[CLO2] Problem 1 (35 points) Based on the AVR code given below, answer the questions that follows: // Problem 1 #define F_CPU 8000000UL #include #include int time_cntr = 0; int main() { TCCRO=0x03; TCNTO=0x00; DDRB =0xFF; while (1){}; } ISR (TIMERO_OVF_vect) { TCNTO = 6; if (time_cntr++== 500) { PORTB = PORTB^0x10; time_cntr = 0; } 1. What is the prescalar value and, as a result of this value, what clock signal (specify in Hz) gets applied to Timero? [5 points) 2. After how many seconds the Timer 0 interrupt occurs? Explain your answer. [5 points] 3. What is the frequency of waveform generated at Port B pin 4? Show calculations. (10 points) 4. Achieve the same task (by re-writing the program) by using the polling method. [15 points]