Use the MSP$430$ seven$-$segment daughter board $($available in the IEEE office$)$ to implement a

hexadecimal up$-$down counter on a single digit of the seven$-$segment display. The counter should

start at $0$x$0,$ count up to $0$xF$,$ count down to $0$x$0,$ and repeat indefinitely. The counter should update

every $500$ms$.$

Engineering Constraints

Your implementation must:

$$ Make use of the timerperipherals.

$$ Utilize a lookup table for the seven$-$segment values. I am using the MSP$-$EXP$430$FR$6989$ with TI Code Composer Studio, the project is a empty assembly only project. I have attached a schematic of the daughter board along with the connections. Below is the structure of a empty assembly only project. Written code should only be placed in the "Main loop here" section. ;$-------------------------------------------------------------------------------$

; MSP$430$ Assembler Code Template for use with TI Code Composer Studio

;

;

;$-------------------------------------------------------------------------------$

$.$cdecls C$,$LIST,"msp$430.$h$"$ ; Include device header file

;$-------------------------------------------------------------------------------$

$.$def RESET ; Export program entry$-$point to

; make it known to linker.

;$-------------------------------------------------------------------------------$

$.$text ; Assemble into program memory.

$.$retain ; Override ELF conditional linking

; and retain current section.

$.$retainrefs ; And retain any sections that have

; references to current section.

;$-------------------------------------------------------------------------------$

RESET mov.w #$\_\_$STACK$\_$END,SP ; Initialize stackpointer

StopWDT mov.w #WDTPW$|$WDTHOLD$,$&WDTCTL ; Stop watchdog timer

;$-------------------------------------------------------------------------------$

; Main loop here

;$-------------------------------------------------------------------------------$

;$-------------------------------------------------------------------------------$

; Stack Pointer definition

;$-------------------------------------------------------------------------------$

$.$global $\_\_$STACK$\_$END

$.$sect $.$stack

;$-------------------------------------------------------------------------------$

; Interrupt Vectors

;$-------------------------------------------------------------------------------$

$.$sect $".$reset" ; MSP$430$ RESET Vector

$.$short RESET