-구조

. (dot)
#include
setup()
void
/* */ (multiline comment)
false
true
// (comment)
, (comma)
{} (curly braces)
CHANGE
FALLING
HIGH
INPUT
loop()
LOW
LSBFIRST
MSBFIRST
null
OUTPUT
RISING
; (semicolon)
[] (array access)
() (parentheses)
return
= (assign)

- 데이터 형

Primitive
int
unsigned int
long
unsigned long
char
unsigned char
float
double
boolean
byte
array

Composite - 문자열
String

Conversion - 변환
boolean()
byte()
char()
int()
long()
float()

Bit, byte and word handling
bit()
bitRead()
bitWrite()
lowByte()
highByte()
makeWord()

- 제어

Relational Operators - 관계연산자
< (less than)
>= (greater than or equal to)
== (equality)
<= (less than or equal to)
> (greater than)
!= (inequality)

Iteration - 반복문 제어
for()
while()

Conditionals - 조건
break
switch()
case
else
if()

Logical operators - 논리 연산자
|| (logical OR)
&& (logical AND)
! (logical NOT)

Bitwise operators - 비트 논리 연산
| (bitwise OR)
|= (bitwise OR and assign)
& (bitwise AND)
&= (bitwise AND and assign)
^ (bitwise XOR)
~ (bitwise one´s complement)
<< (bitwise bit shift left)
>> (bitwise bit shift right)

-입출력

Pin Digital I/O - 핀 디지털 입출력
pinMode()
digitalRead()
digitalWrite()

Port Digital I/O - 포트 디지털 입출력
portMode()
portRead()
portWrite()

Pin Analog Input -핀 아나로그 입력
analogRead()

Pin PWM (Analog) Output - 아나로그 출력

analogWrite()

Time - 시간 지연
delay()
delayMicroseconds()
millis()

Pulse Input (polled) - 펄스 입력
pulseIn()

Pulse output generation- 펄스 출력발생
pulseOut()
pulseRunning()
pulseStop()

Advanced Output
shiftOut()

External Interrupts - 외부 인터럽트
attachInterrupt()
detachInterrupt()
interruptMode()

Interrupts - 인터럽트
interrupts()
noInterrupts()

-수 연산

Operators - 연산자
-= (subtract assign)
+ (addition)
- (minus)
% (modulo)
+= (add assign)
/ (divide)
* (multiply)
++ (increment)
-- (decrement)

Calculation - 연산
min()
max()
round()
pow()
floor()
sqrt()
abs()
constrain()
sq()
ceil()
map()

Trigonometry -삼각함수
tan()
sin()
cos()
degrees()
atan2()
radians()

Random
randomSeed()
random()

-상수

HALF_PI ( 1.57079... )
TWO_PI ( 6.28318... )
PI ( 3.14159... )