firmware-base/docs-c/core/Component.md

title	description	keywords
Component Class	A generic component class for embedded systems	component ESP-32 modbus industrial application

Component

Path: src/modbus/Component.h

Revision History: Initial documentation

The Component class represents a generic component for industrial applications. It provides a foundation for creating various types of components with consistent behavior and interface. These components can be integrated into a modbus-based industrial control system.

REQUIREMENTS

• ESP-32 platform
• No specific hardware pins required as this is a base class

PROVIDES

• Component class - A base class for creating components in an industrial application
• Constants:
  • COMPONENT_DEFAULT - Default run flags for a component
  • COMPONENT_NO_ID - Default ID for a component

FEATURES

• Name-based component identification
• ID-based component identification
• Configurable run flags
• Support for owner-child relationship between components
• Type identification through enumeration
• Integration with Modbus communication

DEPENDENCIES

• WString.h - String handling
• ArduinoLog.h - Logging functionality
• Vector.h - Dynamic array implementation
• enums.h - Enumeration definitions
• constants.h - Constant definitions
• error_codes.h - Error code definitions
• macros.h - Macro definitions
• xtypes.h - Extended type definitions

graph TD
    Component --> WString
    Component --> ArduinoLog
    Component --> Vector
    Component --> enums
    Component --> constants
    Component --> error_codes
    Component --> macros
    Component --> xtypes
    ModbusBlock[ModbusBlockView] --> Component
    ModbusTCP --> Component
    RS485 --> Component
    Bridge --> Component

BEHAVIOUR

The Component class operates as a base class that defines common behavior for various industrial components.

graph TD
    Init[Initialize Component] --> Setup[Setup Component]
    Setup --> Loop[Run Loop]
    Loop --> |Run Flags| Loop
    Loop --> |End of loop| Cleanup[Cleanup]

TODOS

PERFORMANCE

• Consider implementing lazy initialization for components with high initialization costs
• Evaluate the memory footprint of components in resource-constrained environments

SECURITY

• Implement access control mechanisms for sensitive components
• Ensure proper validation of component IDs and types to prevent misuse

COMPLIANCE

• Review compliance with industrial standards for component interfaces
• Ensure compatibility with Modbus protocol specifications

RECOMMENDATIONS

• Extend this base class for specific component types rather than modifying the base class
• Use meaningful names and IDs for components to improve system maintainability
• Set appropriate run flags based on the component's intended behavior
• Organize components in a logical hierarchy using the owner-child relationship