Merge branch 'master' into debounce_refactor

# Conflicts:
#	tmk_core/common/keyboard.c

29 files changed, 1786 insertions, 100 deletions

diff --git a/tmk_core/common/action.c b/tmk_core/common/action.c
index f7c039f457..b99c2acaa7 100644
--- a/tmk_core/common/action.c
+++ b/tmk_core/common/action.c
@@ -120,7 +120,7 @@ void process_hand_swap(keyevent_t *event) {
 }
 #endif
 
-#if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
+#if !defined(NO_ACTION_LAYER) && !defined(STRICT_LAYER_RELEASE)
 bool disable_action_cache = false;
 
 void process_record_nocache(keyrecord_t *record)
@@ -773,6 +773,13 @@ void register_code(uint8_t code)
     else if IS_CONSUMER(code) {
         host_consumer_send(KEYCODE2CONSUMER(code));
     }
+
+    #ifdef MOUSEKEY_ENABLE
+      else if IS_MOUSEKEY(code) {
+        mousekey_on(code);
+        mousekey_send();
+      }
+    #endif
 }
 
 /** \brief Utilities for actions. (FIXME: Needs better description)
@@ -832,6 +839,24 @@ void unregister_code(uint8_t code)
     else if IS_CONSUMER(code) {
         host_consumer_send(0);
     }
+    #ifdef MOUSEKEY_ENABLE
+      else if IS_MOUSEKEY(code) {
+        mousekey_off(code);
+        mousekey_send();
+      }
+    #endif
+}
+
+/** \brief Utilities for actions. (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+void tap_code(uint8_t code) {
+  register_code(code);
+  #if TAP_CODE_DELAY > 0
+    wait_ms(TAP_CODE_DELAY);
+  #endif
+  unregister_code(code);
 }
 
 /** \brief Utilities for actions. (FIXME: Needs better description)
@@ -874,9 +899,18 @@ void clear_keyboard(void)
  */
 void clear_keyboard_but_mods(void)
 {
+    clear_keys();
+    clear_keyboard_but_mods_and_keys();
+}
+
+/** \brief Utilities for actions. (FIXME: Needs better description)
+ *
+ * FIXME: Needs documentation.
+ */
+void clear_keyboard_but_mods_and_keys()
+{
     clear_weak_mods();
     clear_macro_mods();
-    clear_keys();
     send_keyboard_report();
 #ifdef MOUSEKEY_ENABLE
     mousekey_clear();
diff --git a/tmk_core/common/action.h b/tmk_core/common/action.h
index acc55c7d38..8e47e5339e 100644
--- a/tmk_core/common/action.h
+++ b/tmk_core/common/action.h
@@ -62,7 +62,7 @@ void action_function(keyrecord_t *record, uint8_t id, uint8_t opt);
 bool process_record_quantum(keyrecord_t *record);
 
 /* Utilities for actions.  */
-#if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
+#if !defined(NO_ACTION_LAYER) && !defined(STRICT_LAYER_RELEASE)
 extern bool disable_action_cache;
 #endif
 
@@ -88,11 +88,13 @@ void process_record(keyrecord_t *record);
 void process_action(keyrecord_t *record, action_t action);
 void register_code(uint8_t code);
 void unregister_code(uint8_t code);
+void tap_code(uint8_t code);
 void register_mods(uint8_t mods);
 void unregister_mods(uint8_t mods);
 //void set_mods(uint8_t mods);
 void clear_keyboard(void);
 void clear_keyboard_but_mods(void);
+void clear_keyboard_but_mods_and_keys(void);
 void layer_switch(uint8_t new_layer);
 bool is_tap_key(keypos_t key);
 
diff --git a/tmk_core/common/action_layer.c b/tmk_core/common/action_layer.c
index f3cd381ab0..120ce3f51b 100644
--- a/tmk_core/common/action_layer.c
+++ b/tmk_core/common/action_layer.c
@@ -15,13 +15,22 @@
  */
 uint32_t default_layer_state = 0;
 
+/** \brief Default Layer State Set At user Level
+ *
+ * FIXME: Needs docs
+ */
+__attribute__((weak))
+uint32_t default_layer_state_set_user(uint32_t state) {
+    return state;
+}
+
 /** \brief Default Layer State Set At Keyboard Level
  *
  * FIXME: Needs docs
  */
 __attribute__((weak))
 uint32_t default_layer_state_set_kb(uint32_t state) {
-    return state;
+    return default_layer_state_set_user(state);
 }
 
 /** \brief Default Layer State Set
@@ -35,7 +44,11 @@ static void default_layer_state_set(uint32_t state)
     default_layer_debug(); debug(" to ");
     default_layer_state = state;
     default_layer_debug(); debug("\n");
+#ifdef STRICT_LAYER_RELEASE
     clear_keyboard_but_mods(); // To avoid stuck keys
+#else
+    clear_keyboard_but_mods_and_keys(); // Don't reset held keys
+#endif
 }
 
 /** \brief Default Layer Print
@@ -118,7 +131,11 @@ void layer_state_set(uint32_t state)
     layer_debug(); dprint(" to ");
     layer_state = state;
     layer_debug(); dprintln();
+#ifdef STRICT_LAYER_RELEASE
     clear_keyboard_but_mods(); // To avoid stuck keys
+#else
+    clear_keyboard_but_mods_and_keys(); // Don't reset held keys
+#endif
 }
 
 /** \brief Layer clear
@@ -219,7 +236,7 @@ void layer_debug(void)
 }
 #endif
 
-#if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
+#if !defined(NO_ACTION_LAYER) && !defined(STRICT_LAYER_RELEASE)
 uint8_t source_layers_cache[(MATRIX_ROWS * MATRIX_COLS + 7) / 8][MAX_LAYER_BITS] = {{0}};
 
 void update_source_layers_cache(keypos_t key, uint8_t layer)
@@ -263,7 +280,7 @@ uint8_t read_source_layers_cache(keypos_t key)
  */
 action_t store_or_get_action(bool pressed, keypos_t key)
 {
-#if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
+#if !defined(NO_ACTION_LAYER) && !defined(STRICT_LAYER_RELEASE)
     if (disable_action_cache) {
         return layer_switch_get_action(key);
     }
diff --git a/tmk_core/common/action_layer.h b/tmk_core/common/action_layer.h
index 72a6bd8f68..f1551d2519 100644
--- a/tmk_core/common/action_layer.h
+++ b/tmk_core/common/action_layer.h
@@ -31,6 +31,8 @@ void default_layer_set(uint32_t state);
 
 __attribute__((weak))
 uint32_t default_layer_state_set_kb(uint32_t state);
+__attribute__((weak))
+uint32_t default_layer_state_set_user(uint32_t state);
 
 #ifndef NO_ACTION_LAYER
 /* bitwise operation */
@@ -80,15 +82,13 @@ void layer_xor(uint32_t state);
 #define layer_or(state)
 #define layer_and(state)
 #define layer_xor(state)
+#endif
 
-__attribute__((weak))
 uint32_t layer_state_set_user(uint32_t state);
-__attribute__((weak))
 uint32_t layer_state_set_kb(uint32_t state);
-#endif
 
 /* pressed actions cache */
-#if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
+#if !defined(NO_ACTION_LAYER) && !defined(STRICT_LAYER_RELEASE)
 /* The number of bits needed to represent the layer number: log2(32). */
 #define MAX_LAYER_BITS 5
 void update_source_layers_cache(keypos_t key, uint8_t layer);
diff --git a/tmk_core/common/arm_atsam/bootloader.c b/tmk_core/common/arm_atsam/bootloader.c
new file mode 100644
index 0000000000..ba71bfeb0b
--- /dev/null
+++ b/tmk_core/common/arm_atsam/bootloader.c
@@ -0,0 +1,51 @@
+/* Copyright 2017 Fred Sundvik
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "bootloader.h"
+#include "samd51j18a.h"
+#include "md_bootloader.h"
+
+//Set watchdog timer to reset. Directs the bootloader to stay in programming mode.
+void bootloader_jump(void) {
+#ifdef KEYBOARD_massdrop_ctrl
+    //CTRL keyboards released with bootloader version below must use RAM method. Otherwise use WDT method.
+    uint8_t ver_ram_method[] = "v2.18Jun 22 2018 17:28:08";     //The version to match (NULL terminated by compiler)
+    uint8_t *ver_check = ver_ram_method;                        //Pointer to version match string for traversal
+    uint8_t *ver_rom = (uint8_t *)0x21A0;                       //Pointer to address in ROM where this specific bootloader version would exist
+
+    while (*ver_check && *ver_rom == *ver_check) {              //While there are check version characters to match and bootloader's version matches check's version
+        ver_check++;                                            //Move check version pointer to next character
+        ver_rom++;                                              //Move ROM version pointer to next character
+    }
+
+    if (!*ver_check) {                                          //If check version pointer is NULL, all characters have matched
+        *MAGIC_ADDR = BOOTLOADER_MAGIC;                         //Set magic number into RAM
+        NVIC_SystemReset();                                     //Perform system reset
+        while (1) {}                                            //Won't get here
+    }
+#endif
+
+    WDT->CTRLA.bit.ENABLE = 0;
+    while (WDT->SYNCBUSY.bit.ENABLE) {}
+    while (WDT->CTRLA.bit.ENABLE) {}
+    WDT->CONFIG.bit.WINDOW = 0;
+    WDT->CONFIG.bit.PER = 0;
+    WDT->EWCTRL.bit.EWOFFSET = 0;
+    WDT->CTRLA.bit.ENABLE = 1;
+    while (WDT->SYNCBUSY.bit.ENABLE) {}
+    while (!WDT->CTRLA.bit.ENABLE) {}
+    while (1) {} //Wait on timeout
+}
diff --git a/tmk_core/common/arm_atsam/eeprom.c b/tmk_core/common/arm_atsam/eeprom.c
new file mode 100644
index 0000000000..61cc039efa
--- /dev/null
+++ b/tmk_core/common/arm_atsam/eeprom.c
@@ -0,0 +1,98 @@
+/* Copyright 2017 Fred Sundvik
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "eeprom.h"
+
+#define EEPROM_SIZE 32
+
+static uint8_t buffer[EEPROM_SIZE];
+
+uint8_t eeprom_read_byte(const uint8_t *addr) {
+	uintptr_t offset = (uintptr_t)addr;
+	return buffer[offset];
+}
+
+void eeprom_write_byte(uint8_t *addr, uint8_t value) {
+	uintptr_t offset = (uintptr_t)addr;
+	buffer[offset] = value;
+}
+
+uint16_t eeprom_read_word(const uint16_t *addr) {
+	const uint8_t *p = (const uint8_t *)addr;
+	return eeprom_read_byte(p) | (eeprom_read_byte(p+1) << 8);
+}
+
+uint32_t eeprom_read_dword(const uint32_t *addr) {
+	const uint8_t *p = (const uint8_t *)addr;
+	return eeprom_read_byte(p) | (eeprom_read_byte(p+1) << 8)
+		| (eeprom_read_byte(p+2) << 16) | (eeprom_read_byte(p+3) << 24);
+}
+
+void eeprom_read_block(void *buf, const void *addr, uint32_t len) {
+	const uint8_t *p = (const uint8_t *)addr;
+	uint8_t *dest = (uint8_t *)buf;
+	while (len--) {
+		*dest++ = eeprom_read_byte(p++);
+	}
+}
+
+void eeprom_write_word(uint16_t *addr, uint16_t value) {
+	uint8_t *p = (uint8_t *)addr;
+	eeprom_write_byte(p++, value);
+	eeprom_write_byte(p, value >> 8);
+}
+
+void eeprom_write_dword(uint32_t *addr, uint32_t value) {
+	uint8_t *p = (uint8_t *)addr;
+	eeprom_write_byte(p++, value);
+	eeprom_write_byte(p++, value >> 8);
+	eeprom_write_byte(p++, value >> 16);
+	eeprom_write_byte(p, value >> 24);
+}
+
+void eeprom_write_block(const void *buf, void *addr, uint32_t len) {
+	uint8_t *p = (uint8_t *)addr;
+	const uint8_t *src = (const uint8_t *)buf;
+	while (len--) {
+		eeprom_write_byte(p++, *src++);
+	}
+}
+
+void eeprom_update_byte(uint8_t *addr, uint8_t value) {
+	eeprom_write_byte(addr, value);
+}
+
+void eeprom_update_word(uint16_t *addr, uint16_t value) {
+	uint8_t *p = (uint8_t *)addr;
+	eeprom_write_byte(p++, value);
+	eeprom_write_byte(p, value >> 8);
+}
+
+void eeprom_update_dword(uint32_t *addr, uint32_t value) {
+	uint8_t *p = (uint8_t *)addr;
+	eeprom_write_byte(p++, value);
+	eeprom_write_byte(p++, value >> 8);
+	eeprom_write_byte(p++, value >> 16);
+	eeprom_write_byte(p, value >> 24);
+}
+
+void eeprom_update_block(const void *buf, void *addr, uint32_t len) {
+	uint8_t *p = (uint8_t *)addr;
+	const uint8_t *src = (const uint8_t *)buf;
+	while (len--) {
+		eeprom_write_byte(p++, *src++);
+	}
+}
diff --git a/tmk_core/common/arm_atsam/printf.c b/tmk_core/common/arm_atsam/printf.c
new file mode 100644
index 0000000000..7f298d1fda
--- /dev/null
+++ b/tmk_core/common/arm_atsam/printf.c
@@ -0,0 +1,66 @@
+/*
+Copyright 2018 Massdrop Inc.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifdef CONSOLE_ENABLE
+
+#include "samd51j18a.h"
+#include "arm_atsam_protocol.h"
+#include "printf.h"
+#include <string.h>
+#include <stdarg.h>
+
+void console_printf(char *fmt, ...) {
+    while (udi_hid_con_b_report_trans_ongoing) {}           //Wait for any previous transfers to complete
+
+    static char console_printbuf[CONSOLE_PRINTBUF_SIZE];    //Print and send buffer
+    va_list va;
+    int result;
+
+    va_start(va, fmt);
+    result = vsnprintf(console_printbuf, CONSOLE_PRINTBUF_SIZE, fmt, va);
+    va_end(va);
+
+    uint32_t irqflags;
+    char *pconbuf = console_printbuf;                       //Pointer to start send from
+    int send_out = CONSOLE_EPSIZE;                          //Bytes to send per transfer
+
+    while (result > 0) {                                    //While not error and bytes remain
+        while (udi_hid_con_b_report_trans_ongoing) {}       //Wait for any previous transfers to complete
+
+        irqflags = __get_PRIMASK();
+        __disable_irq();
+        __DMB();
+
+        if (result < CONSOLE_EPSIZE) {                      //If remaining bytes are less than console epsize
+            memset(udi_hid_con_report, 0, CONSOLE_EPSIZE);  //Clear the buffer
+            send_out = result;                              //Send remaining size
+        }
+
+        memcpy(udi_hid_con_report, pconbuf, send_out);      //Copy data into the send buffer
+
+        udi_hid_con_b_report_valid = 1;                     //Set report valid
+        udi_hid_con_send_report();                          //Send report
+
+        __DMB();
+        __set_PRIMASK(irqflags);
+
+        result -= send_out;                                 //Decrement result by bytes sent
+        pconbuf += send_out;                                //Increment buffer point by bytes sent
+    }
+}
+
+#endif //CONSOLE_ENABLE
diff --git a/tmk_core/common/arm_atsam/printf.h b/tmk_core/common/arm_atsam/printf.h
new file mode 100644
index 0000000000..1f1c2280b5
--- /dev/null
+++ b/tmk_core/common/arm_atsam/printf.h
@@ -0,0 +1,11 @@
+#ifndef _PRINTF_H_
+#define _PRINTF_H_
+
+#define CONSOLE_PRINTBUF_SIZE 512
+
+void console_printf(char *fmt, ...);
+
+#define __xprintf console_printf
+
+#endif //_PRINTF_H_
+
diff --git a/tmk_core/common/arm_atsam/suspend.c b/tmk_core/common/arm_atsam/suspend.c
new file mode 100644
index 0000000000..e34965df64
--- /dev/null
+++ b/tmk_core/common/arm_atsam/suspend.c
@@ -0,0 +1,85 @@
+#include "matrix.h"
+#include "i2c_master.h"
+#include "led_matrix.h"
+#include "suspend.h"
+
+/** \brief Suspend idle
+ *
+ * FIXME: needs doc
+ */
+void suspend_idle(uint8_t time) {
+    /* Note: Not used anywhere currently */
+}
+
+/** \brief Run user level Power down
+ *
+ * FIXME: needs doc
+ */
+__attribute__ ((weak))
+void suspend_power_down_user (void) {
+
+}
+
+/** \brief Run keyboard level Power down
+ *
+ * FIXME: needs doc
+ */
+__attribute__ ((weak))
+void suspend_power_down_kb(void) {
+    suspend_power_down_user();
+}
+
+/** \brief Suspend power down
+ *
+ * FIXME: needs doc
+ */
+void suspend_power_down(void)
+{
+    I2C3733_Control_Set(0); //Disable LED driver
+
+    suspend_power_down_kb();
+}
+
+__attribute__ ((weak)) void matrix_power_up(void) {}
+__attribute__ ((weak)) void matrix_power_down(void) {}
+bool suspend_wakeup_condition(void) {
+    matrix_power_up();
+    matrix_scan();
+    matrix_power_down();
+    for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
+        if (matrix_get_row(r)) return true;
+    }
+    return false;
+}
+
+/** \brief run user level code immediately after wakeup
+ *
+ * FIXME: needs doc
+ */
+__attribute__ ((weak))
+void suspend_wakeup_init_user(void) {
+
+}
+
+/** \brief run keyboard level code immediately after wakeup
+ *
+ * FIXME: needs doc
+ */
+__attribute__ ((weak))
+void suspend_wakeup_init_kb(void) {
+    suspend_wakeup_init_user();
+}
+
+/** \brief run immediately after wakeup
+ *
+ * FIXME: needs doc
+ */
+void suspend_wakeup_init(void) {
+    /* If LEDs are set to enabled, enable the hardware */
+    if (led_enabled) {
+        I2C3733_Control_Set(1);
+    }
+
+    suspend_wakeup_init_kb();
+}
+
diff --git a/tmk_core/common/arm_atsam/timer.c b/tmk_core/common/arm_atsam/timer.c
new file mode 100644
index 0000000000..bcfe5002c3
--- /dev/null
+++ b/tmk_core/common/arm_atsam/timer.c
@@ -0,0 +1,59 @@
+#include "samd51j18a.h"
+#include "timer.h"
+#include "tmk_core/protocol/arm_atsam/clks.h"
+
+void set_time(uint64_t tset)
+{
+    ms_clk = tset;
+}
+
+void timer_init(void)
+{
+    ms_clk = 0;
+}
+
+uint16_t timer_read(void)
+{
+    return (uint16_t)ms_clk;
+}
+
+uint32_t timer_read32(void)
+{
+    return (uint32_t)ms_clk;
+}
+
+uint64_t timer_read64(void)
+{
+    return ms_clk;
+}
+
+uint16_t timer_elapsed(uint16_t tlast)
+{
+    return TIMER_DIFF_16(timer_read(), tlast);
+}
+
+uint32_t timer_elapsed32(uint32_t tlast)
+{
+    return TIMER_DIFF_32(timer_read32(), tlast);
+}
+
+uint32_t timer_elapsed64(uint32_t tlast)
+{
+    uint64_t tnow = timer_read64();
+    return (tnow >= tlast ? tnow - tlast : UINT64_MAX - tlast + tnow);
+}
+
+void timer_clear(void)
+{
+    ms_clk = 0;
+}
+
+void wait_ms(uint64_t msec)
+{
+    CLK_delay_ms(msec);
+}
+
+void wait_us(uint16_t usec)
+{
+    CLK_delay_us(usec);
+}
diff --git a/tmk_core/common/avr/suspend.c b/tmk_core/common/avr/suspend.c
index 3d4a48439b..5bca646854 100644
--- a/tmk_core/common/avr/suspend.c
+++ b/tmk_core/common/avr/suspend.c
@@ -10,6 +10,7 @@
 #include "timer.h"
 #include "led.h"
 #include "host.h"
+#include "rgblight_reconfig.h"
 
 #ifdef PROTOCOL_LUFA
 	#include "lufa.h"
@@ -55,6 +56,24 @@ void suspend_idle(uint8_t time)
     sleep_disable();
 }
 
+
+// TODO: This needs some cleanup
+
+/** \brief Run keyboard level Power down
+ *
+ * FIXME: needs doc
+ */
+__attribute__ ((weak))
+void suspend_power_down_user (void) { }
+/** \brief Run keyboard level Power down
+ *
+ * FIXME: needs doc
+ */
+__attribute__ ((weak))
+void suspend_power_down_kb(void) {
+  suspend_power_down_user();
+}
+
 #ifndef NO_SUSPEND_POWER_DOWN
 /** \brief Power down MCU with watchdog timer
  *
@@ -72,21 +91,6 @@ void suspend_idle(uint8_t time)
  */
 static uint8_t wdt_timeout = 0;
 
-/** \brief Run keyboard level Power down
- *
- * FIXME: needs doc
- */
-__attribute__ ((weak))
-void suspend_power_down_user (void) { }
-/** \brief Run keyboard level Power down
- *
- * FIXME: needs doc
- */
-__attribute__ ((weak))
-void suspend_power_down_kb(void) {
-  suspend_power_down_user();
-}
-
 /** \brief Power down
  *
  * FIXME: needs doc
@@ -143,6 +147,8 @@ static void power_down(uint8_t wdto)
  */
 void suspend_power_down(void)
 {
+	suspend_power_down_kb();
+
 #ifndef NO_SUSPEND_POWER_DOWN
     power_down(WDTO_15MS);
 #endif
@@ -189,12 +195,15 @@ void suspend_wakeup_init(void)
 #endif
 	led_set(host_keyboard_leds());
 #if defined(RGBLIGHT_SLEEP) && defined(RGBLIGHT_ENABLE)
+#ifdef BOOTLOADER_TEENSY
+  wait_ms(10);
+#endif
   rgblight_enable_noeeprom();
 #ifdef RGBLIGHT_ANIMATIONS
   rgblight_timer_enable();
 #endif
 #endif
-  suspend_wakeup_init_kb();
+    suspend_wakeup_init_kb();
 }
 
 #ifndef NO_SUSPEND_POWER_DOWN
diff --git a/tmk_core/common/backlight.c b/tmk_core/common/backlight.c
index 3e29aacc49..8ddacd98b6 100644
--- a/tmk_core/common/backlight.c
+++ b/tmk_core/common/backlight.c
@@ -76,12 +76,51 @@ void backlight_decrease(void)
  */
 void backlight_toggle(void)
 {
-    backlight_config.enable ^= 1;
-    if (backlight_config.raw == 1) // enabled but level = 0
-        backlight_config.level = 1;
-    eeconfig_update_backlight(backlight_config.raw);
-    dprintf("backlight toggle: %u\n", backlight_config.enable);
-    backlight_set(backlight_config.enable ? backlight_config.level : 0);
+	bool enabled = backlight_config.enable;
+	dprintf("backlight toggle: %u\n", enabled);
+	if (enabled) 
+		backlight_disable();
+	else
+		backlight_enable();
+}
+
+/** \brief Enable backlight
+ *
+ * FIXME: needs doc
+ */
+void backlight_enable(void)
+{
+	if (backlight_config.enable) return; // do nothing if backlight is already on
+
+	backlight_config.enable = true;
+	if (backlight_config.raw == 1) // enabled but level == 0
+		backlight_config.level = 1;
+	eeconfig_update_backlight(backlight_config.raw);
+	dprintf("backlight enable\n");
+	backlight_set(backlight_config.level);
+}
+
+/** /brief Disable backlight
+ *
+ * FIXME: needs doc
+ */
+void backlight_disable(void)
+{
+	if (!backlight_config.enable) return; // do nothing if backlight is already off
+
+	backlight_config.enable = false;
+	eeconfig_update_backlight(backlight_config.raw);
+	dprintf("backlight disable\n");
+	backlight_set(0);
+}
+
+/** /brief Get the backlight status
+ *
+ * FIXME: needs doc
+ */
+bool is_backlight_enabled(void)
+{
+	return backlight_config.enable;
 }
 
 /** \brief Backlight step through levels
diff --git a/tmk_core/common/backlight.h b/tmk_core/common/backlight.h
index f573092674..420c9d19ed 100644
--- a/tmk_core/common/backlight.h
+++ b/tmk_core/common/backlight.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef BACKLIGHT_H
-#define BACKLIGHT_H
+#pragma once
 
 #include <stdint.h>
 #include <stdbool.h>
@@ -33,9 +32,11 @@ void backlight_init(void);
 void backlight_increase(void);
 void backlight_decrease(void);
 void backlight_toggle(void);
+void backlight_enable(void);
+void backlight_disable(void);
+bool is_backlight_enabled(void);
 void backlight_step(void);
 void backlight_set(uint8_t level);
 void backlight_level(uint8_t level);
 uint8_t get_backlight_level(void);
 
-#endif
diff --git a/tmk_core/common/chibios/eeprom_stm32.c b/tmk_core/common/chibios/eeprom_stm32.c
new file mode 100755
index 0000000000..a869985501
--- /dev/null
+++ b/tmk_core/common/chibios/eeprom_stm32.c
@@ -0,0 +1,673 @@
+/*
+ * This software is experimental and a work in progress.
+ * Under no circumstances should these files be used in relation to any critical system(s).
+ * Use of these files is at your own risk.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * This files are free to use from https://github.com/rogerclarkmelbourne/Arduino_STM32 and
+ * https://github.com/leaflabs/libmaple
+ *
+ * Modifications for QMK and STM32F303 by Yiancar
+ */
+
+#include "eeprom_stm32.h"
+
+    FLASH_Status EE_ErasePage(uint32_t);
+
+    uint16_t EE_CheckPage(uint32_t, uint16_t);
+    uint16_t EE_CheckErasePage(uint32_t, uint16_t);
+    uint16_t EE_Format(void);
+    uint32_t EE_FindValidPage(void);
+    uint16_t EE_GetVariablesCount(uint32_t, uint16_t);
+    uint16_t EE_PageTransfer(uint32_t, uint32_t, uint16_t);
+    uint16_t EE_VerifyPageFullWriteVariable(uint16_t, uint16_t);
+
+    uint32_t PageBase0 = EEPROM_PAGE0_BASE;
+    uint32_t PageBase1 = EEPROM_PAGE1_BASE;
+    uint32_t PageSize = EEPROM_PAGE_SIZE;
+    uint16_t Status = EEPROM_NOT_INIT;
+
+// See http://www.st.com/web/en/resource/technical/document/application_note/CD00165693.pdf
+
+/**
+  * @brief  Check page for blank
+  * @param  page base address
+  * @retval Success or error
+  *     EEPROM_BAD_FLASH:   page not empty after erase
+  *     EEPROM_OK:          page blank
+  */
+uint16_t EE_CheckPage(uint32_t pageBase, uint16_t status)
+{
+    uint32_t pageEnd = pageBase + (uint32_t)PageSize;
+
+    // Page Status not EEPROM_ERASED and not a "state"
+    if ((*(__IO uint16_t*)pageBase) != EEPROM_ERASED && (*(__IO uint16_t*)pageBase) != status)
+        return EEPROM_BAD_FLASH;
+    for(pageBase += 4; pageBase < pageEnd; pageBase += 4)
+        if ((*(__IO uint32_t*)pageBase) != 0xFFFFFFFF)  // Verify if slot is empty
+            return EEPROM_BAD_FLASH;
+    return EEPROM_OK;
+}
+
+/**
+  * @brief  Erase page with increment erase counter (page + 2)
+  * @param  page base address
+  * @retval Success or error
+  *         FLASH_COMPLETE: success erase
+  *         - Flash error code: on write Flash error
+  */
+FLASH_Status EE_ErasePage(uint32_t pageBase)
+{
+    FLASH_Status FlashStatus;
+    uint16_t data = (*(__IO uint16_t*)(pageBase));
+    if ((data == EEPROM_ERASED) || (data == EEPROM_VALID_PAGE) || (data == EEPROM_RECEIVE_DATA))
+        data = (*(__IO uint16_t*)(pageBase + 2)) + 1;
+    else
+        data = 0;
+
+    FlashStatus = FLASH_ErasePage(pageBase);
+    if (FlashStatus == FLASH_COMPLETE)
+        FlashStatus = FLASH_ProgramHalfWord(pageBase + 2, data);
+
+    return FlashStatus;
+}
+
+/**
+  * @brief  Check page for blank and erase it
+  * @param  page base address
+  * @retval Success or error
+  *         - Flash error code: on write Flash error
+  *         - EEPROM_BAD_FLASH: page not empty after erase
+  *         - EEPROM_OK:            page blank
+  */
+uint16_t EE_CheckErasePage(uint32_t pageBase, uint16_t status)
+{
+    uint16_t FlashStatus;
+    if (EE_CheckPage(pageBase, status) != EEPROM_OK)
+    {
+        FlashStatus = EE_ErasePage(pageBase);
+        if (FlashStatus != FLASH_COMPLETE)
+            return FlashStatus;
+        return EE_CheckPage(pageBase, status);
+    }
+    return EEPROM_OK;
+}
+
+/**
+  * @brief  Find valid Page for write or read operation
+  * @param  Page0: Page0 base address
+  *         Page1: Page1 base address
+  * @retval Valid page address (PAGE0 or PAGE1) or NULL in case of no valid page was found
+  */
+uint32_t EE_FindValidPage(void)
+{
+    uint16_t status0 = (*(__IO uint16_t*)PageBase0);        // Get Page0 actual status
+    uint16_t status1 = (*(__IO uint16_t*)PageBase1);        // Get Page1 actual status
+
+    if (status0 == EEPROM_VALID_PAGE && status1 == EEPROM_ERASED)
+        return PageBase0;
+    if (status1 == EEPROM_VALID_PAGE && status0 == EEPROM_ERASED)
+        return PageBase1;
+
+    return 0;
+}
+
+/**
+  * @brief  Calculate unique variables in EEPROM
+  * @param  start: address of first slot to check (page + 4)
+  * @param  end: page end address
+  * @param  address: 16 bit virtual address of the variable to excluse (or 0XFFFF)
+  * @retval count of variables
+  */
+uint16_t EE_GetVariablesCount(uint32_t pageBase, uint16_t skipAddress)
+{
+    uint16_t varAddress, nextAddress;
+    uint32_t idx;
+    uint32_t pageEnd = pageBase + (uint32_t)PageSize;
+    uint16_t count = 0;
+
+    for (pageBase += 6; pageBase < pageEnd; pageBase += 4)
+    {
+        varAddress = (*(__IO uint16_t*)pageBase);
+        if (varAddress == 0xFFFF || varAddress == skipAddress)
+            continue;
+
+        count++;
+        for(idx = pageBase + 4; idx < pageEnd; idx += 4)
+        {
+            nextAddress = (*(__IO uint16_t*)idx);
+            if (nextAddress == varAddress)
+            {
+                count--;
+                break;
+            }
+        }
+    }
+    return count;
+}
+
+/**
+  * @brief  Transfers last updated variables data from the full Page to an empty one.
+  * @param  newPage: new page base address
+  * @param  oldPage: old page base address
+  * @param  SkipAddress: 16 bit virtual address of the variable (or 0xFFFF)
+  * @retval Success or error status:
+  *           - FLASH_COMPLETE: on success
+  *           - EEPROM_OUT_SIZE: if valid new page is full
+  *           - Flash error code: on write Flash error
+  */
+uint16_t EE_PageTransfer(uint32_t newPage, uint32_t oldPage, uint16_t SkipAddress)
+{
+    uint32_t oldEnd, newEnd;
+    uint32_t oldIdx, newIdx, idx;
+    uint16_t address, data, found;
+    FLASH_Status FlashStatus;
+
+    // Transfer process: transfer variables from old to the new active page
+    newEnd = newPage + ((uint32_t)PageSize);
+
+    // Find first free element in new page
+    for (newIdx = newPage + 4; newIdx < newEnd; newIdx += 4)
+        if ((*(__IO uint32_t*)newIdx) == 0xFFFFFFFF)    // Verify if element
+            break;                                  //  contents are 0xFFFFFFFF
+    if (newIdx >= newEnd)
+        return EEPROM_OUT_SIZE;
+
+    oldEnd = oldPage + 4;
+    oldIdx = oldPage + (uint32_t)(PageSize - 2);
+
+    for (; oldIdx > oldEnd; oldIdx -= 4)
+    {
+        address = *(__IO uint16_t*)oldIdx;
+        if (address == 0xFFFF || address == SkipAddress)
+            continue;                       // it's means that power off after write data
+
+        found = 0;
+        for (idx = newPage + 6; idx < newIdx; idx += 4)
+            if ((*(__IO uint16_t*)(idx)) == address)
+            {
+                found = 1;
+                break;
+            }
+
+        if (found)
+            continue;
+
+        if (newIdx < newEnd)
+        {
+            data = (*(__IO uint16_t*)(oldIdx - 2));
+
+            FlashStatus = FLASH_ProgramHalfWord(newIdx, data);
+            if (FlashStatus != FLASH_COMPLETE)
+                return FlashStatus;
+
+            FlashStatus = FLASH_ProgramHalfWord(newIdx + 2, address);
+            if (FlashStatus != FLASH_COMPLETE)
+                return FlashStatus;
+
+            newIdx += 4;
+        }
+        else
+            return EEPROM_OUT_SIZE;
+    }
+
+    // Erase the old Page: Set old Page status to EEPROM_EEPROM_ERASED status
+    data = EE_CheckErasePage(oldPage, EEPROM_ERASED);
+    if (data != EEPROM_OK)
+        return data;
+
+    // Set new Page status
+    FlashStatus = FLASH_ProgramHalfWord(newPage, EEPROM_VALID_PAGE);
+    if (FlashStatus != FLASH_COMPLETE)
+        return FlashStatus;
+
+    return EEPROM_OK;
+}
+
+/**
+  * @brief  Verify if active page is full and Writes variable in EEPROM.
+  * @param  Address: 16 bit virtual address of the variable
+  * @param  Data: 16 bit data to be written as variable value
+  * @retval Success or error status:
+  *           - FLASH_COMPLETE: on success
+  *           - EEPROM_PAGE_FULL: if valid page is full (need page transfer)
+  *           - EEPROM_NO_VALID_PAGE: if no valid page was found
+  *           - EEPROM_OUT_SIZE: if EEPROM size exceeded
+  *           - Flash error code: on write Flash error
+  */
+uint16_t EE_VerifyPageFullWriteVariable(uint16_t Address, uint16_t Data)
+{
+    FLASH_Status FlashStatus;
+    uint32_t idx, pageBase, pageEnd, newPage;
+    uint16_t count;
+
+    // Get valid Page for write operation
+    pageBase = EE_FindValidPage();
+    if (pageBase == 0)
+        return  EEPROM_NO_VALID_PAGE;
+
+    // Get the valid Page end Address
+    pageEnd = pageBase + PageSize;          // Set end of page
+
+    for (idx = pageEnd - 2; idx > pageBase; idx -= 4)
+    {
+        if ((*(__IO uint16_t*)idx) == Address)      // Find last value for address
+        {
+            count = (*(__IO uint16_t*)(idx - 2));   // Read last data
+            if (count == Data)
+                return EEPROM_OK;
+            if (count == 0xFFFF)
+            {
+                FlashStatus = FLASH_ProgramHalfWord(idx - 2, Data); // Set variable data
+                if (FlashStatus == FLASH_COMPLETE)
+                    return EEPROM_OK;
+            }
+            break;
+        }
+    }
+
+    // Check each active page address starting from begining
+    for (idx = pageBase + 4; idx < pageEnd; idx += 4)
+        if ((*(__IO uint32_t*)idx) == 0xFFFFFFFF)               // Verify if element
+        {                                                   //  contents are 0xFFFFFFFF
+            FlashStatus = FLASH_ProgramHalfWord(idx, Data); // Set variable data
+            if (FlashStatus != FLASH_COMPLETE)
+                return FlashStatus;
+            FlashStatus = FLASH_ProgramHalfWord(idx + 2, Address);  // Set variable virtual address
+            if (FlashStatus != FLASH_COMPLETE)
+                return FlashStatus;
+            return EEPROM_OK;
+        }
+
+    // Empty slot not found, need page transfer
+    // Calculate unique variables in page
+    count = EE_GetVariablesCount(pageBase, Address) + 1;
+    if (count >= (PageSize / 4 - 1))
+        return EEPROM_OUT_SIZE;
+
+    if (pageBase == PageBase1)
+        newPage = PageBase0;        // New page address where variable will be moved to
+    else
+        newPage = PageBase1;
+
+    // Set the new Page status to RECEIVE_DATA status
+    FlashStatus = FLASH_ProgramHalfWord(newPage, EEPROM_RECEIVE_DATA);
+    if (FlashStatus != FLASH_COMPLETE)
+        return FlashStatus;
+
+    // Write the variable passed as parameter in the new active page
+    FlashStatus = FLASH_ProgramHalfWord(newPage + 4, Data);
+    if (FlashStatus != FLASH_COMPLETE)
+        return FlashStatus;
+
+    FlashStatus = FLASH_ProgramHalfWord(newPage + 6, Address);
+    if (FlashStatus != FLASH_COMPLETE)
+        return FlashStatus;
+
+    return EE_PageTransfer(newPage, pageBase, Address);
+}
+
+/*EEPROMClass::EEPROMClass(void)
+{
+    PageBase0 = EEPROM_PAGE0_BASE;
+    PageBase1 = EEPROM_PAGE1_BASE;
+    PageSize = EEPROM_PAGE_SIZE;
+    Status = EEPROM_NOT_INIT;
+}*/
+/*
+uint16_t EEPROM_init(uint32_t pageBase0, uint32_t pageBase1, uint32_t pageSize)
+{
+    PageBase0 = pageBase0;
+    PageBase1 = pageBase1;
+    PageSize = pageSize;
+    return EEPROM_init();
+}*/
+
+uint16_t EEPROM_init(void)
+{
+    uint16_t status0 = 6, status1 = 6;
+    FLASH_Status FlashStatus;
+
+    FLASH_Unlock();
+    Status = EEPROM_NO_VALID_PAGE;
+
+    status0 = (*(__IO uint16_t *)PageBase0);
+    status1 = (*(__IO uint16_t *)PageBase1);
+
+    switch (status0)
+    {
+/*
+        Page0               Page1
+        -----               -----
+    EEPROM_ERASED       EEPROM_VALID_PAGE           Page1 valid, Page0 erased
+                        EEPROM_RECEIVE_DATA         Page1 need set to valid, Page0 erased
+                        EEPROM_ERASED               make EE_Format
+                        any                         Error: EEPROM_NO_VALID_PAGE
+*/
+    case EEPROM_ERASED:
+        if (status1 == EEPROM_VALID_PAGE)           // Page0 erased, Page1 valid
+            Status = EE_CheckErasePage(PageBase0, EEPROM_ERASED);
+        else if (status1 == EEPROM_RECEIVE_DATA)    // Page0 erased, Page1 receive
+        {
+            FlashStatus = FLASH_ProgramHalfWord(PageBase1, EEPROM_VALID_PAGE);
+            if (FlashStatus != FLASH_COMPLETE)
+                Status = FlashStatus;
+            else
+                Status = EE_CheckErasePage(PageBase0, EEPROM_ERASED);
+        }
+        else if (status1 == EEPROM_ERASED)          // Both in erased state so format EEPROM
+            Status = EEPROM_format();
+        break;
+/*
+        Page0               Page1
+        -----               -----
+    EEPROM_RECEIVE_DATA EEPROM_VALID_PAGE           Transfer Page1 to Page0
+                        EEPROM_ERASED               Page0 need set to valid, Page1 erased
+                        any                         EEPROM_NO_VALID_PAGE
+*/
+    case EEPROM_RECEIVE_DATA:
+        if (status1 == EEPROM_VALID_PAGE)           // Page0 receive, Page1 valid
+            Status = EE_PageTransfer(PageBase0, PageBase1, 0xFFFF);
+        else if (status1 == EEPROM_ERASED)          // Page0 receive, Page1 erased
+        {
+            Status = EE_CheckErasePage(PageBase1, EEPROM_ERASED);
+            if (Status == EEPROM_OK)
+            {
+                FlashStatus = FLASH_ProgramHalfWord(PageBase0, EEPROM_VALID_PAGE);
+                if (FlashStatus != FLASH_COMPLETE)
+                    Status = FlashStatus;
+                else
+                    Status = EEPROM_OK;
+            }
+        }
+        break;
+/*
+        Page0               Page1
+        -----               -----
+    EEPROM_VALID_PAGE   EEPROM_VALID_PAGE           Error: EEPROM_NO_VALID_PAGE
+                        EEPROM_RECEIVE_DATA         Transfer Page0 to Page1
+                        any                         Page0 valid, Page1 erased
+*/
+    case EEPROM_VALID_PAGE:
+        if (status1 == EEPROM_VALID_PAGE)           // Both pages valid
+            Status = EEPROM_NO_VALID_PAGE;
+        else if (status1 == EEPROM_RECEIVE_DATA)
+            Status = EE_PageTransfer(PageBase1, PageBase0, 0xFFFF);
+        else
+            Status = EE_CheckErasePage(PageBase1, EEPROM_ERASED);
+        break;
+/*
+        Page0               Page1
+        -----               -----
+        any             EEPROM_VALID_PAGE           Page1 valid, Page0 erased
+                        EEPROM_RECEIVE_DATA         Page1 valid, Page0 erased
+                        any                         EEPROM_NO_VALID_PAGE
+*/
+    default:
+        if (status1 == EEPROM_VALID_PAGE)
+            Status = EE_CheckErasePage(PageBase0, EEPROM_ERASED);   // Check/Erase Page0
+        else if (status1 == EEPROM_RECEIVE_DATA)
+        {
+            FlashStatus = FLASH_ProgramHalfWord(PageBase1, EEPROM_VALID_PAGE);
+            if (FlashStatus != FLASH_COMPLETE)
+                Status = FlashStatus;
+            else
+                Status = EE_CheckErasePage(PageBase0, EEPROM_ERASED);
+        }
+        break;
+    }
+    return Status;
+}
+
+/**
+  * @brief  Erases PAGE0 and PAGE1 and writes EEPROM_VALID_PAGE / 0 header to PAGE0
+  * @param  PAGE0 and PAGE1 base addresses
+  * @retval Status of the last operation (Flash write or erase) done during EEPROM formating
+  */
+uint16_t EEPROM_format(void)
+{
+    uint16_t status;
+    FLASH_Status FlashStatus;
+
+    FLASH_Unlock();
+
+    // Erase Page0
+    status = EE_CheckErasePage(PageBase0, EEPROM_VALID_PAGE);
+    if (status != EEPROM_OK)
+        return status;
+    if ((*(__IO uint16_t*)PageBase0) == EEPROM_ERASED)
+    {
+        // Set Page0 as valid page: Write VALID_PAGE at Page0 base address
+        FlashStatus = FLASH_ProgramHalfWord(PageBase0, EEPROM_VALID_PAGE);
+        if (FlashStatus != FLASH_COMPLETE)
+            return FlashStatus;
+    }
+    // Erase Page1
+    return EE_CheckErasePage(PageBase1, EEPROM_ERASED);
+}
+
+/**
+  * @brief  Returns the erase counter for current page
+  * @param  Data: Global variable contains the read variable value
+  * @retval Success or error status:
+  *         - EEPROM_OK: if erases counter return.
+  *         - EEPROM_NO_VALID_PAGE: if no valid page was found.
+  */
+uint16_t EEPROM_erases(uint16_t *Erases)
+{
+    uint32_t pageBase;
+    if (Status != EEPROM_OK)
+        if (EEPROM_init() != EEPROM_OK)
+            return Status;
+
+    // Get active Page for read operation
+    pageBase = EE_FindValidPage();
+    if (pageBase == 0)
+        return  EEPROM_NO_VALID_PAGE;
+
+    *Erases = (*(__IO uint16_t*)pageBase+2);
+    return EEPROM_OK;
+}
+
+/**
+  * @brief  Returns the last stored variable data, if found,
+  *         which correspond to the passed virtual address
+  * @param  Address: Variable virtual address
+  * @retval Data for variable or EEPROM_DEFAULT_DATA, if any errors
+  */
+/*
+uint16_t EEPROM_read (uint16_t Address)
+{
+    uint16_t data;
+    EEPROM_read(Address, &data);
+    return data;
+}*/
+
+/**
+  * @brief  Returns the last stored variable data, if found,
+  *         which correspond to the passed virtual address
+  * @param  Address: Variable virtual address
+  * @param  Data: Pointer to data variable
+  * @retval Success or error status:
+  *           - EEPROM_OK: if variable was found
+  *           - EEPROM_BAD_ADDRESS: if the variable was not found
+  *           - EEPROM_NO_VALID_PAGE: if no valid page was found.
+  */
+uint16_t EEPROM_read(uint16_t Address, uint16_t *Data)
+{
+    uint32_t pageBase, pageEnd;
+
+    // Set default data (empty EEPROM)
+    *Data = EEPROM_DEFAULT_DATA;
+
+    if (Status == EEPROM_NOT_INIT)
+        if (EEPROM_init() != EEPROM_OK)
+            return Status;
+
+    // Get active Page for read operation
+    pageBase = EE_FindValidPage();
+    if (pageBase == 0)
+        return  EEPROM_NO_VALID_PAGE;
+
+    // Get the valid Page end Address
+    pageEnd = pageBase + ((uint32_t)(PageSize - 2));
+
+    // Check each active page address starting from end
+    for (pageBase += 6; pageEnd >= pageBase; pageEnd -= 4)
+        if ((*(__IO uint16_t*)pageEnd) == Address)      // Compare the read address with the virtual address
+        {
+            *Data = (*(__IO uint16_t*)(pageEnd - 2));       // Get content of Address-2 which is variable value
+            return EEPROM_OK;
+        }
+
+    // Return ReadStatus value: (0: variable exist, 1: variable doesn't exist)
+    return EEPROM_BAD_ADDRESS;
+}
+
+/**
+  * @brief  Writes/upadtes variable data in EEPROM.
+  * @param  VirtAddress: Variable virtual address
+  * @param  Data: 16 bit data to be written
+  * @retval Success or error status:
+  *         - FLASH_COMPLETE: on success
+  *         - EEPROM_BAD_ADDRESS: if address = 0xFFFF
+  *         - EEPROM_PAGE_FULL: if valid page is full
+  *         - EEPROM_NO_VALID_PAGE: if no valid page was found
+  *         - EEPROM_OUT_SIZE: if no empty EEPROM variables
+  *         - Flash error code: on write Flash error
+  */
+uint16_t EEPROM_write(uint16_t Address, uint16_t Data)
+{
+    if (Status == EEPROM_NOT_INIT)
+        if (EEPROM_init() != EEPROM_OK)
+            return Status;
+
+    if (Address == 0xFFFF)
+        return EEPROM_BAD_ADDRESS;
+
+    // Write the variable virtual address and value in the EEPROM
+    uint16_t status = EE_VerifyPageFullWriteVariable(Address, Data);
+    return status;
+}
+
+/**
+  * @brief  Writes/upadtes variable data in EEPROM.
+            The value is written only if differs from the one already saved at the same address.
+  * @param  VirtAddress: Variable virtual address
+  * @param  Data: 16 bit data to be written
+  * @retval Success or error status:
+  *         - EEPROM_SAME_VALUE: If new Data matches existing EEPROM Data
+  *         - FLASH_COMPLETE: on success
+  *         - EEPROM_BAD_ADDRESS: if address = 0xFFFF
+  *         - EEPROM_PAGE_FULL: if valid page is full
+  *         - EEPROM_NO_VALID_PAGE: if no valid page was found
+  *         - EEPROM_OUT_SIZE: if no empty EEPROM variables
+  *         - Flash error code: on write Flash error
+  */
+uint16_t EEPROM_update(uint16_t Address, uint16_t Data)
+{
+    uint16_t temp;
+    EEPROM_read(Address, &temp);
+    if (temp == Data)
+        return EEPROM_SAME_VALUE;
+    else
+        return EEPROM_write(Address, Data);
+}
+
+/**
+  * @brief  Return number of variable
+  * @retval Number of variables
+  */
+uint16_t EEPROM_count(uint16_t *Count)
+{
+    if (Status == EEPROM_NOT_INIT)
+        if (EEPROM_init() != EEPROM_OK)
+            return Status;
+
+    // Get valid Page for write operation
+    uint32_t pageBase = EE_FindValidPage();
+    if (pageBase == 0)
+        return EEPROM_NO_VALID_PAGE;    // No valid page, return max. numbers
+
+    *Count = EE_GetVariablesCount(pageBase, 0xFFFF);
+    return EEPROM_OK;
+}
+
+uint16_t EEPROM_maxcount(void)
+{
+    return ((PageSize / 4)-1);
+}
+
+
+uint8_t eeprom_read_byte (const uint8_t *Address)
+{
+    const uint16_t p = (const uint32_t) Address;
+    uint16_t temp;
+    EEPROM_read(p, &temp);
+    return (uint8_t) temp;
+}
+
+void eeprom_write_byte (uint8_t *Address, uint8_t Value)
+{
+    uint16_t p = (uint32_t) Address;
+    EEPROM_write(p, (uint16_t) Value);
+}
+
+void eeprom_update_byte (uint8_t *Address, uint8_t Value)
+{
+    uint16_t p = (uint32_t) Address;
+    EEPROM_update(p, (uint16_t) Value);
+}
+
+uint16_t eeprom_read_word (const uint16_t *Address)
+{
+    const uint16_t p = (const uint32_t) Address;
+    uint16_t temp;
+    EEPROM_read(p, &temp);
+    return temp;
+}
+
+void eeprom_write_word (uint16_t *Address, uint16_t Value)
+{
+    uint16_t p = (uint32_t) Address;
+    EEPROM_write(p, Value);
+}
+
+void eeprom_update_word (uint16_t *Address, uint16_t Value)
+{
+    uint16_t p = (uint32_t) Address;
+    EEPROM_update(p, Value);
+}
+
+uint32_t eeprom_read_dword (const uint32_t *Address)
+{
+    const uint16_t p = (const uint32_t) Address;
+    uint16_t temp1, temp2;
+    EEPROM_read(p, &temp1);
+    EEPROM_read(p + 1, &temp2);
+    return temp1 | (temp2 << 16);
+}
+
+void eeprom_write_dword (uint32_t *Address, uint32_t Value)
+{
+    uint16_t temp = (uint16_t) Value;
+    uint16_t p = (uint32_t) Address;
+    EEPROM_write(p, temp);
+    temp = (uint16_t) (Value >> 16);
+    EEPROM_write(p + 1, temp);
+}
+
+void eeprom_update_dword (uint32_t *Address, uint32_t Value)
+{
+    uint16_t temp = (uint16_t) Value;
+    uint16_t p = (uint32_t) Address;
+    EEPROM_update(p, temp);
+    temp = (uint16_t) (Value >> 16);
+    EEPROM_update(p + 1, temp);
+}
diff --git a/tmk_core/common/chibios/eeprom_stm32.h b/tmk_core/common/chibios/eeprom_stm32.h
new file mode 100755
index 0000000000..09229530ca
--- /dev/null
+++ b/tmk_core/common/chibios/eeprom_stm32.h
@@ -0,0 +1,95 @@
+/*
+ * This software is experimental and a work in progress.
+ * Under no circumstances should these files be used in relation to any critical system(s).
+ * Use of these files is at your own risk.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * This files are free to use from https://github.com/rogerclarkmelbourne/Arduino_STM32 and
+ * https://github.com/leaflabs/libmaple
+ *
+ * Modifications for QMK and STM32F303 by Yiancar
+ */
+
+// This file must be modified if the MCU is not defined below.
+// This library also assumes that the pages are not used by the firmware.
+
+#ifndef __EEPROM_H
+#define __EEPROM_H
+
+#include "ch.h"
+#include "hal.h"
+#include "flash_stm32.h"
+
+// HACK ALERT. This definition may not match your processor
+// To Do. Work out correct value for EEPROM_PAGE_SIZE on the STM32F103CT6 etc
+#if defined(EEPROM_EMU_STM32F303xC)
+  #define MCU_STM32F303CC
+#elif defined(EEPROM_EMU_STM32F103xB)
+  #define MCU_STM32F103RB
+#else
+  #error "not implemented."
+#endif
+
+#ifndef EEPROM_PAGE_SIZE
+    #if defined (MCU_STM32F103RB)
+        #define EEPROM_PAGE_SIZE    (uint16_t)0x400  /* Page size = 1KByte */
+    #elif defined (MCU_STM32F103ZE) || defined (MCU_STM32F103RE) || defined (MCU_STM32F103RD) || defined (MCU_STM32F303CC)
+        #define EEPROM_PAGE_SIZE    (uint16_t)0x800  /* Page size = 2KByte */
+    #else
+        #error  "No MCU type specified. Add something like -DMCU_STM32F103RB to your compiler arguments (probably in a Makefile)."
+    #endif
+#endif
+
+#ifndef EEPROM_START_ADDRESS
+    #if defined (MCU_STM32F103RB)
+        #define EEPROM_START_ADDRESS    ((uint32_t)(0x8000000 + 128 * 1024 - 2 * EEPROM_PAGE_SIZE))
+    #elif defined (MCU_STM32F103ZE) || defined (MCU_STM32F103RE)
+        #define EEPROM_START_ADDRESS    ((uint32_t)(0x8000000 + 512 * 1024 - 2 * EEPROM_PAGE_SIZE))
+    #elif defined (MCU_STM32F103RD)
+        #define EEPROM_START_ADDRESS    ((uint32_t)(0x8000000 + 384 * 1024 - 2 * EEPROM_PAGE_SIZE))
+    #elif defined (MCU_STM32F303CC)
+        #define EEPROM_START_ADDRESS    ((uint32_t)(0x8000000 + 256 * 1024 - 2 * EEPROM_PAGE_SIZE))
+    #else
+        #error  "No MCU type specified. Add something like -DMCU_STM32F103RB to your compiler arguments (probably in a Makefile)."
+    #endif
+#endif
+
+/* Pages 0 and 1 base and end addresses */
+#define EEPROM_PAGE0_BASE       ((uint32_t)(EEPROM_START_ADDRESS + 0x000))
+#define EEPROM_PAGE1_BASE       ((uint32_t)(EEPROM_START_ADDRESS + EEPROM_PAGE_SIZE))
+
+/* Page status definitions */
+#define EEPROM_ERASED           ((uint16_t)0xFFFF)  /* PAGE is empty */
+#define EEPROM_RECEIVE_DATA     ((uint16_t)0xEEEE)  /* PAGE is marked to receive data */
+#define EEPROM_VALID_PAGE       ((uint16_t)0x0000)  /* PAGE containing valid data */
+
+/* Page full define */
+enum uint16_t
+    {
+    EEPROM_OK               = ((uint16_t)0x0000),
+    EEPROM_OUT_SIZE         = ((uint16_t)0x0081),
+    EEPROM_BAD_ADDRESS      = ((uint16_t)0x0082),
+    EEPROM_BAD_FLASH        = ((uint16_t)0x0083),
+    EEPROM_NOT_INIT         = ((uint16_t)0x0084),
+    EEPROM_SAME_VALUE       = ((uint16_t)0x0085),
+    EEPROM_NO_VALID_PAGE    = ((uint16_t)0x00AB)
+    };
+
+#define EEPROM_DEFAULT_DATA     0xFFFF
+
+    uint16_t EEPROM_init(void);
+    uint16_t EEPROM_format(void);
+    uint16_t EEPROM_erases(uint16_t *);
+    uint16_t EEPROM_read (uint16_t address, uint16_t *data);
+    uint16_t EEPROM_write(uint16_t address, uint16_t data);
+    uint16_t EEPROM_update(uint16_t address, uint16_t data);
+    uint16_t EEPROM_count(uint16_t *);
+    uint16_t EEPROM_maxcount(void);
+
+#endif  /* __EEPROM_H */
diff --git a/tmk_core/common/chibios/eeprom.c b/tmk_core/common/chibios/eeprom_teensy.c
index 9061b790c4..9061b790c4 100644
--- a/tmk_core/common/chibios/eeprom.c
+++ b/tmk_core/common/chibios/eeprom_teensy.c
diff --git a/tmk_core/common/chibios/flash_stm32.c b/tmk_core/common/chibios/flash_stm32.c
new file mode 100755
index 0000000000..2735934844
--- /dev/null
+++ b/tmk_core/common/chibios/flash_stm32.c
@@ -0,0 +1,188 @@
+/*
+ * This software is experimental and a work in progress.
+ * Under no circumstances should these files be used in relation to any critical system(s).
+ * Use of these files is at your own risk.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * This files are free to use from https://github.com/rogerclarkmelbourne/Arduino_STM32 and
+ * https://github.com/leaflabs/libmaple
+ *
+ * Modifications for QMK and STM32F303 by Yiancar
+ */
+
+#if defined(EEPROM_EMU_STM32F303xC)
+    #define STM32F303xC
+    #include "stm32f3xx.h"
+#elif defined(EEPROM_EMU_STM32F103xB)
+    #define STM32F103xB
+    #include "stm32f1xx.h"
+#else
+    #error "not implemented."
+#endif
+
+#include "flash_stm32.h"
+
+#if defined(EEPROM_EMU_STM32F103xB)
+    #define FLASH_SR_WRPERR FLASH_SR_WRPRTERR
+#endif
+
+/* Delay definition */
+#define EraseTimeout        ((uint32_t)0x00000FFF)
+#define ProgramTimeout      ((uint32_t)0x0000001F)
+
+#define ASSERT(exp) (void)((0))
+
+/**
+  * @brief  Inserts a time delay.
+  * @param  None
+  * @retval None
+  */
+static void delay(void)
+{
+    __IO uint32_t i = 0;
+    for(i = 0xFF; i != 0; i--) { }
+}
+
+/**
+  * @brief  Returns the FLASH Status.
+  * @param  None
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
+  *   FLASH_ERROR_WRP or FLASH_COMPLETE
+  */
+FLASH_Status FLASH_GetStatus(void)
+{
+    if ((FLASH->SR & FLASH_SR_BSY) == FLASH_SR_BSY)
+        return FLASH_BUSY;
+
+    if ((FLASH->SR & FLASH_SR_PGERR) != 0)
+        return FLASH_ERROR_PG;
+
+    if ((FLASH->SR & FLASH_SR_WRPERR) != 0 )
+        return FLASH_ERROR_WRP;
+
+    if ((FLASH->SR & FLASH_OBR_OPTERR) != 0 )
+        return FLASH_ERROR_OPT;
+
+    return FLASH_COMPLETE;
+}
+
+/**
+  * @brief  Waits for a Flash operation to complete or a TIMEOUT to occur.
+  * @param  Timeout: FLASH progamming Timeout
+  * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
+  *   FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
+  */
+FLASH_Status FLASH_WaitForLastOperation(uint32_t Timeout)
+{
+    FLASH_Status status;
+
+    /* Check for the Flash Status */
+    status = FLASH_GetStatus();
+    /* Wait for a Flash operation to complete or a TIMEOUT to occur */
+    while ((status == FLASH_BUSY) && (Timeout != 0x00))
+    {
+        delay();
+        status = FLASH_GetStatus();
+        Timeout--;
+    }
+    if (Timeout == 0)
+        status = FLASH_TIMEOUT;
+    /* Return the operation status */
+    return status;
+}
+
+/**
+  * @brief  Erases a specified FLASH page.
+  * @param  Page_Address: The page address to be erased.
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
+  *   FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
+  */
+FLASH_Status FLASH_ErasePage(uint32_t Page_Address)
+{
+    FLASH_Status status = FLASH_COMPLETE;
+    /* Check the parameters */
+    ASSERT(IS_FLASH_ADDRESS(Page_Address));
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation(EraseTimeout);
+
+    if(status == FLASH_COMPLETE)
+    {
+        /* if the previous operation is completed, proceed to erase the page */
+        FLASH->CR |= FLASH_CR_PER;
+        FLASH->AR = Page_Address;
+        FLASH->CR |= FLASH_CR_STRT;
+
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperation(EraseTimeout);
+        if(status != FLASH_TIMEOUT)
+        {
+            /* if the erase operation is completed, disable the PER Bit */
+            FLASH->CR &= ~FLASH_CR_PER;
+        }
+        FLASH->SR = (FLASH_SR_EOP | FLASH_SR_PGERR | FLASH_SR_WRPERR);
+    }
+    /* Return the Erase Status */
+    return status;
+}
+
+/**
+  * @brief  Programs a half word at a specified address.
+  * @param  Address: specifies the address to be programmed.
+  * @param  Data: specifies the data to be programmed.
+  * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
+  *   FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
+  */
+FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data)
+{
+    FLASH_Status status = FLASH_BAD_ADDRESS;
+
+    if (IS_FLASH_ADDRESS(Address))
+    {
+        /* Wait for last operation to be completed */
+        status = FLASH_WaitForLastOperation(ProgramTimeout);
+        if(status == FLASH_COMPLETE)
+        {
+            /* if the previous operation is completed, proceed to program the new data */
+            FLASH->CR |= FLASH_CR_PG;
+            *(__IO uint16_t*)Address = Data;
+            /* Wait for last operation to be completed */
+            status = FLASH_WaitForLastOperation(ProgramTimeout);
+            if(status != FLASH_TIMEOUT)
+            {
+                /* if the program operation is completed, disable the PG Bit */
+                FLASH->CR &= ~FLASH_CR_PG;
+            }
+            FLASH->SR = (FLASH_SR_EOP | FLASH_SR_PGERR | FLASH_SR_WRPERR);
+        }
+    }
+    return status;
+}
+
+/**
+  * @brief  Unlocks the FLASH Program Erase Controller.
+  * @param  None
+  * @retval None
+  */
+void FLASH_Unlock(void)
+{
+    /* Authorize the FPEC Access */
+    FLASH->KEYR = FLASH_KEY1;
+    FLASH->KEYR = FLASH_KEY2;
+}
+
+/**
+  * @brief  Locks the FLASH Program Erase Controller.
+  * @param  None
+  * @retval None
+  */
+void FLASH_Lock(void)
+{
+    /* Set the Lock Bit to lock the FPEC and the FCR */
+    FLASH->CR |= FLASH_CR_LOCK;
+}
diff --git a/tmk_core/common/chibios/flash_stm32.h b/tmk_core/common/chibios/flash_stm32.h
new file mode 100755
index 0000000000..cc065cbca2
--- /dev/null
+++ b/tmk_core/common/chibios/flash_stm32.h
@@ -0,0 +1,53 @@
+/*
+ * This software is experimental and a work in progress.
+ * Under no circumstances should these files be used in relation to any critical system(s).
+ * Use of these files is at your own risk.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * This files are free to use from https://github.com/rogerclarkmelbourne/Arduino_STM32 and 
+ * https://github.com/leaflabs/libmaple
+ *
+ * Modifications for QMK and STM32F303 by Yiancar
+ */
+
+#ifndef __FLASH_STM32_H
+#define __FLASH_STM32_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#include "ch.h"
+#include "hal.h"
+
+typedef enum
+    {
+    FLASH_BUSY = 1,
+    FLASH_ERROR_PG,
+    FLASH_ERROR_WRP,
+    FLASH_ERROR_OPT,
+    FLASH_COMPLETE,
+    FLASH_TIMEOUT,
+    FLASH_BAD_ADDRESS
+    } FLASH_Status;
+
+#define IS_FLASH_ADDRESS(ADDRESS) (((ADDRESS) >= 0x08000000) && ((ADDRESS) < 0x0807FFFF))
+
+FLASH_Status FLASH_WaitForLastOperation(uint32_t Timeout);
+FLASH_Status FLASH_ErasePage(uint32_t Page_Address);
+FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data);
+
+void FLASH_Unlock(void);
+void FLASH_Lock(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __FLASH_STM32_H */
diff --git a/tmk_core/common/command.c b/tmk_core/common/command.c
index f79d5a257b..aab99290d2 100644
--- a/tmk_core/common/command.c
+++ b/tmk_core/common/command.c
@@ -181,7 +181,11 @@ static void print_version(void)
     print("VID: " STR(VENDOR_ID) "(" STR(MANUFACTURER) ") "
           "PID: " STR(PRODUCT_ID) "(" STR(PRODUCT) ") "
           "VER: " STR(DEVICE_VER) "\n");
+#ifdef SKIP_VERSION
+    print("BUILD:  (" __DATE__ ")\n");
+#else
     print("BUILD: " STR(QMK_VERSION) " (" __TIME__ " " __DATE__ ")\n");
+#endif
 
     /* build options */
     print("OPTIONS:"
diff --git a/tmk_core/common/command.h b/tmk_core/common/command.h
index d9d89ba0f1..c38f2b9e80 100644
--- a/tmk_core/common/command.h
+++ b/tmk_core/common/command.h
@@ -15,8 +15,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef COMMAND_H
-#define COMMAND
+#pragma once
 
 /* FIXME: Add doxygen comments for the behavioral defines in here. */
 
@@ -155,5 +154,3 @@ bool command_proc(uint8_t code);
 
 #define XMAGIC_KC(key) KC_##key
 #define MAGIC_KC(key) XMAGIC_KC(key)
-
-#endif
diff --git a/tmk_core/common/eeconfig.c b/tmk_core/common/eeconfig.c
index 3e5987ee3b..d8bab7d2e5 100644
--- a/tmk_core/common/eeconfig.c
+++ b/tmk_core/common/eeconfig.c
@@ -3,29 +3,59 @@
 #include "eeprom.h"
 #include "eeconfig.h"
 
-/** \brief eeconfig initialization
+#ifdef STM32_EEPROM_ENABLE
+#include "hal.h"
+#include "eeprom_stm32.h"
+#endif
+
+extern uint32_t default_layer_state;
+/** \brief eeconfig enable
  *
  * FIXME: needs doc
  */
-void eeconfig_init(void)
-{
-    eeprom_update_word(EECONFIG_MAGIC,          EECONFIG_MAGIC_NUMBER);
-    eeprom_update_byte(EECONFIG_DEBUG,          0);
-    eeprom_update_byte(EECONFIG_DEFAULT_LAYER,  0);
-    eeprom_update_byte(EECONFIG_KEYMAP,         0);
-    eeprom_update_byte(EECONFIG_MOUSEKEY_ACCEL, 0);
-#ifdef BACKLIGHT_ENABLE
-    eeprom_update_byte(EECONFIG_BACKLIGHT,      0);
-#endif
-#ifdef AUDIO_ENABLE
-    eeprom_update_byte(EECONFIG_AUDIO,             0xFF); // On by default
-#endif
-#if defined(RGBLIGHT_ENABLE) || defined(RGB_MATRIX_ENABLE)
-    eeprom_update_dword(EECONFIG_RGBLIGHT,      0);
-#endif
-#ifdef STENO_ENABLE
-    eeprom_update_byte(EECONFIG_STENOMODE,      0);
+__attribute__ ((weak))
+void eeconfig_init_user(void) {
+  // Reset user EEPROM value to blank, rather than to a set value
+  eeconfig_update_user(0);
+}
+
+__attribute__ ((weak))
+void eeconfig_init_kb(void) {
+  // Reset Keyboard EEPROM value to blank, rather than to a set value
+  eeconfig_update_kb(0);
+
+  eeconfig_init_user();
+}
+
+
+/*
+ * FIXME: needs doc
+ */
+void eeconfig_init_quantum(void) {
+#ifdef STM32_EEPROM_ENABLE
+    EEPROM_format();
 #endif
+  eeprom_update_word(EECONFIG_MAGIC,          EECONFIG_MAGIC_NUMBER);
+  eeprom_update_byte(EECONFIG_DEBUG,          0);
+  eeprom_update_byte(EECONFIG_DEFAULT_LAYER,  0);
+  default_layer_state = 0;
+  eeprom_update_byte(EECONFIG_KEYMAP,         0);
+  eeprom_update_byte(EECONFIG_MOUSEKEY_ACCEL, 0);
+  eeprom_update_byte(EECONFIG_BACKLIGHT,      0);
+  eeprom_update_byte(EECONFIG_AUDIO,             0xFF); // On by default
+  eeprom_update_dword(EECONFIG_RGBLIGHT,      0);
+  eeprom_update_byte(EECONFIG_STENOMODE,      0);
+
+  eeconfig_init_kb();
+}
+
+/** \brief eeconfig initialization
+ *
+ * FIXME: needs doc
+ */
+void eeconfig_init(void) {
+
+  eeconfig_init_quantum();
 }
 
 /** \brief eeconfig enable
@@ -43,7 +73,10 @@ void eeconfig_enable(void)
  */
 void eeconfig_disable(void)
 {
-    eeprom_update_word(EECONFIG_MAGIC, 0xFFFF);
+#ifdef STM32_EEPROM_ENABLE
+    EEPROM_format();
+#endif
+    eeprom_update_word(EECONFIG_MAGIC, EECONFIG_MAGIC_NUMBER_OFF);
 }
 
 /** \brief eeconfig is enabled
@@ -55,6 +88,15 @@ bool eeconfig_is_enabled(void)
     return (eeprom_read_word(EECONFIG_MAGIC) == EECONFIG_MAGIC_NUMBER);
 }
 
+/** \brief eeconfig is disabled
+ *
+ * FIXME: needs doc
+ */
+bool eeconfig_is_disabled(void)
+{
+    return (eeprom_read_word(EECONFIG_MAGIC) == EECONFIG_MAGIC_NUMBER_OFF);
+}
+
 /** \brief eeconfig read debug
  *
  * FIXME: needs doc
@@ -88,7 +130,6 @@ uint8_t eeconfig_read_keymap(void)      { return eeprom_read_byte(EECONFIG_KEYMA
  */
 void eeconfig_update_keymap(uint8_t val) { eeprom_update_byte(EECONFIG_KEYMAP, val); }
 
-#ifdef BACKLIGHT_ENABLE
 /** \brief eeconfig read backlight
  *
  * FIXME: needs doc
@@ -99,9 +140,8 @@ uint8_t eeconfig_read_backlight(void)      { return eeprom_read_byte(EECONFIG_BA
  * FIXME: needs doc
  */
 void eeconfig_update_backlight(uint8_t val) { eeprom_update_byte(EECONFIG_BACKLIGHT, val); }
-#endif
 
-#ifdef AUDIO_ENABLE
+
 /** \brief eeconfig read audio
  *
  * FIXME: needs doc
@@ -112,4 +152,28 @@ uint8_t eeconfig_read_audio(void)      { return eeprom_read_byte(EECONFIG_AUDIO)
  * FIXME: needs doc
  */
 void eeconfig_update_audio(uint8_t val) { eeprom_update_byte(EECONFIG_AUDIO, val); }
-#endif
+
+
+/** \brief eeconfig read kb
+ *
+ * FIXME: needs doc
+ */
+uint32_t eeconfig_read_kb(void)      { return eeprom_read_dword(EECONFIG_KEYBOARD); }
+/** \brief eeconfig update kb
+ *
+ * FIXME: needs doc
+ */
+
+void eeconfig_update_kb(uint32_t val) { eeprom_update_dword(EECONFIG_KEYBOARD, val); }
+/** \brief eeconfig read user
+ *
+ * FIXME: needs doc
+ */
+uint32_t eeconfig_read_user(void)      { return eeprom_read_dword(EECONFIG_USER); }
+/** \brief eeconfig update user
+ *
+ * FIXME: needs doc
+ */
+void eeconfig_update_user(uint32_t val) { eeprom_update_dword(EECONFIG_USER, val); }
+
+
diff --git a/tmk_core/common/eeconfig.h b/tmk_core/common/eeconfig.h
index 1397a90c79..8d4e1d4d00 100644
--- a/tmk_core/common/eeconfig.h
+++ b/tmk_core/common/eeconfig.h
@@ -23,21 +23,42 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
 #define EECONFIG_MAGIC_NUMBER                       (uint16_t)0xFEED
+#define EECONFIG_MAGIC_NUMBER_OFF                   (uint16_t)0xFFFF
 
 /* eeprom parameteter address */
+#if !defined(STM32_EEPROM_ENABLE)
 #define EECONFIG_MAGIC                              (uint16_t *)0
-#define EECONFIG_DEBUG                              (uint8_t *)2
-#define EECONFIG_DEFAULT_LAYER                      (uint8_t *)3
-#define EECONFIG_KEYMAP                             (uint8_t *)4
-#define EECONFIG_MOUSEKEY_ACCEL                     (uint8_t *)5
-#define EECONFIG_BACKLIGHT                          (uint8_t *)6
-#define EECONFIG_AUDIO                              (uint8_t *)7
+#define EECONFIG_DEBUG                               (uint8_t *)2
+#define EECONFIG_DEFAULT_LAYER                       (uint8_t *)3
+#define EECONFIG_KEYMAP                              (uint8_t *)4
+#define EECONFIG_MOUSEKEY_ACCEL                      (uint8_t *)5
+#define EECONFIG_BACKLIGHT                           (uint8_t *)6
+#define EECONFIG_AUDIO                               (uint8_t *)7
 #define EECONFIG_RGBLIGHT                           (uint32_t *)8
 #define EECONFIG_UNICODEMODE                        (uint8_t *)12
 #define EECONFIG_STENOMODE                          (uint8_t *)13
 // EEHANDS for two handed boards
-#define EECONFIG_HANDEDNESS         				(uint8_t *)14
+#define EECONFIG_HANDEDNESS         			        	(uint8_t *)14
+#define EECONFIG_KEYBOARD                          (uint32_t *)15
+#define EECONFIG_USER                              (uint32_t *)19
 
+#else
+/* STM32F3 uses 16byte block. Reconfigure memory map */
+#define EECONFIG_MAGIC                              (uint16_t *)0
+#define EECONFIG_DEBUG                               (uint8_t *)1
+#define EECONFIG_DEFAULT_LAYER                       (uint8_t *)2
+#define EECONFIG_KEYMAP                              (uint8_t *)3
+#define EECONFIG_MOUSEKEY_ACCEL                      (uint8_t *)4
+#define EECONFIG_BACKLIGHT                           (uint8_t *)5
+#define EECONFIG_AUDIO                               (uint8_t *)6
+#define EECONFIG_RGBLIGHT                           (uint32_t *)7
+#define EECONFIG_UNICODEMODE                         (uint8_t *)9
+#define EECONFIG_STENOMODE                          (uint8_t *)10
+// EEHANDS for two handed boards
+#define EECONFIG_HANDEDNESS                     		(uint8_t *)11
+#define EECONFIG_KEYBOARD                          (uint32_t *)12
+#define EECONFIG_USER                              (uint32_t *)14
+#endif
 
 /* debug bit */
 #define EECONFIG_DEBUG_ENABLE                       (1<<0)
@@ -57,8 +78,12 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
 bool eeconfig_is_enabled(void);
+bool eeconfig_is_disabled(void);
 
 void eeconfig_init(void);
+void eeconfig_init_quantum(void);
+void eeconfig_init_kb(void);
+void eeconfig_init_user(void);
 
 void eeconfig_enable(void);
 
@@ -83,4 +108,9 @@ uint8_t eeconfig_read_audio(void);
 void eeconfig_update_audio(uint8_t val);
 #endif
 
+uint32_t eeconfig_read_kb(void);
+void eeconfig_update_kb(uint32_t val);
+uint32_t eeconfig_read_user(void);
+void eeconfig_update_user(uint32_t val);
+
 #endif
diff --git a/tmk_core/common/host.c b/tmk_core/common/host.c
index e12b622165..f5d0416996 100644
--- a/tmk_core/common/host.c
+++ b/tmk_core/common/host.c
@@ -22,6 +22,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "util.h"
 #include "debug.h"
 
+#ifdef NKRO_ENABLE
+  #include "keycode_config.h"
+  extern keymap_config_t keymap_config;
+#endif
+
 static host_driver_t *driver;
 static uint16_t last_system_report = 0;
 static uint16_t last_consumer_report = 0;
@@ -46,6 +51,20 @@ uint8_t host_keyboard_leds(void)
 void host_keyboard_send(report_keyboard_t *report)
 {
     if (!driver) return;
+#if defined(NKRO_ENABLE) && defined(NKRO_SHARED_EP)
+    if (keyboard_protocol && keymap_config.nkro) {
+        /* The callers of this function assume that report->mods is where mods go in.
+         * But report->nkro.mods can be at a different offset if core keyboard does not have a report ID.
+         */
+        report->nkro.mods = report->mods;
+        report->nkro.report_id = REPORT_ID_NKRO;
+    } else
+#endif
+    {
+#ifdef KEYBOARD_SHARED_EP
+        report->report_id = REPORT_ID_KEYBOARD;
+#endif
+    }
     (*driver->send_keyboard)(report);
 
     if (debug_keyboard) {
@@ -60,6 +79,9 @@ void host_keyboard_send(report_keyboard_t *report)
 void host_mouse_send(report_mouse_t *report)
 {
     if (!driver) return;
+#ifdef MOUSE_SHARED_EP
+    report->report_id = REPORT_ID_MOUSE;
+#endif
     (*driver->send_mouse)(report);
 }
 
diff --git a/tmk_core/common/keyboard.c b/tmk_core/common/keyboard.c
index fe626efb35..1bfd4c9cca 100644
--- a/tmk_core/common/keyboard.c
+++ b/tmk_core/common/keyboard.c
@@ -73,6 +73,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifdef HD44780_ENABLE
 #   include "hd44780.h"
 #endif
+#ifdef QWIIC_ENABLE
+#   include "qwiic.h"
+#endif
 
 #ifdef MATRIX_HAS_GHOST
 extern const uint16_t keymaps[][MATRIX_ROWS][MATRIX_COLS];
@@ -121,6 +124,14 @@ static inline bool has_ghost_in_row(uint8_t row, matrix_row_t rowdata)
 
 #endif
 
+void disable_jtag(void) {
+// To use PORTF disable JTAG with writing JTD bit twice within four cycles.
+#if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega32U4__))
+    MCUCR |= _BV(JTD);
+    MCUCR |= _BV(JTD);
+#endif
+}
+
 /** \brief matrix_setup
  *
  * FIXME: needs doc
@@ -134,6 +145,7 @@ void matrix_setup(void) {
  * FIXME: needs doc
  */
 void keyboard_setup(void) {
+    disable_jtag();
     matrix_setup();
 }
 
@@ -152,13 +164,11 @@ bool is_keyboard_master(void) {
  */
 void keyboard_init(void) {
     timer_init();
-// To use PORTF disable JTAG with writing JTD bit twice within four cycles.
-#if  (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega32U4__))
-  MCUCR |= _BV(JTD);
-  MCUCR |= _BV(JTD);
-#endif
     matrix_init();
     matrix_debounce_init();
+#ifdef QWIIC_ENABLE
+    qwiic_init();
+#endif
 #ifdef PS2_MOUSE_ENABLE
     ps2_mouse_init();
 #endif
@@ -256,6 +266,10 @@ void keyboard_task(void)
 
 MATRIX_LOOP_END:
 
+#ifdef QWIIC_ENABLE
+    qwiic_task();
+#endif
+
 #ifdef MOUSEKEY_ENABLE
     // mousekey repeat & acceleration
     mousekey_task();
diff --git a/tmk_core/common/keyboard.h b/tmk_core/common/keyboard.h
index f17003c2ff..71e594a890 100644
--- a/tmk_core/common/keyboard.h
+++ b/tmk_core/common/keyboard.h
@@ -57,6 +57,8 @@ static inline bool IS_RELEASED(keyevent_t event) { return (!IS_NOEVENT(event) &&
     .time = (timer_read() | 1)                          \
 }
 
+void disable_jtag(void);
+
 /* it runs once at early stage of startup before keyboard_init. */
 void keyboard_setup(void);
 /* it runs once after initializing host side protocol, debug and MCU peripherals. */
diff --git a/tmk_core/common/keycode.h b/tmk_core/common/keycode.h
index 61642ae84f..ac3edbd215 100644
--- a/tmk_core/common/keycode.h
+++ b/tmk_core/common/keycode.h
@@ -33,7 +33,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define IS_SPECIAL(code)         ((0xA5 <= (code) && (code) <= 0xDF) || (0xE8 <= (code) && (code) <= 0xFF))
 #define IS_SYSTEM(code)          (KC_PWR       <= (code) && (code) <= KC_WAKE)
-#define IS_CONSUMER(code)        (KC_MUTE      <= (code) && (code) <= KC_MRWD)
+#define IS_CONSUMER(code)        (KC_MUTE      <= (code) && (code) <= KC_BRID)
 
 #define IS_FN(code)              (KC_FN0       <= (code) && (code) <= KC_FN31)
 
@@ -140,6 +140,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define KC_LWIN KC_LGUI
 #define KC_RCTL KC_RCTRL
 #define KC_RSFT KC_RSHIFT
+#define KC_ALGR KC_RALT
 #define KC_RCMD KC_RGUI
 #define KC_RWIN KC_RGUI
 
@@ -170,6 +171,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define KC_WFAV KC_WWW_FAVORITES
 #define KC_MFFD KC_MEDIA_FAST_FORWARD
 #define KC_MRWD KC_MEDIA_REWIND
+#define KC_BRIU KC_BRIGHTNESS_UP
+#define KC_BRID KC_BRIGHTNESS_DOWN
 
 /* Mouse Keys */
 #define KC_MS_U KC_MS_UP
@@ -457,6 +460,8 @@ enum internal_special_keycodes {
   KC_WWW_FAVORITES,
   KC_MEDIA_FAST_FORWARD,
   KC_MEDIA_REWIND,
+  KC_BRIGHTNESS_UP,
+  KC_BRIGHTNESS_DOWN,
 
   /* Fn keys */
   KC_FN0                  = 0xC0,
diff --git a/tmk_core/common/print.h b/tmk_core/common/print.h
index 8836c0fc7c..2d7184bd0d 100644
--- a/tmk_core/common/print.h
+++ b/tmk_core/common/print.h
@@ -29,7 +29,7 @@
 #include <stdbool.h>
 #include "util.h"
 
-#if defined(PROTOCOL_CHIBIOS)
+#if defined(PROTOCOL_CHIBIOS) || defined(PROTOCOL_ARM_ATSAM)
 #define PSTR(x) x
 #endif
 
@@ -60,7 +60,7 @@
 #    define println(s)         xputs(PSTR(s "\r\n"))
 #    define uprint(s)          print(s)
 #    define uprintln(s)        println(s)
-#    define uprintf(fmt, ...)  xprintf(fmt, ...)
+#    define uprintf(fmt, ...)  xprintf(fmt, ##__VA_ARGS__)
 
 #  endif /* USER_PRINT / NORMAL PRINT */
 
@@ -73,7 +73,9 @@ void print_set_sendchar(int8_t (*print_sendchar_func)(uint8_t));
 
 #elif defined(PROTOCOL_CHIBIOS) /* PROTOCOL_CHIBIOS */
 
+#ifndef TERMINAL_ENABLE
 #  include "chibios/printf.h"
+#endif
 
 #  ifdef USER_PRINT /* USER_PRINT */
 
@@ -99,6 +101,34 @@ void print_set_sendchar(int8_t (*print_sendchar_func)(uint8_t));
 
 #  endif /* USER_PRINT / NORMAL PRINT */
 
+#elif defined(PROTOCOL_ARM_ATSAM) /* PROTOCOL_ARM_ATSAM */
+
+#  include "arm_atsam/printf.h"
+
+#  ifdef USER_PRINT /* USER_PRINT */
+
+// Remove normal print defines
+#    define print(s)
+#    define println(s)
+#    define xprintf(fmt, ...)
+
+// Create user print defines
+#    define uprintf(fmt, ...)  __xprintf(fmt, ##__VA_ARGS__)
+#    define uprint(s)          xprintf(s)
+#    define uprintln(s)        xprintf(s "\r\n")
+
+#  else /* NORMAL PRINT */
+
+// Create user & normal print defines
+#    define xprintf(fmt, ...)  __xprintf(fmt, ##__VA_ARGS__)
+#    define print(s)           xprintf(s)
+#    define println(s)         xprintf(s "\r\n")
+#    define uprint(s)          print(s)
+#    define uprintln(s)        println(s)
+#    define uprintf(fmt, ...)  xprintf(fmt, ##__VA_ARGS__)
+
+#  endif /* USER_PRINT / NORMAL PRINT */
+
 #elif defined(__arm__) /* __arm__ */
 
 #  include "mbed/xprintf.h"
@@ -111,26 +141,26 @@ void print_set_sendchar(int8_t (*print_sendchar_func)(uint8_t));
 #    define xprintf(fmt, ...)
 
 // Create user print defines
-#    define uprintf(fmt, ...)  __xprintf(fmt, ...)
+#    define uprintf(fmt, ...)  __xprintf(fmt, ##__VA_ARGS__)
 #    define uprint(s)          xprintf(s)
 #    define uprintln(s)        xprintf(s "\r\n")
 
 #  else /* NORMAL PRINT */
 
 // Create user & normal print defines
-#    define xprintf(fmt, ...)  __xprintf(fmt, ...)
+#    define xprintf(fmt, ...)  __xprintf(fmt, ##__VA_ARGS__)
 #    define print(s)           xprintf(s)
 #    define println(s)         xprintf(s "\r\n")
 #    define uprint(s)          print(s)
 #    define uprintln(s)        println(s)
-#    define uprintf(fmt, ...)  xprintf(fmt, ...)
+#    define uprintf(fmt, ...)  xprintf(fmt, ##__VA_ARGS__)
 
 #  endif /* USER_PRINT / NORMAL PRINT */
 
 /* TODO: to select output destinations: UART/USBSerial */
 #  define print_set_sendchar(func)
 
-#endif /* __AVR__ / PROTOCOL_CHIBIOS / __arm__ */
+#endif /* __AVR__ / PROTOCOL_CHIBIOS / PROTOCOL_ARM_ATSAM / __arm__ */
 
 // User print disables the normal print messages in the body of QMK/TMK code and
 // is meant as a lightweight alternative to NOPRINT. Use it when you only want to do
diff --git a/tmk_core/common/report.c b/tmk_core/common/report.c
index eb3b44312f..6a06b70c60 100644
--- a/tmk_core/common/report.c
+++ b/tmk_core/common/report.c
@@ -19,6 +19,7 @@
 #include "keycode_config.h"
 #include "debug.h"
 #include "util.h"
+#include <string.h>
 
 /** \brief has_anykey
  *
@@ -27,8 +28,16 @@
 uint8_t has_anykey(report_keyboard_t* keyboard_report)
 {
     uint8_t cnt = 0;
-    for (uint8_t i = 1; i < KEYBOARD_REPORT_SIZE; i++) {
-        if (keyboard_report->raw[i])
+    uint8_t *p = keyboard_report->keys;
+    uint8_t lp = sizeof(keyboard_report->keys);
+#ifdef NKRO_ENABLE
+    if (keyboard_protocol && keymap_config.nkro) {
+        p = keyboard_report->nkro.bits;
+        lp = sizeof(keyboard_report->nkro.bits);
+    }
+#endif
+    while (lp--) {
+        if (*p++)
             cnt++;
     }
     return cnt;
@@ -237,7 +246,11 @@ void del_key_from_report(report_keyboard_t* keyboard_report, uint8_t key)
 void clear_keys_from_report(report_keyboard_t* keyboard_report)
 {
     // not clear mods
-    for (int8_t i = 1; i < KEYBOARD_REPORT_SIZE; i++) {
-        keyboard_report->raw[i] = 0;
+#ifdef NKRO_ENABLE
+    if (keyboard_protocol && keymap_config.nkro) {
+        memset(keyboard_report->nkro.bits, 0, sizeof(keyboard_report->nkro.bits));
+        return;
     }
+#endif
+    memset(keyboard_report->keys, 0, sizeof(keyboard_report->keys));
 }
diff --git a/tmk_core/common/report.h b/tmk_core/common/report.h
index 6c27eb9dc6..eb9afb727e 100644
--- a/tmk_core/common/report.h
+++ b/tmk_core/common/report.h
@@ -23,9 +23,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
 /* report id */
-#define REPORT_ID_MOUSE     1
-#define REPORT_ID_SYSTEM    2
-#define REPORT_ID_CONSUMER  3
+#define REPORT_ID_KEYBOARD  1
+#define REPORT_ID_MOUSE     2
+#define REPORT_ID_SYSTEM    3
+#define REPORT_ID_CONSUMER  4
+#define REPORT_ID_NKRO      5
 
 /* mouse buttons */
 #define MOUSE_BTN1 (1<<0)
@@ -36,6 +38,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* Consumer Page(0x0C)
  * following are supported by Windows: http://msdn.microsoft.com/en-us/windows/hardware/gg463372.aspx
+ * see also https://docs.microsoft.com/en-us/windows-hardware/drivers/hid/display-brightness-control
  */
 #define AUDIO_MUTE              0x00E2
 #define AUDIO_VOL_UP            0x00E9
@@ -45,6 +48,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define TRANSPORT_STOP          0x00B7
 #define TRANSPORT_STOP_EJECT    0x00CC
 #define TRANSPORT_PLAY_PAUSE    0x00CD
+#define BRIGHTNESSUP            0x006F
+#define BRIGHTNESSDOWN          0x0070
 /* application launch */
 #define AL_CC_CONFIG            0x0183
 #define AL_EMAIL                0x018A
@@ -72,27 +77,35 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define SYSTEM_WAKE_UP          0x0083
 
 
+#define NKRO_SHARED_EP
 /* key report size(NKRO or boot mode) */
 #if defined(NKRO_ENABLE)
-  #if defined(PROTOCOL_PJRC)
-    #include "usb.h"
-    #define KEYBOARD_REPORT_SIZE KBD2_SIZE
-    #define KEYBOARD_REPORT_KEYS (KBD2_SIZE - 2)
-    #define KEYBOARD_REPORT_BITS (KBD2_SIZE - 1)
-  #elif defined(PROTOCOL_LUFA) || defined(PROTOCOL_CHIBIOS)
+  #if defined(PROTOCOL_LUFA) || defined(PROTOCOL_CHIBIOS)
     #include "protocol/usb_descriptor.h"
-    #define KEYBOARD_REPORT_SIZE NKRO_EPSIZE
-    #define KEYBOARD_REPORT_KEYS (NKRO_EPSIZE - 2)
+    #define KEYBOARD_REPORT_BITS (SHARED_EPSIZE - 2)
+  #elif defined(PROTOCOL_ARM_ATSAM)
+    #include "protocol/arm_atsam/usb/udi_device_epsize.h"
     #define KEYBOARD_REPORT_BITS (NKRO_EPSIZE - 1)
+    #undef NKRO_SHARED_EP
+    #undef MOUSE_SHARED_EP
   #else
     #error "NKRO not supported with this protocol"
+  #endif
 #endif
 
+#ifdef KEYBOARD_SHARED_EP
+#   define KEYBOARD_REPORT_SIZE 9
 #else
 #   define KEYBOARD_REPORT_SIZE 8
-#   define KEYBOARD_REPORT_KEYS 6
 #endif
 
+#define KEYBOARD_REPORT_KEYS 6
+
+/* VUSB hardcodes keyboard and mouse+extrakey only */
+#if defined(PROTOCOL_VUSB)
+  #undef KEYBOARD_SHARED_EP
+  #undef MOUSE_SHARED_EP
+#endif
 
 #ifdef __cplusplus
 extern "C" {
@@ -121,12 +134,18 @@ extern "C" {
 typedef union {
     uint8_t raw[KEYBOARD_REPORT_SIZE];
     struct {
+#ifdef KEYBOARD_SHARED_EP
+        uint8_t report_id;
+#endif
         uint8_t mods;
         uint8_t reserved;
         uint8_t keys[KEYBOARD_REPORT_KEYS];
     };
 #ifdef NKRO_ENABLE
-    struct {
+    struct nkro_report {
+#ifdef NKRO_SHARED_EP
+        uint8_t report_id;
+#endif
         uint8_t mods;
         uint8_t bits[KEYBOARD_REPORT_BITS];
     } nkro;
@@ -134,6 +153,9 @@ typedef union {
 } __attribute__ ((packed)) report_keyboard_t;
 
 typedef struct {
+#ifdef MOUSE_SHARED_EP
+    uint8_t report_id;
+#endif
     uint8_t buttons;
     int8_t x;
     int8_t y;
@@ -170,7 +192,9 @@ typedef struct {
     (key == KC_WWW_FORWARD      ?  AC_FORWARD : \
     (key == KC_WWW_STOP         ?  AC_STOP : \
     (key == KC_WWW_REFRESH      ?  AC_REFRESH : \
-    (key == KC_WWW_FAVORITES    ?  AC_BOOKMARKS : 0)))))))))))))))))))))
+    (key == KC_BRIGHTNESS_UP    ?  BRIGHTNESSUP : \
+    (key == KC_BRIGHTNESS_DOWN  ?  BRIGHTNESSDOWN : \
+    (key == KC_WWW_FAVORITES    ?  AC_BOOKMARKS : 0)))))))))))))))))))))))
 
 uint8_t has_anykey(report_keyboard_t* keyboard_report);
 uint8_t get_first_key(report_keyboard_t* keyboard_report);