Description:$-$ This program uses macro functions definitions to set, clear, toggle and check a bit in position $$n$$ of a given PORT. Inputs:$-$ None Outputs:$-8$ outputs on PORTB $($i$.$e$.$ RB$7$ RB$0)$ Instructions:$-1.$ Create a function macro for setting, clearing, toggling and checking a particular bit of a PORT. E$.$g$.$ #define setbit$($port$,$ bitn$)..................$ #define clearbit$($port$,$ bitn$).................$ #define togglebit$($port$,$ bitn$).................$ #define checkbit$($port$,$ bitn$)..............$ where, bitn $=0,1,2.....\mathrm{.}7($i$.$e bits $0$ to $7$ in a PORT$).2.$ Inside main$(),$ call the four macro definitions above inside a continuous loop, on PORTB, to test the operation of each marco. Insert a programmable delay, with a default value of $2000$mSec, between each marco call to see if each macro operates correctly by observing the LEDs turning on$/$off$.$ Ensure to clear PORTB before entering the continuous loop. Use the following sequence inside a continuous loop:$-$

$$ Set PORTB Bit $0$ Delay $$ Set PORTB Bit $1$ Delay $$ Clear PORTB Bit $0$ Delay $$ Toggle PORTB Bit $1$ Delay $$ Toggle PORTB Bit $2$ Delay $$ If PORTB BIT$2$ is set $$ then set PORTB Bit $3$ else clear PORTB Bit $3$ Delay

$3.$ Add comments to your code $($marks lost for no comments$).4.$ Ensure all code is properly indented $($i$.$e$.$ marks lost for no indentation$)$