IO

Digital Analog and Advanced I/O. More...

Functions
void	tone (uint8_t _pin, unsigned int frequency)
	Generates a square wave of the specified frequency (and 50% duty cycle) on a pin. More...
void	noTone (uint8_t _pin)
	Stops the generation of a square wave triggered by tone(). More...
void	pinMode (uint32_t ulPin, uint32_t ulMode)
void	digitalWrite (uint32_t ulPin, uint32_t ulVal)
int	digitalRead (uint32_t ulPin)
int	analogRead (unsigned char pin)
	Reads the value from the specified analog pin. More...

Detailed Description

Digital Analog and Advanced I/O.

Parameters

ulPin	The number of the pin whose mode you wish to set
ulMode	Either INPUT or OUTPUT

Function Documentation

analogRead()

int analogRead

(

unsigned char

pin

)

Reads the value from the specified analog pin.

Parameters

pin	the number of the analog input pin to read from

Return values

average

int (8192 -> 16384, look up for example to learn how to change it to voltage)

noTone()

void noTone

(

uint8_t

_pin

)

Stops the generation of a square wave triggered by tone().

Parameters

[in]

_pin

gpio pin

Returns

none

Note

none

tone()

void tone	(	uint8_t	_pin,
		unsigned int	frequency
	)

Generates a square wave of the specified frequency (and 50% duty cycle) on a pin.

Parameters

[in]	_pin	gpio pin
[in]	frequency	the frequency of the tone in hertz(1 to 156250)

Returns

none

Note

none