IoT 아두이노 0526 - no2

int vib = 23; //Vibrator
int led = 6; //LED
int sw[6] = {20,22,24,26,28,30}; // Switch
int sp = 500; //speed
int st; //Temp Value
void setup() {
  pinMode(vib, OUTPUT);
  pinMode(led, OUTPUT);
  pinMode(sw,INPUT_PULLUP);
  //pinMode(sw2,INPUT_PULLUP);
  //pinMode(sw3,INPUT_PULLUP);
  //pinMode(sw4,INPUT_PULLUP);

}

void loop() {
   st=0;
   if(digitalRead(sw[5]) == HIGH){sp = 500;} //sp Clear
   else if(digitalRead(sw[3]) == HIGH){ //ON
   while(st<1){
        if(digitalRead(sw[4]) == HIGH){st++;} //OFF
        if(digitalRead(sw[1]) == HIGH){if(sp==50){continue;}sp-=50;} //SPEED UP
        if(digitalRead(sw[2]) == HIGH){sp+=50;} //SPEED DOWN
        digitalWrite(led,HIGH);
        digitalWrite(vib,HIGH);
        delay(sp);
        digitalWrite(led,LOW);
        digitalWrite(vib,LOW);
        delay(sp);
     }
  }
}