HX711 Class Reference

#include <HX711-SOLDERED.h>

Inherits EasyC.

Public Member Functions
	HX711 ()
	HX711 easyC constructor.
virtual	~HX711 ()
	HX711 default destructor.
	HX711 (uint8_t pin_dout, uint8_t pin_sck)
	HX711 native constructor.
void	waitUntilReady ()
	Wait until the sensor is ready, this is a blocking function.
long	getRawReading ()
	Get raw reading from the HX711. Works for both native and easyC.
long	getAveragedReading (uint8_t numReadings=1)
	Make a number of readings and get the average of them.
double	getOffsettedReading (uint8_t numReadings=1)
	Get an averaged reading minus the offset (set by setOffset)
double	getReadingInUnits (uint8_t numReadings=1)
	Get the reading in set units. See readInUnits.ino example for more info.
void	setZero ()
	Set the 'Zero' value (offset) of the load cell, used for calibration. While calling this function, don't put any weight on the load cell!
void	setGain (uint8_t gain)
	Set the gain of the sensor. For both native and easyC.
float	getGain ()
	Get the set gain value, in case you need it.
void	setScale (float scale)
	Set the scale applied to getReadingInUnits. See readInUnits.ino for more info!
float	getScale ()
	Get the set scale value, in case you need it.
void	setOffset (float offset)
	Set the offset applied to getOffsettedReading.
float	getOffset ()
	Get the set offset value, in case you need it.
void	setDeepSleep (bool sleep)
	Put the HX711 in deep sleep (turn it off). Works for both easyC and native.
Public Member Functions inherited from EasyC
	EasyC ()
	Main constructor for easyC version.
void	begin ()
	Initializes sensors on native or easyC on default address.
void	begin (uint8_t _address)
	Initializes sensors on supplied i2c address.
int	sendAddress (char regAddr)
	Private function to send a single byte to sensor.
int	readData (char a[], int n)
	Private function to read n bytes over i2c.
int	readRegister (char regAddr, char a[], size_t n)
	Private function to send over i2c and then read n bytes.
int	sendData (const uint8_t *a, int n)
	Private function to write n bytes over i2c.

Protected Member Functions
void	initializeNative ()
	HX711 native initialization.

Private Member Functions
uint8_t	readRegister ()
	Read a data on the HX711 by pulsing the clock, used for getRawReading.

Private Attributes
int	_pin_dout
int	_pin_sck
uint8_t	_gain = GAIN_128
float	_scale = 1.0
float	_offset = 0.0
uint32_t	_zeroConstant = 0

Additional Inherited Members
Public Attributes inherited from EasyC
int	native = 0
bool	beginDone = 0
int	err
char	address
const char	defaultAddress = 0x30

Constructor & Destructor Documentation

HX711() [1/2]

HX711::HX711

(

)

HX711 easyC constructor.

~HX711()

HX711::~HX711 ( )

virtual

HX711 default destructor.

HX711() [2/2]

HX711::HX711	(	uint8_t	pin_dout,
		uint8_t	pin_sck )

HX711 native constructor.

Parameters

int	dout pin connected to hx711 dout pin
int	pd_sck pin connected to hx711 pd_sck pin

Member Function Documentation

getAveragedReading()

long HX711::getAveragedReading

(

uint8_t

numReadings = 1

)

Make a number of readings and get the average of them.

Parameters

uint8_t

numReadings The number of readings to be done to average from

Returns

long of the averaged raw reading

getGain()

float HX711::getGain

(

)

Get the set gain value, in case you need it.

Returns

float of the set gain

getOffset()

float HX711::getOffset

(

)

Get the set offset value, in case you need it.

Returns

float of the set offset

getOffsettedReading()

double HX711::getOffsettedReading

(

uint8_t

numReadings = 1

)

Get an averaged reading minus the offset (set by setOffset)

Parameters

uint8_t

numReadings The number of readings to be done to average from

Returns

double of the averaged and offsetted raw reading

getRawReading()

long HX711::getRawReading

(

)

Get raw reading from the HX711. Works for both native and easyC.

Note

Disables interrupts for a very short period of time

Returns

long of the raw reading

getReadingInUnits()

double HX711::getReadingInUnits

(

uint8_t

numReadings = 1

)

Get the reading in set units. See readInUnits.ino example for more info.

Parameters

uint8_t

numReadings The number of readings to be done to average from

Returns

double of the reading in set units

getScale()

float HX711::getScale

(

)

Get the set scale value, in case you need it.

Returns

float of the set scale

initializeNative()

void HX711::initializeNative ( )

protectedvirtual

HX711 native initialization.

Implements EasyC.

readRegister()

uint8_t HX711::readRegister ( )

private

Read a data on the HX711 by pulsing the clock, used for getRawReading.

Returns

uint8_t of the value read from HX711

setDeepSleep()

void HX711::setDeepSleep

(

bool

sleep

)

Put the HX711 in deep sleep (turn it off). Works for both easyC and native.

Parameters

bool	sleep 'True' puts the device to sleep, 'False' turns it off.

Returns

none

setGain()

void HX711::setGain

(

uint8_t

gain

)

Set the gain of the sensor. For both native and easyC.

Parameters

uint8_t

gain Can either be GAIN_128, GAIN_64, GAIN_32

Returns

none

setOffset()

void HX711::setOffset

(

float

offset

)

Set the offset applied to getOffsettedReading.

Parameters

float

offset The offset to set

Returns

none

setScale()

void HX711::setScale

(

float

scale

)

Set the scale applied to getReadingInUnits. See readInUnits.ino for more info!

Parameters

float

scale The scale to set

Returns

none

setZero()

void HX711::setZero

(

)

Set the 'Zero' value (offset) of the load cell, used for calibration. While calling this function, don't put any weight on the load cell!

Returns

none

waitUntilReady()

void HX711::waitUntilReady

(

)

Wait until the sensor is ready, this is a blocking function.

Returns

none

Member Data Documentation

_gain

uint8_t HX711::_gain = GAIN_128

private

_offset

float HX711::_offset = 0.0

private

_pin_dout

int HX711::_pin_dout

private

_pin_sck

int HX711::_pin_sck

private

_scale

float HX711::_scale = 1.0

private

_zeroConstant

uint32_t HX711::_zeroConstant = 0

private

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The documentation for this class was generated from the following files:

• HX711-SOLDERED.h
• HX711-SOLDERED.cpp