#include <Servo.h>

#define delaytime 5 // delay time between steps (ms)
#define servopin0 8 // servo 0 pin (PA8)
Servo servo0,servo1; //declare servos
int angle = 0;

void setup() {
   servo0.attach(servopin0); // attach servos to pins
   }

void loop() {
   for (angle = 0; angle <= 180; ++angle) { // step servo 0
      servo0.write(angle);
      delay(delaytime);
      }
   for (angle = 180; angle >= 0; --angle) { // step both
      servo0.write(angle);
      //servo1.write(angle);
      delay(delaytime);
      }
   }