LTC1867.cpp File Reference

Library for LTC1867: 16-Bit 8-Channel 200ksps ADC. More...

Detailed Description

Library for LTC1867: 16-Bit 8-Channel 200ksps ADC.

Definition in file LTC1867.cpp.

Go to the source code of this file.

Functions
void	LTC1867_read (uint8_t cs, uint8_t adc_command, uint16_t *adc_code)
	Reads the ADC and returns 16-bit data. More...
float	LTC1867_unipolar_code_to_voltage (uint16_t adc_code, float LTC1867_lsb, int32_t LTC1867_offset_unipolar_code)
	Calculates the LTC1867 input's unipolar voltage given the binary data and lsb weight. More...
float	LTC1867_bipolar_code_to_voltage (uint16_t adc_code, float LTC1867_lsb, int32_t LTC1867_offset_bipolar_code)
	Calculates the LTC1867 input's bipolar voltage given the two's compliment data and lsb weight. More...
void	LTC1867_cal_voltage (uint16_t zero_unipolar_code, uint16_t zero_bipolar_code, uint16_t fs_code, float zero_voltage, float fs_voltage, float *LTC1867_lsb, int32_t *LTC1867_offset_unipolar_code, int32_t *LTC1867_offset_bipolar_code)
	Calibrate the offset and LSB voltage given two measured offset codes, and a full-scale voltage with the corresponding code. More...

Function Documentation

LTC1867_bipolar_code_to_voltage()

float LTC1867_bipolar_code_to_voltage	(	uint16_t	adc_code,
		float	LTC1867_lsb,
		int32_t	LTC1867_offset_bipolar_code
	)

Calculates the LTC1867 input's bipolar voltage given the two's compliment data and lsb weight.

Returns

Floating point voltage

Parameters

adc_code	Raw ADC code
LTC1867_lsb	LSB value (volts)
LTC1867_offset_bipolar_code	Offset code

Definition at line 92 of file LTC1867.cpp.

LTC1867_cal_voltage()

void LTC1867_cal_voltage	(	uint16_t	zero_unipolar_code,
		uint16_t	zero_bipolar_code,
		uint16_t	fs_code,
		float	zero_voltage,
		float	fs_voltage,
		float *	LTC1867_lsb,
		int32_t *	LTC1867_offset_unipolar_code,
		int32_t *	LTC1867_offset_bipolar_code
	)

Calibrate the offset and LSB voltage given two measured offset codes, and a full-scale voltage with the corresponding code.

Returns

Void

Parameters

zero_unipolar_code	Code from a unipolar zero reading
zero_bipolar_code	Code from a bipolar zero reading
fs_code	full-scale code
zero_voltage	Measured zero voltage
fs_voltage	Measured full-scale voltage
LTC1867_lsb	Return LSB value (volts)
LTC1867_offset_unipolar_code	Return Unipolar Offset code, in floating point
LTC1867_offset_bipolar_code	Return Bipolar Offset code, in floating point

Definition at line 105 of file LTC1867.cpp.

LTC1867_read()

void LTC1867_read	(	uint8_t	cs,
		uint8_t	adc_command,
		uint16_t *	adc_code
	)

Reads the ADC and returns 16-bit data.

Returns

void

Parameters

cs	Chip Select Pin
adc_command	Channel address, config bits ORed together
adc_code	Returns code read from ADC (from previous conversion)

Definition at line 78 of file LTC1867.cpp.

LTC1867_unipolar_code_to_voltage()

float LTC1867_unipolar_code_to_voltage	(	uint16_t	adc_code,
		float	LTC1867_lsb,
		int32_t	LTC1867_offset_unipolar_code
	)

Calculates the LTC1867 input's unipolar voltage given the binary data and lsb weight.

Returns

Floating point voltage

Parameters

adc_code	Raw ADC code
LTC1867_lsb	LSB value (volts)
LTC1867_offset_unipolar_code	Offset code

Definition at line 84 of file LTC1867.cpp.