I want to do something along the lines of
for (int i = 0; i < 4; i++) {
analogRead(i);
}
Which appears to work, but the following does not:
for (int i = 0; i < 4; i++) {
pinMode(i, INPUT);
pinMode(i + 4, OUTPUT); // should make Analog Pin (i + 4) into an output
digitalWrite(i + 4, LOW);
analogRead(i);
}
Instead, it appears to treat the pin addressed by digitalWrite(i + 4, LOW);
as one of the digital pins.
Do I really have to explicitly specify A0, A1, A2, ... anytime I want to loop over the analog pins?