Design and write an MSP430 assembly language subroutine i2a_s(char*a, int myl) that converts a 16-bit integer, myl, into a character array

with elements correspoding to the hexadecimal representation of the integer.

4. (25 points) Write a subroutine Design and write an MSP430 assembly language subroutine i2a_s(char *a, int myl) that converts a 16-bit integer, myl, into a character array with elements corresponding to the hexadecimal representation of the integer. For example, an integer myl 13,486-0x34AE is converted into an array with 4 elements as follows: a[0 E', a[1]-'A, 2', a[3]-'3'. The main program that calls the subroutine is shown below Ascii('A')-0x41, ascii('0')-0x30 RESET: stopNDT : mov.w # STACK END , SP j Initialize stack pointer mov.w #WDTPWINDTHOLD,&NDTCTL ; Stop watchdog timer ; Main code here sub.w #4, SP mo ; allocate space for ascii chars 5 R14 points to the allocated area v.W SP, R14 mov.w myI, R4 push. R14 call #12as add "w #2, SP jmp $ Integer is passed through R4 ; push the starting address on the stack ; call subroutine ; free space on the stack - lend: myI: ; Stack Pointer definition word 0x34AE global STACK END sect .stack 5 Interrupt Vectors .Sect" reset" ; MSP430 RESET Vector short RESET i2a s: 4. (25 points) Write a subroutine Design and write an MSP430 assembly language subroutine i2a_s(char *a, int myl) that converts a 16-bit integer, myl, into a character array with elements corresponding to the hexadecimal representation of the integer. For example, an integer myl 13,486-0x34AE is converted into an array with 4 elements as follows: a[0 E', a[1]-'A, 2', a[3]-'3'. The main program that calls the subroutine is shown below Ascii('A')-0x41, ascii('0')-0x30 RESET: stopNDT : mov.w # STACK END , SP j Initialize stack pointer mov.w #WDTPWINDTHOLD,&NDTCTL ; Stop watchdog timer ; Main code here sub.w #4, SP mo ; allocate space for ascii chars 5 R14 points to the allocated area v.W SP, R14 mov.w myI, R4 push. R14 call #12as add "w #2, SP jmp $ Integer is passed through R4 ; push the starting address on the stack ; call subroutine ; free space on the stack - lend: myI: ; Stack Pointer definition word 0x34AE global STACK END sect .stack 5 Interrupt Vectors .Sect" reset" ; MSP430 RESET Vector short RESET i2a s