/* 
Modified on Nov 28, 2020
Modified by MehranMaleki from Arduino Examples
Home
*/


//Mux control pins
#define s0 8
#define s1 9
#define s2 10
#define s3 11
const uint8_t controlPins[] = { 8, 9, 10, 11 };

//Mux in "SIG" pin
#define SIG_Pin A0
#define Test_Pin A1


void setup(){
  pinMode(s0, OUTPUT); 
  pinMode(s1, OUTPUT); 
  pinMode(s2, OUTPUT); 
  pinMode(s3, OUTPUT); 

  digitalWrite(s0, LOW);
  digitalWrite(s1, LOW);
  digitalWrite(s2, LOW);
  digitalWrite(s3, LOW);

  Serial.begin(9600);

  analogReference(DEFAULT);
}


void loop(){

  //Loop through and read all 16 values
  for(int i = 0; i < 16; i ++){
    Serial.print("Value at channel ");
    Serial.print(i);
    Serial.print("is : ");
    Serial.println(readMux(i));
    Serial.println(analogRead(Test_Pin));
    delay(1000);
  }

}


float readMux(int channel)
{
  for(int i = 0; i < 4; i ++)
  {
    digitalWrite(controlPins[i], channel >> i & 1);
  }
  delay(10);
  return analogRead(SIG_Pin);
}