Port Register Control | Increase speed of Read/Write - Arduino101

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🔥Another class for the Arduino 101 series. These videos will have some more difficult Arduino programming. In this video I show you how use the port register control and why is that better...
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Tutorial Website: electronoobs.io/tutorial/201
Tutorial: electronoobs.com/eng_arduino_...
ATmega328p datasheet: bit.ly/3csU1i6
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#Arduino
#tutorial
#registers

[@mmawad100]

PLEASE CONTINUE WITH THE ADVANCED STUFF THERE IS A SERIOUS LACK ON THE INTERNET FOR THAT

[@willtipton]

I agree! 114%

[@MrRijoAlex]

Truer words have never been spoken!

[@Danixu86]

Well there's stuff on internet, the problem is that is not well explained and this videos helps a lot.

[@AdithyanKNair]

still facing this problem

[@minusharma1738]

You are so underrated 😭

[@sawansihag6974]

Yes, I am amazed by the amount of knowledge I got from this video

[@DivyanshMMMUT]

I think programming directly using Register Control is more fun as we are literally seeing what the controller is actually doing.... More like an assembly level Language 🔥. - Thankyou from India 🙏

[@TimNortonGuru]

I did not realise the Arduino IDE could accept direct port addressing. Thanks

[@ELECTRONOOBS]

ERROR: To invert a byte we use "~" and not the "!" Sowy! :) Arduino Course (Spanish): bit.ly/3ldW6kO Follow me on FACEBOOK for more: facebook.com/Electronoobs Help me on Patreon: www.patreon.com/ELECTRONOOBS

[@bilelhafsi3320]

Thank you for the vidéo!!! Could you please tell me which software do you use to make video animations ?

[@monleyson8668]

Ok

[@sammflynn6751]

Amazing, crystal clear explanation . wow, nobody explains it better than you. You deserve a million subs man.

[@saram263]

The diagrams of the ports on the arduino board were so helpful and saved me from scrolling through pages of documentation as a noob, thank you!

[@anonymoususer900]

Last time i honestly told you that the video(internal comparator one) wasnt very understandable for intermediate or new people. DRAMATIC IMPOROVEMENT. Awesome tutorial......i will use this in my led cube project.....Thanks!

[@ManojSharma-ud3ox]

You explained it very well. I am a mechanical engineering graduate and have lots of projects which involved heavy use of electronic. This video was very clear and understand everything you said. Well done!!

[@scottstevens7569]

Very Good Explanation! We really do need more of this type of thing as there is not much available, and not as easy to understand as yours is. Clear, concise and relevant.

[@baladshin7100]

One of the best videos I’ve ever seen on KZbin for arduino tutorial 😍 keep going bro! 💪🏻 love from IRAN 🇮🇷

[@bobvanwagner6099]

i've programmed in C since Bell Labs in the late '70-s and know the concepts like this better than the back of my hand, but rarely have I seen such a clear and careful explanation. Great Job!

[@padmalayarawal3091]

This is really a great explanation as well as great presentation. Port manipulation now looks more easy to get understand. Thank you. 🤩

[@kaden56]

I will be a serious follower of this more advanced line of arduino info. This is the stuff that makes all my old projects finally work properly 😂

[@mdoering]

The production value of your videos is next level... I LOVE the motion tracked labels. New subscriber achieved.

[@MarlinFirmware]

For our project we used “FastIO” headers that define helpful macros to initialize, read, and write to the port bits using the digital PIN number, concealing all the binary math. They really speed up digital I/O, so we extended them to several platforms. For analog pin reading you can do similar tricks, by first setting up the pin for reading, then starting the ADC, and then going off to do other things and picking up the ADC result later, instead of calling analogRead() and waiting for it to return. That would make a good related subject for a future video. Cheers!

[@richardlighthouse5328]

If you need performance, then write in pure c/c++.

[@MD-vs9ff]

@@richardlighthouse5328 I don't know what you mean. Arduino is a pure C++ set of libraries, with just some cosmetic things handled automatically (like function prototypes).

[@richardlighthouse5328]

@@MD-vs9ff I meant without any framework. Just AVR helpers.

[@stark_energy]

@@richardlighthouse5328 What it means: using FastIO is not only having near equal the direct (without any framework) but also platform independent. The hard part is always making the code has near highest performance BUT at the same time platform agnostic (i.e. can be run on Mega, ESP32, etc without changing your code).

[@hrperformance]

I learned so much from this video. This guy has a serious talent. Much love from the UK

[@amarjitmoirangcha4521]

You are doing great I really like this. Such type of videos are very rare on internet which is teaching on register level for Arduino. Thanks

[@richardsteen4340]

Excellent tutorial..!! Did some assembly programming years ago in college.. This has helped me to remember things I forgot I had learned..;)

[@null8363]

I found this video and channel today, this is extremely amazing, the information and the quallity are top-notch, really thank you for your hardwork

[@antibrevity]

This is an excellent explanation of boolean port manipulation that should be easy for newcomers to understand. Great work! I see that others have already pointed out some errors, but this is still a great video.

[@Sekhar_Home]

Finaly clearly able to know bitwise operator use in Arduino... Thanx for ur awesome graphical presentation which makes the education more fun and interactive

[@nabilandadamslaboratory3422]

This video has finally demystified port manipulation. Thank you!!

[@MrAasi4]

This is one clearest tutorial of port manipulation. Good job!

[@SaminaZafar270]

This is the video that I was searching for months. This video is awesome. Please make more arduino tutorials.

[@halitekmekcioglu7150]

very clear and well explained, I wish I could listen to this in my highschool years :) Lucky newbies

[@alirezaahmadian4237]

right now im at the midle of the video and im so excited about this great explanation that made me write this comment. its great.thats exactully what i needed.

[@rikvermeer1325]

Amazing channel. I'm from software engineering and I understand this stuff but just don't know it all works like this. Thank you for clarifying!! I became a subscriber

[@saurabhgawli2167]

U deserve so much more... Just don't stop ur work... Luv from India ❤

[@kylemfwelch]

I never seen this so clearly explained before. Excellent!

[@soekma_aoeliea]

You also could use , some of its function is pretty useful

[@bhargavdayal8595]

Bro....This is one of the best explanations i have ever listened to..Great work

[@jollyjumper1873]

Nice video! This is helping me out with my graduation project. Thanks :)

[@TYGAMatt]

Very well explained. Wish you'd don't this video a few months ago so that I wouldn't have had to spend hours reading the datasheet and doing it myself. Excellent stuff

[@GrandNecro]

best tutorial i've found yet! i do have a question though. how do you read analog value? PINC register only stores the digital value of the analog pins.

[@wiktormolzahn736]

I love you!!! This ist the first Video that explanes everything nicely

[@JBAntiFan]

Very informative, thanks for putting in the effort to edit the video. I like the inclusion of the result comparison at 6:50 and the video presentation overall looks professional, I bet new players will learn a lot from this Arduino101 series. Looking for more videos like this one to come soon, again, great job mate.

[@tcrenegade]

Loved this!! I felt like I was finally learning how to use arduino as a tool

[@CNsongs]

Super helpful. Thank you very much. My university expected expected us to know these magically.

[@justdoingodswork]

Thank you so much, its so great to learn these and importance of register. I'll definitely implement these in my codes from now on. Please keep making these videos about advance coding. Thanks again

[@tanoryjakaperdana1419]

Thanks bro.. you explain these stuffs with human language.. subscribed and liked.. 👍👍👍

[@myhobbies5965]

Always waiting for such a atmega mcu program learning videos.

[@jaroslawpiotrowski210]

Very well prepared video about advanced operations on Arduino. Very well explain - THANKS !!! PLEASE continue this subjects for advanced operations !!!

[@Tuberkulo1]

Best explanation about Port Register Control so far !

[@skidroadkustom5953]

A lot of great info, thanks. I did watch this one at least 15 times

[@stephanemuller7032]

Great video man! Best explanation I've seen out there. To make your code easier to read you can also use constants like so: DDRB |= (1

[@sharingmylittleinsight]

thanks a lottt, it's worked

[@kacperfilipek8461]

PORTB ^= (1

[@Danixu86]

Nice tutorial. There are a lot of things that I did not understand until now. Also would be nice to have any tutorial like this talking about Timers and how to change it to change PWM signals for example.

[@ajeethsuryash5123]

Amazing video... Expecting more of such class...

[@piiumlkj6497]

This is a masterpiece , I love this kind of videos

[@rajneeshsingh6639]

This is the best tutorial for port register control

[@sennabullet]

A,fantastic explanation made easier to understand with superb animations. Thank you for sharing your knowledge.

[@Sekhar_Home]

Pls make more and more video on 101 arduino. I need to learn embeded system from you.. you are the best in teaching microcontroller.

[@nid274]

this is great..i never imagined there would nano to micro variation!!

[@gemininyte279]

Your videos are amazing and have helped me so much!! Thank you !!! Is there any way to read an analogue signal without using the analogRead function but rather the Port register instead?

[@stark_energy]

A very detailed and great explanation to low-level optimization to Arduino. However we should point out that this only works on specific Arduino type, different type might require different configuration (and thus different code on different platform), while on the other hand a common Arduino function like digitalRead / Write is platform agnostic, it can even run on ESP32 or ESP8266 and many other types that conform with Arduino.h standard without changing code (except the pin number). So, for the sake of simplicity and portability there is always performance hit to pay. This is true for all programming language. The more you into performance, the more specific/limited device your code can work.

[@moinshaikh6684]

Very Nice Explaination! Fallen in love with this tutorial!

[@PdroAlfMar]

Puro Oro!!!! Saludos y Gracias por tu aporte a esta comunidad!!!!

[@siddharthmali5841]

Great video as usual. But (at 10.05) while explaining the truth table for OR gate you said multiply instead of addition.

[@ChrisLocke1969]

One of your best arduino code videos yet, thanks!!

[@SudhirKumar-bq4xz]

Great and informative video as always.... :-) Sir, please make a video on how to interface external ADCs, selection of ADC, important specification while selecting a ADC.....

[@pedroaugusto5995]

Nice video, your didactics is something else!

[@PJElliot]

Very nice production quality. Using a define for the pin value B0001000 etc would make the code easier to understand, but I understand you were trying to explain bit access for which your method was clearer to someone new to the topic.

[@curiouslittledroid1234]

Great presentation. Nice video editing and great use of motion graphics.

[@vcrahul]

Dear frnd..excellent explanation...even better than greatscott's...on this subject...nice...

[@chefseg]

Great video! The explanation was clear and concise!

[@SirLeecher]

Explained it really well and helped me understand, very nice !

[@littlemadness221990]

Great video ! This is a perfect foundation for future learning.

[@juanmf]

Great stuff! I bought the starter kit only to get disappointed at the analogRead sample rate. Do you have a similar video for analogRead?

[@jstro-hobbytech]

Cool video man. Optimized code gets me going.

[@naikganesh5677]

You nailed it 🔥🔥

[@chiparooo]

Very interesting! Great graphics. Learned a lot. Thanks for sharing!

[@vitorlima2908]

Muito show sua apresentação. Curto muito o seu canal. Vc é sensacional.

[@johnni5254]

Great video! At 12:20 in the upper "loop()" commands, shouldn't those be: PORTD |= 0001000 and PORTD &= 00001000 accordingly? We're trying to set bit 3 of the register (Arduino pin D3). If we leave it as is in the video, it sets bit 1 of the register (Arduino pin D1). Do I miss something?

[@amnesie6615]

This is what I've subscribed for! COOL! Thank you!

[@SusanAmberBruce]

Thank you, I have been waiting for This tutorial, big help!

[@tejaspatil5929]

please explain even more about the arduino, this video helped me a lot, please make even more videos

[@magnetservicecenter]

First many many thanks for the video,I am from India,I am an ordinary television technical person . I don't know about programming of microcontroller. Sir you feel proud to know that after watching you video 10 to 15 times and doing some practice I found a mistakes at 12:25 in the video. I think you display PORTD|=B00000010;// set D3 to high should be PORTD|=B00001000; same to PORTD&=!B00000010, should be PORTD&=!B00001000;// set D3 to low. Many many thanks , please reply

[@ChathuraJayasundaraIMD]

Wow, awesome vid! please make a vid on timers n interrupts if it's possible. thank you

[@technicalpeaks]

what do we use for analog read?? Thanks for the rest of explanation though. great work!!

[@NiHaoMike64]

There's a header file that turns digitalWrite and digitalRead into direct register accesses. It's not enabled by default since some programs expect the delay in order to work properly, plus it only works on the "classic" Arduinos and not the ARM based ones.

[@nabilandadamslaboratory3422]

How would yo set it up so that you can assign a pin simply by referencing it's number? Similar to doing digitalRead(pin_number) and digitalWrite(pin_number).

[@DustinWill]

Best explanation and great animation. Very clearly stated.

[@shoumikahmed6373]

Waiting for it for a long time......

[@VorpalForceField]

Absolutely Fantastic Content.. Thank You !!!

[@RinksRides]

Awesome floating graphics and text!! I just finished a tutorial on Attiny85 complimentary output PWM 250KHz to 1MHz+ this could inspire me to finally make YT tutorials.

[@ELECTRONOOBS]

Go for it :)

[@tomszky88]

Hi great video. How can I display value of the input in serial monitor?

[@astrogerard]

Very good video and thanks for taking the time to do this. I think the views counter is broken because in my opinion it should be at lease 10 timers higher by now. I would like to see more advance content like this. Please consider making an advance video on interrupts using -all- the pins of the Arduino. Thanks!

[@ELECTRONOOBS]

Next part will be on interrupts

[@k0pR0LiTh0s]

Awesome! but with the register control, the sample seems to vary between 0 and 5v, instead of digitalwrite () that looks super square. (0 or 5v)

[@nyakoi]

Thank you! Always good to learn something new 😀

[@webslinger2011]

Wow! Thanks for a very good explanation on the Arduino ports.

[@aleisterlavey9716]

Did I understand it correctly, that the high time of the pulse is the time above the yellow line ?

[@simplyishan06]

Incredible is an understatement...

[@FixTronics]

U R absolutely awesome I needed these information way long time ago Thank you for sharing it 🥰⚘

[@arduinomaquinas]

Good job, like 3.1K and subscribed 👏👏👏👏👏

[@simran_army_ot7215]

Sir, please make a video about extending the range of 433mhz using transistor or ICs. Lot of people are interested in making FM transmitters. There is not even a single video about that. Hope, you will help the community.

[@VoltZero83]

if i have the port set to output, can i read the state of this port / register? In order not to use additional variables?

[@damascussteel672]

Thank you very much the signal with digital write was quickly 5 volt, by register it needed more time. am i correct? :)

[@sawansihag6974]

Thanks for sharing this precious knowledge ❤️❤️🔥

[@luisarielgonzalez4778]

Great video. Nevertheless at the end of the video (minute 12:41) a NOT (!) operator was missing through the explanation. Just a note. Thanks

[@user-ir2fu4cx6p]

9:42 After two years of trying PCM/PWM code on my ATtiny85 code I found in the internet, which I never fully understand (they use port register) , now I fully understand that code very well, BTW I study C language in the school I don't remember how boolean operators works(maybe I just past it by) , neither bit shift