rjehangir

iperf3 Usage for Bandwidth Testing

We use this command to test bandwidth and packet loss versus tether length with the Fathom-X tether interface boards.

Server (i.e. Raspberry Pi)

The IP address in this command should be the IP address of the server.

TuxSH

#include <QWidget>
#include <QApplication>
#include <QDebug>
#include <QGamepadManager>
#include <QGamepad>
#include <QtEndian>
#include <QUdpSocket>
#include <QTimer>

typedef uint32_t u32;

rroohhh

gst-launch-1.0 -v udpsrc uri=udp://239.1.1.1:5000 caps="application/x-rtp, media=(string)video, clock-rate=(int)90000,encoding-name=(string)H264,packetization-mode=(string)1,profile-level-id=(string)640028,payload=(int)96, a-framerate=(string)25" ! rtph264depay ! h264parse ! vaapidecode ! fpsdisplaysink video-sink=xvimagesink

DavidWells

Aligning images

This is a guide for aligning images.

See the full Advanced Markdown doc for more tips and tricks

left alignment

nebgnahz

Most GStreamer examples found online are either for Linux or for gstreamer 0.10.

This particular release note seems to have covered important changes, such as:

• ffmpegcolorspace => videoconvert
• ffmpeg => libav

Applying -v will print out useful information. And most importantly the negotiation results.

mitchcurtis

cmake_minimum_required(VERSION 3.16)

project(model VERSION 0.1 LANGUAGES CXX)

set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(Qt6 6.5 REQUIRED COMPONENTS Quick)

qt_standard_project_setup(REQUIRES 6.5)

yeokm1

The new Raspberry Pi 3 released on 29 Feb 2016 has issues with its UART port as the pinout GPIO 14/15 on the pin header is now based on a low throughput mini-UART.

To understand the issue better than reading the wall of text below, you can see the talk I gave on this issue.

The actual hardware UART on the BCM2837 SoC has now been assigned to handle Bluetooth with the BCM43438 Wifi/Bluetooth chip. More details can be found here and here.

This mini-UART does not produce a stable baud rate as it fluctuates based on the Core clock speed whenever it rises or falls. The result is that the serial debug output is practically unusable. On Raspbian you may see garbage or nothing at all. The solution is simple, add core_freq=250 to /boot/config.txt to cap the core frequency to a constant value. This optio

vidavidorra

Auto-deploying Doxygen documentation to gh-pages with Travis CI

This explains how to setup for GitHub projects which automatically generates Doxygen code documentation and publishes the documentation to the gh-pages branch using Travis CI. This way only the source files need to be pushed to GitHub and the gh-pages branch is automatically updated with the generated Doxygen documentation.

Sign up for Travis CI and add your project

Get an account at Travis CI. Turn on Travis for your repository in question, using the Travis control panel.

Create a clean gh-pages branch

To create a clean gh-pages branch, with no commit history, from the master branch enter the code below in the Git Shell. This will create a gh-pages branch with one file, the README.md in it. It doesn't really matter what file is uploaded in it since it will be overwritten when the automatically generated documentation is published to th

ertseyhan

#!/bin/bash

sudo mount -o remount,size=10G,noatime /tmp
echo "Done. Please use 'df -h' to make sure folder size is increased."

vr2262

1. Download this script and make it executable: https://gist.github.com/meatballhat/12997137db1a9394f39c

2. Invoke the script like so:

   $ ./run-travis-docker-image image_name
   

where image_name is one of the travis_<name> images here: https://quay.io/organization/travisci

e.g. ./run-travis-docker-image python