/*
12 output LSDj pitch controle!
By: Gijs Gieskes 2007
------------------------------
LSDj clock output pins: 0, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13.
Start/Stop button pin: 7. 
Pot pin: 0 (analog in)
*/

int analogValue = 0;                     // analog value
int analogPin = 0;
int SSButton = 7;
int SSRead = 0;
int led = 0;

void setup(){
  DDRB = B11111111;                      //  set pins as output
  DDRD = B11111101;                      //  set pins as output
  pinMode(SSButton, INPUT);              //  pushbutton as input
  digitalWrite(SSButton, HIGH);          //  turn pullup on
}

void loop(){
  SSRead = digitalRead(SSButton); 
  if (SSRead == LOW) { 
    lsdjClock();
    PORTD = B11111101;                   // led on
    analogValue = analogRead(analogPin);
    analogValue = 8+(analogValue/16);
    delay(analogValue);
  }
  PORTD = B10111101;                     //  led off
}

void lsdjClock(){
  for (int i=0; i <= 7; i++){
    PORTB = B00000000;                   //  all low
    PORTD = B10000000;                   //  all low  
    delayMicroseconds(62);               //  pauses for 62 microseconds      
    PORTB = B11111111;                   //  all high
    PORTD = B10111101;                   //  all high exept TX pin 1
    delayMicroseconds(62);               //  pauses for 62 microseconds   
  }
}