I’m coming today with an interesting topic. It will be a pointer to a function. Unlike “regular” pointers, they are a bit harder. Because functions define more things than just a regular variable. Pointer to a function Pointers can point to any memory cell, and our program code is nothing more than Read more
You’ve surely more than once on the Internet (and not only there) seen problems from people taking their first steps with microcontroller programming. One of such problems is that we can’t “do many things at once”. For example, wait for a measurement while at the same time blinking an LED Read more
In 2019, I asked the community of the STM32 Polska group on Facebook which IDEs or other editors they use to write code for STM32. In 2019 we still didn’t have STM32CubeIDE, so that ranking is already outdated. Time to refresh the stats. I asked programmers again what they use. Read more
If we think about debugging, what comes to mind? Breakpoints, stepping through code, but above all printing. When dealing with microcontrollers, most often we send messages to the serial console terminal on the PC. We use one of the UART interfaces for this. What if we don’t have that UART? Read more
This post is the beginning of a larger series of articles on my blog. Something that I had my eye on since the first information from ST Microelectronics came into my hands. We’ve got a new series of microcontrollers—and not just any! The STM32U5 microcontroller family The new family has Read more
Books about the C language describe everything that exists in this language. Literally every smallest detail. Do you need all of it? Of course not! I selected 6 basic elements that, in my opinion, you must learn in order to start writing in C with microcontrollers in mind. 1. Conditional Read more
You can often come across big banners, slogans, or even course and book titles: “C for AVR”, “C course for STM32”. This can give the impression that the C language is different for each microcontroller. Even more so for a computer, right? So let’s think about how C for microcontrollers Read more
The topic of UART combined with DMA keeps coming back like a boomerang. Especially receiving data on a microcontroller causes the most problems. Why? Because we don’t know how much data will arrive. That’s why receiving via DMA is a somewhat poor idea, because we have to specify in advance the amount of data being received. But not always…
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Doing graphics on microcontrollers is always a huge challenge. Even more so if it’s supposed to look nice. For years we’ve known simple so‑called GFX libraries that let us draw bitmaps or various fonts. However, that’s not enough, because often our GUI still looks like it came from 1990s devices, Read more
For some time now I’ve been observing what’s happening among beginner embedded programmers. Actually, not only among them, but also in what embedded programming learning materials are passing on to future juniors. I have some serious reservations.
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