pxt-calliope/docs/reference.md

Reference

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basic.showString("Hello!");
input.onButtonPressed(Button.A, () => {});
led.plot(0,0);
radio.sendNumber(0);
music.playTone(music.noteFrequency(Note.C), music.beat(BeatFraction.Whole));
game.createSprite(2,2);
pins.digitalReadPin(DigitalPin.P0);
serial.writeLine("Hello!");
control.inBackground(() => {});

Language

@section full

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Loops

for

for(let i = 0;i<5;i++) {}

repeat

while

while(true) {}

forever

basic.forever(() => {})

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Logic

if

if(false) {
}

Boolean values: true; false

true
false

Boolean binary operators: and (conjunction); or (disjunction)

true && false;
true || false;

Boolean negation operator

!true

Comparison operators (=, !=, <, >, <=, >=)

0 == 0;
1 !- 0;
0 < 1;
1 > 0;
0 <= 1;
1 >= 0;

Variables

Assign (set) a variable's value

let x = 0;

Get a variable's value

let x = 0;
x;

Change a variable's value

let x = 0;
x+=1;

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Math

Numeric values: 0, 1, 2, ...

0;
1;
2;

Arithmetic binary operation (+, -, *, /)

0+1;
0-1;
1*2;
3/4;

Absolute value

Math.abs(-5);

Minimum/maximum of two values

Math.min(0, 1);
Math.max(0, 1);

Random value

Math.random(5);

Comments

comment

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