Now we show off when your keyboard has numlock enabled.

ArduinoKeyboard.ino

@@ -274,13 +274,13 @@ void setup()
   Keyboard.begin();
   Mouse.begin();
   setup_leds();
-  update_leds();
+  update_leds(0);
   setup_command_mode();
   setup_matrix();
   setup_pins();
   rightsx1509.fetchPinStates();
 
-  primary_keymap = load_primary_keymap();
+  temporary_keymap = primary_keymap = load_primary_keymap();
 }
 
 String myApp;
@@ -295,7 +295,7 @@ void loop()
   TS("about to scan the matrix")
   scan_matrix();
   TS("updating LEDs");
-  update_leds();
+  update_leds(temporary_keymap == NUMPAD_KEYMAP);
 }
 
 

keymaps_generated.h

@@ -49,7 +49,7 @@
 	{Key_LGUI, Key_Backspace, Key_LShift, Key_LCtrl, Key_KeymapNext_Momentary, Key_skip, Key_skip, Key_skip, Key_skip, Key_KeymapNext_Momentary, Key_RCtrl, Key_RShift, Key_Space, Key_RAlt},\
 },
 #define KEYMAPS 3
-// This is a total waste. we should only ever include any given keymap once
+#define NUMPAD_KEYMAP 2
 static const Key keymaps[KEYMAPS][ROWS][COLS] = {
 	KEYMAP_QWERTY
 	KEYMAP_GENERIC_FN2

keymaps_h-template

@@ -1,5 +1,5 @@
 #define KEYMAPS 3
-// This is a total waste. we should only ever include any given keymap once
+#define NUMPAD_KEYMAP 2
 static const Key keymaps[KEYMAPS][ROWS][COLS] = {
 	KEYMAP_QWERTY
 	KEYMAP_GENERIC_FN2

led_control.cpp

@@ -7,6 +7,7 @@ WS2812 LED(LED_COUNT);
 
 int led_mode;
 int last_led_mode;
+int stored_led_mode;
 int pos = 0;
 cRGB led_off;
 
@@ -16,7 +17,7 @@ cRGB led_off;
 cRGB led_steady;
 cRGB led_blue;
 cRGB led_dark_blue;
-
+cRGB led_bright_red;
 
 cRGB led_breathe;
 
@@ -56,6 +57,10 @@ void setup_leds() {
   led_dark_blue.g = 0;
   led_dark_blue.b = 127;
 
+  led_bright_red.r=255;
+  led_bright_red.g=0;
+  led_bright_red.b=0;
+
 
 
 
@@ -116,7 +121,20 @@ void set_led_mode(int mode) {
 
 
 
-void update_leds() {
+void update_leds(int numlock_enabled) {
+    if (numlock_enabled) {
+        if (led_mode != LED_SPECIAL_MODE_NUMLOCK) {
+            stored_led_mode = led_mode;
+        }
+        led_mode = LED_SPECIAL_MODE_NUMLOCK;
+    }
+    if (!numlock_enabled && 
+        led_mode == LED_SPECIAL_MODE_NUMLOCK 
+        ) {
+        led_mode = stored_led_mode;
+        }
+
+
   if (led_mode != last_led_mode) {
     initialize_led_mode(led_mode);
   }
@@ -132,21 +150,32 @@ void update_leds() {
     led_effect_chase_update();
   } else if (led_mode == LED_MODE_STEADY) {
     led_effect_steady_update();
-    
-  
+  } else if (led_mode == LED_SPECIAL_MODE_NUMLOCK) {
+    led_effect_numlock_update();
+
   }
 
   last_led_mode = led_mode;
 }
 
 
+void led_effect_numlock_update() {
 
+  for (int i = 0; i < 44; i++) {
+    LED.set_crgb_at(i, led_off);
+  }
+  for (int i = 44; i < LED_COUNT; i++) {
+    LED.set_crgb_at(i, led_bright_red);
+  }
+    led_compute_breath();
+    LED.set_crgb_at(60, led_breathe); // make numlock breathe
+    LED.sync();
+}
   void led_effect_steady_update() {
     LED.sync();
     }
 
-
-void led_effect_breathe_update() {
+void led_compute_breath() {
   // algorithm from http://sean.voisen.org/blog/2011/10/breathing-led-with-arduino/
   breathe_brightness =  (exp(sin(millis()/2000.0*PI)) - 0.36787944)*108.0;
   // change the brightness for next time through the loop:
@@ -159,6 +188,10 @@ void led_effect_breathe_update() {
 
 
   led_breathe.SetHSV(200, 255, breathe_brightness);
+}
+
+void led_effect_breathe_update() {
+  led_compute_breath();
   set_all_leds_to(led_breathe);
   LED.sync();
 }

led_control.h

@@ -11,6 +11,7 @@
 #define LED_MODE_HEATMAP 5
 #define LED_MODE_CHASE 6
 
+#define LED_SPECIAL_MODE_NUMLOCK 100
 #define LED_DATA_PIN  4
 
 #define LED_COUNT 64
@@ -26,7 +27,7 @@ static const int key_led_map[4][16] =
 
 
 void setup_leds();
-void update_leds();
+void update_leds(int numlock_enabled);
 void set_all_leds_to(cRGB color);
 
 void set_led_mode(int mode);
@@ -36,6 +37,7 @@ byte key_to_led(byte row, byte col);
 void set_key_color(byte row, byte col);
 cRGB get_key_color(byte row, byte col);
 
+void led_compute_breath();
 void led_effect_breathe_init();
 void led_effect_rainbow_init();
 void led_effect_chase_init();
@@ -47,6 +49,8 @@ void led_effect_rainbow_update();
 void led_effect_rainbow_wave_update();
 void led_effect_chase_update();
 void led_effect_steady_update();
-void led_Effect_heatmap_update();
+void led_effect_heatmap_update();
+void led_effect_numlock_update();
+
 
 #endif