Arduino code for ADS1115

//If you found my video helpful, please SUBSCRIBE:  https://www.youtube.com/channel/UCKp1MzuAceJnDqAvsZl_46g
//The code belongs to the following tutorial videos:
//Part 1: https://youtu.be/imcAITmccLQ
//Part 2: https://youtu.be/2JsQ76EohDE


/*PINS:
 * SDA: A4
 * SCL: A5
 * ADR: GND
 */

#include <Wire.h>
#include <Adafruit_ADS1015.h>
Adafruit_ADS1115 ads;

//-------Variables-------------
int16_t channel_1, channel_2;

float voltage_1, voltage_2;

float distance_1, distance_2;

float percentage_1, percentage_2;

//-----------------------------

void setup() {

  Serial.begin(115200);

  //----Set default------
  ads.setSPS(DR_128SPS); //Sampling speed 128 SPS
  ads.setGain(GAIN_TWO); //PGA settings +/- 2.048 V

  ads.begin();
  //------------------------------------------------------

  Serial.println("ADS1115 linear potmeter");

}

void loop()
{
 readPotmeter_Diff();
 //readPotmeter_Sing();
 delay(1000);

}

void readPotmeter_Diff()
{
  channel_1 = ads.readADC_Differential_0_1(); //A0 + A1
  Serial.print("D= "); Serial.println(channel_1);
  channel_2 = ads.readADC_Differential_2_3(); //A2 + A3

  percentage_1 = (channel_1 / 327.68);

  Serial.print("p= ");  Serial.print(percentage_1,3); Serial.println(" %");

  voltage_1 = (channel_1 * 0.0625)/1000;
  Serial.print("U= "); Serial.print(voltage_1,6); Serial.println(" V");
  voltage_2 = (channel_2 * 0.0625)/1000;

  distance_1 = 0;

  distance_2 = 0;

}

void readPotmeter_Sing()
{
  channel_1 = ads.readADC_SingleEnded(0); //A0
  Serial.println(channel_1);
  channel_2 = ads.readADC_SingleEnded(1); //A1

  percentage_1 = 100 * (channel_1 / 32768);

  Serial.println(percentage_1, 2);

  voltage_1 = (channel_1 * 0.125)/1000;
  Serial.println(voltage_1,6);
  voltage_2 = (channel_2 * 0.125)/1000;

  distance_1 = 0;

  distance_2 = 0;

}