I need help writing ARM assembly code with the following instructions below! thank you!

Consider a 9-story building with a basement. The first floor is given the number 1, the second is given the number 2 and so on. The basement is given the number 0. You will write a program to simulate an elevator operated throughout the whole building. Write the following subroutines that will work with the main program

a) DELAY: generates a software delay of 1 second b) OPEN: displays a 'Door open' message on the screen after a delay of 1 second. A working version of this code is supplied for your use on the "Software Downloads page. c) CLOSE: displays a 'Door close' message on the screen after a delay of1 second d) UP: performs the following procedure i. Displays a 'Going UP' message on the screen. ii. Goes up one floor at a time (1 second delay between each floor), until the elevator reaches the destination iii. At each floor, prints that number (current floor number) on the screen. iv. After the elevator reaches the destination floor, stores this number as the current floor number in memory e) DOWN: performs the following procedure i. Displays a Going DOWN' message on the screen ii. Goes down one floor at a time (1 second delay between each floor), until the elevator reaches the destination. iii. At each floor, prints that number (current floor number) on the screen. iv. After the elevator reaches the destination floor, stores this number as the current floor number in memory f) STAY: displays a 'Same floor' message on the screen after a delay of 1 second a) DELAY: generates a software delay of 1 second b) OPEN: displays a 'Door open' message on the screen after a delay of 1 second. A working version of this code is supplied for your use on the "Software Downloads page. c) CLOSE: displays a 'Door close' message on the screen after a delay of1 second d) UP: performs the following procedure i. Displays a 'Going UP' message on the screen. ii. Goes up one floor at a time (1 second delay between each floor), until the elevator reaches the destination iii. At each floor, prints that number (current floor number) on the screen. iv. After the elevator reaches the destination floor, stores this number as the current floor number in memory e) DOWN: performs the following procedure i. Displays a Going DOWN' message on the screen ii. Goes down one floor at a time (1 second delay between each floor), until the elevator reaches the destination. iii. At each floor, prints that number (current floor number) on the screen. iv. After the elevator reaches the destination floor, stores this number as the current floor number in memory f) STAY: displays a 'Same floor' message on the screen after a delay of 1 second