How can i set the pin?

Projects Programming
1

how can i set so that when pin 28 is high, something has to happen ? if (28 == HIGH)

2

Look at the digital examples that ship with the IDE.

if (digitalRead(28) == HIGH) {

3

you mean something like

if (digitialread(sdofjnsodvjb) == higherThenHigh)
{
goLowerThenHighestHigh();
}

4

thank you very much for both answers: D

5

I still want to ask how can I take more buttons into one if if (digitalRead[4,5,6,7] == HIGH)

6

You have to do that sequentially, unless you can arrange for all the pins to be on the same port,up to a maximum of eight inputs

7

if (digitalRead(1) == HIGH && digitalRead(2) == HIGH && digitalRead(3) == HIGH…

8

Thank you

9

This is a rare case where I often utilize white space. Some compilers enforce a maximum of 255 characters per line, in any case, it is easier to read:

if (digitalRead(1) == HIGH
                   && digitalRead(2) == HIGH
                   && digitalRead(3) == HIGH
                   && digitalRead(4) == HIGH
                   { ...

If you have a ridiculous number of pins, you can do it programmatically.

int result = LOW;
for (i = 0; i < numPins; i++) {
  result &= digitalRead( pins[i] );
}
10

{coughs, politely}

11

Not seeing it... but at least this needs to be:

int pins[] = {1, 2, 3, 4 };
int numPins = sizeof pins[] / sizeof pins[0];
int result = HIGH;
for (int i = 0; i < numPins; i++) {
  result &= digitalRead( pins[i] );
}
12

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.