Detailed Description

ID: ADS1115
Name: ADS1115 ADC
Category: electric
Manufacturer: ti adafruit
Connection: i2c
Link: http://www.ti.com/lit/ds/symlink/ads1115.pdf

The ADS1113, ADS1114, and ADS1115 are precision analog-to-digital converters (ADCs) with 16 bits of resolution offered in an ultra-small, leadless QFN-10 package or an MSOP-10 package. The ADS1113/4/5 are designed with precision, power, and ease of implementation in mind. The ADS1113/4/5 feature an onboard reference and oscillator. Data is transferred via an I2C-compatible serial interface; four I2C slave addresses can be selected. The ADS1113/4/5 operate from a single power supply ranging from 2.0V to 5.5V. The ADS1113/4/5 can perform conversions at rates up to 860 samples per second (SPS). An onboard PGA is available on the ADS1114 and ADS1115 that offers input ranges from the supply to as low as ±256mV, allowing both large and small signals to be measured with high resolution. The ADS1115 also features an input multiplexer (MUX) that provides two differential or four single-ended inputs. The ADS1113/4/5 operate either in continuous conversion mode or a single-shot mode that automatically powers down after a conversion and greatly reduces current consumption during idle periods. The ADS1113/4/5 are specified from –40°C to +125°C.

Tested with DIYMall ADS1115 board. Also available from Adafruit: https://www.adafruit.com/products/1085

Public Types
enum	ADSDATARATE { SPS_8 = ADS1115_DR_8SPS, SPS_16 = ADS1115_DR_16SPS, SPS_32 = ADS1115_DR_32SPS, SPS_64 = ADS1115_DR_64SPS, SPS_128 = ADS1115_DR_128SPS, SPS_250 = ADS1115_DR_250SPS, SPS_475 = ADS1115_DR_475SPS, SPS_860 = ADS1115_DR_860SPS }

typedef enum upm::ADS1115::ADSDATARATE	ADSDATARATE

Public Types inherited from ADS1X15
enum	ADSGAIN { GAIN_TWOTHIRDS = ADS1X15_PGA_6_144V, GAIN_ONE = ADS1X15_PGA_4_096V, GAIN_TWO = ADS1X15_PGA_2_048V, GAIN_FOUR = ADS1X15_PGA_1_024V, GAIN_EIGHT = ADS1X15_PGA_0_512V, GAIN_SIXTEEN = ADS1X15_PGA_0_256V }
	uint16_t enum containing values for setting gain for ADS1X15 devices.

enum	ADSMUXMODE { DIFF_0_1 = ADS1X15_MUX_DIFF_0_1, DIFF_0_3 = ADS1X15_MUX_DIFF_0_3, DIFF_1_3 = ADS1X15_MUX_DIFF_1_3, DIFF_2_3 = ADS1X15_MUX_DIFF_2_3, SINGLE_0 = ADS1X15_MUX_SINGLE_0, SINGLE_1 = ADS1X15_MUX_SINGLE_1, SINGLE_2 = ADS1X15_MUX_SINGLE_2, SINGLE_3 = ADS1X15_MUX_SINGLE_3 }
	uint16_t enum containing values used for selecting ADS1X15 read operations.

enum	ADSCOMP { CQUE_1CONV = 0x0000, CQUE_2CONV = 0x0001, CQUE_4CONV = 0x0002, CQUE_NONE = 0x0003 }
	uint16_t enum containing values for setting ADS1X15 comparator queue modes.

enum	ADSTHRESH { THRESH_LOW = ADS1X15_REG_POINTER_LOWTHRESH, THRESH_HIGH = ADS1X15_REG_POINTER_HITHRESH, CONVERSION_RDY = 0x04, THRESH_DEFAULT = 0x05 }
	uint8_t enum containing register addresses used for setting HI and LOW threshold values as well as setting conversion ready and set to default.

enum	ADSSAMPLERATE { SPS_DEFAULT = 0x0080 }
	uint16_t enum containing values representing the sample rate of the device. Will be overridden in subclass

typedef enum upm::ADS1X15::ADSGAIN	ADSGAIN

typedef enum upm::ADS1X15::ADSMUXMODE	ADSMUXMODE

typedef enum upm::ADS1X15::ADSCOMP	ADSCOMP

typedef enum upm::ADS1X15::ADSTHRESH	ADSTHRESH

typedef enum upm::ADS1X15::ADSSAMPLERATE	ADSSAMPLERATE

Public Member Functions
	ADS1115 (int bus, uint8_t address=0x48)

	~ADS1115 ()

void	setSPS (ADSDATARATE rate=ADS1115::SPS_128)

Public Member Functions inherited from ADS1X15
	ADS1X15 (int bus, uint8_t address)

virtual	~ADS1X15 ()

std::string	name ()

float	getLastSample (int reg=ADS1X15_REG_POINTER_CONVERT)

float	getSample (ADSMUXMODE mode=ADS1X15::DIFF_0_1)

ADSGAIN	getGain ()

void	setGain (ADSGAIN gain=ADS1X15::GAIN_TWO)

ADSSAMPLERATE	getSPS (void)

virtual void	setSPS (ADSSAMPLERATE rate)

bool	getCompMode (void)

void	setCompMode (bool mode=false)

bool	getCompPol (void)

void	setCompPol (bool mode=false)

bool	getCompLatch (void)

void	setCompLatch (bool mode=false)

ADSCOMP	getCompQue (void)

void	setCompQue (ADSCOMP mode=ADS1X15::CQUE_NONE)

bool	getContinuous (void)

void	setContinuous (bool mode=false)

float	getThresh (ADSTHRESH reg=THRESH_LOW)

void	setThresh (ADSTHRESH reg=THRESH_DEFAULT, float value=0.0)

Protected Member Functions
float	getMultiplier (void)

void	setDelay (void)

Protected Member Functions inherited from ADS1X15
void	getCurrentConfig ()

void	updateConfigRegister (uint16_t update, bool read=false)

uint16_t	swapWord (uint16_t value)

Additional Inherited Members
Protected Attributes inherited from ADS1X15
std::string	m_name

float	m_conversionDelay

uint8_t	m_bitShift

uint16_t	m_config_reg

mraa::I2c *	i2c