#include <Adafruit_SoftServo.h>

Adafruit_SoftServo servo;
int pos = 0; 


void setup()
{
 
  servo.attach(PA6);

}

void loop() {
  for (pos = 0; pos <= 60; pos += 1) { 
    servo.write(pos);              
    delay(10);    
    servo.refresh();                  
  }
  for (pos = 60; pos >= 0; pos -= 1) { 
    servo.write(pos);              
    delay(10);                       
  servo.refresh();
  }
}