• Enabling ONOS Built-in Services

  05 May 2021   Tags: computernetwork    
  In this exercise, you will integrate ONOS built-in services for link and host discovery with your P4 program. Such built-in services are based on the ability of switches to send data plane packets to the controller (packet-in) and vice versa (packet-out). To make this work with your P4 program, ...   Read More
  
  

• Using ONOS as the Control Plane

  03 May 2021   Tags: computernetwork     security    
  This post brings more details about the execution of Using ONOS as the Control Plane Tutorial that is part of the Next Generation SDN Tutorial. And it will cover the following topics: Start ONOS along with a set of built-in apps for basic services such as topology discovery Load a custom ON...   Read More
  
  

• Yang, OpenConfig and gNMI

  16 April 2021   Tags: computernetwork    
  This post brings more details about the execution of Yang, OpenConfig, and gNMI Basics Tutorial that is part of the Next Generation SDN Tutorial. And it will cover the following topics: Understanding the YANG language Understand YANG encoding Understanding YANG-enabled transport protocols...   Read More
  
  

• KeePass Integration with AutoHotKey

  15 April 2021   Tags: security     taskautomation    
  If you have to handle several passwords through some pass phrase manager like KeePass, I hope this post can help you to do less efort to get your passwords and bring it in a safe/secure way. To do that I propose a solution using KeePass and AutoHotKey tools, that will automate part of this proces...   Read More
  
  

• Next Generation SDN - P4Runtime Basics

  30 March 2021   Tags: computernetwork     security    
  This post brings more details about the execution of P4Runtime Basics Tutorial that is part of the Next Generation SDN Tutorial. This post will cover the following topics: Look at the P4 starter code Compile it for the BMv2 software switch and understand the output (P4Info and BMv2 JSON fil...   Read More
  
  

• Buffer Overflow Through Vulnerable Program (Unix OS)

  23 March 2021   Tags: reverseengineering     security    
  The following program is an example of insecure implementation that enable the user to inject shell commands during its execution. It uses the system() function that executes commands into the host environment through the command processor and it returns after the command has been completed. Sys...   Read More
  
  

• Stack Overflow Explained

  11 January 2021   Tags: reverseengineering     security    
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• Beaglebone Black - Soldering Jtag Connector

  22 July 2020   Tags: hardware    
  The mostly goal in this article is to show how to soldering a JTAG connector in the Beaglebone Black (BBB) board, then in the next post I hope to show you how to connect it with J-Link Segger 8.08.90, at least if it works :). Otherwise, at least you can see here the pinout related to P2 connector...   Read More
  
  

• Building NuttX for Beaglebone Black (BBB)

  08 July 2020   Tags: embeddedsystems     digitalprocessing    
  To follow this tutorial (Linux), besides the Beaglebone Black (BBB), you will need a computer to build the NuttX OS, one microSD card, one serial-usb adapter and any serial software to interfaces with BBB. After complete the check list, is time to execute some commands. Setting up the Developme...   Read More
  
  

• Control Systems - The Step Response

  26 June 2020   Tags: control    
  In this post I want to cover some interesting things about step response and I hope to clarify via examples what the step response is and how it can be used to specify the design for closed-loop control systems, to do that I will use program laguage for Octave. So, to answer the question “What is...   Read More
  
  

• Heterogeneous Co-Simulation - Software and Hardware

  25 June 2020   Tags: embeddedsystems     digitalprocessing    
  The idea to write this post appeared some years ago when I was working as a FPGA Developer, I was amazed with the possibility to test my stuffs in a complete simulated environment, my goal here is make this tutorial simple and guided by practical exercise to clarify the co-simulation usage. When ...   Read More
  
  

• State Chart XML SCXML - Generating C Code Using XMLStarlet

  18 June 2020   Tags: embeddedsystems     softwaredevelopment    
  SCXML stands for State Chart XML: State Machine Notation for Control Abstraction. It is an XML-base markup language that provides a generic state-machine-based execution environment based on Harel statecharts.   Read More
  
  

• Two-Wheeler balancing robot

  15 June 2020   Tags: control    
  The 2-Wheeler Balancing Mechanical Kit is used to apply control laws related to inverted pendulum, with this mechanical kit I will start a serie related to control this kit. For this task I will use the Hercules LaunchPad, based on TMS-570 microcontrollers from Texas Instruments. In the next ima...   Read More
  
  

• Tasks creation in Hercules LauchPad

  12 June 2020   Tags: embeddedsystems    
  The Hercules TMS570LS04 LaunchPad Development Kit is an inexpensive evaluation platform designed to help usere and get started on development with Hercules microcontrollers platform.   Read More
  
  

• Communication wireless using 3DR Telemetry Radio

  12 June 2020   Tags: rf     embeddedsystems     control    
  The 3DR Radio is the easiest way to setup a telemetry connection between your autopilot and a ground station. Bellow you can see the simple test setup using a computer, any serial-usb adapter and a couple of telemetry radio, to prepare the setup you just need to connect the ground module directly...   Read More
  
  

Embedded Systems

• Building NuttX for Beaglebone Black (BBB)
• Heterogeneous Co-Simulation - Software and Hardware
• State Chart XML SCXML - Generating C Code Using XMLStarlet
• Tasks creation in Hercules LauchPad
• Communication wireless using 3DR Telemetry Radio

RF

• Communication wireless using 3DR Telemetry Radio
• Investigating Car Key (RF Remote Control) With HackRF One - Part 1

Control Systems

• Control Systems - The Step Response
• Two-Wheeler balancing robot
• Communication wireless using 3DR Telemetry Radio

Digital Processing

• Building NuttX for Beaglebone Black (BBB)
• Heterogeneous Co-Simulation - Software and Hardware
• VHDL - Two Logic Gates Analysis

Analog Electronic

• Operational Amplifier Series - Comparator Circuit

Security

• Using ONOS as the Control Plane
• KeePass Integration with AutoHotKey
• Next Generation SDN - P4Runtime Basics
• Buffer Overflow Through Vulnerable Program (Unix OS)
• Stack Overflow Explained

Reverse Engineering

• Buffer Overflow Through Vulnerable Program (Unix OS)
• Stack Overflow Explained
• Investigating Car Key (RF Remote Control) With HackRF One - Part 1
• Reversing a BIOS Flash Via Hardware - First Steps

Software Development

• State Chart XML SCXML - Generating C Code Using XMLStarlet
• Reading XML Files in C++ (libxml2)
• Setting up Uncrustify Tool for Git Automation (C/C++ Languages)
• Test Coverage Using Google Test, GCov and LCov
• Base Project to Use GTest and GMock for Unit Tests

Hardware

• Beaglebone Black - Soldering Jtag Connector

Computer Network

• Enabling ONOS Built-in Services
• Using ONOS as the Control Plane
• Yang, OpenConfig and gNMI
• Next Generation SDN - P4Runtime Basics

Task Automation

• KeePass Integration with AutoHotKey