Programming ATTiny with Arudino (Hi Low Tech) Enabling Internal Pullup Resistors

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1

Hi Gang

I'm programming an ATTiny with Arduino (Hi Low Tech) and was wondering if I can enable the internal pullup resistors with...

pinMode(2, INPUT_PULLUP);

rather than...

pinMode(2, INPUT);
digitalWrite(2, HIGH);

I don't want to damage anything.

Cheers

Jase :slight_smile:

2

You won't damage anything.

But the "internal pullup" thing is, in my opinion, "hokey"; they're weak.
Real resistors are solid and inexpensive enough, 10kΩ.

But since the I/O pins are Inputs by default, in setup() pinMode(pin, INPUT); isn't necessary.

3

"hokey"? They're all that is needed for button presses.
"Weak", not many mA of high output drive.
Use depends on the application.

4

Hi Guys

Thanks for getting back to me. I'm more concerned as to whether the ATTiny will get the line of code...

pinMode(2, INPUT_PULLUP);

and enable the internal pullups.

Cheers

Jase :slight_smile:

5

I cannot answer the MIT cord, but tthd answer for this core is definitely YES:
/arduino-tiny/

Ray