Arduino ADC increase to 10-16 bit

gistfile1.txt

#define potPin 0
#define ledPin 9


int potVal;

void setup()
{
/**********************************************************************************/
// Set pwm clock divider
/**********************************************************************************/ 
 TCCR1B &= ~(1 << CS12);
 TCCR1B  |=   (1 << CS11);
 TCCR1B &= ~(1 << CS10);  
                             

/**********************************************************************************/
// Set pwm resolution  to mode 7 (10 bit)
/**********************************************************************************/ 

TCCR1B &= ~(1 << WGM13);    // Timer B clear bit 4
TCCR1B |=  (1 << WGM12);    // set bit 3

TCCR1A |= (1 << WGM11);    //  Timer A set bit 1
TCCR1A |= (1 << WGM10);    //  set bit 0


pinMode(ledPin, OUTPUT); 

}


void loop()
{
 potVal = analogRead(potPin);
 analogWrite(ledPin, potVal);
}