/******************************************************************************
*
* This is a library for the ADS1115 A/D Converter
*
* You'll find several example sketches which should enable you to use the library.
*
* You are free to use it, change it or build on it. In case you like it, it would
* be cool if you give it a star.
*
* If you find bugs, please inform me!
*
* Written by Wolfgang (Wolle) Ewald
* https://wolles-elektronikkiste.de
*
*
******************************************************************************/
#ifndef ADS1115_WE_H_
#define ADS1115_WE_H_
#if (ARDUINO >= 100)
#include "Arduino.h"
#else
#include "WProgram.h"
#endif
#include <Wire.h>
/* registers */
#define ADS1115_CONV_REG 0x00 //Conversion Register
#define ADS1115_CONFIG_REG 0x01 //Configuration Register
#define ADS1115_LO_THRESH_REG 0x02 //Low Threshold Register
#define ADS1115_HI_THRESH_REG 0x03 //High Threshold Register
/* other */
#define ADS1115_REG_FACTOR 32768
#define ADS1115_REG_RESET_VAL 0x8583
typedef enum ADS1115_COMP_QUE {
ADS1115_ASSERT_AFTER_1 = 0x0000,
ADS1115_ASSERT_AFTER_2 = 0x0001,
ADS1115_ASSERT_AFTER_4 = 0x0002,
ADS1115_DISABLE_ALERT = 0x0003
} compQue;
typedef enum ADS1115_LATCH {
ADS1115_LATCH_DISABLED = 0x0000,
ADS1115_LATCH_ENABLED = 0x0004,
} latch;
typedef enum ADS1115_ALERT_POL {
ADS1115_ACT_LOW = 0x0000,
ADS1115_ACT_HIGH = 0x0008
} alertPol;
typedef enum ADS1115_COMP_MODE{
ADS1115_MAX_LIMIT = 0x0000,
ADS1115_WINDOW = 0x0010
} compMode;
typedef enum ADS1115_CONV_RATE{
ADS1115_8_SPS = 0x0000,
ADS1115_16_SPS = 0x0020,
ADS1115_32_SPS = 0x0040,
ADS1115_64_SPS = 0x0050,
ADS1115_128_SPS = 0x0080,
ADS1115_250_SPS = 0x00A0,
ADS1115_475_SPS = 0x00C0,
ADS1115_860_SPS = 0x00E0
} convRate;
typedef enum ADS1115_MEASURE_MODE{
ADS1115_CONTINOUS = 0x0000,
ADS1115_SINGLE = 0x0100
} measureMode;
typedef enum ADS1115_RANGE{
ADS1115_RANGE_6144 = 0x0000,
ADS1115_RANGE_4096 = 0x0200,
ADS1115_RANGE_2048 = 0x0400,
ADS1115_RANGE_1024 = 0x0600,
ADS1115_RANGE_0512 = 0x0800,
ADS1115_RANGE_0256 = 0x0A00,
} range;
typedef enum ADS1115_MUX{
ADS1115_COMP_0_1 = 0x0000,
ADS1115_COMP_0_3 = 0x1000,
ADS1115_COMP_1_3 = 0x2000,
ADS1115_COMP_2_3 = 0x3000,
ADS1115_COMP_0_GND = 0x4000,
ADS1115_COMP_1_GND = 0x5000,
ADS1115_COMP_2_GND = 0x6000,
ADS1115_COMP_3_GND = 0x7000
} mux;
typedef enum ADS1115_STATUS_OR_START{
ADS1115_BUSY = 0x0000,
ADS1115_START_ISREADY = 0x8000
} statusOrStart;
class ADS1115_WE
{
public:
ADS1115_WE(int addr);
ADS1115_WE(); //sets default I2C Address 0x48
void reset();
bool init();
void setAlertPinMode(ADS1115_COMP_QUE mode);
void setAlertLatch(ADS1115_LATCH latch);
void setAlertPol(ADS1115_ALERT_POL polarity);
void setAlertModeAndLimit_V(ADS1115_COMP_MODE mode, float hithres, float lothres);
void setConvRate(ADS1115_CONV_RATE rate);
void setMeasureMode(ADS1115_MEASURE_MODE mode);
void setVoltageRange_mV(ADS1115_RANGE range);
void setCompareChannels(ADS1115_MUX mux);
bool isBusy();
void startSingleMeasurement();
float getResult_V();
float getResult_mV();
void setAlertPinToConversionReady();
void unlatchAlertPin();
private:
uint16_t voltageRange;
ADS1115_MEASURE_MODE deviceMeasureMode;
int i2cAddress;
int16_t calcLimit(float rawLimit);
uint8_t writeRegister(uint8_t reg, uint16_t val);
uint16_t readRegister(uint8_t reg);
};
#endif
