Getting Started With CUDA C on an Nvidia Jetson: A Meaningful Algorithm

Mohammed Billoo May 11, 2024

In this blog post, I demonstrate a use case and corresponding GPU implementation where meaningful performance gains are realized and observed. Specifically, I implement a "blurring" algorithm on a large 1000x1000 pixel image. I show that the GPU-based implementation is 1000x faster than the CPU-based implementation.

Five Embedded Linux Topics for Newbies !

George Emad May 9, 2024

Are you an embedded systems enthusiast looking to broaden your horizons with embedded Linux? explore those 5 topics.

Introduction to PIC Timers

Luther Stanton May 8, 2024

The fourth in a series of five posts looks at 8-bit PIC hardware timers. After a review of basic timer functionality, the Timer0 module operation and configuration is reviewed and a basic application implemented using Timer0 to blink external LEDs at a frequency of 0.5Hz.

You Don't Need an RTOS (Part 2)

Nathan Jones May 7, 20241 comment

In this second article, we'll tweak the simple superloop in three critical ways that will improve it's worst-case response time (WCRT) to be nearly as good as a preemptive RTOS ("real-time operating system"). We'll do this by adding task priorities, interrupts, and finite state machines. Additionally, we'll discuss how to incorporate a sleep mode when there's no work to be done and I'll also share with you a different variation on the superloop that can help schedule even the toughest of task sets.

Unuglify C++ FSM with DSL

Massimiliano Pagani May 7, 2024

Domain Specific Languages (DSL) are an effective way to avoid boilerplate or repetitive code. Using DSLs lets the programmer focus on the problem domain, rather than the mechanisms used to solve it. Here I show how to design and implement a DSL using the C++ preprocessor, using the FSM library, and the examples I presented in my previous articles.

Turn It On Again: Modeling Power MOSFET Turn-On Dependence on Source Inductance

Jason Sachs April 29, 2024

This is a short article explaining how to analyze part of the behavior of a power MOSFET during turn-on, and how it is influenced by the parasitic inductance at the source terminal. The brief qualitative reason that source inductance is undesirable is that it uses up voltage when current starts increasing during turn-on (remember, V = L dI/dt), voltage that would otherwise be available to turn the transistor on faster. But I want to show a quantitative approximation to understand the impact of additional source inductance, and I want to compare it to the effects of extra inductance at the gate or drain.

Linear Feedback Shift Registers for the Uninitiated

Jason Sachs April 28, 2024

In 2017 and 2018 I wrote an eighteen-part series of articles about linear feedback shift registers, or LFSRs:

div.jms-article-content ol > li { list-style-type: upper-roman } Ex-Pralite Monks and Finite Fields, in which we describe what an LFSR is as a digital circuit; its cyclic behavior over time; the definition of groups, rings, and fields; the isomorphism between N-bit LFSRs and the field \( GF(2^N) \); and the reason why I wrote this series

2024 Embedded Online Conference's Schedule

Stephane Boucher April 25, 2024

Welcome to the 2024 Embedded Online Conference! Like with previous years, this year's event will be a mix of pre-recorded on-demand sessions and live Zoom sessions. We've carefully curated the schedule to ensure that you have access to a wealth of valuable content throughout the week.

Most talks will be released on-demand, while most workshops and keynotes will be done live on Zoom. There will also be multiple live 20-minute-long Q&A sessions happening throughout the week, providing you...

A design non-methodology

Colin Walls April 25, 2024

Although writing an RTOS or kernel may be an interesting project, it is unlikely to be a wise course of action.

Working with Microchip PIC 8-bit GPIO

Luther Stanton April 24, 20241 comment

The third in a series of five posts looks at GPIO with PIC 8-bit microcontrollers. After a detailed review of the registers for configuring and managing GPIO on the PIC18F47Q10 processor, a basic application is stood up programming those registers to blink external LEDs at 0.5Hz.

Introduction to Microcontrollers - Beginnings

Mike Silva August 20, 201313 comments

Welcome to this Introduction to Microcontroller Programming tutorial series. If you are looking to learn the basics of embedded programming for microcontrollers (and a bit of embedded hardware design as well), I hope these tutorials will help you along that journey. These are my first postings here, and I am writing this tutorial series because over the years I have seen countless newbies asking the same questions and tripping over the same stumbling blocks, and I thought I might be able to...

MSP430 Launchpad Tutorial - Part 2 - Interrupts and timers

Enrico Garante June 17, 201342 comments

What is an "interrupt"? It is a signal that informs our MCU that a certain event has happened, causing the interruption of the normal flow of the main program and the execution of an "interrupt routine", that handles the event and takes a specified action.

Interrupts are essential to avoid wasting the processor's valuable time in polling loops, waiting for external events (in fact they are used in Real-Time Operating Systems,

VHDL tutorial - A practical example - part 3 - VHDL testbench

Gene Breniman June 25, 20118 comments

In part 1 of this series we focused on the hardware design, including some of the VHDL definitions of the I/O characteristics of the CPLD part.  In part 2, we described the VHDL logic of the CPLD for this design.  In part 3, we will show the entire VHDL design and the associated tests used to prove that we have, in fact, designed what we started out to design.

First, let's pull all of the pieces of the prior design together into a...

Analyzing the Linker Map file with a little help from the ELF and the DWARF

Govind Mukundan December 27, 201522 comments

When you're writing firmware, there always comes a time when you need to check the resources consumed by your efforts - perhaps because you're running out of RAM or Flash or you want to optimize something. The map file generated by your linker is a useful tool to aid in the resource analysis. I wanted to filter and sort the data generated in an interactive way so I wrote a C# WinForms application that reads the data from the map and presents it in a list view (using the awesome

How FPGAs work, and why you'll buy one

Yossi Kreinin June 20, 201315 comments

Today, pretty much everyone has a CPU, a DSP and a GPU, buried somewhere in their PC, phone, car, etc. Most don't know or care that they bought any of these, but they did.

Will everyone, at some future point, also buy an FPGA? The market size of FPGAs today is about 1% of the annual global semiconductor sales (~$3B vs ~$300B). Will FPGA eventually...

MSP430 LaunchPad Tutorial - Part 4 - UART Transmission

Enrico Garante July 3, 201320 comments

Today we are going to learn how to communicate using UART with the Launchpad. For this purpose I will replace the default microcontroller that comes with the board with the MSP430G2553. It is the most powerful device in the MSP430 Value Line and it comes with an integrated hardware UART module, along with 16 Kb of Flash memory, 512 bytes of SRAM and an 8-channel, 10 bit ADC.

UART communication can be useful when dealing with sensors: as a basic example, we could...

How to Read a Power MOSFET Datasheet

Jason Sachs September 15, 20159 comments

One of my pet peeves is when my fellow engineers misinterpret component datasheets. This happened a few times recently in separate instances, all involving power MOSFETs. So it’s time for me to get on my soapbox. Listen up!

I was going to post an article on how to read component datasheets in general. But MOSFETs are a good place to start, and are a little more specific. I’m not the first person to write something about how to read datasheets; here are some other good...

Understanding and Preventing Overflow (I Had Too Much to Add Last Night)

Jason Sachs December 4, 2013

Happy Thanksgiving! Maybe the memory of eating too much turkey is fresh in your mind. If so, this would be a good time to talk about overflow.

In the world of floating-point arithmetic, overflow is possible but not particularly common. You can get it when numbers become too large; IEEE double-precision floating-point numbers support a range of just under 21024, and if you go beyond that you have problems:

for k in [10, 100, 1000, 1020, 1023, 1023.9, 1023.9999, 1024]: try: ...

MSP430 Launchpad Tutorial - Part 1 - Basics

Enrico Garante June 14, 201320 comments

TI's LaunchPad is a complete MSP430 development environment: all you have to do is download and install CCS IDE (login required), connect your G2231-ready LaunchPad to your computer with the included mini-usb cable, and you are ready to code!

Texas Instrument MSP430 LaunchPad

So, let's see how to start a new project in Code Composer Studio. This IDE is derived from Eclipse, so if you used it before you shouldn't have much problems.

We'll write a simple program that will...

Adventures in Signal Processing with Python

Jason Sachs June 23, 201311 comments

Author’s note: This article was originally called Adventures in Signal Processing with Python (MATLAB? We don’t need no stinkin' MATLAB!) — the allusion to The Treasure of the Sierra Madre has been removed, in deference to being a good neighbor to The MathWorks. While I don’t make it a secret of my dislike of many aspects of MATLAB — which I mention later in this article — I do hope they can improve their software and reduce the price. Please note this...

2024 Embedded Online Conference's Schedule

Stephane Boucher April 25, 2024

Welcome to the 2024 Embedded Online Conference! Like with previous years, this year's event will be a mix of pre-recorded on-demand sessions and live Zoom sessions. We've carefully curated the schedule to ensure that you have access to a wealth of valuable content throughout the week.

Most talks will be released on-demand, while most workshops and keynotes will be done live on Zoom. There will also be multiple live 20-minute-long Q&A sessions happening throughout the week, providing you...

EOC 2024 - I Will Attend Giveaways!

Stephane Boucher April 22, 20242 comments

With the Embedded Online Conference just around the corner, we are very excited to announce an opportunity for you to win one of many amazing prizes, thanks to the generous contributions of DigiKey, Jetperch and Saleae!

For a chance to win one of the following prizes, all you have to do is help us with spreading the word about the conference.

Prize: LulzBot Mini...

Call for Bloggers!

Stephane Boucher July 12, 2023

Are you passionate about embedded systems? Do you have valuable insights, tips, or stories to share with the embedded community? Do you want to reach a large and engaged audience of embedded enthusiasts and professionals? We are currently looking at adding a few more inspired writers to our team of bloggers.

Free Sessions @ the 2023 Embedded Online Conference

Stephane Boucher April 21, 2023

Although the 2023 Embedded Online Conference will officially start only on Monday 04/24, today we are pre-releasing all Theatre Talks and Demos in order to give attendees a headstart over the weekend on a very busy program.

The good news is, you don't need a paid registration to access theatre talks and demos.  All you have to do is create an account on the EOC website and skip the payment part.  

Here are the 37 sessions that you can watch for...

Back from Embedded World 2023

Stephane Boucher March 23, 20231 comment

It was great to be back in Nuremberg for Embedded World after three long years. The trade show is probably the most significant event in the embedded systems industry, and it was a relief to see that it has survived the pandemic with more than 900 vendors exhibiting.

I recorded this video on the very first day when the doors opened.  What you see in the video is probably 10% or less of the full show floor.  I am always impressed by the size of...

What to See at Embedded World 2023

Stephane Boucher March 6, 2023

Embedded World 2023 is just around the corner, and I am thrilled to be attending this year's edition in Nuremberg, Germany. The last time I was there was three years ago, and the world was on the cusp of a major pandemic. It was a surreal experience as many booths and exhibits were empty and cordoned off by security tape due to last-minute cancellations. It was clear that something big was happening. 

But with more than 900 vendors exhibiting this year, I'm glad to see that Embedded...

Favorite Software AND Hardware Tools for Embedded Systems Development

Stephane Boucher October 5, 2022

Last year, at the Embedded Online Conference, we interviewed the speakers and asked them what were some of their favorite software and hardware tools for Embedded development.  

We aggregated all their answers in one insightful video that you can watch here.

Although you should really watch the video in order to get the full picture, I've compiled the following non-exhaustive list for the fun of it (again, I cannot overstate enough how much valuable...

A New Related Site!

Stephane Boucher September 22, 20222 comments

We are delighted to announce the launch of the very first new Related site in 15 years!  The new site will be dedicated to the trendy and quickly growing field of Machine Learning and will be called - drum roll please - MLRelated.com.

We think MLRelated fits perfectly well within the “Related” family, with:

  • the fast growth of TinyML, which is a topic of great interest to the EmbeddedRelated community
  • the use of Machine/Deep Learning in Signal Processing applications, which is of...

New Promo Video for the 2022 Embedded Online Conference

Stephane Boucher April 19, 2022

Less than a week to go before the conference! Check out our 2022 Embedded Online Conference promo video, featuring (in order of appearance) Helen Leigh, Peter McLaughlin, Jack Ganssle, Tyler Hoffman, Steve Branam, Colin O'Flynn, Miro Samek, Henk Muller, Jacob Beningo, Harrison Donahue, Kate Stewart, Clive (Max) Maxfield, Don Wilcher, Adam Taylor, and Jean Labrosse.

If you haven't registered for the conference yet, please consider doing so today.  Make sure to use the...