digitalWrite(array,1) bug?

Posted on Thu 28th, April 2016

• #1

Maarten

Test performed on Espruino Original Board and STM F4 with 1v85.

var pins = [C7,C8];

digitalWrite(pins,0); // Sets both pins to low
digitalWrite(pins,1); // Only sets C8 to high

digitalWrite(pins[0],0);digitalWrite(pins[1], 0); // Works as expected
digitalWrite(pins[0],1);digitalWrite(pins[1], 1);  // Works as expected

Best regards,
Marten

• #2

Gordon
Unless I'm missing something, this is all documented in the digitalWrite reference?
```
digitalWrite([LED1,LED2], 0) // both off
digitalWrite([LED1,LED2], 1) // LED2
digitalWrite([LED1,LED2], 2) // LED1
digitalWrite([LED1,LED2], 3) // LED1 + LED2
```
Basically if you put an array in then you can write the pins directly with a binary number - it's hugely useful for things like LED displays, where you might want to write values to several pins at once.
• #3

Maarten in reply to @Gordon

You're correct - I didn't read the note carefully enough. Sorry.

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digitalWrite(array,1) bug?

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