// MILLIS AND SO 
unsigned long _millis;
unsigned long millis();
void delay(uint16_t millisDelay); 


// miliis and delay related
unsigned long millis() {
    return _millis;
} //end millis()

void delay(uint16_t millisDelay){
    unsigned long _tempMillis = millis();
    while (_tempMillis + millisDelay > millis()){
        //do nothing 
    }
} //end delay(uint16_t millisDelay)