// STRIBE SHIELD DEMO CODE - www.CuriousInventor.com/kits/stribe
// Read 13 analog inputs and send their values over the serial port 

// Creative Commons 2.5
// 6/3/09 v0
// CuriousInventor.com
// support: www.soundwidgets.com

// Use, modify, share!
// No Warranties whatsoever!

// Change Log:

// 6/3/09 
// first release

// HOW IT WORKS:

// The CD4051 is a switch that lets you connect one pin to one of 8 other pins.  This way you can read 8 lines with only one
// pin on the arduino, giving a total 13 analog inputs when using the stribe_shield.

// Three 4051 pins control which of the 8 pins connect to the common I/O pin.

// Set your Serial Monitor to 57600 baud and connect analog signals to A0 - A4, and holes 0-7 along side the 4051 chip.
// Don't attach anything to digital pins 4, 7 or 8--they're used to control the 4051.  Also the 5th analog pin connects to the 4051.


#define MULTIPLEX_A 8 // control lines for 4051 analog multiplexer
#define MULTIPLEX_B 7 // 
#define MULTIPLEX_C 4 // 

int num_analog_inputs = 13;

void setup() {
  pinMode(MULTIPLEX_A, OUTPUT);
  pinMode(MULTIPLEX_B, OUTPUT);
  pinMode(MULTIPLEX_C, OUTPUT);
  
  Serial.begin(57600);
}


void loop() {
   int j;
   
     for (j=0;j<num_analog_inputs ;j++) {       
       
       Serial.print(j);
       Serial.print(": ");
       if (j>=5) { // use the 5th analog in channel to read up to 8 more channels, giving a total of 13 possible inputs ( 0 thru 4 + 8)         
       
         if (j==5) {            
           digitalWrite(MULTIPLEX_A, LOW); // connect A05 to 4051 mu channeltiplexerl 0
           digitalWrite(MULTIPLEX_B, LOW);
           digitalWrite(MULTIPLEX_C, LOW); 
           Serial.println(analogRead(5));
         }
         else if (j==6) {          
           digitalWrite(MULTIPLEX_A, HIGH); // channel 1
           digitalWrite(MULTIPLEX_B, LOW);
           digitalWrite(MULTIPLEX_C, LOW);
           Serial.println(analogRead(5));
         }
         else if (j==7) {           
           digitalWrite(MULTIPLEX_A, LOW); // channel 2
           digitalWrite(MULTIPLEX_B, HIGH);
           digitalWrite(MULTIPLEX_C, LOW);
           Serial.println(analogRead(5));
         }
         else if (j==8) {                     
           digitalWrite(MULTIPLEX_A, HIGH); // channel 3
           digitalWrite(MULTIPLEX_B, HIGH);
           digitalWrite(MULTIPLEX_C, LOW); 
           Serial.println(analogRead(5));          
         }
         else if (j==9) {
           digitalWrite(MULTIPLEX_A, LOW); // channel 4
           digitalWrite(MULTIPLEX_B, LOW);
           digitalWrite(MULTIPLEX_C, HIGH);
           Serial.println(analogRead(5));
         }
         else if (j==10) {
           digitalWrite(MULTIPLEX_A, HIGH); // channel 5
           digitalWrite(MULTIPLEX_B, LOW);
           digitalWrite(MULTIPLEX_C, HIGH);
           Serial.println(analogRead(5));
         }
         else if (j==11) {
           digitalWrite(MULTIPLEX_A, LOW); // channel 6
           digitalWrite(MULTIPLEX_B, HIGH);
           digitalWrite(MULTIPLEX_C, HIGH);
           Serial.println(analogRead(5));
         }
         else if (j==12) {           
           digitalWrite(MULTIPLEX_A, HIGH); // channel 7
           digitalWrite(MULTIPLEX_B, HIGH);
           digitalWrite(MULTIPLEX_C, HIGH);
           Serial.println(analogRead(5)); 
  
           Serial.println();  
           Serial.println();        
           Serial.println(); 
           delay(1000);    
         }         
       }
       else { // read from the normal A0 thru A4 analog ports
         Serial.println(analogRead(j));
       }  

         
     } 
}