Flight Software Documentation

Figure 1: OBC Application Diagram

ADCS Manager Application - Manages the Attitude Determination and Control System module
Bus Communications Application - Primary interface to the CAN bus, handles message queuing and prioritization
Deployment Application - Sequences deployable actions and manages detumbling procedures
GPS Position Manager Application - Interfaces with GNSS receiver for position tracking
Payload Manager Application - Tracks Payload Controller state and relays PAT sequence events
Power Manager Application - Monitors PDU and manages power distribution and thermal control
Radio Manager Application - Manages radio state and handles downlink packet transmission
Watchdog Monitor Application - Manages watchdog timers and ensures system operational status

Figure 2: Payload Controller Application Diagram

Data-Collection Application - Logs payload data for post-pass analysis and downlink
FPGA Manager Application - Handles laser-modulation FPGA I/O and telemetry
FSM Manager Application - Manages Fast-Steering Mirror calibration and control
Laser Manager Application - Tracks state and drives beacon and transmission lasers
PAT Application - Orchestrates the Pointing, Acquisition, and Tracking sequence
Quadrant-Photodiode Manager Application - Processes QPD signals for positioning data

Checksum Application - Ensures onboard memory integrity through CRC calculations
CFDP Application - Provides CCSDS File Delivery Protocol services
Data Store Application - Stores software bus messages in files
File Manager Application - Provides onboard file system management services
Health and Safety Application - Monitors application health and provides watchdog services
Housekeeping Application - Builds and sends combined telemetry messages
Limit Checker Application - Monitors telemetry data against threshold limits
Memory Dwell Application - Monitors memory addresses accessed by CPU
Memory Manager Application - Provides memory loading and dumping capabilities
SBN Application - Connects cFE Software Bus to other buses
Stored Commands Application - Manages autonomous command sequences