LM75B Class Reference

#include <TempSensor.h>

Inheritance diagram for LM75B:

Public Types
enum	reg_num { Temp , Conf , Thyst , Tos }
Public Types inherited from TempSensor
enum	mode { COMPARATOR , INTERRUPT }

Public Member Functions
	LM75B (uint8_t i2c_address=(0x90 > > 1))
	LM75B (TwoWire &wire, uint8_t i2c_address=(0x90 > > 1))
virtual	~LM75B ()
virtual float	temp (void) override
virtual void	thresholds (float v0, float v1)
virtual void	os_mode (mode flag)
virtual float	read (void)
bool	ping (void)
int	reg_w (uint8_t reg_adr, const uint8_t *data, uint16_t size)
int	reg_w (uint8_t reg_adr, uint8_t data)
int	reg_r (uint8_t reg_adr, uint8_t *data, uint16_t size)
uint8_t	reg_r (uint8_t reg_adr)
void	write_r8 (uint8_t reg, uint8_t val)
void	write_r16 (uint8_t reg, uint16_t val)
uint8_t	read_r8 (uint8_t reg)
uint16_t	read_r16 (uint8_t reg)
void	bit_op8 (uint8_t reg, uint8_t mask, uint8_t value)
void	bit_op16 (uint8_t reg, uint16_t mask, uint16_t value)
Public Member Functions inherited from TempSensor
	TempSensor (uint8_t i2c_address)
	TempSensor (TwoWire &wire, uint8_t i2c_address)
virtual	~TempSensor ()

Detailed Description

LM75B class

About LM75B: https://www.nxp.com/products/sensors/i3c-ic-digital-temp-sensors/digital-temperature-sensor-and-thermal-watchdog:LM75B?_gl=1*kd25ib*_ga*NTA5NDE1NDA0LjE2NzgzNDYyNzA.*_ga_WM5LE0KMSH*MTY4MjEyMjc1OC42Mi4wLjE2ODIxMjI3NTguMC4wLjA.

Definition at line 59 of file TempSensor.h.

Member Enumeration Documentation

reg_num

enum LM75B::reg_num

Name of the LM75B registers

Enumerator
Temp	Temp register
Conf	Conf register
Thyst	Thyst register
Tos	Tos registe

Definition at line 63 of file TempSensor.h.

Constructor & Destructor Documentation

LM75B() [1/2]

LM75B::LM75B

(

uint8_t

i2c_address = (0x90 >> 1)

)

Create a LM75B instance connected to specified I2C pins with specified address

Parameters

i2c_address

I2C-bus address (default: (0x90>>1))

Definition at line 16 of file TempSensor.cpp.

LM75B() [2/2]

LM75B::LM75B	(	TwoWire &	wire,
		uint8_t	i2c_address = (0x90 >> 1) )

Create a LM75B instance connected to specified I2C pins with specified address

Parameters

wire	TwoWire instance
i2c_address	I2C-bus address (default: (0x90>>1))

Definition at line 17 of file TempSensor.cpp.

~LM75B()

LM75B::~LM75B ( )

virtual

Destructor of LM75B

Definition at line 18 of file TempSensor.cpp.

Member Function Documentation

bit_op16()

void LM75B::bit_op16	(	uint8_t	reg,
		uint16_t	mask,
		uint16_t	value )

bit_op8()

void LM75B::bit_op8	(	uint8_t	reg,
		uint8_t	mask,
		uint8_t	value )

Register overwriting with bit-mask

Register can be updated by bit level

Parameters

reg	register index/address/pointer
mask	bit-mask to protect overwriting
value	value to overwrite

Referenced by os_mode().

os_mode()

void LM75B::os_mode ( mode flag )

virtual

Set OS operation mode

Parameters

flag	use LM75B::COMPARATOR or LM75B::INTERRUPT values

Reimplemented in PCT2075, P3T1755, P3T1035, P3T2030, and P3T1085.

Definition at line 34 of file TempSensor.cpp.

ping()

bool LM75B::ping

(

void

)

Ping the device

Returns

true when ACK

read()

virtual float LM75B::read ( void )

virtual

Get temperature value in degree Celsius [°C]

This method simply calls "temp()" method

Returns

temperature value in degree Celsius [°C]

Reimplemented from TempSensor.

Reimplemented in PCT2075, P3T1755, P3T1085, P3T1035, and P3T2030.

read_r16()

uint16_t LM75B::read_r16

(

uint8_t

reg

)

Register read, 16 bit

This 16 bit access may ot be common but it's useful for sensor devices

Parameters

reg	register index/address/pointer

Returns

data value

Referenced by temp().

read_r8()

uint8_t LM75B::read_r8

(

uint8_t

reg

)

Register read, 8 bit

Parameters

reg	register index/address/pointer

Returns

data value

reg_r() [1/2]

uint8_t LM75B::reg_r

(

uint8_t

reg_adr

)

Single register read

Parameters

reg	register index/address/pointer

Returns

read data

reg_r() [2/2]

int LM75B::reg_r	(	uint8_t	reg_adr,
		uint8_t *	data,
		uint16_t	size )

Multiple register read

Parameters

reg	register index/address/pointer
data	pointer to data buffer
size	data size

Returns

transferred data size

reg_w() [1/2]

int LM75B::reg_w	(	uint8_t	reg_adr,
		const uint8_t *	data,
		uint16_t	size )

Multiple register write

Parameters

reg	register index/address/pointer
data	pointer to data buffer
size	data size

Returns

transferred data size

reg_w() [2/2]

int LM75B::reg_w	(	uint8_t	reg_adr,
		uint8_t	data )

Single register write

Parameters

reg	register index/address/pointer
data	pointer to data buffer
size	data size

Returns

transferred data size

temp()

float LM75B::temp ( void )

overridevirtual

Get temperature value in degree Celsius [°C]

Returns

temperature value in degree Celsius [°C]

Implements TempSensor.

Reimplemented in PCT2075, P3T1755, P3T1085, P3T1035, and P3T2030.

Definition at line 20 of file TempSensor.cpp.

thresholds()

void LM75B::thresholds ( float v0, float v1 )

virtual

Set Overtemperature shutdown threshold (Tos) and hysteresis (Thyst) in degree Celsius [°C]

This method takes 2 values and higher value will set as the threshold (Tos) and another will be the hysteresis (Thyst)

Parameters

v0	a value in degree Celsius
v1	a value in degree Celsius

Reimplemented in PCT2075, P3T1085, P3T1755, P3T1035, and P3T2030.

Definition at line 25 of file TempSensor.cpp.

write_r16()

void LM75B::write_r16	(	uint8_t	reg,
		uint16_t	val )

Register write, 16 bit

This 16 bit access may ot be common but it's useful for sensor devices

Parameters

reg	register index/address/pointer
val	data value

Referenced by thresholds().

write_r8()

void LM75B::write_r8	(	uint8_t	reg,
		uint8_t	val )

Register write, 8 bit

Parameters

reg	register index/address/pointer
val	data value

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

• TempSensor.h
• TempSensor.cpp