From 5b8c23f780b5aaed58f5adb74143a9ecbbc8389c Mon Sep 17 00:00:00 2001
From: FReenen <git@finnvanreenen.nl>
Date: Wed, 4 Sep 2024 15:32:40 +0200
Subject: [PATCH] w1.1_lab1.1

---
 lab1.1/listing1 |  3 +++
 lab1.1/main.asm | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 lab1.1/listing1
 create mode 100644 lab1.1/main.asm

diff --git a/lab1.1/listing1 b/lab1.1/listing1
new file mode 100644
index 0000000..4312ca6
--- /dev/null
+++ b/lab1.1/listing1
@@ -0,0 +1,3 @@
+paste folowing code in first address for lazy typers:
+
+2008d4908d6008d2055d0600d4907d6008d20004906d6008d230dfd031dbd4da05d3da01dd1fdd40586008de7f9d3830d4002d0dc00d4002d0dc14d40025854d0014
diff --git a/lab1.1/main.asm b/lab1.1/main.asm
new file mode 100644
index 0000000..a225d22
--- /dev/null
+++ b/lab1.1/main.asm
@@ -0,0 +1,33 @@
+@ this code produces the same binary as listing 1
+
+  .syntax unified
+  .cpu cortex-m4
+  .thumb
+  .text
+  .global main
+main:
+   MOVS.N  R0, #8
+   LDR.N   R1, =0X40023830
+   STR.N   R0, [R1, #0]
+
+   MOVS.N  R0, #0X55
+   LSLS.N  R0, R0, #24
+   LDR.N   R1, =0X40020C00
+   STR.N   R0, [R1, #0]
+
+   MOVS.N  R0, #0
+   LDR.N   R1, =0X40020C14
+   STR.N   R0, [R1, #0]
+
+   MOVS.N  R3, #15
+   LSLS.N  R3, R3, #12
+
+loop:
+   LDR.N   R2, =0X00145854
+delay:
+   SUBS.N  R2, #1
+   BNE.N   delay
+updateLed:
+   EORS.N  R0, R3
+   STR.N   R0, [R1, #0]
+   B.N     loop