Assembly language for ARM

Write a program that will illuminate the first LED if the value of the switches is equal to your age, and the second LED if all switches are 1.

I'm stuck on the second half of this question while trying to program my board which has (12 switches: sw0 -> sw11 and 12 LEDs: LED 0 -> LED 11)

This is what I have so far

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.text .global main

.equ LED_CTL, 0x41210000 .set SW_DATA, 0x41220000

main: ldr r1,=SW_DATA ldr r2,=LED_CTL

loop_1: ldr r0,[r1] @load switch value, (*r1) ->r0 cmp r0,#21 @compare switch value with 21 beq led_light_1st @branch to 'led_light' if switch value is equal to 21

led_dim: mov r0,#0 str r0,[r2] b loop_1 @go back to start of loop

led_light_1st: mov r0,#1 @ This determines number of LEDs or location of LEDS 1.2.4.8.... str r0,[r2] b loop_1

.end

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