nasa/fpp

View on GitHub

F Prime Prime: A modeling language for F Prime

Stars: 118
Forks: 67
Open beginner issues: 0
Indexed issues: 92
Avg merge: 6d 12h
Merged PRs (30d): 7

Dominant language: Scala
License: Apache-2.0
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

92 open issues indexed

fpp-to-cpp drops rational format fields on aliases of F32 and F64 Open

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

nasa/fpp#1116 · Opened Sep 18, 2026
Implement checking for template definitions Open

semantics

nasa/fpp#1115 · 1 assignee · Opened Sep 17, 2026
fpp-to-cpp: generated serializeRecord_* for array records asserts instead of returning a status when size exceeds FwSizeStoreType Open

code generation needs ccb input

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

nasa/fpp#1113 · 1 comment · Opened Sep 17, 2026
Remove fpp-to-json Open

tools

nasa/fpp#1112 · 2 assignees · Opened Sep 16, 2026
Recursive `PRM_SET` generation for complex types Open

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

nasa/fpp#1108 · Opened Sep 13, 2026
Templates F Prime Integration Open

f prime integration

nasa/fpp#1104 · 1 assignee · Opened Sep 9, 2026
Invalid autocode for `.init` of components with `async`+`serial` port Open

code generation

nasa/fpp#1093 · 10 comments · 1 assignee · Opened Aug 26, 2026
Support writing expanded form of template in source language Open

spec syntax

nasa/fpp#1090 · 1 assignee · Opened Aug 24, 2026
Vector Type Users Guide Open

user's guide

nasa/fpp#1084 · 1 assignee · Opened Aug 24, 2026
Vector Type Codegen Open

code generation

nasa/fpp#1083 · 1 assignee · Opened Aug 24, 2026
Vector Type Semantics Open

semantics

nasa/fpp#1082 · 1 assignee · Opened Aug 24, 2026
Vector Type Syntax Open

syntax

nasa/fpp#1081 · 1 assignee · Opened Aug 24, 2026
Vector Type Spec Open

spec

nasa/fpp#1080 · 1 assignee · Opened Aug 24, 2026
Templates User's Guide Open

documentation

nasa/fpp#1079 · 1 assignee · Opened Aug 20, 2026
Move fpp-check tests into Scala tests Open

tools

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

nasa/fpp#1077 · Opened Aug 19, 2026
`parametersLoaded` should call `parameterUpdated` for all prms (in autocoded base case) Open

code generation

Difficulty 3/5 1-2 days Newbie friendliness 58/100

nasa/fpp#1098 · 2 comments · Opened Aug 15, 2026
Rename `fpp-format` to `fpp-to-fpp` Open

tools

nasa/fpp#1073 · 1 assignee · Opened Aug 14, 2026
Enumerated port numbering Open

code generation Consideration Item semantics

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

nasa/fpp#1070 · 1 comment · Opened Aug 13, 2026
Make type aliases to scalar types pass-by-value Open

code generation

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

nasa/fpp#1066 · Opened Aug 12, 2026
Check for unused signals, actions, and guards Open

semantics

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

nasa/fpp#1065 · 1 comment · Opened Aug 12, 2026
Specify dictionary constants per deployment Open

semantics

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

nasa/fpp#1067 · 2 comments · Opened Aug 11, 2026
Full modeling for FSW systems Open

code generation Consideration Item semantics spec syntax user's guide

nasa/fpp#1060 · 1 assignee · Opened Aug 10, 2026
Update fpp to pass Fw::Time objects by reference in tlmWrite functions Open

code generation

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

nasa/fpp#1074 · 1 comment · Opened Aug 6, 2026
Vector Types Open

Consideration Item

nasa/fpp#1057 · 1 comment · 1 assignee · Opened Aug 6, 2026
Add autocoder support for asynchronous command responses Open

code generation Consideration Item

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

nasa/fpp#1055 · Opened Aug 3, 2026
Run static analysis against the code generated by fpp-to-cpp Open

code generation Consideration Item inherited technical debt

nasa/fpp#1032 · 5 comments · 2 reactions · 1 assignee · Opened Jul 8, 2026
Default Values for Command Arguments Open

Consideration Item

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

nasa/fpp#1028 · 1 comment · Opened Jun 29, 2026
Add the capability to instantiate active components as queued components Open

code generation Consideration Item semantics spec syntax user's guide

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

nasa/fpp#1025 · Opened Jun 23, 2026
Enum variant types Open

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

nasa/fpp#1024 · 1 comment · Opened Jun 18, 2026
Override the queue type of a component Open

nasa/fpp#1023 · 1 comment · 1 assignee · Opened Jun 17, 2026
Make the enum variable `e` private in generated enum code Open

code generation

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

nasa/fpp#1021 · 4 comments · Opened Jun 12, 2026
Allow instantiation of internal state machines in passive components Open

code generation Consideration Item semantics

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

nasa/fpp#1008 · 1 reaction · Opened Jun 2, 2026
Improve handling of array initializers with mismatched sizes Open

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

nasa/fpp#1020 · 16 comments · Opened May 14, 2026
Add support for absolute qualified identifiers Open

semantics spec syntax user's guide

nasa/fpp#990 · 1 comment · 1 assignee · Opened Apr 20, 2026
Remove Time ports for telemetry Open

code generation

nasa/fpp#1015 · 6 comments · 2 assignees · Opened Apr 16, 2026
[FPP State Machines] Clarify the behavior of `getState` during state transitions Open

code generation semantics

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

nasa/fpp#986 · 3 comments · Opened Apr 9, 2026
Add types representing ranges of numbers Open

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

nasa/fpp#980 · 11 comments · 2 reactions · Opened Mar 30, 2026
Improve support for annotations Open

nasa/fpp#977 · 5 comments · 1 reaction · 1 assignee · Opened Mar 27, 2026
Improve operator << for unit test C++ code Open

code generation

nasa/fpp#969 · 1 assignee · Opened Mar 21, 2026
Change FPP generated struct to have a private struct as opposed to members Open

code generation

nasa/fpp#1100 · 1 assignee · Opened Mar 19, 2026
Improve docs deployment Open

CI

nasa/fpp#961 · 3 comments · 1 assignee · Opened Mar 17, 2026
Make port matching part of the port interface Open

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

nasa/fpp#953 · 2 reactions · Opened Mar 13, 2026
`constexpr` Structs, and Arrays Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

nasa/fpp#929 · 1 comment · Opened Feb 25, 2026
Make the generated C++ more robust to name collisions Open

code generation

nasa/fpp#915 · 4 comments · 1 assignee · Opened Feb 3, 2026
Revise rules for type conversion of struct values Open

semantics spec

nasa/fpp#914 · 1 comment · 1 assignee · Opened Jan 31, 2026
Support if-else in State Transition Specifier Open

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

nasa/fpp#911 · 4 comments · Opened Jan 29, 2026
Add lightweight integrity check when constructing a DP container Open

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

nasa/fpp#904 · Opened Jan 21, 2026
Add Fw::String(char*, length) Constructor Open

code generation

nasa/fpp#1101 · 3 comments · 1 assignee · Opened Dec 18, 2025
String concatenation and interpolation Open

code generation semantics spec

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

nasa/fpp#893 · 1 comment · Opened Dec 5, 2025
Allow access to enum NUM_CONSTANTS field in FPP Open

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

nasa/fpp#887 · 1 reaction · Opened Nov 20, 2025

nasa/fpp

Get new issues in your inbox