pinephone_modem_sdk
FStar
pinephone_modem_sdk | FStar | |
---|---|---|
62 | 42 | |
585 | 2,567 | |
0.5% | 0.5% | |
2.9 | 9.9 | |
about 1 month ago | 5 days ago | |
Python | F* | |
GNU General Public License v3.0 only | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
pinephone_modem_sdk
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Hardening Cellular Basebands in Android
Hey, that looks really cool. I've been wanting to mess around with this stuff on PinePhone, which is in a unique position here since there are third-party images for the baseband which are mostly open source[1].
I've been especially interested in trying to reverse engineer what's going on with Google Fi on Android, but it is definitely a bit over my head, given that until recently I didn't even really know what an AT command was :) I'm guessing since it's Google the carrier stuff is mostly for fallback and all of the actually interesting stuff is done using protobufs over a data connection. (Fi is also interesting because you can make phone calls on the web over WebRTC. I wonder if that's some kind of gateway to SIP, or what.)
[1]: https://github.com/the-modem-distro/pinephone_modem_sdk
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Chinese Cellular IoT Radio Modules Pose an Alarming US National Security Risk
Ironically modules made by Quectel are GPL compliant (https://www.quectel.com/quectel-open-source) and you can build custom firmwares for them (https://github.com/the-modem-distro/pinephone_modem_sdk) to strip out any OTA logic.
Fibocom, on the other hand, not so much.
- PinePhone Modem SDK
- The PinePhone modem SDK: a free-software baseband firmware
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This happens more than I'd like to admit.
I have a PinePhone Pro, and I'm trying to figure out a reasonable way to get more than one half of ten minutes of battery life out of it, while still receiving notifications. I figure the best route to go will be to create a service that holds ports open, while the CPU is completely asleep, and either run it on the modem's processor or, as an possibility for the PinePhone Pro, but not the original Pinephone, run it on the m0 core used for power management.
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Pinephone, Pinephone Pro SW Maturity?
At this moment, Mobian on the PPP with the Modem SDK ( https://github.com/the-modem-distro/pinephone_modem_sdk/releases ) and a few tweaks to the sound, the phone is great, the power is managed well, and the camera is usable. So I vote for Mobian Phosh as the current best. None of the OSs available are entirely stable on updates, so you still need to be careful.
- OURphone Is a Fully Open-Source Smartphone Based on Linux
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LTE-Module for Pinebook Pro: Recommendations?
I use this one with my Steam Deck. It uses the quectel eg25, same as pinephone, and can can be used with the fancy custom firmware.
FStar
- Lean4 helped Terence Tao discover a small bug in his recent paper
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The Deep Link Equating Math Proofs and Computer Programs
I don't think something that specific exists. There are a very large number of formal methods tools, each with different specialties / domains.
For verification with proof assistants, [Software Foundations](https://softwarefoundations.cis.upenn.edu/) and [Concrete Semantics](http://concrete-semantics.org/) are both solid.
For verification via model checking, you can check out [Learn TLA+](https://learntla.com/), and the more theoretical [Specifying Systems](https://lamport.azurewebsites.net/tla/book-02-08-08.pdf).
For more theory, check out [Formal Reasoning About Programs](http://adam.chlipala.net/frap/).
And for general projects look at [F*](https://www.fstar-lang.org/) and [Dafny](https://dafny.org/).
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If You've Got Enough Money, It's All 'Lawful'
Don't get me wrong, there are times when Microsoft got it right the first time that was technically far superior to their competitors. Windows IOCP was theoretically capable of doing C10K as far back in 1994-95 when there wasn't any hardware support yet and UNIX world was bickering over how to do asynchronous I/O. Years later POSIX came up with select which was a shoddy little shit in comparison. Linux caved in finally only as recently as 2019 and implemented io_uring. Microsoft research has contributed some very interesting things to computer science like Z3 SAT solver and in collaboration with INRIA made languages like F* and Low* for formal specification and verification. But all this dwarfs in comparison to all the harm they did.
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What are the current hot topics in type theory and static analysis?
Most of the proof assistants out there: Lean, Coq, Dafny, Isabelle, F*, Idris 2, and Agda. And the main concepts are dependent types, Homotopy Type Theory AKA HoTT, and Category Theory. Warning: HoTT and Category Theory are really dense, you're going to really need to research them.
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Why is there no simple C-like functional programming language?
F* is a dependently typed language that can be transpiled to idiomatic C via the KReMLin compiler. It’s very ML-ish to write and you can leave out some proofs. It also has the benefit of being used to write a formally verified TLS implementation that’s in wide use throughout industry.
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[Media] Genetic algorithm simulation - Smart rockets (code link in comments)
As I said, dependent types attempt to solve this problem. F* is a language where you can express complex logic as a type. The catch is, these types are checked by an SMT solver. If the solver can satisfy the type checking, then great, and you move on. If it can’t, you have no idea why, and either have to guess or manually write the proof anyway. Contrast this with Standard ML which has a proof of the soundness of its type system.
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Prop v0.42 released! Don't panic! The answer is... support for dependent types :)
So kind of like F*? https://www.fstar-lang.org/
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old languages compilers
F*
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Pegasus spyware was used to hack reporters’ phones. I’m suing its creators; When you’re infected by Pegasus, spies effectively hold a clone of your phone – we’re fighting back.
Nevermind that academia has come up with far safer ways to do a few things but social norms & inertia prevent their wider adoption (well okay, it also has a barrier to entry in the education required to use it but I don't think someone with the knowledge to meaningfully contribute to an OS kernel can be considered uneducated nor unable to learn).
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[Hobby] Amateur Generalist Programmer Seeking to Put Bugfixing Skills to Good Use
Maybe that's a little off topic here, but if you like fixing bugs, i suspect you might also enjoy showing that there are no bugs at all. Check out languages like F* https://www.fstar-lang.org/ It's a proof-oriented programming language. You can use it to write code that has no bugs at all. And you once you're done, can convert F* to C or other languages.
What are some alternatives?
waydroid - Waydroid uses a container-based approach to boot a full Android system on a regular GNU/Linux system like Ubuntu.
coq - Coq is a formal proof management system. It provides a formal language to write mathematical definitions, executable algorithms and theorems together with an environment for semi-interactive development of machine-checked proofs.
droidian - Droidian's wiki
lean - Lean Theorem Prover
hackrf - low cost software radio platform
dafny - Dafny is a verification-aware programming language
hologram-python - Hologram device-side Python SDK - Send messages to the cloud in just 3 lines of code!
koka - Koka language compiler and interpreter
nova-hardware - Hologram Nova Hardware
VisualFSharp - The F# compiler, F# core library, F# language service, and F# tooling integration for Visual Studio
construct - This is The Construct
stepmania - Advanced rhythm game for Windows, Linux and OS X. Designed for both home and arcade use.