Microcontroller Interrupts | Embedded System Project Series #17

I explain how microcontroller interrupts work by mixing theory with a code example. For fun, I let ChatGPT generate my code example. I also add some functions in my project that lets me add new GPIO interrupts more easily. Finally, I bump the clock speed of my microcontroller from 1 MHz to 16 MHz, not because I need to, but because I can.
0:00 Outline
3:12 Why polling is bad
9:40 How does interrupts work?
20:30 Interrupt advantages
21:38 ChatGPT code example
25:56 Interrupt vector table
28:47 Disassembly of ISR
30:36 GPIO interrupts in my project
38:25 PORT1 and PORT2 ISRs
42:30 Test my code
44:25 Fix my code
46:43 Commit 1
47:27 Increase clock speed
53:25 Commit 2
#embeddedsystems #cprogramming #microcontroller
🌍 Links related to this video
github.com/artfulbytes/nsumo_...
🌍 Find me here
GitHub - github.com/artfulbytes
Website - www.artfulbytes.com
👨‍💻 About me
Hi and welcome. I'm Niklas, an embedded systems engineer from Sweden. On this channel, I make practical videos about embedded systems or, in general terms, about building and programming hardware.

[@reinasama904]

Beautiful series! Everytime I come back to these videos I appreciate them even more, thank you man!

[@furkanozata6775]

Your explanations in the videos are pretty clear and understandable. Thanks a lot. 👏👏👍

[@raghunathpalla8928]

Pretty much well explained, amazing content about interrupts.

[@contarr2801]

Thank you for such a good educational video! I am lerning the subject, which called "Operating System" and this explanation about microcontrollers interruption gave me much clear vision on how pc works.

[@artfulbytes]

Glad you found it useful. Yes studying a simpler microcontroller can help you better understand how more complicated computer work.

[@tidlywidly4402]

You are the best.

[@syeddanialahmed9353]

Great content 💕💕

[@tedelctro6849]

good job you are doing great !

[@artfulbytes]

There is a mistake in the code at 50:55. It should be:
BCSCTL1 = CALBC1_16MHZ;
DCOCTL = CALDCO_16MHZ;
I shouldn't or them. I notice and fix this in my next video.

[@johanliebert2048]

hop hop hop nice content parked

[@artfulbytes]

hop hop

[@connectme2karthik]

Nice video series. It would be great if you can make one series on embedded Linux operating system based on yocto framework.

[@artfulbytes]

I might be heading in that direction for a future project, will see:)

[@xesemesa12345678]

One question if the IVT is in the flash how can you change the ISR?

[@artfulbytes]

The addresses of the entries in the IVT are fixed*, but the entries themselves (ISR addresses) can be changed. *Technically, some architectures also allow you to relocate the IVT.

[@madhusudhanan9278]

Hey, which linux do you use and what is the name of that embedded system IDE name? -Thank you!

[@artfulbytes]

Hi, Ubuntu Linux and the IDE is Code composer studio.

[@nfjeldberg]

Please show us how to mount a flamethrower!

[@artfulbytes]

🇳🇴🔥

[@zameerahmed1775]

Ur an awesome & exceptional artist cum programmer cum hardware engineer ??? ....The IIT's in India need you .
I need some help from you
Can we get together & start a company . There are lots of oppurtunities in India ............. we can focus on Iot / bluetooth products and sell them in the international market. The dev/qa labour cost is very cheap in India .................
Love to hear from you