// defines for setting and clearing register bits
#ifndef cbi
#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
#endif
#ifndef sbi
#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
#endif


#define F_CPU 16000000UL                                       

//#define ARRAY 128

//uint8_t CLKcycleCounter = 0;              	       // counts the number of clock cycles expired
#define CLK 5                         		      // Clock pin (TIMER2 will need changing if you move this pin. PD5)
#define SI  4                    	                       // SI pin  PD4)
#define LED 13                          		  // Pin  PB5
int analogPin = A0;             		 // PinA0
int Array[128];



void setup() 
{
  DDRD=0xFF;
  Serial.begin(9600);
  sbi(CLKPR,CLKPS0);                	     //Clock Prescaler:8
  sbi(CLKPR,CLKPS1);
  cbi(CLKPR,CLKPS2);
  cbi(CLKPR,CLKPS3);
                                       		  //ADC Prescaler:16
  cbi(ADCSRA,ADPS0);
  cbi(ADCSRA,ADPS1);
  sbi(ADCSRA,ADPS2);
  
}
void SI_Pulse()
{
   digitalWrite(SI,HIGH);          		    //Set SI high
   delayMicroseconds(100);    		   //Stay high for a duration
   digitalWrite(SI,LOW);             		  //Set SI low
}
void CLK_Pulse()
{
 digitalWrite(CLK,HIGH);            	  //Set Clock high
 delayMicroseconds(100);         		 //Stay high for a duration
 digitalWrite(CLK,LOW);           		//Set Clock low
}



void loop() 
{
  delay(1000);
 
  for(int i=0; i<128;i++)       		//for 128 Cycles Generate Clock and SI
  {
    CLK_Pulse();                          		//Set Clock Pulse
    if(i == 0)                         		// During the first pulse
      {
        SI_Pulse();                      		 //Set SI function
      }
    else if(i != 0)                      
      {
        digitalWrite(SI,LOW);    		 //Set SI complete Low 
      }
    delayMicroseconds(1000);
     
    int Pixel=analogRead(A0); 		 //Reading Analog Data
    if(Pixel>100)			 //100 is just an example value between 0-1023
    {
       Array[i]=Pixel;
    }
    else if(Pixel<=100)
    {
      Array[i]=0;
    }
  }
  
   for(int j=0; j<128;j++)
   {
   
   Serial.print(Array[j]);
   }

delay(10);                                   		 //delay time for integration
}