/Users/fmalpartida/development/ardWorkspace/LiquidCrystal_I2C/LiquiCrystal_I2C/FastIO.cpp File Reference

#include "FastIO.h"

Go to the source code of this file.

Functions
int	fio_digitalRead (fio_register pinRegister, uint8_t pinBit)
void	fio_digitalWrite (fio_register pinRegister, uint8_t pinBit, uint8_t value)
uint8_t	fio_pinToBit (uint8_t pin)
fio_register	fio_pinToInputRegister (uint8_t pin)
fio_register	fio_pinToOutputRegister (uint8_t pin, uint8_t initial_state)
void	fio_shiftOut (fio_register dataRegister, uint8_t dataBit, fio_register clockRegister, uint8_t clockBit)
void	fio_shiftOut (fio_register dataRegister, fio_bit dataBit, fio_register clockRegister, fio_bit clockBit, uint8_t value, uint8_t bitOrder)
void	fio_shiftOut1 (uint8_t pin, uint8_t value, boolean noLatch)
void	fio_shiftOut1 (fio_register shift1Register, fio_bit shift1Bit, uint8_t value, boolean noLatch)
void	fio_shiftOut1_init (fio_register shift1Register, fio_bit shift1Bit)
void	fio_shiftOut1_init (uint8_t pin)

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Function Documentation

int fio_digitalRead	(	fio_register	pinRegister,
		fio_bit	pinBit
	)

direct digital read without any checks falls back to normal digitalRead if fast io is disabled

Parameters:

pinRegister[in]	Register - ignored if fast io is disabled
pinBit[in]	Bit - Pin if fast io is disabled

Returns:

Value read from pin

Definition at line 87 of file FastIO.cpp.

void fio_digitalWrite	(	fio_register	pinRegister,
		fio_bit	pinBit,
		uint8_t	value
	)

direct digital write without any checks falls back to normal digitalWrite if fast io is disabled

Parameters:

pinRegister[in]	Register - ignored if fast digital write is disabled
pinBit[in]	Bit - Pin if fast digital write is disabled
value[in]	desired output

Definition at line 71 of file FastIO.cpp.

uint8_t fio_pinToBit

(

uint8_t

pin

)

Find the bit which belongs to specified pin if fast digitalWrite is disabled this function returns the pin

Parameters:

pin[in]

Number of a digital pin

Returns:

Bit

Definition at line 61 of file FastIO.cpp.

fio_register fio_pinToInputRegister

(

uint8_t

pin

)

Get the input register for specified pin. if fast digital IO is disabled this function returns NULL

Parameters:

pin[in]

Number of a digital pin

Returns:

Register

Definition at line 49 of file FastIO.cpp.

fio_register fio_pinToOutputRegister	(	uint8_t	pin,
		uint8_t	initial_state = LOW
	)

Get the output register for specified pin. if fast digital IO is disabled this function returns NULL

Parameters:

pin[in]

Number of a digital pin

Returns:

Register

Definition at line 33 of file FastIO.cpp.

void fio_shiftOut	(	fio_register	dataRegister,
		fio_bit	dataBit,
		fio_register	clockRegister,
		fio_bit	clockBit
	)

faster shift out clear using fast digital write falls back to normal digitalWrite if fastio is disabled

Parameters:

dataRegister[in]	Register of data pin - ignored if fast digital write is disabled
dataBit[in]	Bit of data pin - Pin if fast digital write is disabled
clockRegister[in]	Register of data pin - ignored if fast digital write is disabled
clockBit[in]	Bit of data pin - Pin if fast digital write is disabled

Definition at line 126 of file FastIO.cpp.

void fio_shiftOut	(	fio_register	dataRegister,
		fio_bit	dataBit,
		fio_register	clockRegister,
		fio_bit	clockBit,
		uint8_t	value,
		uint8_t	bitOrder
	)

faster shift out using fast digital write falls back to normal digitalWrite if fastio is disabled

Parameters:

dataRegister[in]	Register of data pin - ignored if fast digital write is disabled
dataBit[in]	Bit of data pin - Pin if fast digital write is disabled
clockRegister[in]	Register of data pin - ignored if fast digital write is disabled
clockBit[in]	Bit of data pin - Pin if fast digital write is disabled
bitOrder[in]	bit order

Definition at line 100 of file FastIO.cpp.

void fio_shiftOut1	(	uint8_t	pin,
		uint8_t	value,
		boolean	noLatch = false
	)

one wire shift out protocol needs initialisation (fio_shiftOut1_init)

Parameters:

pin[in]	digital pin
value[in]	value to shift out, last byte is ignored and always shifted out LOW

Definition at line 214 of file FastIO.cpp.

void fio_shiftOut1	(	fio_register	shift1Register,
		fio_bit	shift1Bit,
		uint8_t	value,
		boolean	noLatch = false
	)

one wire shift out protocol needs initialisation (fio_shiftOut1_init)

Parameters:

shift1Register[in]	pins register
shift1Bit[in]	pins bit
value[in]	value to shift out, last byte is ignored and always shifted out LOW

Definition at line 149 of file FastIO.cpp.

void fio_shiftOut1_init	(	fio_register	shift1Register,
		fio_bit	shift1Bit
	)

initializes one wire shift out protocol Puts pin to HIGH state and delays until Capacitors are charged.

Parameters:

shift1Register[in]	pins register
shift1Bit[in]	pins bit

Definition at line 142 of file FastIO.cpp.

void fio_shiftOut1_init

(

uint8_t

pin

)

initializes one wire shift out protocol Puts pin to HIGH state and delays until Capacitors are charged.

Parameters:

pin[in]

digital pin

Definition at line 137 of file FastIO.cpp.