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@danielkucera
danielkucera / compal-decrypt.c
Last active July 3, 2023 23:02
compal-decrypt.c
/*
Program for decrypting Compal CH7465LG private key
Compilation:
gcc -o compal-decrypt compal-decrypt.c -lcrypto
Running:
./compal-decrypt
usage: ./compal-decrypt <infile> <outfile>
@chrisdone
chrisdone / gist:02e165a0004be33734ac2334f215380e
Last active April 21, 2024 12:50
Build and run minimal Linux / Busybox systems in Qemu

Common

export OPT=/opt
export BUILDS=/some/where/mini_linux
mkdir -p $BUILDS

Linux kernel

@Miouyouyou
Miouyouyou / Linux_DRM_OpenGLES.c
Last active April 18, 2024 07:34
An example, inspired by Rob Clark "kmscube.c" that uses Linux Direct Rendering Manager ( DRM ) and EGL to create an OpenGL ES 2 context. This is a standalone example, that just clears the screen with a blueish color. Usable with Rockchip DRM drivers and Mali Wayland/DRM userspace drivers.
// gcc -o drmgl Linux_DRM_OpenGLES.c `pkg-config --cflags --libs libdrm` -lgbm -lEGL -lGLESv2
/*
* Copyright (c) 2012 Arvin Schnell <arvin.schnell@gmail.com>
* Copyright (c) 2012 Rob Clark <rob@ti.com>
* Copyright (c) 2017 Miouyouyou <Myy> <myy@miouyouyou.fr>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
@gbaman
gbaman / HowToOTG.md
Last active May 2, 2024 01:27
Simple guide for setting up OTG modes on the Raspberry Pi Zero

Raspberry Pi Zero OTG Mode

Simple guide for setting up OTG modes on the Raspberry Pi Zero - By Andrew Mulholland (gbaman).

The Raspberry Pi Zero (and model A and A+) support USB On The Go, given the processor is connected directly to the USB port, unlike on the B, B+ or Pi 2 B, which goes via a USB hub.
Because of this, if setup to, the Pi can act as a USB slave instead, providing virtual serial (a terminal), virtual ethernet, virtual mass storage device (pendrive) or even other virtual devices like HID, MIDI, or act as a virtual webcam!
It is important to note that, although the model A and A+ can support being a USB slave, they are missing the ID pin (is tied to ground internally) so are unable to dynamically switch between USB master/slave mode. As such, they default to USB master mode. There is no easy way to change this right now.
It is also important to note, that a USB to UART serial adapter is not needed for any of these guides, as may be documented elsewhere across the int

@mik30s
mik30s / webcam_capture.cpp
Last active October 16, 2023 05:06
Simple C++ program to capture a webcam frame in Linux
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <linux/ioctl.h>
#include <linux/types.h>
#include <linux/v4l2-common.h>
#include <linux/v4l2-controls.h>
#include <linux/videodev2.h>
#include <fcntl.h>
#include <unistd.h>
@patriciogonzalezvivo
patriciogonzalezvivo / GLSL-Lights.md
Last active November 16, 2022 01:46
GLSL Shaders Lights Funtions
@XVilka
XVilka / TrueColour.md
Last active April 8, 2024 14:02
True Colour (16 million colours) support in various terminal applications and terminals

THIS GIST WAS MOVED TO TERMSTANDARD/COLORS REPOSITORY.

PLEASE ASK YOUR QUESTIONS OR ADD ANY SUGGESTIONS AS A REPOSITORY ISSUES OR PULL REQUESTS INSTEAD!

@moteus
moteus / install_lua.txt
Last active November 2, 2021 00:15
Lua/Luarocks Install instruction on Windows
-- make and install lua --
1. Download install http://mingw-w64.sourceforge.net/download.php
2. Download and unpack Lua source (http://www.lua.org/ftp)
Tested on Lua 5.1.5 and 5.2.2
3. Make Lua
- run mingw builds terminal
- cd to lua src dir
- run mingw32-make mingw
@nowl
nowl / perlin.c
Created February 15, 2011 19:04
Perlin Noise in C
#include <stdio.h>
static int SEED = 0;
static int hash[] = {208,34,231,213,32,248,233,56,161,78,24,140,71,48,140,254,245,255,247,247,40,
185,248,251,245,28,124,204,204,76,36,1,107,28,234,163,202,224,245,128,167,204,
9,92,217,54,239,174,173,102,193,189,190,121,100,108,167,44,43,77,180,204,8,81,
70,223,11,38,24,254,210,210,177,32,81,195,243,125,8,169,112,32,97,53,195,13,
203,9,47,104,125,117,114,124,165,203,181,235,193,206,70,180,174,0,167,181,41,
164,30,116,127,198,245,146,87,224,149,206,57,4,192,210,65,210,129,240,178,105,