Neopixel primer 1

#define DDR_N (DDRB)
#define PORT_N (PORTB)
#define PIN_N (4)

#define BIT_SET (1 << PIN_N)
#define BIT_CLR (B00000000)

#define PIXEL_COUNT 16

//NOTE: Colors = G.R.B
char volatile one [ ] = "00000000.00001111.00000000";

void setup() {
    DDR_N = BIT_SET;

    for(int j = 0; j < PIXEL_COUNT; j++) {
        for(int i = 0; i < 26; i++) {
            if(one[i] == '1') {
                PORT_N = BIT_SET;
                asm volatile (
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                  );
                PORT_N = BIT_CLR;
                asm volatile (
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                );
            } else if(one[i] == '0') {
                PORT_N = BIT_SET;
                asm volatile (
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                );
                PORT_N = BIT_CLR;
                asm volatile (
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                "nop \n\t"
                );
            }
        }
    }
    delayMicroseconds(7);
}

void loop() {
  // put your main code here, to run repeatedly:
}