$$ Build a program using assembly instructions that turns on both the blue and red LEDs on your Tiva C board.

$$ Then, modify your program to use switch SW$1$ on your Tiva C board to control those LEDs by turning on the blue and green led to create aqua blue $($SW$1$ pressed makes the LEDs turn on$,$ SW$1$ released makes the LEDs turn off$).$

Here is what I have so far it turns on the red led when the button is pressed. $.$thumb

$.$global main

; Your constants go here

main:

$.$asmfunc

; Initial setup

aSystemControlBase: $.$field $0$x$400$FE$000,32$ ; Base address for the System Control registers $($which includes RCGCGPIO$)$

bit$5$: $.$equ $0$x$20$ ; bit $5$ enables GPIO port F

oRCGCGPIO: $.$equ $0$x$608$ ; offset for RCGCGPIO from base System Control registers address

aGPIOFBase: $.$field $0$x$40025000,32$ ; Base address for GPIO Port F registers $($APB$)$

pin$2$: $.$equ $0$x$02$ ; bit $2$ high only, for setting pin$2$ direction, etc.

pin$4$: $.$equ $0$x$10$ ; bit $4$ high only, for setting pin$4$ pull$-$up$,$ etc.

oGPIODIR: $.$equ $0$x$400$ ; offset for GPIODIR $($pin direction$)$ from any GPIO port base address

oGPIODEN: $.$equ $0$x$51$C ; offset for GPIODEN $($digital I$/$O$)$ from any GPIO port base address

oGPIOPUR: $.$equ $0$x$510$ ; offset for GPIOPUR $($pull$-$up resistor$)$ from any GPIO port base address

swread: $.$equ $0$x$040$ ; offset for GPIODATA from any GPIO port base address, further offset to mask pin $4$ to allow read

oWrite: $.$equ $0$x$08$ ; offset for GPIODATA from any GPIO port base address, further offset to mask pin $2$ to allow write

;red light when button is pushedd $($PF$2$&$3)$

;light off when button is let go $($PF$4)$

config: LDR R$0,$ aSystemControlBase

MOV R$1,$ #bit$5$

STR R$1,[$R$0,$#oRCGCGPIO$]$

LDR R$0,$ aGPIOFBase

MOV R$1,$ #pin$2$

STR R$1,[$R$0,$#oGPIODIR$]$

LDR R$0,$ aGPIOFBase

MOV R$1,$ #$0$x$12$

STR R$1,[$R$0,$#oGPIODEN$]$

LDR R$0,$ aGPIOFBase

MOV R$1,$ #pin$4$

STR R$1,[$R$0,$#oGPIOPUR$]$

impl:

LDR R$3,[$R$0,$#swread$]$

CMP R$3,$ #pin$4$

BEQ off

on: MOV R$4,$#$0$x$02$

STR R$4,[$R$0,$#oWrite$]$

B impl

off:

MOV R$4,$#$0$

STR R$4,[$R$0,$#oWrite$]$

B impl

loop:

B loop

$.$endasmfunc

$.$end