I am working on a project that will need the 15 I/O pins that are not wired up on the production Arduino Mega 1280 or 2560.
I will be making my own boards so i will be able to access them. My question is does the IDE support these pin choices directly e.g.
digitalWrite(65,HIGH) or would I have to use bit level addressing?
In my current sketch if I use a nonsense pin number like 231, or such the compiler, does not complain.....IDE 22, but I can't yet access those extra I/O pins to see if they are responding to my program when valid unused pin numbers are used.
The tables under the covers that Arduino uses to map digitalRead/Write input pin numbers to AVR ports/bits do contain 69 entries, as opposed to 54. So based on simply a quick perusal of the code, it does appear that the software will support all 69 IO points.