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Arduino Language Reference

SKETCH

Function

loop()

setup()

CONTROL STRUCTURE

break

continue

do while

if else

for

goto

if

return

switch...case

while

FURTHER SYNTAX

/* */ (block comment)

{} (curly braces)

#define (define)

#include (include)

; (semicolon)

// (single line comment)

DATA TYPES

array

bool

boolean

byte

char

double

float

int

long

short

size_t

string

String()

unsigned char

unsigned int

unsigned long

Variable

void

word

CONSTANTS

constants

Floating Point Constants

Integer Constants

VARIABLE SCOPE & QUALIFIERS

const

scope

static

volatile

DIGITAL IO

digitalRead()

digitalWrite()

pinMode()

ANALOG IO

analogRead()

analogReference()

analogWrite()

ADVANCED IO

noTone()

pulseIn()

pulseInLong()

shiftIn()

shiftOut()

tone()

SERIAL

Serial

Serial.available()

Serial.availableForWrite()

Serial.begin()

Serial.end()

Serial.find()

Serial.findUntil()

Serial.flush()

Serial.getTimeout()

if(Serial)

Serial.parseFloat()

Serial.parseInt()

Serial.peek()

Serial.print()

Serial.println()

Serial.read()

Serial.readBytes()

Serial.readBytesUntil()

Serial.readString()

Serial.readStringUntil()

serialEvent()

Serial.setTimeout()

Serial.write()

STREAM

Stream

Stream.available()

Stream.find()

Stream.findUntil()

Stream.flush()

Stream.getTimeout()

Stream.parseFloat()

Stream.parseInt()

Stream.peek()

Stream.read()

Stream.readBytes()

Stream.readBytesUntil()

Stream.readString()

Stream.readStringUntil()

Stream.setTimeout()

STRING FUNCTIONS

String.c_str()

String.charAt()

String.compareTo()

String.concat()

String.endsWith()

String.equals()

String.equalsIgnoreCase()

String.getBytes()

String.indexOf()

String.lastIndexOf()

String.length()

String.remove()

String.replace()

String.reserve()

String.setCharAt()

String.startsWith()

String.substring()

String.toCharArray()

String.toDouble()

String.toFloat()

String.toInt()

String.toLowerCase()

String.toUpperCase()

String.trim()

STRING OPERATORS

String += (append)

String == (comparison)

String + (concatenation)

String != (different from)

String [] (element access)

String > (greater than)

String >= (greater than or equal to)

String < (less than)

String <= (less than or equal to)

KEYBOARD

Keyboard

Keyboard.begin()

Keyboard.end()

Keyboard Modifiers

Keyboard.press()

Keyboard.print()

Keyboard.println()

Keyboard.release()

Keyboard.releaseAll()

Keyboard.write()

MOUSE

Mouse

Mouse.begin()

Mouse.click()

Mouse.end()

Mouse.isPressed()

Mouse.move()

Mouse.press()

Mouse.release()

TIME

delay()

delayMicroseconds()

micros()

millis()

MATH

abs()

constrain()

map()

max()

min()

pow()

sq()

sqrt()

CHARACTERS

isAlpha()

isAlphaNumeric()

isAscii()

isControl()

isDigit()

isGraph()

isHexadecimalDigit()

isLowerCase()

isPrintable()

isPunct()

isSpace()

isUpperCase()

isWhitespace()

BITS AND BYTES

bit()

bitClear()

bitRead()

bitSet()

bitWrite()

highByte()

lowByte()

ARITHMETIC OPERATORS

+ (addition)

= (assignment operator)

/ (division)

* (multiplication)

% (remainder)

- (subtraction)

BITWISE OPERATORS

<< (bitshift left)

>> (bitshift right)

& (bitwise and)

~ (bitwise not)

| (bitwise or)

^ (bitwise xor)

BOOLEAN OPERATORS

&& (logical and)

! (logical not)

|| (logical or)

COMPARISON OPERATORS

== (equal to)

> (greater than)

>= (greater than or equal to)

< (less than)

<= (less than or equal to)

!= (not equal to)

COMPOUND OPERATORS

+= (compound addition)

&= (compound bitwise and)

|= (compound bitwise or)

^= (compound bitwise xor)

/= (compound division)

*= (compound multiplication)

%= (compound remainder)

-= (compound subtraction)

-- (decrement)

++ (increment)

CONVERSION

byte()

char()

float()

int()

long()

(unsigned int)

(unsigned long)

word()

RANDOM NUMBERS

random()

randomSeed()

TRIGONOMETRY

cos()

sin()

tan()

EXTERNAL INTERRUPTS

attachInterrupt()

detachInterrupt()

INTERRUPTS

interrupts()

noInterrupts()

UTILITIES

PROGMEM

sizeof()

POINTER ACCESS OPERATORS

* (dereference operator)

& (reference operator)

ZERO, DUE, MKR FAMILY

analogReadResolution()

analogWriteResolution()

DISCLOSURE
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The Arduino Reference text is licensed under a Creative Commons Attribution-Share Alike 3.0 License. The content is modified based on Official Arduino References by: adding more example codes and output, adding more notes and warning, rewriting some parts, and re-formating
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