Code that varies the angle of a servo motor from 0 to 90 degrees and that is controlled by the pin RE0

void setup() {
  pinMode(RE0, OUTPUT);
  servo0.attach(RE0);
  Serial.begin(115200);
}

void loop() {
  servo0.write(0);
  Serial.println(0);
  delay(1000);
  servo0.write(90);
  Serial.println(90);
  delay(1000);
}