Hello,
I am very new to Arduino programming. When programming how do I reference the PINs in a Arduino Mega?
For example, for PIN A0. Do i code with 0 or A0?
Also, when using MCP23017 Module, do i use PIN 0 or GPA0?
Best Regards
Bob
so as they are marked on mega board.
You can always use the pin names as printed on the board as the A* pin names will be converted to the corresponding actual pin numbers when the code is compiled.
When used with the analogRead() function you can refer to the A* pins by just their number because the compiler understand the difference between say digital in 0 and analogue pin 0 but I suggest that you stick to the full names
Out of interest try printing the value of A0 to see the real pin number, which is not 0
14?
So for Analog, use A0, A1 etc?
And for digital, D0, D1, etc?
No on a Mega
Does a Mega have pins labelled D0, D1 etc ?
I see D next to digital pins in this diagram i have from Arduino. That is why i askedd about digital pinsd as well.
My question was
Here is a picture of a genuine Mega board
Does it have pins labelled D0, D1 etc ?
No it does not. Point taken.
Thank you!
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