Arduino External Interrupts / AVR

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This video will describe the workings of an external interrupt running on an Arduino Nano ATmega328p microcontroller.

External Interrupt code example:

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I didn't know you could use an output and input of the same pin that way, thanks. I used to get circuit cellar magazine. That was when the internet was dial-up (expensive & slow)

noweare

Great video. I have had to deal with interrupts on pic microcontrollers.

UndernetSystems

Thanks for sharing, I am trying to follow along. I can find "int!" in the built in dictionary, but not "rising" or "Int1_enable", are these words you have built or are they part of an extension? Can you please share?

PhilWaller

This is great stuff, thank you you're great.

Karl_Levine

Great video. However you introduced a different language that many Arduino users (yours included) have never heard of let alone understand. Any chance of a follow up video on how to do this with C-for Arduino. Or is it not possible?

seditiousmonkeyart

If you already have a loop of code running on the nano, how does it know to read the keyboard and toggle on pin3? And if it does do that, why not link whatever activates pin3 output to just the "functionality" of the interrupt function?

ivolol

Great video !
I would be interested to have more info on FlashForth.

e

@0033mer But how to do this without pressing Enter after selecting character on the keyboard. Even in case of Arduino when we have Serial Monitor we have press Enter. But how to this in case of fx Atmega8? So far I did not find solution in internet.

incxxxx

I have seen you use that forth language before, and it seems useful to use the keyboard like that to communicate with the micro.
Can one use it to communicate with an AVR microcontroller if you program it in C first? (Not using the Arduino system? )

Flapjackbatter

The part where the same pin becomes both input and output is driving me insane.

fitzgeraldmistral

Everything is simple and clear except how to make the keyboard button the inerrupter.

incxxxx

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