/**
*****************RECURSIVEDOG PROJECT_ARDUINO CODE*******************
*
*  Reads a 74LS151 32 inputs digital mux
*
*  Builded on Arduino 0007 Alpha
*
*  copyleft 2007 by Enrique Tomas aka quique.at.recursivedog.org
*
*****************RECURSIVEDOG PROJECT_ARDUINO CODE*******************
*
*********************************************************************
***********************www.recursivedog.org**************************
*
*/
//mux variables
int input = 8;   // digital input to arduino from mux
int strobe=7;   //digital outputs to control mux  inhibidor
int e=6;
int d=5;
int c=4;
int b=3;
int a=2;



// to store the values from mux
int val[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};  

// digital values to control 32 inputs
int e_bin[]={LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH};
int d_bin[]={LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH,HIGH};
int c_bin[]={LOW,LOW,LOW,LOW,HIGH,HIGH,HIGH,HIGH,LOW,LOW,LOW,LOW,HIGH,HIGH,HIGH,HIGH,LOW,LOW,LOW,LOW,HIGH,HIGH,HIGH,HIGH,LOW,LOW,LOW,LOW,HIGH,HIGH,HIGH,HIGH};
int b_bin[]={LOW,LOW,HIGH,HIGH,LOW,LOW,HIGH,HIGH,LOW,LOW,HIGH,HIGH,LOW,LOW,HIGH,HIGH,LOW,LOW,HIGH,HIGH,LOW,LOW,HIGH,HIGH,LOW,LOW,HIGH,HIGH,LOW,LOW,HIGH,HIGH};
int a_bin[]={LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW,HIGH};

//aux
int contador=0;
int entrada=0;
int a_val=0;
int b_val=0;
int c_val=0;
int d_val=0;
int e_val=0;

void setup() {

  beginSerial(9600);
  pinMode(input, INPUT);    
  pinMode(strobe, OUTPUT);
  pinMode(e, OUTPUT);
  pinMode(d, OUTPUT);
  pinMode(c, OUTPUT);
  pinMode(b, OUTPUT);
  pinMode(a, OUTPUT);
}

void loop() {

  for(entrada=0;entrada<=31;entrada++) {

    //select mux input
    a_val=a_bin[entrada];
    b_val=b_bin[entrada];
    c_val=c_bin[entrada];
    d_val=d_bin[entrada];
    e_val=e_bin[entrada];

    digitalWrite(a,a_val);
    digitalWrite(b,b_val);
    digitalWrite(c,c_val);
    digitalWrite(d,d_val);
    digitalWrite(e,e_val);
    //strobe LOW to read
    digitalWrite(strobe,LOW);

    //read value
    val[entrada] = digitalRead(input);  // read input value

    //strobe HIGH to avoid jitters
    digitalWrite(strobe,HIGH);
  }

  //serial printing
  //serialWrite('A');
  //delay(100);
  for(contador=0;contador<=31;contador++) {
    printInteger(val[contador]);
    delay(10);
  }
  printNewline();

}