Access digital port D12

Projects Programming
1

Hi! Tell me how to read the PB4 port bit, for example, on an arduino nano using the C language? I looked at different forms, I can not figure out how to do it. I tried digitalRead, it worked. And there are other ways to read a port bit without digitalRead? I want to make the program as fast as possible.

2

Why ?

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1 Like
4

How fast?

5

Code your project in assembler, it doesn't get any faster than that.

6

Thanks, I'll try programming in C for now, but your suggestion is interesting.

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As far as the arduino with the microcontroller allows.

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I'm interested to know

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