//Include Button and Sound Library


long i=1 ;
              int j=0; long sequ[16];
              int f=0; int k=0    ;

  void main() {
 //initiallizing the buzzer
              Sound_Init(&GPIOE_ODR,14);
//setting inputs and outputs

  GPIO_DIGITAL_Input(&GPIOB_IDR,0XFFFF);

  GPIO_DIGITAL_Input(&GPIOD_IDR,0XFFFF);

  GPIO_DIGITAL_Output(&GPIOE_BASE,0XFFFF);

     while(1)
     {

     f=0; j=0; i=1; k=0;
       while(1){
           for(i=0; i<16;  i++){

                   if(Button(&GPIOD_IDR,i,1,1)){
                   while(Button(&GPIOD_IDR,i,1,1)){}  //this is to not read any value while the user is still pressing

                       sequ[j]=i*150;    //convert into frequency and save in the array
                       j++; Delay_ms(50);
                   }
                     if(Button(&GPIOB_IDR,0,1,1)){f=1; break;}   //When button B1 is pressed 
           }
           if(f==1) break;
       }


        if(f==1){

        for(i=0; i<j; i++){
                 Sound_Play(sequ[i],500);  //playing the values recorded in the array
                          }
        }
      }



}