lab 3 setup

lab3subroutines/src/gpio.s

@@ -0,0 +1,9 @@
+# gpio.s
+# Trevor Barnes
+# CE2801-031
+# Description: A file to handle the GPIO behavior of the Dev Board
+
+.syntax unified
+.cpu cortex-m4
+.thumb
+.section .text

lab3subroutines/src/led.s

@@ -0,0 +1,25 @@
+# led.s
+# Trevor Barnes
+# CE2801-031
+# Description: A file for handling the LED pins on the Dev Board
+
+# Lights are on PB5-PB15 except PB11
+
+.syntax unified
+.cpu cortex-m4
+.thumb
+.section .text
+
+    # Base RCC
+    .equ RCC_BASE, 0x40023800
+    # GPIOB Enable Register
+    .equ RCC_AHB1ENR, 0x30
+    # GPIOB Enable
+    .equ RCC_GPIOBEN, 1<<1
+
+    # Base GPIOB Location
+    .equ GPIOB_BASE, 0x40020400
+    # GPIO Mode Register
+    .equ GPIO_MODER, 0x00
+    # GPIO Output Data Register
+    .equ GPIO_ODR, 0x14

lab3subroutines/src/main.s

@@ -0,0 +1,15 @@
+# main.s
+# Trevor Barnes
+# CE2801-031
+# Lab 3: Subroutines
+# Description:
+
+.syntax unified
+.cpu cortex-m4
+.thumb
+.section .text
+
+.global main
+
+main:
+