Minis » miniArduino » 16 Channel Multiplexer

File *miniSixtenChannelMultiplexer.ino*<pre><code class="cpp">

// mozliwe warianty kanalow

int muxChannel[16][4]={

    {0,0,0,0}, //channel 0 

    {1,0,0,0}, //channel 1 

    {0,1,0,0}, //channel 2 

    {1,1,0,0}, //channel 3 

    {0,0,1,0}, //channel 4 

    {1,0,1,0}, //channel 5 

    {0,1,1,0}, //channel 6 

    {1,1,1,0}, //channel 7 

    {0,0,0,1}, //channel 8 

    {1,0,0,1}, //channel 9 

    {0,1,0,1}, //channel 10 

    {1,1,0,1}, //channel 11 

    {0,0,1,1}, //channel 12 

    {1,0,1,1}, //channel 13 

    {0,1,1,1}, //channel 14

    {1,1,1,1}  //channel 15 

}; 

// mux control pins

int s0 = 4;

int s1 = 5;

int s2 = 6;

int s3 = 7;

// mux "SIG" pin

int SIG_pin = 4;

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);

}

void loop()

{

  // petla czytajaca wszystkie 16 wartosci  

  Serial.println("Value at channel: ");

  for(int i = 0; i < 16; i++)

  {    

    Serial.print(" ch : ");

    Serial.print(i);

    Serial.print(" : ");

    Serial.println(readMux(i));

  }

  delay(1000);

}

int readMux(int channel)

{

  int controlPin[] = {s0, s1, s2, s3};

  // loop po 4 ustawiajacych pinach

  for(int i = 0; i < 4; i++)

  {

    digitalWrite(controlPin[i], muxChannel[channel][i]);

  }

  // czytanie wartosci z SIH pin1

  int val = analogRead(SIG_pin);

  return val;

}

</code></pre>