From dfd387545ec2ce6a13d14822e078245a9d70a2fd Mon Sep 17 00:00:00 2001
From: Alex Brooke <akb.sbc@gmail.com>
Date: Mon, 2 Sep 2019 20:11:28 -0400
Subject: [PATCH 1/2] =?UTF-8?q?=F0=9F=90=9B=20adddefault=20LLEMU=20init=20?=
 =?UTF-8?q?code=20back=20to=20main.cpp?=
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---
 src/main.cpp | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index 99fd1bc71..95aa9873e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,5 +1,15 @@
 #include "main.h"
 
+void on_center_button() {
+	static bool pressed = false;
+	pressed = !pressed;
+	if (pressed) {
+		pros::lcd::set_text(2, "I was pressed!");
+	} else {
+		pros::lcd::clear_line(2);
+	}
+}
+
 /**
  * Runs initialization code. This occurs as soon as the program is started.
  *
@@ -7,6 +17,10 @@
  * to keep execution time for this mode under a few seconds.
  */
 void initialize() {
+	pros::lcd::initialize();
+	pros::lcd::set_text(1, "Hello PROS User!");
+
+	pros::lcd::register_btn1_cb(on_center_button);
 }
 
 /**
@@ -14,8 +28,7 @@ void initialize() {
  * the VEX Competition Switch, following either autonomous or opcontrol. When
  * the robot is enabled, this task will exit.
  */
-void disabled() {
-}
+void disabled() {}
 
 /**
  * Runs after initialize(), and before autonomous when connected to the Field
@@ -26,8 +39,7 @@ void disabled() {
  * This task will exit when the robot is enabled and autonomous or opcontrol
  * starts.
  */
-void competition_initialize() {
-}
+void competition_initialize() {}
 
 /**
  * Runs the user autonomous code. This function will be started in its own task
@@ -40,8 +52,7 @@ void competition_initialize() {
  * will be stopped. Re-enabling the robot will restart the task, not re-start it
  * from where it left off.
  */
-void autonomous() {
-}
+void autonomous() {}
 
 /**
  * Runs the operator control code. This function will be started in its own task

From a5f40c0313b8dc4a1c4ff08653b13a16200d4472 Mon Sep 17 00:00:00 2001
From: Alex Brooke <akb.sbc@gmail.com>
Date: Mon, 2 Sep 2019 20:46:22 -0400
Subject: [PATCH 2/2] add documentation comment for callback function

---
 src/main.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main.cpp b/src/main.cpp
index 95aa9873e..2cc89c635 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,5 +1,11 @@
 #include "main.h"
 
+/**
+ * A callback function for LLEMU's center button.
+ *
+ * When this callback is fired, it will toggle line 2 of the LCD text between
+ * "I was pressed!" and nothing.
+ */
 void on_center_button() {
 	static bool pressed = false;
 	pressed = !pressed;