Installing Processor Expert into MCUXpresso IDE

With the new MCUXpresso versions out, and because it has been a while I showed how to install Processor Expert into Eclipse, here is an update how to do this.

Processor Expert in MCUXpresso IDE
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GNU Coverage (gcov) with NXP S32 Design Studio IDE

The open-source GNU tools provide a rich set of tools to help developing software. Some are clearly more for the high-end application development. But many of the tools are applicable for the more restricted embedded software development process as well. One is gcov, or the GNU Coverage Tool. Coverage is essential for the testing phase, as it tells you what part of code have been used and ‘covered’. This article describes how GNU coverage can be added the NXP S32 Design Studio IDE.

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Recovering bricked LPC55Sxx EVK Boards

While developing applications, it can happen that things go wrong. And in my case I ended up with two LPC55Sxx EVK boards on my desk, which seemed not to be usable any more. The issue: the boards were not accessible with the debug probe, because right after main they muxed the pins in a wrong way :-(.

bricked board with set of debut probes

The standard GDB debug connections (both on-board and off-board) were not able to regain access of the board, because the MCU was running into the fault condition pretty much right out of reset.

Luckily, after a lot of trial-and-error, I have found a way to recover them.

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Using Custom Source File Extensions with Eclipse CDT Gnu Make Builder Projects

One great thing with the Eclipse Gnu Make Builder (aka ‘auto make’ or ‘auto build’) feature: just add source files (*.c, *.cpp, …), and with kind of magic, they all get compiled and linked properly.

But for something easy and convenient: is it hard to use custom file extensions? So what if I want to use a different file extension for my source files, different from the standard ones? Actually Eclipse CDT can do this too, it just takes two settings to recognize, compile and link source files with custom extension.

Custom file extension with Eclipse auto-build
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Debugging with Dynamic Printf Breakpoints

I’m not a big fan of using printf() in embedded applications, but I have to admit that in some cases it is very useful. One problem in debugging embedded systems debugging is getting values or information off the target: because of the limited resources this can be very challenging.

So why not doing this with the debugger in an automated way? And here dynamic printf breakpoints can help: it adds printf()-style output on-the-fly to your program without the need to recompile or restart your program, without the need to run printf() on the target:

Using Dynamic Printf Breakpoint
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MCUXpresso IDE 11.5.0

I’m now in the middle of the university fall semester exam season with writing exams and grading student work, and the same time the new semester courses need to be prepared. With the global silicon and board shortage, this will be again a challenge to equip all the labs with the needed infrastructure. The good thing is that there is no shortage on software and tools side of the infrastructure: NXP released last week their new flagship Eclipse based IDE: the MCUXpresso IDE 11.5.0. Time to check it out for the upcoming lectures and classes….

NXP MCUXpresso IDE Version 11.5.0

Spoiler Alert: It has a new view for FreeRTOS lovers, plus new features for energy/power measurements!

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DIY Split-Flap Display

Split-flap displays are electromechanical display devices, which were common in airports or railway stations a few years ago.Unfortunately, most of them are gone and replaced by LED displays. Why not create a DIY version of it?

2×10 Split-Flap Display
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McuOnEclipse Components: 26-Dec-2021 Release

I’m pleased to announce a new release of the McuOnEclipse components, available on SourceForge. This release includes several bug fixes, support for more devices, and updated components like FreeRTOS, MinINI, Percepio Tracealyzer and SEGGER SystemView.

SourceForge

SourceForge

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Round MetaClockClock

It has been a while since my last MetaClockClock, and with the continued shortage of electronics on the market I had no chance to order new parts. But I still had some remaining parts, and with the modular design of the ’round’ clocks I was able to build up another one, but this time with even less than the usual minimum of 24 clocks:

So if you are up to build a MetaClockClock with less clocks, this might be the way for you.

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