System Functional Documentation

The system functional documentation provides a functional or capability description of F Prime and its components. This includes both a high level description of the functionality and corresponding requirements.

Core

• Framework - Core types, ports, components, serialization, commands, events, telemetry, parameters, time, buffers, and data products
• OSAL - Operating system abstraction layer for tasks, files, mutexes, queues, and system resources

Capabilities

• Command Dispatch - Command decoding, routing, and status tracking
• Dictionary - Dictionary (commands, telemetry, events, data products, parameters)
• Sequencing - Command sequencing functionality
• Advanced Sequencing - System-level behaviors as WebAssembly sequences
• Telemetry - Channel-based (TlmChan) | Packetized (TlmPacketizer)
• Event Management - Event collection, distribution, text logging, and fatal handling
• Rate Group Scheduling - Periodic execution of components at configurable rates
• Health Monitoring - Component liveness verification and watchdog stroking
• File Management - File transfer (F Prime file protocol or CFDP), file operations, and file dispatch
• Communication Stack - Data path between flight software and external systems
• CCSDS Protocol - CCSDS-standard space communication protocols
• Data Products - Structured data collection, storage, and priority-driven downlink
• Buffer Management - Memory allocation and buffer lifecycle services
• Parameter Management - Persistent configuration value storage and retrieval
• Time Services - System time sources and cycle generation
• System Services - Resource monitoring, version reporting, assertion handling, and polymorphic database
• Hardware Drivers - Byte stream, network, serial, GPIO, I2C, and SPI driver abstractions

Subtopologies

• CDH Core - Reusable bundle of command dispatch, event management, health, version, and text logging
• ComFprime - F Prime protocol communication stack subtopology
• ComCcsds - CCSDS protocol communication stack subtopology
• ComLoggerTee - Communication data splitter and logger subtopology
• Data Products - Data product lifecycle management subtopology
• File Handling - File transfer, file management, and parameter storage subtopology