Arduino Pin Library  v4.2.0
An easy to use Arduino library for fast and simultaneous operations on Arduino I/O pins.
Arduino-Benchmark.ino
#define PIN 13 // Define PIN for digital pin labelled 13 on any of the supported boards
void setup() {
pinMode(PIN, OUTPUT); // Set PIN to output mode
}
void loop() {
while(true) {
digitalWrite(PIN, HIGH); // Set PIN to output HIGH
digitalWrite(PIN, LOW); // Set PIN to output LOW
}
}