Code syntax

Squirrel Code
1

Is it possible to use such syntax:
function pin2change()
{
signal = hardware.pin2.read() == 0;
}
hardware.pin2.configure(DIGITAL_IN_PULLUP, pin2change);

or

value = First < all ? -1 : 1;

imp is working unstable.

2

All that syntax looks fine to me. What sort of “unstable”? Using syntax that doesn’t exist would cause Squirrel compile-time or run-time errors that you’d see in your browser, and not really “instability”.

Peter

3

@peter I’m not so sure about compiler - practical work show that ALL compilers can accept wrong syntax.
In my case syntax:
function pin2change()
{
a=hardware.pin2.read();
if(a==9){
signal = 0;
}
}
hardware.pin2.configure(DIGITAL_IN_PULLUP, pin2change);
works fine, but mentioned above not always detect “0”.
Thats why I’m asking

4

Sure you’re not getting switch bounce? You may get many pin2change events in quick succession from (eg) a switch attached to pin2.

5

@Hugo It is electronic switch. Probably switch output level LOW is about imp input level LOW. On border can be instability, if the syntax is ok.

6

Without knowing the slew rate, it’s still possible you could get multiple events.

What’s the actual code you’re using? (I’m pretty sure you’re not using the if (a==9) code as obviously that wouldn’t work :slight_smile: )

7

Yes, writing mistake :slight_smile: Of course there must be zero instead 9. I don’t copy-paste piece of code so it can happen…:slight_smile:
Agree about slew rate - imp is very fast controller and can detect multiple events.
So finally I just change to “bouncing contact” standard code and now everything is OK.