The featured picture of this post has been created by DALL-E.
It often happens in embedded debugging that you suddenly end up in the interrupt dispatch table while single-stepping through your code. Another unrelated problem is that sometimes, single steps can take an eternity. In this blog post, I address both issues and describe how to circumvent them in a gdbserver implementation.
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What is the purpose of the C++ qualifier volatile, what does it have to do with race conditions, and what are Heisenbugs?
Debugging classic AVRs in the Arduino IDE 2 is finally possible! It took a while to implement this feature, but now it is just a piece of cake to enable debugging and start using the debugger.
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The featured picture of this post has been generated by Dall-E.
Three years ago, I wrote a short blog post about AVR fuses and what to do when you brick your MCU by setting the wrong fuse. This included a lot of jumper wires. In order to get rid of the jumper wires, I decided recently to design an Arduino shield that supports resurrecting bricked MCUs, which you can now buy at Tindie.
If you own several badges, cards, or tickets and would like to automatically publish the number of unused badges on the web in real-time, there is no off-the-shelf solution. This post describes how to build such an IoT system.
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The featured image of this blog post is based on a picture by Gerd Altmann from Pixabay.
When you want to connect a sensor or actuator to the Internet and there is no WLAN around, then the next best option is LPWAN (Low-Power Wide Area Network). In this blog post, I will describe how to connect a sensor to a website using the AVR-IoT Cellular Mini board by Microchip.
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The featured image of this post is by Thomas from Pixabay.
What can you do to connect many I2C devices with the same device address to an MCU? Most often, the advice is to use hardware solutions. Here, we will look at how to solve the problem with software employing the FlexWire library.
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The featured picture of this blog post is by user18526052 on Freepik.
The Wire library is the one that connects your Arduino to sensors and actuators that communicate using the I2C protocol. Unfortunately, this library has a lot of shortcomings, and often you want to replace it with a different I2C library. Replacing the Wire library on a per-sketch basis turns out to be more complicated than one would expect. In this blog post, I describe an easy way to accomplish that.
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Microchip launched a new generation of ATtinys. Is it worthwhile to consider them for your next DIY project?
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The featured picture of this blog post is by rawpixel.com on Freepik.
AVR MCUs sometimes appear to restart without you having pressed the RESET button or any other obvious reason. Is that a sign of resilience or of looming danger? How can you find the root cause?
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