buzzer with attiny45

Projects Programming
1

Hi, i'm quite new with the arduino ide and i'm wondering how i can make a buzzer sound with an attiny45,i've tried:

AnalogWrite on a PWM pin with a duty cicle of 50% and tone function, both didn't work.

then i moved to a more rough slution:

void ttone (int,unsigned long int,int); //pin ,freq-HZ ,duration-mS

const int outpin = 2; //pin for the buzzer

void setup()  
{ 
    Serial.begin(9600);
    pinMode(outpin,OUTPUT);
  
} 

void loop()  
{ 
  ttone(outpin,1000,2000);   //pulse 1000HZ on pin 2 for 2000 millis
  ttone(outpin,500,2000);    //pulse 500HZ on pin 2 for 2000 millis  
}


void ttone(int pin,unsigned long int f,int l)
{
  
    unsigned long int t;
    unsigned long int idlet; 
    
    idlet=millis();               // gets idle time 
    Serial.print("idle: ");
    Serial.println(idlet);
  

    t=((1/f)*1000000)/2;        // 1HZ= 1/1s -> t[s]= 1/freq[HZ] -> t[micros]= t[s]*1.000.000 -
                                // -> /2 because you need 2 delays for the pin to go HIGH and go LOW (do one pulse)
    Serial.print("time ");
    Serial.println(t);

    while((millis()-idlet)<l)  //eplased time[millis] since the function was called= current time - idle time < the time[millis] you want the function to run
    {  
        digitalWrite(pin,HIGH);
        delayMicroseconds(t);
        digitalWrite(pin,LOW);
        delayMicroseconds(t);
        Serial.print("current: ");
        Serial.println(millis()-idlet);
    }
       
}

it didn't work properly.

So is there a more proper way to create a PWM output for the buzzer?
If not can someone see what's wrong in that code i written?

thanks in advantage for the answers.