#define F_CPU 9600000
int servo = PB0;
int btn=PB2;
int pwm=0;
int angle=0;
#include <avr/io.h>
void setup() {
    delay(100);
    pinMode(servo, OUTPUT);
     pinMode(btn, INPUT_PULLUP);
    servoPulse(servo, 0);
}
void loop() {
    uint8_t statusTombol = digitalRead(btn);
  if (statusTombol == 0) {
        if (angle !=180) {
            angle += 5;  
            servoPulse(servo, angle);
        }
    } 
    else {
        if (angle != 0) {
            angle -= 5;
            servoPulse(servo, angle);
        }
    }
}
void servoPulse(int servo, int angle) {
    pwm = (angle * 11) + 500;
    digitalWrite(servo, HIGH);
    delayMicroseconds(pwm);
    digitalWrite(servo, LOW);
    delay(30);
}