diff --git a/src/LedController/LedController.c b/src/LedController/LedController.c
index b7900f3..4bdb819 100644
--- a/src/LedController/LedController.c
+++ b/src/LedController/LedController.c
@@ -21,8 +21,7 @@
 
 #define HALF_BYTE_BM
 
-
-//static LedController controller;
+// static LedController controller;
 
 void LedControler_SetPortADefault(void);
 
@@ -80,3 +79,17 @@ void LedControler_ClearHalfByte(void)
     PORTA.OUT &= ~PA_B4;
     // PORTA.OUT = 0x00;
 }
+
+void LedController_SetHigh(Led *led)
+{
+    *led->port |= (1 << led->pin_num);
+    led->state = true;
+    return;
+}
+
+void LedController_SetLow(Led *led)
+{
+    *led->port &= ~(1 << led->pin_num);
+    led->state = false;
+    return;
+}
diff --git a/src/LedController/LedController.h b/src/LedController/LedController.h
index 36ccf0c..c941e02 100644
--- a/src/LedController/LedController.h
+++ b/src/LedController/LedController.h
@@ -10,20 +10,18 @@
 #ifndef LEDCONTROLLER
 #define LEDCONTROLLER
 
-#include <stdint.h>
 #include "stdbool.h"
-
+#include <stdint.h>
 
 /**
  * A structure representing an LED
  */
-typedef struct Led 
+typedef struct Led
 {
     uint8_t *port;
-    uint8_t pin_num;
-    bool state;
-}Led;
-
+    uint8_t  pin_num;
+    bool     state;
+} Led;
 
 /**
  * Sets the default PORTB pins for output.
@@ -58,4 +56,16 @@ void LedControler_ShowHalfByte(uint8_t byte);
  */
 void LedControler_ClearHalfByte(void);
 
+/**
+ * Sets a AVR Led to High/on.
+ * @param led Pointer to an Led structure.
+ */
+void LedController_SetHigh(Led *led);
+
+/**
+ * Sets a AVR Led to Low/off.
+ * @param led Pointer to an Led structure.
+ */
+void LedController_SetLow(Led *led);
+
 #endif // LEDCONTROLLER
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 932bde3..ea030d6 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -1,12 +1,12 @@
 project(Tests)
 
 # TEST_DIRS
-add_subdirectory(LedController)
 #add_subdirectory(timer)
 #add_subdirectory(usart)
 add_subdirectory(MockRegEdit)
 add_subdirectory(RegEdit)
 add_subdirectory(simple_test)
+add_subdirectory(LedController)
 
 
 
diff --git a/tests/LedController/test_LedController.cpp b/tests/LedController/test_LedController.cpp
index 0b44bab..6f5f61b 100644
--- a/tests/LedController/test_LedController.cpp
+++ b/tests/LedController/test_LedController.cpp
@@ -24,8 +24,34 @@ TEST_GROUP(test_LedController)
     }
 };
 
+TEST(test_LedController, selftest)
+{
+    CHECK_TRUE(true);
+}
 
-TEST(test_LedController, LedController_SetHigh)
+
+TEST(test_LedController, LedSetHighWorks)
+{
+    uint8_t fake_port = 0x00;
+    
+    Led fake_led;
+    fake_led.port = &fake_port;
+    fake_led.pin_num = 0;
+    fake_led.state = false;
+ 
+    LedController_SetHigh(&fake_led);
+
+    //Check that it sets the correct bit.
+    CHECK_TRUE(fake_port & 0x01);
+
+    //It should set the state to true.
+    CHECK_TRUE(fake_led.state);
+
+    //Only the first bit should have been set
+    CHECK_TRUE(fake_port == 0x01);
+}
+
+TEST(test_LedController, LedSetHighMaintainsPortState)
 {
     uint8_t fake_port = 0x00;
     
@@ -34,4 +60,31 @@ TEST(test_LedController, LedController_SetHigh)
     fake_led.pin_num = 0;
     fake_led.state = false;
 
+    Led led_two;
+    led_two.pin_num = 1;
+    led_two.port = &fake_port;
+    led_two.state = false;
+
+    LedController_SetHigh(&fake_led);
+    LedController_SetHigh(&led_two);
+
+    CHECK_TRUE(fake_port & 0x01);
+    CHECK_TRUE(fake_port & 0x02);
 }
+
+TEST(test_LedController, LedSetLow)
+{
+    uint8_t fake_port = 0x01;
+    
+    Led fake_led;
+    fake_led.port = &fake_port;
+    fake_led.pin_num = 0;
+    fake_led.state = true;
+
+    LedController_SetLow(&fake_led);
+
+    CHECK_EQUAL(0x00, fake_port);
+    CHECK_EQUAL(false, fake_led.state);
+}
+
+