int latchPin = 7;
int clockPin = 5;
int dataPin = 6;
int count = 0;
void setup()
{
pinMode(latchPin, OUTPUT);
pinMode(clockPin, OUTPUT);
pinMode(dataPin, OUTPUT);
}
void loop()
{
PORTD &= ~(1<<7);//digitalWrite(latchPin,LOW);
shiftOut(count);
PORTD |= (1<<7);//digitalWrite(latchPin,HIGH);
delay(1000);
if(count == 0)
count = 1;
else
count = 0;
}
void shiftOut(long myDataOut)
{
int pinState;
int outPut;
for (outPut=24; outPut >= 0; outPut--) //24 different outputs
{
for(int val = 11; val >= 0; val--) //12 bit number
{
PORTD &= ~(1<<5);
if ( count == 1 )
{
pinState = 1;
}
else
{
pinState= 0;
}
if(pinState == 0)
PORTD &= ~(1<<6);
else
PORTD |= (1<<6);
PORTD |= (1<<5);
PORTD &= ~(1<<6);
}
}
PORTD &= ~(1<<5);
}
