LTC4151.cpp File Reference

Library for LTC4151: High Voltage I2C Current and Voltage Monitor. More...

Detailed Description

Library for LTC4151: High Voltage I2C Current and Voltage Monitor.

Definition in file LTC4151.cpp.

Go to the source code of this file.

Functions
int8_t	LTC4151_write (uint8_t i2c_address, uint8_t adc_command, uint8_t code)
	Write one byte to an LTC4151 register. More...
int8_t	LTC4151_read_12_bits (uint8_t i2c_address, uint8_t adc_command, uint16_t *adc_code)
	Reads a 12-bit value from LTC4151. More...
float	LTC4151_code_to_sense_current (uint16_t adc_code, float resistor, float LTC4151_sense_lsb)
	Calculates the LTC4151 sense current in Amps given "resistor" value in ohms and "LTC4151_sense_lsb" LSB weight in volts. More...
float	LTC4151_code_to_vin_voltage (uint16_t adc_code, float LTC4151_vin_lsb)
	Calculates the LTC4151 V_IN voltage given "LTC_vin_lsb" LSB weight in volts. More...
float	LTC4151_code_to_ADIN_voltage (uint16_t adc_code, float LTC4151_adin_lsb)
	Calculates the LTC4151 ADIN voltage in mV given "LTC4151_adin_lsb" LSB weight in mV. More...

Function Documentation

LTC4151_code_to_ADIN_voltage()

float LTC4151_code_to_ADIN_voltage	(	uint16_t	adc_code,
		float	LTC4151_adin_lsb
	)

Calculates the LTC4151 ADIN voltage in mV given "LTC4151_adin_lsb" LSB weight in mV.

Returns

the ADIN voltage in volts.

Parameters

adc_code	Code read from the adc (from a function such as LTC4151_read_12_bits)
LTC4151_adin_lsb	ADIN voltage LSB weight.

Definition at line 117 of file LTC4151.cpp.

LTC4151_code_to_sense_current()

float LTC4151_code_to_sense_current	(	uint16_t	adc_code,
		float	resistor,
		float	LTC4151_sense_lsb
	)

Calculates the LTC4151 sense current in Amps given "resistor" value in ohms and "LTC4151_sense_lsb" LSB weight in volts.

Returns

Returns the current in Amperes.

Parameters

adc_code	Code read from the adc (from a function such as LTC4151_read_12_bits)
resistor	The sense resistor value
LTC4151_sense_lsb	Current LSB weight.

Definition at line 100 of file LTC4151.cpp.

LTC4151_code_to_vin_voltage()

float LTC4151_code_to_vin_voltage	(	uint16_t	adc_code,
		float	LTC4151_vin_lsb
	)

Calculates the LTC4151 V_IN voltage given "LTC_vin_lsb" LSB weight in volts.

Returns

the V_IN voltage in volts.

Parameters

adc_code	Code read from the adc (from a function such as LTC4151_read_12_bits)
LTC4151_vin_lsb	Voltage LSB weight.

Definition at line 109 of file LTC4151.cpp.

LTC4151_read_12_bits()

int8_t LTC4151_read_12_bits	(	uint8_t	i2c_address,
		uint8_t	adc_command,
		uint16_t *	adc_code
	)

Reads a 12-bit value from LTC4151.

Returns

Returns the state of the acknowledge bit after the I2C address write. 0=acknowledge, 1=no acknowledge.

Parameters

i2c_address	I2C address of the LTC4151. Configured by tying the ADR0 and ADR1 pins high or low. See Table 1 of datasheet.
adc_command	The "command byte" for the LTC4151.
adc_code	Returns 12-bit value read from the adc

Definition at line 83 of file LTC4151.cpp.

LTC4151_write()

int8_t LTC4151_write	(	uint8_t	i2c_address,
		uint8_t	adc_command,
		uint8_t	code
	)

Write one byte to an LTC4151 register.

Returns

Returns the state of the acknowledge bit after the I2C address write. 0=acknowledge, 1=no acknowledge.

Parameters

i2c_address	I2C address of the LTC4151. Configured by tying the ADR0 and ADR1 pins high or low. See Table 1 of datasheet.
adc_command	The "command byte" for the LTC4151.
code	Value that will be written to the register.

Definition at line 73 of file LTC4151.cpp.