Question $2$

Not yet answered Marked out of $10\mathrm{.}00$

Suppose that the crystal frequency is $8MHz,8$ leds are connected to PORTD and a button is connected to RB$2.$ Write a program that turns one led and shifts$/$rotates it

every $0\mathrm{.}5$ Second. Whenever you press th button the first led is turned on and continue shifting. Notes:

Use timer $1$ to generate the required delay and use the appropriate interrupt to know that it overflows $($don$\text{'}$t use polling$)$

Don't monitor RB$2($don$\text{'}$t use polling$),$ instead use the appropriate interrupt so that the program get notificed whenever the button is pressed.

Show all the calculations and justify using the values loaded to control registers $($Such as T$1$CON, TMR$1$L$,$ TMR$1$H$)*$

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Note: Solve questions on the subject EMBEDDED SYSTEMS

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This means the code will be written in assembly language

and using the pic $18$

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