97 lines
3.1 KiB
Markdown
97 lines
3.1 KiB
Markdown
---
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title: "Component Class"
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description: "A generic component class for embedded systems"
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keywords: ["component", "ESP-32", "modbus", "industrial application"]
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---
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## Component
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**Path**: [`src/modbus/Component.h`](../src/modbus/Component.h)
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**Revision History**: Initial documentation
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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.
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## REQUIREMENTS
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- ESP-32 platform
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- No specific hardware pins required as this is a base class
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## PROVIDES
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- `Component` class - A base class for creating components in an industrial application
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- Constants:
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- `COMPONENT_DEFAULT` - Default run flags for a component
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- `COMPONENT_NO_ID` - Default ID for a component
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## FEATURES
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- Name-based component identification
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- ID-based component identification
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- Configurable run flags
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- Support for owner-child relationship between components
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- Type identification through enumeration
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- Integration with Modbus communication
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## DEPENDENCIES
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- [`WString.h`](../src/WString.h) - String handling
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- [`ArduinoLog.h`](../src/ArduinoLog.h) - Logging functionality
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- [`Vector.h`](../src/Vector.h) - Dynamic array implementation
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- [`enums.h`](../src/modbus/enums.h) - Enumeration definitions
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- [`constants.h`](../src/modbus/constants.h) - Constant definitions
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- [`error_codes.h`](../src/modbus/error_codes.h) - Error code definitions
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- [`macros.h`](../src/modbus/macros.h) - Macro definitions
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- [`xtypes.h`](../src/modbus/xtypes.h) - Extended type definitions
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```mermaid
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graph TD
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Component --> WString
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Component --> ArduinoLog
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Component --> Vector
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Component --> enums
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Component --> constants
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Component --> error_codes
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Component --> macros
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Component --> xtypes
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ModbusBlock[ModbusBlockView] --> Component
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ModbusTCP --> Component
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RS485 --> Component
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Bridge --> Component
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```
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## BEHAVIOUR
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The Component class operates as a base class that defines common behavior for various industrial components.
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```mermaid
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graph TD
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Init[Initialize Component] --> Setup[Setup Component]
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Setup --> Loop[Run Loop]
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Loop --> |Run Flags| Loop
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Loop --> |End of loop| Cleanup[Cleanup]
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```
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## TODOS
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### PERFORMANCE
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- Consider implementing lazy initialization for components with high initialization costs
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- Evaluate the memory footprint of components in resource-constrained environments
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### SECURITY
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- Implement access control mechanisms for sensitive components
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- Ensure proper validation of component IDs and types to prevent misuse
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### COMPLIANCE
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- Review compliance with industrial standards for component interfaces
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- Ensure compatibility with Modbus protocol specifications
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### RECOMMENDATIONS
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- Extend this base class for specific component types rather than modifying the base class
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- Use meaningful names and IDs for components to improve system maintainability
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- Set appropriate run flags based on the component's intended behavior
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- Organize components in a logical hierarchy using the owner-child relationship |