nasa/fprime

F´ - A flight software and embedded systems framework

Stars: 11.8k
Forks: 1.8k
Open beginner issues: 4
Indexed issues: 449
Avg merge: 2d 15h
Merged PRs (30d): 68

Dominant language: C++
License: Apache-2.0
Last GitHub push: Sep 17, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

Beginner friendly Everything

Open All

449 open issues indexed

Support persistent file paths for framework services for `Os::Baremetal::MicroFs` Open

bug

Difficulty 5/5 Over a week Newbie friendliness 38/100

nasa/fprime#5998 · Opened Sep 17, 2026
Opcode obfuscation Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

nasa/fprime#5997 · Opened Sep 17, 2026
Modify DpDemo to use 0 for default priority Open

C++

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

nasa/fprime#5995 · Opened Sep 17, 2026
Remove references from UT paramSet functions Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

nasa/fprime#5988 · 1 comment · Opened Sep 16, 2026
Svc::RateGroupDriver: rollover product overflows with many rate groups, LCM would not Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

nasa/fprime#5987 · Opened Sep 16, 2026
Add Standard Sync Marker to CCSDS Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

nasa/fprime#5985 · Opened Sep 15, 2026
Supply initial packet schedule for TlmPacketizer Open

C++

Difficulty 3/5 1-2 days Newbie friendliness 48/100

nasa/fprime#5984 · Opened Sep 15, 2026
Fw::StringUtils add `operator==` Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

nasa/fprime#5978 · Opened Sep 15, 2026
F Prime XTCE: Support annotating FPP types to not be processed by ground system Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

nasa/fprime#5973 · Opened Sep 15, 2026
register_fprime_config: STATIC enforcement checks `SOURCE` instead of `SOURCES` Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

nasa/fprime#5970 · 1 comment · Opened Sep 14, 2026
Bump FPP to FPP Hot-Fix Release v3.3.1 or v3.4.0 Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

nasa/fprime#5969 · Opened Sep 14, 2026
Add Ranged Types to fprime-yamcs Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nasa/fprime#5967 · Opened Sep 14, 2026
Range types in Dictionary Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

nasa/fprime#5966 · Opened Sep 14, 2026
Command/Parameter Range Validation Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

nasa/fprime#5965 · 1 comment · Opened Sep 14, 2026
Improve Testing and Quality of IPC Multi-Queues Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

nasa/fprime#5964 · Opened Sep 14, 2026
Drv/Ip: IpSocket::send() treats a send timeout (EAGAIN) as fatal SOCK_SEND_ERROR Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

nasa/fprime#5960 · Opened Sep 13, 2026
Update Os::Mutex to use alias pattern Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

nasa/fprime#5945 · Opened Sep 11, 2026
F-Prime GDS Darkmode Open

nasa/fprime#5944 · 1 comment · 1 reaction · 1 assignee · Opened Sep 11, 2026
Remove downlink extra copies by pre-allocating full size buffer Open

C++

Difficulty 5/5 Over a week Newbie friendliness 35/100

nasa/fprime#5940 · Opened Sep 11, 2026
GDS ChronologicalHistory insert is O(N) per item → O(N²) history growth, causing the GDS receiver thread to fall behind Open

bug F´ GDS

Difficulty 3/5 1-2 days Newbie friendliness 68/100

nasa/fprime#5938 · Opened Sep 10, 2026
SDLS AES-GCM: follow-up review findings from #5795 Open

bug C++

nasa/fprime#5931 · 1 comment · 1 assignee · Opened Sep 10, 2026
Allow per-instance config of Svc.ComAggregator Open

C++

nasa/fprime#5928 · 1 assignee · Opened Sep 10, 2026
Backfill ShellCommand into core fprime Open

C++

nasa/fprime#5927 · 1 assignee · Opened Sep 10, 2026
Svc SDD staleness: RateGroupDriver divider contract, ComCcsds scheduling ports, RateGroupDriver UT dead code Open

bug Documentation

nasa/fprime#5922 · 1 assignee · Opened Sep 10, 2026
default/config: five configuration annotations describe the wrong knob (AcConstants, EventManagerCfg, FpConfig, FpConstants, IpCfg) Open

bug Documentation FPP

nasa/fprime#5921 · 1 assignee · Opened Sep 10, 2026
Svc/WasmSequencer: SequenceHostFailure format string swaps reason/hostFunction; UT comments name nonexistent events; ModuleStartInvokeFailed payload never asserted Open

bug FPP Refactoring / Code Clarity

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

nasa/fprime#5920 · Opened Sep 10, 2026
Svc/Version tests and comments: tautological integration assertion, misleading comments, dead code Open

bug python Refactoring / Code Clarity

nasa/fprime#5919 · 1 assignee · Opened Sep 10, 2026
Svc/PrmDb docs and tests: SDD omits CRC/state machine; tautological state test; swapped comments; debug scaffolding Open

bug C++ Documentation

nasa/fprime#5918 · 1 assignee · Opened Sep 10, 2026
Svc/FpySequencer docs: directives.md error conditions and sdd.md do not match the implementation Open

bug Documentation Fpy

Difficulty 3/5 1-2 days Newbie friendliness 72/100

nasa/fprime#5917 · Opened Sep 10, 2026
Svc/FpySequencer UT: 19 ground-facing events never asserted; ~30 tests assert event counts only Open

bug C++ Fpy

Difficulty 3/5 1-2 days Newbie friendliness 68/100

nasa/fprime#5915 · Opened Sep 10, 2026
Svc UT coverage gaps: ground-facing events/commands/telemetry never asserted (BufferAccumulator, BufferLogger, BufferManager, CmdDispatcher, Ccsds framers/deframers, DpCompressProc) Open

bug C++

nasa/fprime#5914 · 1 assignee · Opened Sep 10, 2026
Os UT: FileRules shadow_read(0) passes a null buffer; countingsemaphore tests assert a nonexistent maxCount; directory comments wrong Open

bug C++

nasa/fprime#5913 · 1 assignee · Opened Sep 10, 2026
Svc/CmdSplitter UT: inclusive lowerUpper bound picks an out-of-range CmdBuff port (random abort) Open

bug C++ CI

nasa/fprime#5912 · 2 comments · 1 assignee · Opened Sep 10, 2026
Svc/Ccsds/CfdpManager: helper tests are tautological / parameter untested Open

bug C++ CFDP

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

nasa/fprime#5910 · Opened Sep 10, 2026
ci/config-profiles.json: -DFW_* generate-args are not compile definitions, so config profiles build the default configuration Open

bug CI cmake

Difficulty 4/5 3-5 days Newbie friendliness 52/100

nasa/fprime#5908 · Opened Sep 10, 2026
Svc/WasmSequencer: sync CANCEL races store reset (m_wasm assert), port-driven RUN failures never emit seqDoneOut, guest ABI CLEARED=5 Open

bug C++

Difficulty 5/5 Over a week Newbie friendliness 25/100

nasa/fprime#5906 · Opened Sep 10, 2026
Svc/PassiveRateGroup: cycleTime used uninitialized when RawTime::getDiffUsec fails Open

bug C++

nasa/fprime#5904 · 1 comment · 1 assignee · Opened Sep 10, 2026
Svc/FpySequencer: PUSH_RAND seeds via std::seed_seq (heap allocation on the flight path); unreachable return Open

bug C++ Fpy

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

nasa/fprime#5903 · Opened Sep 10, 2026
Svc/CmdSequencer: Sequence::allocateBuffer passes possibly-shrunk allocation size with unspecified evaluation order Open

bug C++

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

nasa/fprime#5900 · Opened Sep 10, 2026
Svc/CmdSequencer: fault-handling gaps (unguarded seqDone_out, stale cmdResponse accepted, INCOMPARABLE time treated as expired, CS_STEP overwrites pending record) Open

bug C++

Difficulty 4/5 3-5 days Newbie friendliness 48/100

nasa/fprime#5899 · Opened Sep 10, 2026
Svc/Ccsds/CfdpManager: queue telemetry underflow, move_dir passed as a file path, RX failures never delete the partial file Open

bug C++ CFDP

Difficulty 4/5 3-5 days Newbie friendliness 48/100

nasa/fprime#5898 · Opened Sep 10, 2026
Svc/Ccsds/CfdpManager: PDU header/NAK decoding accepts widths and flags the implementation does not support Open

bug C++ CFDP

Difficulty 4/5 3-5 days Newbie friendliness 48/100

nasa/fprime#5897 · Opened Sep 10, 2026
Svc/Ccsds/CcsdsSdlsFramer: EncryptionFailed / BufferAllocationFailed events are unthrottled Open

bug FPP

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

nasa/fprime#5896 · Opened Sep 10, 2026
Svc/CmdSequencer: 40-byte Fw::CmdStringArg truncates sequence and CRC file paths advertised as FileNameStringSize Open

bug C++

Difficulty 4/5 3-5 days Newbie friendliness 55/100

nasa/fprime#5892 · Opened Sep 10, 2026
Svc/CmdSequencer: uplinked sequence content reaches FW_ASSERT (time-tag microseconds, AMPCS zero-record file) Open

bug C++

Difficulty 4/5 3-5 days Newbie friendliness 68/100

nasa/fprime#5891 · Opened Sep 10, 2026
Svc/Ccsds/CfdpManager: ground-configurable inputs reach FW_ASSERT (playback path length, zero timer duration) Open

bug C++ CFDP

Difficulty 4/5 3-5 days Newbie friendliness 48/100

nasa/fprime#5890 · Opened Sep 10, 2026
Svc/Ccsds/AosFramer: tail-packing after dataReturnIn emits a second SUCCESS for one frame (ComQueue protocol violation) Open

bug C++

Difficulty 3/5 1-2 days Newbie friendliness 76/100

nasa/fprime#5888 · Opened Sep 10, 2026
Svc/Ccsds/AosDeframer: EPP Packet Length is treated as payload length instead of total packet length Open

bug C++

Difficulty 3/5 1-2 days Newbie friendliness 76/100

nasa/fprime#5887 · Opened Sep 10, 2026
Svc/Ccsds/AosFramer,AosDeframer: M_PDU First Header Pointer special values are not CCSDS 732.0-B conformant Open

bug C++ FPP

Difficulty 3/5 1-2 days Newbie friendliness 76/100

nasa/fprime#5886 · Opened Sep 10, 2026
Svc/Ccsds/AosFramer: EPP idle-fill branch swallows the condition and leaves frames unpadded Open

bug C++

Difficulty 3/5 1-2 days Newbie friendliness 72/100

nasa/fprime#5881 · Opened Sep 10, 2026

A short digest of beginner-friendly GitHub issues.