diff --git a/firmware/lib/teensy-libc b/firmware/lib/teensy-libc
index 6a2b179..88cb7c1 160000
--- a/firmware/lib/teensy-libc
+++ b/firmware/lib/teensy-libc
@@ -1 +1 @@
-Subproject commit 6a2b179d8f624d69b41a5d30df7b46080a1deec6
+Subproject commit 88cb7c10ca12ea33fb96aa10ae97a14d087da852
diff --git a/firmware/src/cmdr_keyboard.cpp b/firmware/src/cmdr_keyboard.cpp
index c86e571..3eaa7f3 100755
--- a/firmware/src/cmdr_keyboard.cpp
+++ b/firmware/src/cmdr_keyboard.cpp
@@ -45,8 +45,7 @@ const char keyboard_matrix_id[KEYBOARD_MATRIX_ROWS][KEYBOARD_MATRIX_COLS] = {
 Keypad keyboard_matrix =
     Keypad(makeKeymap(keyboard_matrix_id), keyboard_martix_row_pins, keyboard_matrix_col_pins, KEYBOARD_MATRIX_ROWS, KEYBOARD_MATRIX_COLS);
 
-struct Button
-{
+struct Button {
     uint16_t keycode = NO_KEY;
     uint16_t fn1_keycode = NO_KEY;
     uint16_t fn2_keycode = NO_KEY;
@@ -135,66 +134,51 @@ Button buttons[NBR_OF_BUTTONS] =
 /* End of keymap config ------------------------------------------------------------------ */
 
 /**
-  set_key.
-
-  @param keycode code to apply action.
-  @param kstate PRESSED or RELEASED.
-*/
-void set_key(uint16_t keycode, uint8_t kstate)
-{
+ * @breif set_key.
+ *
+ * @param keycode code to apply action.
+ * @param kstate PRESSED or RELEASED.
+ */
+void set_key(uint16_t keycode, uint8_t kstate) {
     if (keycode == NO_KEY || keycode == KEY_FN) return;
 
-    if (keycode == KEY_GUI_LATCH)
-    {
+    if (keycode == KEY_GUI_LATCH) {
         win_latched = true;
         return;
     }
 
-    if (kstate == RELEASED)
-    {
-        if (win_latched == true)
-        {
+    if (kstate == RELEASED) {
+        if (win_latched == true) {
             Keyboard.release(keycode);
             Keyboard.release(KEY_LEFT_GUI);
             win_latched = false;
-        }
-        else
-        {
+        } else {
             Keyboard.release(keycode);
         }
-    }
-    else if (kstate == PRESSED)
-    {
-        if (win_latched == true)
-        {
+    } else if (kstate == PRESSED) {
+        if (win_latched == true) {
             Keyboard.press(KEY_LEFT_GUI);
             Keyboard.press(keycode);
-        }
-        else
-        {
+        } else {
             Keyboard.press(keycode);
         }
     }
 }
 
 /**
- * process_keypad
- *
+ * @breif process_keys in keyboard matrix.
  */
-void process_keys()
-{
+void process_keys() {
     /* Scan keypad, exit if not ready */
     if (keyboard_matrix.getKeys() == false) return;
 
     int fn_mode = 0;
     int corner_pressed = 0;
 
-    for (int i = 0; i < MAX_SIMULTANIOUS_KEYS; i++)
-    {
+    for (int i = 0; i < MAX_SIMULTANIOUS_KEYS; i++) {
         /* Update button table if key pressed/releaseed */
         if ((keyboard_matrix.key[i].kstate == PRESSED || keyboard_matrix.key[i].kstate == RELEASED) &&
-            (keyboard_matrix.key[i].stateChanged == true))
-        {
+            (keyboard_matrix.key[i].stateChanged == true)) {
             buttons[keyboard_matrix.key[i].kchar - 1].run_keycode = true;
             buttons[keyboard_matrix.key[i].kchar - 1].kstate = keyboard_matrix.key[i].kstate;
         }
@@ -212,8 +196,7 @@ void process_keys()
         if (buttons[keyboard_matrix.key[i].kchar - 1].keycode == KEY_FN) fn_mode++;
     }
 
-    if (corner_pressed == 4)
-    {
+    if (corner_pressed == 4) {
         Keyboard.releaseAll();
         status_led.on();
         status_led.update();
@@ -221,73 +204,56 @@ void process_keys()
         _reboot_Teensyduino_();
     }
 
-    for (int i = 0; i < NBR_OF_BUTTONS; i++)
-    {
+    for (int i = 0; i < NBR_OF_BUTTONS; i++) {
         /* Check if key is ready to be set. Else skip to next button */
         if (buttons[i].run_keycode == false) continue;
         buttons[i].run_keycode = false;
 
-        if (buttons[i].kstate == RELEASED)
-        {
+        if (buttons[i].kstate == RELEASED) {
             set_key(buttons[i].last_keycode, RELEASED);
             continue;
         }
 
-        if (fn_mode == 0)
-        {
+        if (fn_mode == 0) {
             set_key(buttons[i].keycode, PRESSED);
             buttons[i].last_keycode = buttons[i].keycode;
-        }
-        else if (fn_mode == 1)
-        {
+        } else if (fn_mode == 1) {
             set_key(buttons[i].fn1_keycode, PRESSED);
             buttons[i].last_keycode = buttons[i].fn1_keycode;
-        }
-        else if (fn_mode == 2)
-        {
+        } else if (fn_mode == 2) {
             set_key(buttons[i].fn2_keycode, PRESSED);
             buttons[i].last_keycode = buttons[i].fn2_keycode;
         }
     }
 }
 
-void setup()
-{
+void setup() {
     /* Init HW */
     status_led.begin();
 }
 
-void loop()
-{
+void loop() {
     /* Update current time (ms) */
     current_timestamp = millis();
 
     /* Scan buttons 1ms */
-    if (current_timestamp >= button_timestamp)
-    {
+    if (current_timestamp >= button_timestamp) {
         process_keys();
         button_timestamp = current_timestamp + 1;
     }
 
     /* Update indicator 200ms */
-    if (current_timestamp >= indicator_timestamp)
-    {
+    if (current_timestamp >= indicator_timestamp) {
         /* Set status indication */
-        if (keyboard_leds & (1 << USB_LED_CAPS_LOCK))
-        {
+        if (keyboard_leds & (1 << USB_LED_CAPS_LOCK)) {
             status_led.blink();
-        }
-        else if (win_latched)
-        {
+        } else if (win_latched) {
             status_led.on();
-        }
-        else
-        {
+        } else {
             status_led.off();
         }
 
         status_led.update();
-
         indicator_timestamp = current_timestamp + 200;
     }
 }