2- Consider the WAIT subroutine for Tekbot discussed in class that waits for 1 sec. and returns. Rewrite the WAIT subroutine so that it waits for 1 sec. using the 16-bit Timer/Counterl with the highest resolution. Assume that the system clock frequency is 16 MHz and the Timer/Counterl is operating under the CTC mode. This is done by doing the following (a) Timer/Counter is initialized to operate in the CTC mode (b) The WAIT subroutine loads the proper value into OCRIA and waits until OCF1 is set. Once OCF1 is set, it is cleared and the WAIT subroutine returns. Use the skeleton code shown below. Also, show the necessary calculations for determining value and prescale. Note that your code may not use any other GPRs besides mpr .include "m128def.inc" def mpr - r16 ORG $0000 RJMPInitialize ORG $0046 Initialize: ; End of interrupt vectors .. .Your code goes here... WAIT: .. .Your code goes here... RET [25 pts] 3- Consider the following AVR assembly code that waits for sec. using the 8-bit Timer/Counter0 with the system clock frequency of 16 MHz operating under Normal mode. Write and explain the instructions in lines (1-10) necessary to make this code work properly. More specifically, (a) Fill in lines (1-2) with the necessary code to enable the interrupt on Timer/Counter0 overflow (b) Fill in lines (3-4) with the necessary code to load the value for delay that generates an interrupt after5 ms (c) Fill in lines (5-6) with the necessary code to set the prescalar value and the mode of operation. (d) Fill in line (7) with the necessary code to set counter (e) Fill in lines (8-9) with the necessary code to reload the value for delay (f) Fill in line (10) with the necessary code to decrement counter. .include "m128def.inc" def mpr = r16 def counter = r17 ORG $0000 RJMP Initialize ORG $0020 ; Timer/Counter0 overflow interrupt vector JMP Reload counter ORG $0046 ; End of interrupt vectors Initialize: ; Enable interrupt on Timer/Counter0 overflow SEI ; Enable global interrupt ; Load the value for delay ; Set pre scalar and mode ; Set counter 4 LOOP: 2- Consider the WAIT subroutine for Tekbot discussed in class that waits for 1 sec. and returns. Rewrite the WAIT subroutine so that it waits for 1 sec. using the 16-bit Timer/Counterl with the highest resolution. Assume that the system clock frequency is 16 MHz and the Timer/Counterl is operating under the CTC mode. This is done by doing the following (a) Timer/Counter is initialized to operate in the CTC mode (b) The WAIT subroutine loads the proper value into OCRIA and waits until OCF1 is set. Once OCF1 is set, it is cleared and the WAIT subroutine returns. Use the skeleton code shown below. Also, show the necessary calculations for determining value and prescale. Note that your code may not use any other GPRs besides mpr .include "m128def.inc" def mpr - r16 ORG $0000 RJMPInitialize ORG $0046 Initialize: ; End of interrupt vectors .. .Your code goes here... WAIT: .. .Your code goes here... RET [25 pts] 3- Consider the following AVR assembly code that waits for sec. using the 8-bit Timer/Counter0 with the system clock frequency of 16 MHz operating under Normal mode. Write and explain the instructions in lines (1-10) necessary to make this code work properly. More specifically, (a) Fill in lines (1-2) with the necessary code to enable the interrupt on Timer/Counter0 overflow (b) Fill in lines (3-4) with the necessary code to load the value for delay that generates an interrupt after5 ms (c) Fill in lines (5-6) with the necessary code to set the prescalar value and the mode of operation. (d) Fill in line (7) with the necessary code to set counter (e) Fill in lines (8-9) with the necessary code to reload the value for delay (f) Fill in line (10) with the necessary code to decrement counter. .include "m128def.inc" def mpr = r16 def counter = r17 ORG $0000 RJMP Initialize ORG $0020 ; Timer/Counter0 overflow interrupt vector JMP Reload counter ORG $0046 ; End of interrupt vectors Initialize: ; Enable interrupt on Timer/Counter0 overflow SEI ; Enable global interrupt ; Load the value for delay ; Set pre scalar and mode ; Set counter 4 LOOP