usage Monitoring**: Resource utilization tracking
+- **Resource Contention Resolution**: Fair resource access patterns
+
+### 8.2 Optimization Strategies
+
+- **Algorithm Selection**: Performance-appropriate algorithm choices
+- **Caching Architecture**: Strategic data caching for performance
+- **Lazy Evaluation**: Deferred computation where appropriate
+
+---
+
+## 9. INTEGRATION ARCHITECTURE
+
+*Addresses Requirements: REQ-COMPAT-001 to REQ-COMPAT-008, REQ-COMP-001 to REQ-COMP-003*
+
+### 9.1 External System Integration
+
+#### 9.1.1 Astronomy Software Integration
+- **Standard Protocol Compliance**: Full LX200 protocol implementation
+- **Extension Protocol Support**: Enhanced functionality while maintaining compatibility
+- **Multiple Client Support**: Concurrent connection handling
+
+#### 9.1.2 Hardware Integration Patterns
+- **Legacy Hardware Support**: Backward compatibility with existing hardware
+- **Modern Hardware Exploitation**: Advanced feature utilization
+- **Cross-Platform Compatibility**: Consistent behavior across platforms
+
+### 9.2 Standards Compliance Architecture
+
+- **Protocol Compliance Framework**: Automated compliance verification
+- **Testing Architecture**: Comprehensive compatibility testing
+- **Certification Support**: Standards compliance documentation
+
+---
+
+## 10. DEPLOYMENT AND CONFIGURATION ARCHITECTURE
+
+*Addresses Requirements: REQ-FW-BUILD-001 to REQ-UX-005, REQ-CFG-001 to REQ-CFG-004*
+
+### 10.1 Build and Deployment Architecture
+
+#### 10.1.1 Multi-Target Build System
+- **Platform Abstraction**: Single codebase, multiple targets
+- **Feature Configuration**: Compile-time feature selection
+- **Automated Build Pipeline**: Continuous integration and deployment
+
+#### 10.1.2 Firmware Distribution Architecture
+- **Secure Update Mechanism**: Signed firmware with verification
+- **Rollback Capability**: Safe update with recovery options
+- **Configuration Preservation**: Settings maintained across updates
+
+### 10.2 Runtime Configuration Architecture
+
+- **Hierarchical Configuration**: Multiple configuration layers
+- **Dynamic Reconfiguration**: Runtime setting changes
+- **Configuration Validation**: Settings verification and migration
+
+---
+
+## 11. ARCHITECTURAL DECISION RECORDS
+
+### 11.1 Key Architectural Decisions
+
+**ADR-001: Multi-Layered Architecture**
+- *Decision*: Adopt layered architecture with clear abstraction boundaries
+- *Rationale*: Separation of concerns, testability, maintainability
+- *Trade-offs*: Performance overhead vs. code organization
+
+**ADR-002: Plugin-Based Extensibility**
+- *Decision*: Implement comprehensive plugin architecture
+- *Rationale*: Future extensibility, hardware diversity support
+- *Trade-offs*: Complexity vs. flexibility
+
+**ADR-003: Priority-Based Threading**
+- *Decision*: Use priority-based multi-threading with Zephyr RTOS
+- *Rationale*: Real-time performance, deterministic behavior
+- *Trade-offs*: Complexity vs. performance guarantees
+
+**ADR-004: Event-Driven Communication**
+- *Decision*: Implement event-driven inter-component communication
+- *Rationale*: Loose coupling, scalability, maintainability
+- *Trade-offs*: Debugging complexity vs. architectural flexibility
+
+---
+
+## 12. CONCLUSION AND NEXT STEPS
+
+### 12.1 Architectural Summary
+
+The OpenAstroFirmware architecture provides a robust, extensible, and maintainable foundation for telescope mount control systems. The design emphasizes:
+
+- **Modularity** through clear layer separation and component isolation
+- **Extensibility** via comprehensive plugin architectures
+- **Performance** through real-time design patterns and optimization
+- **Safety** via fail-safe mechanisms and comprehensive error handling
+- **Standards Compliance** through well-defined protocol implementations
+
+### 12.2 Implementation Guidance
+
+This architectural design provides the framework for detailed design and implementation. The next phases should focus on:
+
+1. **Detailed Interface Specifications**: Define precise contracts between components
+2. **Implementation Planning**: Break down architecture into implementable components
+3. **Prototype Development**: Validate architectural decisions through prototyping
+4. **Testing Strategy**: Develop comprehensive testing approaches for each layer
+
+---
+
+## 13. REVISION HISTORY
+
+| Version | Date | Author | Description |
+|---------|------|--------|-------------|
+| 1.0 | August 2, 2025 | Andre Stefanov | Initial architectural design specification |
+
+---
+
+*This document establishes the architectural foundation for OpenAstroFirmware implementation, providing guidance for detailed design and development phases.*
diff --git a/specs/requirements.md b/specs/requirements.md
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+# OpenAstroFirmware Requirements Specification
+
+**Document Version:** 1.0  
+**Date:** August 2, 2025  
+**Project:** OpenAstroFirmware - Zephyr RTOS-based Telescope Mount Control System  
+
+## 1. INTRODUCTION
+
+### 1.1 Purpose
+This document specifies the functional and non-functional requirements for OpenAstroFirmware, a Zephyr RTOS-based firmware system for controlling astronomical telescope mounts. The firmware is the successor to OpenAstroTracker-Firmware and provides enhanced capabilities for precision telescope mount control.
+
+### 1.2 Scope
+OpenAstroFirmware SHALL provide telescope mount control capabilities including:
+- LX200 protocol implementation for telescope communication
+- Stepper motor control for RA and DEC axes
+- Cross-platform development and simulation
+- Hardware abstraction for multiple controller boards
+- Real-time tracking and positioning algorithms
+
+### 1.3 Definitions and Acronyms
+- **RA**: Right Ascension
+- **DEC**: Declination  
+- **LX200**: Meade telescope serial communication protocol
+- **RTOS**: Real-Time Operating System
+- **TMC**: Trinamic stepper motor controller
+- **OAT**: OpenAstroTracker
+- **OAM**: OpenAstroMount
+- **EARS**: Easy Approach to Requirements Syntax
+
+---
+
+## 2. SYSTEM OVERVIEW REQUIREMENTS
+
+### 2.1 Platform Requirements
+
+**REQ-SYS-001:** The system SHALL be built on Zephyr RTOS version 4.2.0.
+
+**REQ-SYS-002:** The system SHALL support 32-bit microcontroller platforms only.
+
+**REQ-SYS-003:** The system SHALL support I2C communication interface.
+
+**REQ-SYS-004:** The system SHALL provide native simulation capabilities for development and testing.
+
+### 2.2 Hardware Platform Requirements
+
+**REQ-HW-001:** The system SHALL support MKS Robin Nano (STM32F407xx-based) as the primary hardware platform.
+
+**REQ-HW-002:** The system SHALL support native_sim platform for development and testing.
+
+**REQ-HW-003:** The system SHALL support STM32F407xx microcontroller family.
+
+**REQ-HW-004:** When multiple hardware variations are present, the system SHALL support all variations through compile-time configuration.
+
+### 2.3 Hardware Extensibility Requirements
+
+**REQ-HW-EXT-001:** The system SHALL provide a hardware abstraction layer that allows addition of new microcontroller board support without modifying core functionality.
+
+**REQ-HW-EXT-002:** The system SHALL support board-specific configuration files that define hardware capabilities, pin mappings, and peripheral configurations.
+
+**REQ-HW-EXT-003:** The system SHALL use Zephyr device tree system to enable hardware-specific configurations for new board variants.
+
+**REQ-HW-EXT-004:** The system SHALL provide standardized interfaces for integrating new hardware platforms while maintaining compatibility with existing firmware features.
+
+---
+
+## 3. COMMUNICATION REQUIREMENTS
+
+### 3.1 LX200 Protocol Requirements
+
+**REQ-COM-001:** The system SHALL implement the Meade LX200 telescope serial command protocol.
+
+**REQ-COM-002:** The system SHALL support serial communication at 115200 baud rate as default.
+
+**REQ-COM-003:** The system SHALL parse LX200 commands with format `:<command>[parameters]#`.
+
+**REQ-COM-004:** The system SHALL validate LX200 command prefix `:` and terminator `#`.
+
+**REQ-COM-005:** The system SHALL support the following LX200 command families:
+- Initialize commands (I) - Initialize scope and enter serial control mode
+- Sync control commands (CM) - Synchronize telescope coordinates
+- Distance commands (D) - Query mount slewing status
+- Focuser control commands (F) - Focuser movement and control
+- Get telescope information commands (G) - Retrieve telescope status and coordinates
+- GPS commands (g) - GPS time and location setting
+- Home/Park commands (h) - Home, park, and unpark operations
+- Movement commands (M) - Slewing, tracking, and guiding operations
+- Stop movement commands (Q) - Stop motors and quit control mode
+- Slew rate commands (R) - Set slewing rates
+- Set telescope parameters commands (S) - Set coordinates, time, date, and location
+- Extended OAT commands (X) - OpenAstroTech-specific extended functionality
+
+**REQ-COM-006:** The system SHALL support coordinate formats:
+- Right Ascension: HH:MM:SS (hours, minutes, seconds)
+- Declination: sDD*MM:SS or sDD*MM'SS (sign, degrees, minutes, seconds)
+- Longitude: sDDD*MM (sign, degrees, minutes) or DDD (0-360 degrees west from Greenwich)
+- Latitude: sDD*MM (sign, degrees, minutes)
+- Hour Angle: HH:MM (hours, minutes)
+- Time formats: HH:MM:SS (24-hour) and MM/DD/YY (date)
+- Extended sync format: sDD*MM:SS.HH:MM:SS (DEC and RA combined)
+
+**REQ-COM-007:** The system SHALL process serial message commands sequentially but asynchronously in the background.
+
+**REQ-COM-008:** The system SHALL return appropriate responses to LX200 commands according to protocol specification.
+
+**REQ-COM-009:** The system SHALL handle buffer overflow conditions gracefully when command length exceeds maximum.
+
+**REQ-COM-010:** The system SHALL support command parsing with maximum command length of 32 characters.
+
+### 3.2 Wireless Communication Requirements
+
+**REQ-COM-011:** The system SHOULD support WiFi connectivity for wireless telescope control.
+
+**REQ-COM-012:** The system SHOULD support Bluetooth connectivity for wireless telescope control.
+
+### 3.3 Extended LX200 Protocol Requirements
+
+**REQ-COM-013:** The system SHALL support OpenAstroTech-specific extended LX200 commands (X-family) for enhanced functionality.
+
+**REQ-COM-014:** The system SHALL implement mount status reporting with the `:GX#` command returning comma-delimited status information including mount state, motion state, stepper positions, and coordinates.
+
+**REQ-COM-015:** The system SHALL support GPS-based time and location setting with configurable timeout using `:gTnnn#` command.
+
+**REQ-COM-016:** The system SHALL support Hall sensor-based auto-homing for RA and DEC axes with configurable search direction and range.
+
+**REQ-COM-017:** The system SHALL support stepper motor direct control commands for precise positioning and calibration.
+
+**REQ-COM-018:** The system SHALL support drift alignment procedures for polar alignment assistance.
+
+**REQ-COM-019:** The system SHALL support digital level integration for mount leveling when hardware is present.
+
+**REQ-COM-020:** The system SHALL support network status reporting for WiFi-enabled hardware platforms.
+
+**REQ-COM-021:** The system SHALL support backlash correction configuration and reporting.
+
+**REQ-COM-022:** The system SHALL support DEC axis limit setting and enforcement for safety.
+
+**REQ-COM-023:** The system SHALL support tracking speed adjustment and manual slewing speed control.
+
+**REQ-COM-024:** The system SHALL support mount configuration reporting including hardware capabilities and driver settings.
+
+### 3.4 Network Communication Requirements
+
+**REQ-NET-001:** The system SHOULD support WiFi connectivity on ESP32-based hardware platforms.
+
+**REQ-NET-002:** When WiFi is enabled, the system SHALL provide network status reporting including connection state, IP address, and hostname.
+
+**REQ-NET-003:** When WiFi is enabled, the system SHALL support configurable network parameters including SSID and host settings.
+
+---
+
+## 4. MOUNT CONTROL REQUIREMENTS
+
+### 4.1 RA and DEC Axis Requirements
+
+**REQ-AXIS-001:** The system SHALL be able to slew both RA and DEC axes by specified numbers of degrees.
+
+**REQ-AXIS-002:** The system SHALL be able to slew both RA and DEC axes at various configurable rates until commanded to stop.
+
+**REQ-AXIS-003:** The system SHALL maintain constant RA tracking speed without changing coordinate position.
+
+**REQ-AXIS-004:** The system SHALL support guiding corrections on both axes by running faster/slower (RA) or forward/reverse (DEC) for specified durations with millisecond accuracy without changing coordinate reference.
+
+**REQ-AXIS-005:** The system SHALL allow coordinate synchronization for both RA and DEC axes from connected telescope control software.
+
+**REQ-AXIS-006:** The system SHALL maintain home position reference through all RA and DEC operations.
+
+**REQ-AXIS-007:** The system SHOULD support homing operations using position sensors for both RA and DEC axes.
+
+### 4.2 Mount Operation Requirements
+
+**REQ-MNT-001:** RA and DEC axis operations SHALL be independent and capable of simultaneous execution.
+
+**REQ-MNT-002:** The system SHALL convert RA/DEC coordinates to stepper motor target positions using the solution with the longest safe operational time.
+
+**REQ-MNT-003:** The system SHALL be able to return the remaining safe operational time.
+
+**REQ-MNT-004:** The system SHALL be able to return time to meridian crossing for the current position.
+
+**REQ-MNT-005:** The system SHALL support both Northern and Southern hemisphere operations.
+
+**REQ-MNT-006:** The system SHALL maintain awareness of current date, time, and geographic location for hour angle calculations.
+
+**REQ-MNT-007:** The system SHALL support meridian flip detection and safe operational time calculation based on RA ring position.
+
+**REQ-MNT-008:** The system SHALL support Hall sensor-based auto-homing with configurable search parameters and offset correction.
+
+**REQ-MNT-009:** The system SHALL support backlash correction for RA axis with configurable overshoot and backtrack steps.
+
+**REQ-MNT-010:** The system SHALL support DEC axis limit enforcement with configurable upper and lower position limits.
+
+**REQ-MNT-011:** The system SHALL support parking operations that move to home position and advance to parking offset before stopping all movement.
+
+**REQ-MNT-012:** The system SHALL support unparking operations that resume tracking from parked state.
+
+### 4.3 Guiding Requirements
+
+**REQ-GUIDE-001:** The system SHALL support guide pulse operations with directional control (North, South, East, West).
+
+**REQ-GUIDE-002:** The system SHALL support guide pulse duration control with millisecond precision from 1ms to 9999ms.
+
+**REQ-GUIDE-003:** The system SHALL support RA guiding by adjusting tracking speed (faster/slower) for the specified duration.
+
+**REQ-GUIDE-004:** The system SHALL support DEC guiding by running motor at constant speed in forward/reverse direction for the specified duration.
+
+**REQ-GUIDE-005:** The system SHALL provide guiding status reporting to indicate when guiding operations are active.
+
+### 4.4 ALT/AZ Mount Support Requirements
+
+**REQ-ALT-001:** When configured for ALT/AZ mode, the system SHALL be able to slew altitude and azimuth axes by specified degrees.
+
+**REQ-ALT-002:** When configured for ALT/AZ mode, the system SHALL be able to slew at various rates until commanded to stop.
+
+**REQ-ALT-003:** The system SHALL support ALT/AZ functionality for polar alignment of equatorial mounts.
+
+**REQ-ALT-004:** When configured for ALT/AZ mode, the system SHOULD support configurable minimum and maximum position limits and enforce axis movement restrictions accordingly.
+
+**REQ-ALT-005:** When configured for ALT/AZ mode, the system SHOULD save home and current positions to non-volatile memory.
+
+---
+
+## 5. STEPPER MOTOR CONTROL REQUIREMENTS
+
+### 5.1 Stepper Driver Requirements
+
+**REQ-STEP-001:** The system SHALL support TMC stepper motor controllers (TMC22xx, TMC50xx, TMC51xx series).
+
+**REQ-STEP-002:** The system SHALL support GPIO-based stepper motor drivers.
+
+**REQ-STEP-003:** The system SHALL support simulation/testing stepper motor drivers for development.
+
+**REQ-STEP-004:** All stepper motor operations SHALL be executed asynchronously.
+
+**REQ-STEP-005:** The system SHOULD provide event notifications when stepper motors complete movements.
+
+### 5.2 Stepper Motor Control API Requirements
+
+**REQ-STEP-006:** The system SHALL provide stepper motor enable/disable functionality.
+
+**REQ-STEP-007:** The system SHALL support configurable micro-step resolutions (1, 2, 4, 8, 16, 32, 64, 128, 256 steps per full step).
+
+**REQ-STEP-008:** The system SHALL support setting and getting actual stepper motor positions.
+
+**REQ-STEP-009:** The system SHALL support setting reference positions for stepper motors.
+
+**REQ-STEP-010:** The system SHALL support move-by-steps and move-to-position commands.
+
+**REQ-STEP-011:** The system SHALL support continuous running in specified directions.
+
+**REQ-STEP-012:** The system SHALL support immediate stop commands for stepper motors.
+
+**REQ-STEP-013:** The system SHALL provide stepper motor movement status (moving/stopped).
+
+**REQ-STEP-014:** The system SHALL support configurable step timing intervals with nanosecond precision.
+
+**REQ-STEP-015:** The system SHALL support event callbacks for stepper motor operations.
+
+### 5.3 Motor Driver Integration Requirements
+
+**REQ-STEP-016:** The system SHALL integrate Zephyr stepper framework with mount control classes.
+
+**REQ-STEP-017:** The system SHALL support limit switch integration for stepper motor safety.
+
+**REQ-STEP-018:** The system SHALL provide basic calibration procedures for stepper motor setup.
+
+### 5.4 Stepper Driver Extensibility Requirements
+
+**REQ-STEP-EXT-001:** The system SHALL provide a standardized stepper driver interface that allows addition of new stepper controller types without modifying core mount control logic.
+
+**REQ-STEP-EXT-002:** The system SHALL support plugin-based architecture for integrating new stepper motor driver types (e.g., new TMC series, other manufacturer drivers).
+
+**REQ-STEP-EXT-003:** The system SHALL provide configuration mechanisms to specify stepper driver parameters (current limits, microstepping, acceleration curves) for new driver types.
+
+**REQ-STEP-EXT-004:** The system SHALL support runtime detection and initialization of different stepper driver types on the same system.
+
+**REQ-STEP-EXT-005:** The system SHALL provide standardized calibration and testing interfaces that work with all supported stepper driver types.
+
+---
+
+## 6. TRACKING AND POSITIONING REQUIREMENTS
+
+### 6.1 Tracking Requirements
+
+**REQ-TRK-001:** The system SHALL support sidereal tracking rate.
+
+**REQ-TRK-002:** The system SHALL support solar tracking rate.
+
+**REQ-TRK-003:** The system SHALL support lunar tracking rate.
+
+**REQ-TRK-004:** The system SHALL allow tracking to be enabled and disabled.
+
+**REQ-TRK-005:** The system SHALL support custom tracking rate adjustments.
+
+### 6.2 Slew Rate Requirements
+
+**REQ-SLEW-001:** The system SHALL support guide rate (slowest, 'G' rate).
+
+**REQ-SLEW-002:** The system SHALL support centering rate (medium-slow, 'C' rate).
+
+**REQ-SLEW-003:** The system SHALL support medium rate (medium-fast, 'M' rate).
+
+**REQ-SLEW-004:** The system SHALL support slew rate (fastest, 'S' rate).
+
+**REQ-SLEW-005:** The system SHALL allow dynamic slew rate changes during operation.
+
+**REQ-SLEW-006:** The system SHALL support manual slewing mode with configurable speeds up to 2.5 degrees/second.
+
+### 6.3 Coordinate System Requirements
+
+**REQ-COORD-001:** The system SHALL support equatorial coordinate system (RA/DEC).
+
+**REQ-COORD-002:** The system SHALL support horizontal coordinate system (ALT/AZ).
+
+**REQ-COORD-003:** The system SHALL validate coordinate ranges before processing.
+
+**REQ-COORD-004:** The system SHALL support coordinate precision modes (high and low precision).
+
+**REQ-COORD-005:** The system SHALL maintain coordinate accuracy throughout operations.
+
+---
+
+## 7. FOCUSER CONTROL REQUIREMENTS
+
+**REQ-FOC-001:** When focuser is connected, the system SHALL be able to slew the focuser at various rates until commanded to stop.
+
+**REQ-FOC-002:** When focuser is connected, the system SHALL support slewing to specific target positions.
+
+**REQ-FOC-003:** When focuser is connected, the system SHALL allow setting motor position reference.
+
+**REQ-FOC-004:** When focuser is connected, the system SHALL provide position feedback.
+
+**REQ-FOC-005:** When focuser is connected, the system SHALL support inward movement (toward objective) with `:F+#` command.
+
+**REQ-FOC-006:** When focuser is connected, the system SHALL support outward movement (away from objective) with `:F-#` command.
+
+**REQ-FOC-007:** When focuser is connected, the system SHALL support configurable speed control with 4 speed levels (1=slowest, 4=fastest).
+
+**REQ-FOC-008:** When focuser is connected, the system SHALL support focuser movement status reporting (idle/moving).
+
+**REQ-FOC-009:** When focuser is connected, the system SHALL support immediate stop functionality.
+
+---
+
+## 8. ACCESSORY CONTROL REQUIREMENTS
+
+### 8.1 Dew Heater Requirements
+
+**REQ-DEW-001:** The system SHOULD support dew heater control functionality.
+
+**REQ-DEW-002:** When dew heater is connected, the system SHALL provide power control (on/off) for dew heater outputs.
+
+**REQ-DEW-003:** When dew heater is connected, the system SHOULD support variable power level control (PWM) for dew heater outputs.
+
+**REQ-DEW-004:** When dew heater is connected, the system SHALL support multiple independent dew heater channels.
+
+**REQ-DEW-005:** When dew heater is connected, the system SHOULD support temperature-based automatic dew heater control.
+
+**REQ-DEW-006:** When dew heater is connected, the system SHALL provide dew heater status monitoring and reporting.
+
+### 8.2 Digital Level Requirements
+
+**REQ-LEVEL-001:** The system SHOULD support digital level integration for mount leveling assistance.
+
+**REQ-LEVEL-002:** When digital level is connected, the system SHALL provide pitch and roll value reporting.
+
+**REQ-LEVEL-003:** When digital level is connected, the system SHALL support reference pitch and roll value setting and storage.
+
+**REQ-LEVEL-004:** When digital level is connected, the system SHALL provide temperature reporting.
+
+**REQ-LEVEL-005:** When digital level is connected, the system SHALL support enable/disable control.
+
+---
+
+## 9. SAFETY AND CONTROL REQUIREMENTS
+
+### 9.1 Safety Requirements
+
+**REQ-SAF-001:** The system SHALL implement software limits to prevent mechanical damage.
+
+**REQ-SAF-002:** The system SHALL support emergency stop functionality that immediately halts all motor movements.
+
+**REQ-SAF-003:** The system SHALL implement collision detection and prevention mechanisms.
+
+**REQ-SAF-004:** The system SHALL support end switch detection for RA and DEC axes.
+
+**REQ-SAF-005:** The system SHALL implement timeout mechanisms for command responses.
+
+### 9.2 Power Management Requirements
+
+**REQ-PWR-001:** The system SHALL provide basic power management capabilities.
+
+**REQ-PWR-002:** The system SHALL support graceful shutdown procedures.
+
+### 9.3 System Monitoring Requirements
+
+**REQ-MON-001:** The system SHALL monitor system status and provide error reporting.
+
+---
+
+## 10. SENSOR SUPPORT REQUIREMENTS
+
+**REQ-SNS-001:** The system SHALL support RA and DEC axis end switches.
+
+**REQ-SNS-002:** The system SHALL support RA and DEC axis homing switches.
+
+**REQ-SNS-003:** The system SHOULD support temperature sensor integration.
+
+**REQ-SNS-004:** The system SHALL provide sensor status monitoring and reporting.
+
+### 10.1 GPS Requirements
+
+**REQ-GPS-001:** The system SHOULD support GPS module integration for automatic time and location setting.
+
+**REQ-GPS-002:** When GPS is connected, the system SHALL support automatic time and location setting with configurable timeout.
+
+**REQ-GPS-003:** When GPS is connected, the system SHALL support blocking GPS operations with 2-minute default timeout.
+
+**REQ-GPS-004:** When GPS is connected, the system SHALL support custom timeout GPS operations for non-blocking usage.
+
+**REQ-GPS-005:** When GPS is connected, the system SHALL provide GPS acquisition status reporting (success/timeout).
+
+### 10.2 Sensor Extensibility Requirements
+
+**REQ-SNS-EXT-001:** The system SHALL provide a standardized sensor interface that allows addition of new sensor types without modifying core functionality.
+
+**REQ-SNS-EXT-002:** The system SHALL support plugin-based architecture for integrating new sensor types (temperature, humidity, pressure, accelerometer, magnetometer, etc.).
+
+**REQ-SNS-EXT-003:** The system SHALL provide configuration mechanisms to define sensor-specific parameters, communication protocols, and data formats.
+
+**REQ-SNS-EXT-004:** The system SHALL support runtime sensor discovery and initialization for dynamically configurable sensor configurations.
+
+**REQ-SNS-EXT-005:** The system SHALL provide standardized sensor data reporting interfaces that work with all supported sensor types.
+
+**REQ-SNS-EXT-006:** The system SHALL support sensor-specific calibration procedures and data processing algorithms.
+
+---
+
+## 11. USER INTERFACE REQUIREMENTS
+
+### 11.1 Display Support Requirements
+
+**REQ-UI-001:** The system SHOULD support information-only displays for mount status visualization.
+
+**REQ-UI-002:** The system SHOULD support LCD screens (small, large, color, monochrome).
+
+**REQ-UI-003:** When display is present, the system SHOULD provide mount status information display.
+
+### 11.2 Input Device Requirements
+
+**REQ-UI-004:** The system SHOULD support button input devices.
+
+**REQ-UI-005:** The system SHOULD support joystick input devices.
+
+**REQ-UI-006:** The system SHOULD support rotary encoder with button input devices.
+
+**REQ-UI-007:** The system SHOULD support touch screen input devices.
+
+### 11.3 Interactive Operations Requirements
+
+**REQ-UI-008:** When interactive input devices are present, the system SHOULD support manual axis movement in any direction at various speeds.
+
+**REQ-UI-009:** When interactive input devices are present, the system SHOULD support starting and stopping tracking.
+
+**REQ-UI-010:** When interactive input devices are present, the system SHOULD support finding home position.
+
+**REQ-UI-011:** When interactive input devices are present, the system SHOULD support going to home position.
+
+**REQ-UI-012:** When interactive input devices are present, the system SHOULD support entering target coordinates and initiating slews.
+
+---
+
+## 12. COMPATIBILITY REQUIREMENTS
+
+### 12.1 Software Compatibility Requirements
+
+**REQ-COMPAT-001:** The system SHALL be compatible with ASCOM telescope control framework.
+
+**REQ-COMPAT-002:** The system SHALL be compatible with INDI telescope control framework.
+
+**REQ-COMPAT-003:** The system SHALL be compatible with N.I.N.A. (Nighttime Imaging 'N' Astronomy) software.
+
+**REQ-COMPAT-004:** The system SHALL be compatible with SkySafari telescope control software.
+
+**REQ-COMPAT-005:** The system SHALL be compatible with OatControl software.
+
+### 12.2 Hardware Compatibility Requirements
+
+**REQ-COMPAT-006:** The system SHALL support OpenAstroTracker (OAT) mount hardware.
+
+**REQ-COMPAT-007:** The system SHALL support OpenAstroMount (OAM) mount hardware.
+
+**REQ-COMPAT-008:** The system SHALL support OpenAstroExplorer (OAE) mount hardware.
+
+---
+
+## 13. PERFORMANCE REQUIREMENTS
+
+### 13.1 Timing Requirements
+
+**REQ-PERF-001:** The system SHALL maintain tracking accuracy with sub-arcsecond precision.
+
+**REQ-PERF-002:** The system SHALL respond to LX200 commands within 100 milliseconds under normal operating conditions.
+
+**REQ-PERF-003:** The system SHALL support guiding corrections with millisecond timing accuracy.
+
+**REQ-PERF-004:** The system SHALL maintain real-time tracking performance without interruption.
+
+### 13.2 Resource Requirements
+
+**REQ-PERF-005:** The system SHALL operate within the memory constraints of supported hardware platforms.
+
+**REQ-PERF-006:** The system SHALL minimize CPU usage to ensure real-time operation.
+
+**REQ-PERF-007:** The system SHALL handle concurrent operations (RA/DEC movement, communication, tracking) without performance degradation.
+
+---
+
+## 14. RELIABILITY REQUIREMENTS
+
+### 14.1 Error Handling Requirements
+
+**REQ-REL-001:** The system SHALL implement comprehensive error handling for all major subsystems.
+
+**REQ-REL-002:** The system SHALL provide meaningful error messages and status codes.
+
+**REQ-REL-003:** The system SHALL recover gracefully from communication errors.
+
+**REQ-REL-004:** The system SHALL maintain system state consistency during error conditions.
+
+### 14.2 Robustness Requirements
+
+**REQ-REL-005:** The system SHALL continue operating when non-critical errors occur.
+
+**REQ-REL-006:** The system SHALL validate all input parameters before processing.
+
+**REQ-REL-007:** The system SHALL implement watchdog mechanisms for critical operations.
+
+---
+
+## 15. DEVELOPMENT AND TESTING REQUIREMENTS
+
+### 15.1 Development Environment Requirements
+
+**REQ-DEV-001:** The system SHALL support West build system for project management.
+
+**REQ-DEV-002:** The system SHALL support CMake build system.
+
+**REQ-DEV-003:** The system SHALL provide comprehensive logging capabilities for debugging.
+
+**REQ-DEV-004:** The system SHALL support in-hardware debugging capabilities.
+
+### 15.2 Testing Requirements
+
+**REQ-TEST-001:** The system SHALL include automated test suites for major components.
+
+**REQ-TEST-002:** The system SHALL support unit testing of individual modules.
+
+**REQ-TEST-003:** The system SHALL support integration testing with hardware simulation.
+
+**REQ-TEST-004:** The system SHALL provide test coverage for LX200 protocol implementation.
+
+**REQ-TEST-005:** The system SHALL provide test coverage for stepper motor control functions.
+
+---
+
+## 16. FIRMWARE DISTRIBUTION AND UPDATE REQUIREMENTS
+
+### 16.1 Firmware Build and Distribution Requirements
+
+**REQ-FW-BUILD-001:** The system SHALL provide automated firmware build processes that generate distributable firmware images for all supported hardware platforms.
+
+**REQ-FW-BUILD-002:** The system SHALL generate firmware images in standard formats suitable for different update mechanisms (binary, hex, signed images).
+
+**REQ-FW-BUILD-003:** The system SHALL provide versioned firmware releases with clear version identification and changelog information.
+
+**REQ-FW-BUILD-004:** The system SHALL support firmware image signing and verification for secure updates.
+
+**REQ-FW-BUILD-005:** The system SHALL provide pre-built firmware images for common hardware configurations through official distribution channels.
+
+### 16.2 Firmware Update Mechanisms Requirements
+
+**REQ-FW-UPDATE-001:** The system SHALL support firmware updates via serial/USB connection for initial installation and recovery scenarios.
+
+**REQ-FW-UPDATE-002:** The system SHOULD support over-the-air (OTA) firmware updates when WiFi connectivity is available.
+
+**REQ-FW-UPDATE-003:** When OTA updates are supported, the system SHALL implement secure firmware download with integrity verification.
+
+**REQ-FW-UPDATE-004:** The system SHALL support firmware update rollback mechanisms to recover from failed updates.
+
+**REQ-FW-UPDATE-005:** The system SHALL maintain bootloader functionality that allows firmware recovery in case of corrupted main firmware.
+
+**REQ-FW-UPDATE-006:** During firmware updates, the system SHALL preserve critical user configuration and calibration data.
+
+### 16.3 Web-Based Configuration Requirements
+
+**REQ-WEB-001:** The system SHOULD provide an embedded web server for device configuration when WiFi is enabled.
+
+**REQ-WEB-002:** When web server is enabled, the system SHALL provide a responsive web user interface accessible through standard web browsers.
+
+**REQ-WEB-003:** The web interface SHALL allow configuration of mount parameters, stepper settings, sensor calibration, and network settings.
+
+**REQ-WEB-004:** The web interface SHALL provide real-time mount status monitoring and control capabilities.
+
+**REQ-WEB-005:** The web interface SHALL support firmware update initiation and progress monitoring.
+
+**REQ-WEB-006:** The web interface SHALL implement secure authentication to prevent unauthorized access to mount control and configuration.
+
+**REQ-WEB-007:** The web interface SHALL provide configuration backup and restore functionality.
+
+**REQ-WEB-008:** The web interface SHALL support configuration of LX200 protocol settings and extended command features.
+
+### 16.4 User Experience Requirements
+
+**REQ-UX-001:** The system SHALL provide clear documentation and guides for firmware installation and updates.
+
+**REQ-UX-002:** The system SHALL provide user-friendly tools or scripts to simplify the firmware update process for non-technical users.
+
+**REQ-UX-003:** The system SHALL provide clear status indicators and progress feedback during firmware update operations.
+
+**REQ-UX-004:** The system SHALL implement graceful error handling and recovery procedures for failed update attempts.
+
+**REQ-UX-005:** The system SHALL provide automated update notification mechanisms when new firmware versions are available.
+
+---
+
+## 17. FUTURE EXTENSIBILITY REQUIREMENTS
+
+### 17.1 Architecture Requirements
+
+**REQ-EXT-001:** The system SHALL provide modular architecture for easy feature addition.
+
+**REQ-EXT-002:** The system SHALL support plugin architecture for additional hardware drivers.
+
+**REQ-EXT-003:** The system SHALL provide clear APIs for extending functionality.
+
+**REQ-EXT-010:** The system SHALL provide comprehensive documentation and examples for adding new hardware board support.
+
+**REQ-EXT-011:** The system SHALL provide standardized interfaces and templates for integrating new stepper motor driver types.
+
+**REQ-EXT-012:** The system SHALL provide extensible sensor framework with well-defined interfaces for adding new sensor types and capabilities.
+
+### 17.2 Advanced Feature Support
+
+**REQ-EXT-004:** The system architecture SHALL support future implementation of custom object tracking (Sun, Moon, ISS, comets).
+
+**REQ-EXT-005:** The system architecture SHALL support future implementation of multiple mount types (German Equatorial, Fork, etc.).
+
+**REQ-EXT-006:** The system architecture SHALL support future implementation of automated calibration and alignment procedures.
+
+**REQ-EXT-007:** The system architecture SHALL support future implementation of periodic error correction (PEC).
+
+**REQ-EXT-008:** The system architecture SHALL support future implementation of WiFi/Bluetooth connectivity.
+
+**REQ-EXT-009:** The system architecture SHALL support future implementation of GPS integration for automatic site setup.
+
+---
+
+## 18. CONFIGURATION REQUIREMENTS
+
+### 18.1 Build Configuration Requirements
+
+**REQ-CFG-001:** The system SHALL use Zephyr's Kconfig system for configuration management.
+
+**REQ-CFG-002:** The system SHALL support board-specific configuration files.
+
+**REQ-CFG-003:** The system SHALL support device tree overlays for hardware configuration.
+
+**REQ-CFG-004:** The system SHALL provide interactive configuration menu (menuconfig).
+
+### 18.2 Runtime Configuration Requirements
+
+**REQ-CFG-005:** The system SHALL support runtime configuration of tracking rates.
+
+**REQ-CFG-006:** The system SHALL support runtime configuration of slew rates.
+
+**REQ-CFG-007:** The system SHALL support runtime configuration of coordinate precision modes.
+
+**REQ-CFG-008:** The system SHALL persist critical configuration parameters across power cycles.
+
+### 18.3 Non-Volatile Memory Requirements
+
+**REQ-NVM-001:** The system SHALL support EEPROM or equivalent non-volatile memory for persistent data storage.
+
+**REQ-NVM-002:** The system SHALL store all user-configurable settings in non-volatile memory including mount parameters, stepper motor settings, network configuration, and calibration data.
+
+**REQ-NVM-003:** The system SHALL implement a versioned configuration data structure that allows safe migration between firmware versions.
+
+**REQ-NVM-004:** The system SHALL detect configuration version mismatches during boot and perform automatic migration or reset to safe defaults when necessary.
+
+**REQ-NVM-005:** The system SHALL provide configuration backup and validation mechanisms to prevent corruption of critical settings.
+
+**REQ-NVM-006:** The system SHALL support factory reset functionality that restores all settings to safe default values.
+
+**REQ-NVM-007:** The system SHALL implement wear leveling or equivalent mechanisms to extend non-volatile memory lifespan during frequent updates.
+
+**REQ-NVM-008:** The system SHALL validate configuration data integrity using checksums or equivalent error detection methods.
+
+### 18.4 LX200 Configuration Interface Requirements
+
+**REQ-CFG-LX200-001:** The system SHALL support reading configuration parameters through LX200 extended commands (X-family).
+
+**REQ-CFG-LX200-002:** The system SHALL support writing configuration parameters through LX200 extended commands with immediate persistence to non-volatile memory.
+
+**REQ-CFG-LX200-003:** The system SHALL provide LX200 commands to query available configuration parameters and their valid value ranges.
+
+**REQ-CFG-LX200-004:** The system SHALL support configuration parameter validation before writing to non-volatile memory and return appropriate error responses for invalid values.
+
+**REQ-CFG-LX200-005:** The system SHALL provide LX200 commands to perform factory reset operations with appropriate confirmation mechanisms.
+
+**REQ-CFG-LX200-006:** The system SHALL support configuration backup and restore operations through LX200 extended commands.
+
+**REQ-CFG-LX200-007:** The system SHALL provide LX200 commands to query configuration version information and migration status.
+
+**REQ-CFG-LX200-008:** The system SHALL ensure atomic configuration updates through LX200 interface to prevent partial configuration corruption.
+
+---
+
+## 19. COMPLIANCE AND STANDARDS
+
+### 19.1 Code Quality Requirements
+
+**REQ-QUAL-001:** The system SHALL use the C++20 standard, adhere to the [Google C++ Style Guide](https://google.github.io/styleguide/cppguide.html) (or project-specified equivalent), and achieve at least 95% compliance as measured by automated style and static analysis tools (e.g., clang-tidy, cpplint).
+
+**REQ-QUAL-002:** The system SHALL maintain high code quality through automated analysis tools.
+
+**REQ-QUAL-003:** The system SHALL follow established architectural design patterns.
+
+**REQ-QUAL-004:** The system SHALL maintain comprehensive documentation for all public APIs.
+
+### 19.2 Protocol Compliance Requirements
+
+**REQ-COMP-001:** The system SHALL fully comply with the Meade LX200 command protocol specification.
+
+**REQ-COMP-002:** The system SHALL adhere to Zephyr RTOS coding standards and practices.
+
+**REQ-COMP-003:** The system SHALL comply with relevant astronomical coordinate system standards.
+
+---
+
+## 20. REVISION HISTORY
+
+| Version | Date | Author | Description |
+|---------|------|--------|-------------|
+| 1.0 | August 2, 2025 | Andre Stefanov | Initial requirements specification |
+
+---
+
+*This document was generated based on OpenAstroFirmware project specifications, source code analysis, and established requirements for astronomical telescope mount control systems.*