Cabinet - Software & Language

The Arduino language is based on C/C++ and supports all standard C constructs and some C++ features. It links against AVR Libc and allows the use of any of its functions; see its user manual for details.

page discussion

Structure

void setup ?()
void loop ?()

Control Structures

Further Syntax

;? (semicolon)
{}? (curly braces)
//? (single line comment)
/* */? (multi-line comment)
#define ?
#include ?

Arithmetic Operators

= (assignment operator)
+ ? (addition)
-? (subtraction)
*? (multiplication)
/? (division)
%? (modulo)

Comparison Operators

==? (equal to)
!=? (not equal to)
<? (less than)
>? (greater than)
<=? (less than or equal to)
>=? (greater than or equal to)

Boolean Operators

&&? (and)
||? (or)
!? (not)

Pointer Access Operators

Bitwise Operators

&? (bitwise and)
|? (bitwise or)
^? (bitwise xor)
~? (bitwise not)
<<? (bitshift left)
>>? (bitshift right)
Port Manipulation ?

Compound Operators

++? (increment)
--? (decrement)
+=? (compound addition)
-=? (compound subtraction)
*=? (compound multiplication)
/=? (compound division)
&=? (compound bitwise and)
|=? (compound bitwise or)

Variables

Constants

Data Types

Variable Scope & Qualifiers

Utilities

sizeof ?() (sizeof operator)

Reference

ASCII chart ?

Functions

Digital I/O

pinMode ?(pin, mode)
digitalWrite ?(pin, value)
int digitalRead ?(pin)

Analog I/O

analogReference ?(type)
int analogRead ?(pin)
analogWrite ?(pin, value) - PWM

Advanced I/O

shiftOut ?(dataPin, clockPin, bitOrder, value)
unsigned long pulseIn(pin, value)

Time

unsigned long millis ?()
delay ?(ms)
delayMicroseconds ?(us)

Math

min ?(x, y)
max ?(x, y)
abs ?(x)
constrain ?(x, a, b)
map ?(value, fromLow, fromHigh, toLow, toHigh)
pow ?(base, exponent)
sqrt ?(x)

Trigonometry

sin ?(rad)
cos ?(rad)
tan ?(rad)

Random Numbers

randomSeed ?(seed)
long random ?(max)
long random ?(min, max)

External Interrupts

attachInterrupt ?(interrupt, function, mode)
detachInterrupt ?(interrupt)

Interrupts

interrupts ?()
noInterrupts ?()

Serial Communication

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