MicroPython
Unicorn Engine
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MicroPython | Unicorn Engine | |
---|---|---|
197 | 14 | |
18,317 | 7,126 | |
1.5% | 1.7% | |
9.8 | 1.3 | |
5 days ago | 11 days ago | |
C | C | |
MIT | GNU General Public License v3.0 only |
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.
MicroPython
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RustPython
Just putting my hand up to say that MicroPython is awesome (and runs on the RP2040). https://micropython.org
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Lilygo T-Deck: 2.8-inch IPS LCD display, mini keyboard, and ESP32 processor
Gah, I just ordered one on impulse [1]. I've wanted to build out a WiFi PDA for quite some time now and I like this hardware.
I'm quite liking the idea of running tulip MicroPython [2] on it, or going back to pure MicroPython [3] and writing some drivers. Apparently something like ampy can be used to upload/download Python files [4].
Threads could be quite exciting for running multiple programs at once [5], although I have no idea what it means for two programs to fight over GPIO! It does seem as though MicroPython can only utilise a single core [6].
[1] https://www.lilygo.cc/products/t-deck?variant=43087936487605
[2] https://github.com/bwhitman/tulipcc/tree/main/tulip/tdeck
[3] https://docs.micropython.org/en/latest/esp32/tutorial/intro....
[4] https://www.digikey.co.uk/en/maker/projects/micropython-basi...
[5] https://docs.micropython.org/en/latest/library/_thread.html
[6] https://github.com/micropython/micropython/issues/8197
- MicroPython v1.22.0
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MicroPython VS PikaPython - a user suggested alternative
2 projects | 25 Dec 2023
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about microprocessor
If you really want to engage in the travesty that is shoehorning a high level scripting language into an environment that has 512 bytes of RAM and less clock cycles than an electric toothbrush, there is micropython.
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CAN Bus with MicroPython
There is some work to implement a common CAN interface in micropython but it's some way off yet: https://github.com/micropython/micropython/pull/13149
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Show HN: MicroLua – Lua for the RP2040 Microcontroller
https://github.com/raspberrypi/pico-sdk/ links to a PDF about connecting to the interwebs with a pi pico.
micropython/micropython//ports/rp2/boards/RPI_PICO_W: https://github.com/micropython/micropython/tree/master/ports...
raspberrypi/pico-sdk /lib: btstack, cyw43-driver, lwip, mbedtls, tinyusb https://github.com/raspberrypi/pico-sdk/tree/master/lib
raspberrypi/pico-examples//pico_w/wifi/access_point/picow_access_point.c:
https://github.com/raspberrypi/pico-examples/blob/master/pic...
There's an iperf opkg pkg, or is it just netperf (which works with fluent)?
raspberrypi/pico-examples//pico_w/wifi/iperf/picow_iperf.c:
- WebUSB Support for RP2040
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Ask HN: Embedded Scripting Options for Microcontrollers
Needed for hobby project, maintained by very small team. Haven't decided on specific microcontroller. Needed for general bit-banging, speed and code size are not priorities.
So far have considered MicroPython [0] [1] and Lua [2] [3], but open for suggestions for others.
What are experiences?
[0] https://micropython.org/
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Arduino or python
Python is also a general-purpose programming language. It's typically used on desktop / laptop computers. But Micropython is a variant that can be used to program embedded devices.
Unicorn Engine
- Unicorn: Lightweight multi-platform, multi-architecture CPU emulator framework
- 86Box v4.0
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Show HN: Tetris, but the blocks are ARM instructions that execute in the browser
OFRAK Tetris is a project I started at work about two weeks ago. It's a web-based game that works on desktop and mobile. I made it for my company to bring to events like DEF CON, and to promote our binary analysis and patching framework called OFRAK.
In the game, 32-bit, little-endian ARM assembly instructions fall, and you can modify the operands before executing them on a CPU emulator. There are two segments mapped – one for instructions, and one for data (though both have read, write, and execute permissions). Your score is a four byte signed integer stored at the virtual address pointed to by the R12 register, and the goal is to use the instructions that fall to make the score value in memory as high as possible. When it's game over, you can download your game as an ELF to relive the glory in GDB on your favorite ARM device.
The CPU emulator is a version of Unicorn (https://www.unicorn-engine.org/) that has been cross-compiled to WebAssembly (https://alexaltea.github.io/unicorn.js/), so everything on the page runs in the browser without the need for any complicated infrastructure on the back end.
Since I've only been working on this for a short period of time leading up to its debut at DEF CON, there are still many more features I'd eventually like to implement. These include adding support for other ISAs besides ARM, adding an instruction reference manual, and lots of little cleanups, bug fixes, and adjustments.
My highest score is 509,644,979, but my average is about 131,378.
I look forward to feedback, bug reports, feature requests, and strategy discussions!
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It Takes 6 Days to Change 1 Line of Code
Entails hundreds of hours of single-stepping through that opcode in Linux kernel using an indirect operand pointing toward its own opcode (self-modifying code).
Even the extraordinaire Fabrice Bellard (author of QEMU) admitted that it is broke and did a total rewrite, which fixed tons of other issues.
https://github.com/unicorn-engine/unicorn/issues/364
- FOSS Simulator for debugging C code (even better if it supports some MCUs)
- Unicorn: Lightweight multi-platform, multi-architecture CPU emulation framework
- Unicorn - CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc, PowerPC, RiscV, S390x, TriCore, X86)
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Vita3K android running Tales of Hearts R - A Glimpse of What's to come
Macdu (Vita3K dev) also stated that this game is CPU bound so they used a CPU emulator known as unicorn2 , this is also the reason for the slow speed
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QEMU Version 7.0.0 Released
This is how I found out a snippet of assembly code that can actually distinguished between a KVM hypervisor and most of today’s emulator.
https://github.com/unicorn-engine/unicorn/issues/364
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Top Python Tools for Malware Analysis. – PythonStacks
Unicorn is missing from that list.
The python CPU emulator with full program counter (PC) and general (and other CPU-specific) register set controls.
I use it to catch fileless malware in the second fastest dynamic manner. Also good for detecting Rowhammer/SPECTRE behaviors.
Disclaimer: one of the contributors and a contractor that frequently deploy this.
https://github.com/unicorn-engine/unicorn
What are some alternatives?
circuitpython - CircuitPython - a Python implementation for teaching coding with microcontrollers
QEMU - Official QEMU mirror. Please see https://www.qemu.org/contribute/ for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website.
TinyGo - Go compiler for small places. Microcontrollers, WebAssembly (WASM/WASI), and command-line tools. Based on LLVM.
capstone - Capstone disassembly/disassembler framework: Core (Arm, Arm64, BPF, EVM, M68K, M680X, MOS65xx, Mips, PPC, RISCV, Sparc, SystemZ, TMS320C64x, Web Assembly, X86, X86_64, XCore) + bindings. [Moved to: https://github.com/capstone-engine/capstone]
PlatformIO - Your Gateway to Embedded Software Development Excellence :alien:
Reverse-Engineering-Tutorial - A FREE comprehensive reverse engineering tutorial covering x86, x64, 32-bit ARM & 64-bit ARM architectures.
esp-idf - Espressif IoT Development Framework. Official development framework for Espressif SoCs.
TinyVM - TinyVM is a small, fast, lightweight virtual machine written in pure ANSI C.
Espruino - The Espruino JavaScript interpreter - Official Repo
box86 - Box86 - Linux Userspace x86 Emulator with a twist, targeted at ARM Linux devices
jerryscript - Ultra-lightweight JavaScript engine for the Internet of Things.
qemu-t8030 - iPhone 11 emulated on QEMU