test vitesse registres/digitalWrite

byte mask;
byte b;
int ls595DataPin =8;
int ls595ClockPin = 9;
unsigned long Temps;
unsigned long boucle;
void setup()
{

Serial.begin(9600);
pinMode(ls595DataPin,OUTPUT);
pinMode(ls595ClockPin, OUTPUT);
b=B10111011;

}
void loop()
{
  Temps = millis();

for (boucle = 0;boucle<10000;boucle++)
{
mask=B10000000;
while (mask>0)
{
//digitalWrite(ls595DataPin, ((b & mask) == mask));
//digitalWrite(ls595ClockPin, HIGH);
//igitalWrite(ls595DataPin, LOW);

//((b & mask) == mask) ? PORTB |= (1 << PORTB5) : PORTB &= ~( 1 << PORTB5);
//PORTB |= (1<< PORTB4);
//PORTB &= ~(1<<PORTB4);
mask>>=1;
}
}
  Serial.print("durée : ");
  Serial.println(millis()-Temps);

delay(2000);

//}
}