What is LED1/A13? (addressing pins via variables)

Hi,

The issue you have is that Espruino doesn't keep built-in variables/functions in the symbol table, because there's just not enough RAM. That means that while you can access a variable or function by name, you can't access it as if it were an actual member of the object. It's something I'm hoping to fix - there is a bug open for this but it's a reasonably big change.

However nothing stops you from doing:

leds = [LED1,LED2,LED3];
leds[1].write(1);

or even:

leds = [LED1,LED2,LED3];
digitalWrite(leds, 0b100);
digitalWrite(leds, 0b010);
digitalWrite(leds, 0b001);

Or if you're still absolutely set on accessing everything by strings, you can do:

led = function (n) { return eval("LED"+n); }

Note that because Espruino executes from source, there isn't much overhead to running eval

Hope that helps...