38 files changed, 327 insertions, 2125 deletions
diff --git a/tmk_core/common.mk b/tmk_core/common.mk
index e44ff2f0a..f0faa2dc3 100644
--- a/tmk_core/common.mk
+++ b/tmk_core/common.mk
@@ -55,8 +55,6 @@ ifeq ($(strip $(NKRO_ENABLE)), yes)
        $(info NKRO is not currently supported on V-USB, and has been disabled.)
    else ifeq ($(strip $(BLUETOOTH_ENABLE)), yes)
        $(info NKRO is not currently supported with Bluetooth, and has been disabled.)
-    else ifneq ($(BLUETOOTH),)
-        $(info NKRO is not currently supported with Bluetooth, and has been disabled.)
    else
        TMK_COMMON_DEFS += -DNKRO_ENABLE
        SHARED_EP_ENABLE = yes
@@ -77,23 +75,6 @@ ifeq ($(strip $(NO_SUSPEND_POWER_DOWN)), yes)
    TMK_COMMON_DEFS += -DNO_SUSPEND_POWER_DOWN
 endif
-ifeq ($(strip $(BLUETOOTH_ENABLE)), yes)
-    TMK_COMMON_DEFS += -DBLUETOOTH_ENABLE
-        TMK_COMMON_DEFS += -DNO_USB_STARTUP_CHECK
-endif
-ifeq ($(strip $(BLUETOOTH)), AdafruitBLE)
-        TMK_COMMON_DEFS += -DBLUETOOTH_ENABLE
-        TMK_COMMON_DEFS += -DMODULE_ADAFRUIT_BLE
-        TMK_COMMON_DEFS += -DNO_USB_STARTUP_CHECK
-endif
-ifeq ($(strip $(BLUETOOTH)), RN42)
-        TMK_COMMON_DEFS += -DBLUETOOTH_ENABLE
-        TMK_COMMON_DEFS += -DMODULE_RN42
-        TMK_COMMON_DEFS += -DNO_USB_STARTUP_CHECK
-endif
 ifeq ($(strip $(SWAP_HANDS_ENABLE)), yes)
    TMK_COMMON_DEFS += -DSWAP_HANDS_ENABLE
 endif
diff --git a/tmk_core/common/arm_atsam/eeprom.c b/tmk_core/common/arm_atsam/eeprom.c
index ccd5d15a5..ff1a69262 100644
--- a/tmk_core/common/arm_atsam/eeprom.c
+++ b/tmk_core/common/arm_atsam/eeprom.c
@@ -13,24 +13,110 @@
 * 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"
+#include "debug.h"
+#include "samd51j18a.h"
+#include "core_cm4.h"
+#include "component/nvmctrl.h"
 #ifndef EEPROM_SIZE
 #    include "eeconfig.h"
 #    define EEPROM_SIZE (((EECONFIG_SIZE + 3) / 4) * 4)  // based off eeconfig's current usage, aligned to 4-byte sizes, to deal with LTO
 #endif
-__attribute__((aligned(4))) static uint8_t buffer[EEPROM_SIZE];
+#ifndef MAX
+#    define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
+#endif
+#ifndef BUSY_RETRIES
+#    define BUSY_RETRIES 10000
+#endif
+// #define DEBUG_EEPROM_OUTPUT
+/*
+ * Debug print utils
+ */
+#if defined(DEBUG_EEPROM_OUTPUT)
+#    define eeprom_printf(fmt, ...) xprintf(fmt, ##__VA_ARGS__);
+#else /* NO_DEBUG */
+#    define eeprom_printf(fmt, ...)
+#endif /* NO_DEBUG */
+__attribute__((aligned(4))) static uint8_t buffer[EEPROM_SIZE] = {0};
+volatile uint8_t *                         SmartEEPROM8        = (uint8_t *)SEEPROM_ADDR;
+static inline bool eeprom_is_busy(void) {
+    int timeout = BUSY_RETRIES;
+    while (NVMCTRL->SEESTAT.bit.BUSY && timeout-- > 0)
+        ;
+    return NVMCTRL->SEESTAT.bit.BUSY;
+}
+static uint32_t get_virtual_eeprom_size(void) {
+    // clang-format off
+    static const uint32_t VIRTUAL_EEPROM_MAP[11][8] = {
+    /*          4    8    16    32    64    128    256    512 */
+    /* 0*/ {   0,    0,    0,    0,    0,     0,     0,     0 },
+    /* 1*/ { 512, 1024, 2048, 4096, 4096,  4096,  4096,  4096 },
+    /* 2*/ { 512, 1024, 2048, 4096, 8192,  8192,  8192,  8192 },
+    /* 3*/ { 512, 1024, 2048, 4096, 8192, 16384, 16384, 16384 },
+    /* 4*/ { 512, 1024, 2048, 4096, 8192, 16384, 16384, 16384 },
+    /* 5*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 32768 },
+    /* 6*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 32768 },
+    /* 7*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 32768 },
+    /* 8*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 32768 },
+    /* 9*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536 },
+    /*10*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536 },
+    };
+    // clang-format on
+    static uint32_t virtual_eeprom_size = UINT32_MAX;
+    if (virtual_eeprom_size == UINT32_MAX) {
+        virtual_eeprom_size = VIRTUAL_EEPROM_MAP[NVMCTRL->SEESTAT.bit.PSZ][NVMCTRL->SEESTAT.bit.SBLK];
+    }
+    // eeprom_printf("get_virtual_eeprom_size:: %d:%d:%d\n", NVMCTRL->SEESTAT.bit.PSZ, NVMCTRL->SEESTAT.bit.SBLK, virtual_eeprom_size);
+    return virtual_eeprom_size;
+}
 uint8_t eeprom_read_byte(const uint8_t *addr) {
    uintptr_t offset = (uintptr_t)addr;
-    return buffer[offset];
+    if (offset >= MAX(EEPROM_SIZE, get_virtual_eeprom_size())) {
+        eeprom_printf("eeprom_read_byte:: out of bounds\n");
+        return 0x0;
+    }
+    if (get_virtual_eeprom_size() == 0) {
+        return buffer[offset];
+    }
+    if (eeprom_is_busy()) {
+        eeprom_printf("eeprom_write_byte:: timeout\n");
+        return 0x0;
+    }
+    return SmartEEPROM8[offset];
 }
 void eeprom_write_byte(uint8_t *addr, uint8_t value) {
    uintptr_t offset = (uintptr_t)addr;
-    buffer[offset]   = value;
+    if (offset >= MAX(EEPROM_SIZE, get_virtual_eeprom_size())) {
+        eeprom_printf("eeprom_write_byte:: out of bounds\n");
+        return;
+    }
+    if (get_virtual_eeprom_size() == 0) {
+        buffer[offset] = value;
+        return;
+    }
+    if (eeprom_is_busy()) {
+        eeprom_printf("eeprom_write_byte:: timeout\n");
+        return;
+    }
+    SmartEEPROM8[offset] = value;
 }
 uint16_t eeprom_read_word(const uint16_t *addr) {
diff --git a/tmk_core/common/avr/suspend.c b/tmk_core/common/avr/suspend.c
index 690d7f38c..b614746e6 100644
--- a/tmk_core/common/avr/suspend.c
+++ b/tmk_core/common/avr/suspend.c
@@ -16,25 +16,6 @@
 #    include "vusb.h"
 #endif
-#ifdef BACKLIGHT_ENABLE
-#    include "backlight.h"
-#endif
-#ifdef AUDIO_ENABLE
-#    include "audio.h"
-#endif /* AUDIO_ENABLE */
-#if defined(RGBLIGHT_SLEEP) && defined(RGBLIGHT_ENABLE)
-#    include "rgblight.h"
-#endif
-#ifdef LED_MATRIX_ENABLE
-#    include "led_matrix.h"
-#endif
-#ifdef RGB_MATRIX_ENABLE
-#    include "rgb_matrix.h"
-#endif
 /** \brief Suspend idle
 *
 * FIXME: needs doc
@@ -50,17 +31,6 @@ void suspend_idle(uint8_t time) {
 // 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(); }
 #if !defined(NO_SUSPEND_POWER_DOWN) && defined(WDT_vect)
 // clang-format off
@@ -135,41 +105,9 @@ void suspend_power_down(void) {
    if (!vusb_suspended) return;
 #endif
-    suspend_power_down_kb();
+    suspend_power_down_quantum();
 #ifndef NO_SUSPEND_POWER_DOWN
-    // Turn off backlight
-#    ifdef BACKLIGHT_ENABLE
-    backlight_set(0);
-#    endif
-    // Turn off LED indicators
-    uint8_t leds_off = 0;
-#    if defined(BACKLIGHT_CAPS_LOCK) && defined(BACKLIGHT_ENABLE)
-    if (is_backlight_enabled()) {
-        // Don't try to turn off Caps Lock indicator as it is backlight and backlight is already off
-        leds_off |= (1 << USB_LED_CAPS_LOCK);
-    }
-#    endif
-    led_set(leds_off);
-    // Turn off audio
-#    ifdef AUDIO_ENABLE
-    stop_all_notes();
-#    endif
-    // Turn off underglow
-#    if defined(RGBLIGHT_SLEEP) && defined(RGBLIGHT_ENABLE)
-    rgblight_suspend();
-#    endif
-#    if defined(LED_MATRIX_ENABLE)
-    led_matrix_set_suspend_state(true);
-#    endif
-#    if defined(RGB_MATRIX_ENABLE)
-    rgb_matrix_set_suspend_state(true);
-#    endif
    // Enter sleep state if possible (ie, the MCU has a watchdog timeout interrupt)
 #    if defined(WDT_vect)
    power_down(WDTO_15MS);
@@ -189,18 +127,6 @@ bool                       suspend_wakeup_condition(void) {
    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
@@ -209,27 +135,7 @@ void suspend_wakeup_init(void) {
    // clear keyboard state
    clear_keyboard();
-    // Turn on backlight
+    suspend_wakeup_init_quantum();
-#ifdef BACKLIGHT_ENABLE
-    backlight_init();
-#endif
-    // Restore LED indicators
-    led_set(host_keyboard_leds());
-    // Wake up underglow
-#if defined(RGBLIGHT_SLEEP) && defined(RGBLIGHT_ENABLE)
-    rgblight_wakeup();
-#endif
-#if defined(LED_MATRIX_ENABLE)
-    led_matrix_set_suspend_state(false);
-#endif
-#if defined(RGB_MATRIX_ENABLE)
-    rgb_matrix_set_suspend_state(false);
-#endif
-    suspend_wakeup_init_kb();
 }
 #if !defined(NO_SUSPEND_POWER_DOWN) && defined(WDT_vect)
diff --git a/tmk_core/common/chibios/_wait.h b/tmk_core/common/chibios/_wait.h
index b740afbd2..2f36c64a2 100644
--- a/tmk_core/common/chibios/_wait.h
+++ b/tmk_core/common/chibios/_wait.h
@@ -43,8 +43,6 @@ void wait_us(uint16_t duration);
 #include "_wait.c"
-#define CPU_CLOCK STM32_SYSCLK
 /* For GPIOs on ARM-based MCUs, the input pins are sampled by the clock of the bus
 * to which the GPIO is connected.
 * The connected buses differ depending on the various series of MCUs.
diff --git a/tmk_core/common/chibios/chibios_config.h b/tmk_core/common/chibios/chibios_config.h
index 23c65f942..c35f58955 100644
--- a/tmk_core/common/chibios/chibios_config.h
+++ b/tmk_core/common/chibios/chibios_config.h
@@ -19,22 +19,33 @@
 #    define SPLIT_USB_DETECT  // Force this on when dedicated pin is not used
 #endif
-#if defined(STM32F1XX)
+// STM32 compatibility
-#    define USE_GPIOV1
+#if defined(MCU_STM32)
-#endif
+#    define CPU_CLOCK STM32_SYSCLK
-#if defined(STM32F1XX) || defined(STM32F2XX) || defined(STM32F4XX) || defined(STM32L1XX)
+#    if defined(STM32F1XX)
-#    define USE_I2CV1
+#        define USE_GPIOV1
-#endif
+#        define PAL_MODE_ALTERNATE_OPENDRAIN PAL_MODE_STM32_ALTERNATE_OPENDRAIN
+#        define PAL_MODE_ALTERNATE_PUSHPULL PAL_MODE_STM32_ALTERNATE_PUSHPULL
+#    else
+#        define PAL_OUTPUT_TYPE_OPENDRAIN PAL_STM32_OTYPE_OPENDRAIN
+#        define PAL_OUTPUT_TYPE_PUSHPULL PAL_STM32_OTYPE_PUSHPULL
+#        define PAL_OUTPUT_SPEED_HIGHEST PAL_STM32_OSPEED_HIGHEST
+#        define PAL_PUPDR_FLOATING PAL_STM32_PUPDR_FLOATING
+#    endif
-// teensy
+#    if defined(STM32F1XX) || defined(STM32F2XX) || defined(STM32F4XX) || defined(STM32L1XX)
-#if defined(K20x) || defined(KL2x)
+#        define USE_I2CV1
-#    define USE_I2CV1
+#    endif
-#    define USE_I2CV1_CONTRIB  // for some reason a bunch of ChibiOS-Contrib boards only have clock_speed
-#    define USE_GPIOV1
-#    define STM32_SYSCLK KINETIS_SYSCLK_FREQUENCY
 #endif
-#if defined(MK66F18)
+// teensy compatibility
-#    define STM32_SYSCLK KINETIS_SYSCLK_FREQUENCY
+#if defined(MCU_KINETIS)
-#endif
+#    define CPU_CLOCK KINETIS_SYSCLK_FREQUENCY
+#    if defined(K20x) || defined(KL2x)
+#        define USE_I2CV1
+#        define USE_I2CV1_CONTRIB  // for some reason a bunch of ChibiOS-Contrib boards only have clock_speed
+#        define USE_GPIOV1
+#    endif
+#endif
+\ No newline at end of file
diff --git a/tmk_core/common/chibios/eeprom_stm32.c b/tmk_core/common/chibios/eeprom_stm32.c
index 1fdf8c1e2..acc6a4851 100644
--- a/tmk_core/common/chibios/eeprom_stm32.c
+++ b/tmk_core/common/chibios/eeprom_stm32.c
@@ -620,48 +620,11 @@ uint16_t EEPROM_ReadDataWord(uint16_t Address) {
 }
 /*****************************************************************************
- *  Wrap library in AVR style functions.
+ *  Bind to eeprom_driver.c
 *******************************************************************************/
-uint8_t eeprom_read_byte(const uint8_t *Address) { return EEPROM_ReadDataByte((const uintptr_t)Address); }
+void eeprom_driver_init(void) { EEPROM_Init(); }
-void eeprom_write_byte(uint8_t *Address, uint8_t Value) { EEPROM_WriteDataByte((uintptr_t)Address, Value); }
+void eeprom_driver_erase(void) { EEPROM_Erase(); }
-void eeprom_update_byte(uint8_t *Address, uint8_t Value) { EEPROM_WriteDataByte((uintptr_t)Address, Value); }
-uint16_t eeprom_read_word(const uint16_t *Address) { return EEPROM_ReadDataWord((const uintptr_t)Address); }
-void eeprom_write_word(uint16_t *Address, uint16_t Value) { EEPROM_WriteDataWord((uintptr_t)Address, Value); }
-void eeprom_update_word(uint16_t *Address, uint16_t Value) { EEPROM_WriteDataWord((uintptr_t)Address, Value); }
-uint32_t eeprom_read_dword(const uint32_t *Address) {
-    const uint16_t p = (const uintptr_t)Address;
-    /* Check word alignment */
-    if (p % 2) {
-        /* Not aligned */
-        return (uint32_t)EEPROM_ReadDataByte(p) | (uint32_t)(EEPROM_ReadDataWord(p + 1) << 8) | (uint32_t)(EEPROM_ReadDataByte(p + 3) << 24);
-    } else {
-        /* Aligned */
-        return EEPROM_ReadDataWord(p) | (EEPROM_ReadDataWord(p + 2) << 16);
-    }
-}
-void eeprom_write_dword(uint32_t *Address, uint32_t Value) {
-    uint16_t p = (const uintptr_t)Address;
-    /* Check word alignment */
-    if (p % 2) {
-        /* Not aligned */
-        EEPROM_WriteDataByte(p, (uint8_t)Value);
-        EEPROM_WriteDataWord(p + 1, (uint16_t)(Value >> 8));
-        EEPROM_WriteDataByte(p + 3, (uint8_t)(Value >> 24));
-    } else {
-        /* Aligned */
-        EEPROM_WriteDataWord(p, (uint16_t)Value);
-        EEPROM_WriteDataWord(p + 2, (uint16_t)(Value >> 16));
-    }
-}
-void eeprom_update_dword(uint32_t *Address, uint32_t Value) { eeprom_write_dword(Address, Value); }
 void eeprom_read_block(void *buf, const void *addr, size_t len) {
    const uint8_t *src  = (const uint8_t *)addr;
@@ -670,14 +633,14 @@ void eeprom_read_block(void *buf, const void *addr, size_t len) {
    /* Check word alignment */
    if (len && (uintptr_t)src % 2) {
        /* Read the unaligned first byte */
-        *dest++ = eeprom_read_byte(src++);
+        *dest++ = EEPROM_ReadDataByte((const uintptr_t)src++);
        --len;
    }
    uint16_t value;
    bool     aligned = ((uintptr_t)dest % 2 == 0);
    while (len > 1) {
-        value = eeprom_read_word((uint16_t *)src);
+        value = EEPROM_ReadDataWord((const uintptr_t)((uint16_t *)src));
        if (aligned) {
            *(uint16_t *)dest = value;
            dest += 2;
@@ -689,7 +652,7 @@ void eeprom_read_block(void *buf, const void *addr, size_t len) {
        len -= 2;
    }
    if (len) {
-        *dest = eeprom_read_byte(src);
+        *dest = EEPROM_ReadDataByte((const uintptr_t)src);
    }
 }
@@ -700,7 +663,7 @@ void eeprom_write_block(const void *buf, void *addr, size_t len) {
    /* Check word alignment */
    if (len && (uintptr_t)dest % 2) {
        /* Write the unaligned first byte */
-        eeprom_write_byte(dest++, *src++);
+        EEPROM_WriteDataByte((uintptr_t)dest++, *src++);
        --len;
    }
@@ -712,15 +675,13 @@ void eeprom_write_block(const void *buf, void *addr, size_t len) {
        } else {
            value = *(uint8_t *)src | (*(uint8_t *)(src + 1) << 8);
        }
-        eeprom_write_word((uint16_t *)dest, value);
+        EEPROM_WriteDataWord((uintptr_t)((uint16_t *)dest), value);
        dest += 2;
        src += 2;
        len -= 2;
    }
    if (len) {
-        eeprom_write_byte(dest, *src);
+        EEPROM_WriteDataByte((uintptr_t)dest, *src);
    }
 }
-void eeprom_update_block(const void *buf, void *addr, size_t len) { eeprom_write_block(buf, addr, len); }
diff --git a/tmk_core/common/chibios/eeprom_stm32_defs.h b/tmk_core/common/chibios/eeprom_stm32_defs.h
index 22b4ab858..cc64cda74 100644
--- a/tmk_core/common/chibios/eeprom_stm32_defs.h
+++ b/tmk_core/common/chibios/eeprom_stm32_defs.h
@@ -32,6 +32,13 @@
 #        ifndef FEE_PAGE_COUNT
 #            define FEE_PAGE_COUNT 4  // How many pages are used
 #        endif
+#    elif defined(STM32F401xC) || defined(STM32F405xG) || defined(STM32F411xE)
+#        ifndef FEE_PAGE_SIZE
+#            define FEE_PAGE_SIZE 0x4000  // Page size = 16KByte
+#        endif
+#        ifndef FEE_PAGE_COUNT
+#            define FEE_PAGE_COUNT 1  // How many pages are used
+#        endif
 #    endif
 #endif
@@ -40,17 +47,21 @@
 #        define FEE_MCU_FLASH_SIZE 32  // Size in Kb
 #    elif defined(STM32F103xB) || defined(STM32F072xB) || defined(STM32F070xB)
 #        define FEE_MCU_FLASH_SIZE 128  // Size in Kb
-#    elif defined(STM32F303xC)
+#    elif defined(STM32F303xC) || defined(STM32F401xC)
 #        define FEE_MCU_FLASH_SIZE 256  // Size in Kb
-#    elif defined(STM32F103xE)
+#    elif defined(STM32F103xE) || defined(STM32F411xE)
 #        define FEE_MCU_FLASH_SIZE 512  // Size in Kb
+#    elif defined(STM32F405xG)
+#        define FEE_MCU_FLASH_SIZE 1024  // Size in Kb
 #    endif
 #endif
 /* Start of the emulated eeprom */
 #if !defined(FEE_PAGE_BASE_ADDRESS)
-#    if 0
+#    if defined(STM32F401xC) || defined(STM32F405xG) || defined(STM32F411xE)
-/* TODO: Add support for F4 */
+#        ifndef FEE_PAGE_BASE_ADDRESS
+#            define FEE_PAGE_BASE_ADDRESS 0x08004000  // bodge to force 2nd 16k page
+#        endif
 #    else
 #        ifndef FEE_FLASH_BASE
 #            define FEE_FLASH_BASE 0x8000000
diff --git a/tmk_core/common/chibios/flash_stm32.c b/tmk_core/common/chibios/flash_stm32.c
index 6b80ff71c..8f10903d3 100644
--- a/tmk_core/common/chibios/flash_stm32.c
+++ b/tmk_core/common/chibios/flash_stm32.c
@@ -23,6 +23,29 @@
 #    define FLASH_SR_WRPERR FLASH_SR_WRPRTERR
 #endif
+#if defined(EEPROM_EMU_STM32F401xC)
+#    define FLASH_SR_PGERR (FLASH_SR_PGSERR | FLASH_SR_PGPERR | FLASH_SR_PGAERR)
+#    define FLASH_KEY1 0x45670123U
+#    define FLASH_KEY2 0xCDEF89ABU
+static uint8_t ADDR2PAGE(uint32_t Page_Address) {
+    switch (Page_Address) {
+        case 0x08000000 ... 0x08003FFF:
+            return 0;
+        case 0x08004000 ... 0x08007FFF:
+            return 1;
+        case 0x08008000 ... 0x0800BFFF:
+            return 2;
+        case 0x0800C000 ... 0x0800FFFF:
+            return 3;
+    }
+    // TODO: bad times...
+    return 7;
+}
+#endif
 /* Delay definition */
 #define EraseTimeout ((uint32_t)0x00000FFF)
 #define ProgramTimeout ((uint32_t)0x0000001F)
@@ -53,7 +76,9 @@ FLASH_Status FLASH_GetStatus(void) {
    if ((FLASH->SR & FLASH_SR_WRPERR) != 0) return FLASH_ERROR_WRP;
+#if defined(FLASH_OBR_OPTERR)
    if ((FLASH->SR & FLASH_OBR_OPTERR) != 0) return FLASH_ERROR_OPT;
+#endif
    return FLASH_COMPLETE;
 }
@@ -95,15 +120,24 @@ FLASH_Status FLASH_ErasePage(uint32_t Page_Address) {
    if (status == FLASH_COMPLETE) {
        /* if the previous operation is completed, proceed to erase the page */
+#if defined(FLASH_CR_SNB)
+        FLASH->CR &= ~FLASH_CR_SNB;
+        FLASH->CR |= FLASH_CR_SER | (ADDR2PAGE(Page_Address) << FLASH_CR_SNB_Pos);
+#else
        FLASH->CR |= FLASH_CR_PER;
        FLASH->AR = Page_Address;
+#endif
        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 */
+            /* if the erase operation is completed, disable the configured Bits */
+#if defined(FLASH_CR_SNB)
+            FLASH->CR &= ~(FLASH_CR_SER | FLASH_CR_SNB);
+#else
            FLASH->CR &= ~FLASH_CR_PER;
+#endif
        }
        FLASH->SR = (FLASH_SR_EOP | FLASH_SR_PGERR | FLASH_SR_WRPERR);
    }
@@ -126,6 +160,11 @@ FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data) {
        status = FLASH_WaitForLastOperation(ProgramTimeout);
        if (status == FLASH_COMPLETE) {
            /* if the previous operation is completed, proceed to program the new data */
+#if defined(FLASH_CR_PSIZE)
+            FLASH->CR &= ~FLASH_CR_PSIZE;
+            FLASH->CR |= FLASH_CR_PSIZE_0;
+#endif
            FLASH->CR |= FLASH_CR_PG;
            *(__IO uint16_t*)Address = Data;
            /* Wait for last operation to be completed */
diff --git a/tmk_core/common/chibios/suspend.c b/tmk_core/common/chibios/suspend.c
index 38517e06f..9310a9992 100644
--- a/tmk_core/common/chibios/suspend.c
+++ b/tmk_core/common/chibios/suspend.c
@@ -7,30 +7,12 @@
 #include "action.h"
 #include "action_util.h"
 #include "mousekey.h"
+#include "programmable_button.h"
 #include "host.h"
 #include "suspend.h"
 #include "led.h"
 #include "wait.h"
-#ifdef AUDIO_ENABLE
-#    include "audio.h"
-#endif /* AUDIO_ENABLE */
-#ifdef BACKLIGHT_ENABLE
-#    include "backlight.h"
-#endif
-#if defined(RGBLIGHT_SLEEP) && defined(RGBLIGHT_ENABLE)
-#    include "rgblight.h"
-#endif
-#ifdef LED_MATRIX_ENABLE
-#    include "led_matrix.h"
-#endif
-#ifdef RGB_MATRIX_ENABLE
-#    include "rgb_matrix.h"
-#endif
 /** \brief suspend idle
 *
 * FIXME: needs doc
@@ -40,61 +22,12 @@ void suspend_idle(uint8_t time) {
    wait_ms(time);
 }
-/** \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 suspend power down
 *
 * FIXME: needs doc
 */
 void suspend_power_down(void) {
-#ifdef BACKLIGHT_ENABLE
+    suspend_power_down_quantum();
-    backlight_set(0);
-#endif
-#ifdef LED_MATRIX_ENABLE
-    led_matrix_task();
-#endif
-#ifdef RGB_MATRIX_ENABLE
-    rgb_matrix_task();
-#endif
-    // Turn off LED indicators
-    uint8_t leds_off = 0;
-#if defined(BACKLIGHT_CAPS_LOCK) && defined(BACKLIGHT_ENABLE)
-    if (is_backlight_enabled()) {
-        // Don't try to turn off Caps Lock indicator as it is backlight and backlight is already off
-        leds_off |= (1 << USB_LED_CAPS_LOCK);
-    }
-#endif
-    led_set(leds_off);
-    // TODO: figure out what to power down and how
-    // shouldn't power down TPM/FTM if we want a breathing LED
-    // also shouldn't power down USB
-#if defined(RGBLIGHT_SLEEP) && defined(RGBLIGHT_ENABLE)
-    rgblight_suspend();
-#endif
-#if defined(LED_MATRIX_ENABLE)
-    led_matrix_set_suspend_state(true);
-#endif
-#if defined(RGB_MATRIX_ENABLE)
-    rgb_matrix_set_suspend_state(true);
-#endif
-#ifdef AUDIO_ENABLE
-    stop_all_notes();
-#endif /* AUDIO_ENABLE */
-    suspend_power_down_kb();
    // on AVR, this enables the watchdog for 15ms (max), and goes to
    // SLEEP_MODE_PWR_DOWN
@@ -147,23 +80,13 @@ void suspend_wakeup_init(void) {
 #ifdef MOUSEKEY_ENABLE
    mousekey_clear();
 #endif /* MOUSEKEY_ENABLE */
+#ifdef PROGRAMMABLE_BUTTON_ENABLE
+    programmable_button_clear();
+#endif /* PROGRAMMABLE_BUTTON_ENABLE */
 #ifdef EXTRAKEY_ENABLE
    host_system_send(0);
    host_consumer_send(0);
 #endif /* EXTRAKEY_ENABLE */
-#ifdef BACKLIGHT_ENABLE
-    backlight_init();
-#endif /* BACKLIGHT_ENABLE */
-    led_set(host_keyboard_leds());
-#if defined(RGBLIGHT_SLEEP) && defined(RGBLIGHT_ENABLE)
-    rgblight_wakeup();
-#endif
-#if defined(LED_MATRIX_ENABLE)
+    suspend_wakeup_init_quantum();
-    led_matrix_set_suspend_state(false);
-#endif
-#if defined(RGB_MATRIX_ENABLE)
-    rgb_matrix_set_suspend_state(false);
-#endif
-    suspend_wakeup_init_kb();
 }
diff --git a/tmk_core/common/host.c b/tmk_core/common/host.c
index f0c396b18..56d4bb084 100644
--- a/tmk_core/common/host.c
+++ b/tmk_core/common/host.c
@@ -30,8 +30,9 @@ extern keymap_config_t keymap_config;
 #endif
 static host_driver_t *driver;
-static uint16_t       last_system_report   = 0;
+static uint16_t       last_system_report              = 0;
-static uint16_t       last_consumer_report = 0;
+static uint16_t       last_consumer_report            = 0;
+static uint32_t       last_programmable_button_report = 0;
 void host_set_driver(host_driver_t *d) { driver = d; }
@@ -122,6 +123,16 @@ void host_digitizer_send(digitizer_t *digitizer) {
 __attribute__((weak)) void send_digitizer(report_digitizer_t *report) {}
+void host_programmable_button_send(uint32_t report) {
+    if (report == last_programmable_button_report) return;
+    last_programmable_button_report = report;
+    if (!driver) return;
+    (*driver->send_programmable_button)(report);
+}
 uint16_t host_last_system_report(void) { return last_system_report; }
 uint16_t host_last_consumer_report(void) { return last_consumer_report; }
+uint32_t host_last_programmable_button_report(void) { return last_programmable_button_report; }
diff --git a/tmk_core/common/host.h b/tmk_core/common/host.h
index 2cffef6e1..6b15f0d0c 100644
--- a/tmk_core/common/host.h
+++ b/tmk_core/common/host.h
@@ -47,9 +47,11 @@ void    host_keyboard_send(report_keyboard_t *report);
 void    host_mouse_send(report_mouse_t *report);
 void    host_system_send(uint16_t data);
 void    host_consumer_send(uint16_t data);
+void    host_programmable_button_send(uint32_t data);
 uint16_t host_last_system_report(void);
 uint16_t host_last_consumer_report(void);
+uint32_t host_last_programmable_button_report(void);
 #ifdef __cplusplus
 }
diff --git a/tmk_core/common/host_driver.h b/tmk_core/common/host_driver.h
index 2aebca043..affd0dcb3 100644
--- a/tmk_core/common/host_driver.h
+++ b/tmk_core/common/host_driver.h
@@ -29,6 +29,7 @@ typedef struct {
    void (*send_mouse)(report_mouse_t *);
    void (*send_system)(uint16_t);
    void (*send_consumer)(uint16_t);
+    void (*send_programmable_button)(uint32_t);
 } host_driver_t;
 void send_digitizer(report_digitizer_t *report);
 \ No newline at end of file
diff --git a/tmk_core/common/report.h b/tmk_core/common/report.h
index f2223e806..1adc892f3 100644
--- a/tmk_core/common/report.h
+++ b/tmk_core/common/report.h
@@ -29,6 +29,7 @@ enum hid_report_ids {
    REPORT_ID_MOUSE,
    REPORT_ID_SYSTEM,
    REPORT_ID_CONSUMER,
+    REPORT_ID_PROGRAMMABLE_BUTTON,
    REPORT_ID_NKRO,
    REPORT_ID_JOYSTICK,
    REPORT_ID_DIGITIZER
@@ -196,6 +197,11 @@ typedef struct {
 } __attribute__((packed)) report_extra_t;
 typedef struct {
+    uint8_t  report_id;
+    uint32_t usage;
+} __attribute__((packed)) report_programmable_button_t;
+typedef struct {
 #ifdef MOUSE_SHARED_EP
    uint8_t report_id;
 #endif
diff --git a/tmk_core/common/suspend.h b/tmk_core/common/suspend.h
index 95845e4b6..081735f90 100644
--- a/tmk_core/common/suspend.h
+++ b/tmk_core/common/suspend.h
@@ -10,8 +10,10 @@ void suspend_wakeup_init(void);
 void suspend_wakeup_init_user(void);
 void suspend_wakeup_init_kb(void);
+void suspend_wakeup_init_quantum(void);
 void suspend_power_down_user(void);
 void suspend_power_down_kb(void);
+void suspend_power_down_quantum(void);
 #ifndef USB_SUSPEND_WAKEUP_DELAY
 #    define USB_SUSPEND_WAKEUP_DELAY 0
diff --git a/tmk_core/common/sync_timer.c b/tmk_core/common/sync_timer.c
index 68b92d8b4..de24b463b 100644
--- a/tmk_core/common/sync_timer.c
+++ b/tmk_core/common/sync_timer.c
@@ -26,7 +26,7 @@ SOFTWARE.
 #include "sync_timer.h"
 #include "keyboard.h"
-#if (defined(SPLIT_KEYBOARD) || defined(SERIAL_LINK_ENABLE)) && !defined(DISABLE_SYNC_TIMER)
+#if defined(SPLIT_KEYBOARD) && !defined(DISABLE_SYNC_TIMER)
 volatile int32_t sync_timer_ms;
 void sync_timer_init(void) { sync_timer_ms = 0; }
diff --git a/tmk_core/common/sync_timer.h b/tmk_core/common/sync_timer.h
index 744e2b50d..9ddef45bb 100644
--- a/tmk_core/common/sync_timer.h
+++ b/tmk_core/common/sync_timer.h
@@ -32,7 +32,7 @@ SOFTWARE.
 extern "C" {
 #endif
-#if (defined(SPLIT_KEYBOARD) || defined(SERIAL_LINK_ENABLE)) && !defined(DISABLE_SYNC_TIMER)
+#if defined(SPLIT_KEYBOARD) && !defined(DISABLE_SYNC_TIMER)
 void     sync_timer_init(void);
 void     sync_timer_update(uint32_t time);
 uint16_t sync_timer_read(void);
diff --git a/tmk_core/common/test/rules.mk b/tmk_core/common/test/rules.mk
index 48632a095..73d2302da 100644
--- a/tmk_core/common/test/rules.mk
+++ b/tmk_core/common/test/rules.mk
@@ -16,6 +16,7 @@ eeprom_stm32_tiny_INC := $(eeprom_stm32_INC)
 eeprom_stm32_large_INC := $(eeprom_stm32_INC)
 eeprom_stm32_SRC := \
+        $(TOP_DIR)/drivers/eeprom/eeprom_driver.c \
        $(TMK_PATH)/common/test/eeprom_stm32_tests.cpp \
        $(TMK_PATH)/common/test/flash_stm32_mock.c \
        $(TMK_PATH)/common/chibios/eeprom_stm32.c
diff --git a/tmk_core/protocol/chibios/chibios.c b/tmk_core/protocol/chibios/chibios.c
index 78a2e3fcb..c860328c8 100644
--- a/tmk_core/protocol/chibios/chibios.c
+++ b/tmk_core/protocol/chibios/chibios.c
@@ -27,6 +27,7 @@
 #include "keyboard.h"
 #include "action.h"
 #include "action_util.h"
+#include "usb_device_state.h"
 #include "mousekey.h"
 #include "led.h"
 #include "sendchar.h"
@@ -42,12 +43,6 @@
 #ifdef SLEEP_LED_ENABLE
 #    include "sleep_led.h"
 #endif
-#ifdef SERIAL_LINK_ENABLE
-#    include "serial_link/system/serial_link.h"
-#endif
-#ifdef VISUALIZER_ENABLE
-#    include "visualizer/visualizer.h"
-#endif
 #ifdef MIDI_ENABLE
 #    include "qmk_midi.h"
 #endif
@@ -139,6 +134,8 @@ void boardInit(void) {
 }
 void protocol_setup(void) {
+    usb_device_state_init();
    // TESTING
    // chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
@@ -154,19 +151,11 @@ void protocol_init(void) {
    setup_midi();
 #endif
-#ifdef SERIAL_LINK_ENABLE
-    init_serial_link();
-#endif
-#ifdef VISUALIZER_ENABLE
-    visualizer_init();
-#endif
    host_driver_t *driver = NULL;
-    /* Wait until the USB or serial link is active */
+    /* Wait until USB is active */
    while (true) {
-#if defined(WAIT_FOR_USB) || defined(SERIAL_LINK_ENABLE)
+#if defined(WAIT_FOR_USB)
        if (USB_DRIVER.state == USB_ACTIVE) {
            driver = &chibios_driver;
            break;
@@ -175,13 +164,6 @@ void protocol_init(void) {
        driver = &chibios_driver;
        break;
 #endif
-#ifdef SERIAL_LINK_ENABLE
-        if (is_serial_link_connected()) {
-            driver = get_serial_link_driver();
-            break;
-        }
-        serial_link_update();
-#endif
        wait_ms(50);
    }
@@ -211,14 +193,8 @@ void protocol_task(void) {
 #if !defined(NO_USB_STARTUP_CHECK)
    if (USB_DRIVER.state == USB_SUSPENDED) {
        print("[s]");
-#    ifdef VISUALIZER_ENABLE
-        visualizer_suspend();
-#    endif
        while (USB_DRIVER.state == USB_SUSPENDED) {
            /* Do this in the suspended state */
-#    ifdef SERIAL_LINK_ENABLE
-            serial_link_update();
-#    endif
            suspend_power_down();  // on AVR this deep sleeps for 15ms
            /* Remote wakeup */
            if (suspend_wakeup_condition()) {
@@ -232,10 +208,6 @@ void protocol_task(void) {
 #    ifdef MOUSEKEY_ENABLE
        mousekey_send();
 #    endif /* MOUSEKEY_ENABLE */
-#    ifdef VISUALIZER_ENABLE
-        visualizer_resume();
-#    endif
    }
 #endif
diff --git a/tmk_core/protocol/chibios/usb_main.c b/tmk_core/protocol/chibios/usb_main.c
index cc282e6a9..9b139b399 100644
--- a/tmk_core/protocol/chibios/usb_main.c
+++ b/tmk_core/protocol/chibios/usb_main.c
@@ -39,6 +39,7 @@
 #    include "led.h"
 #endif
 #include "wait.h"
+#include "usb_device_state.h"
 #include "usb_descriptor.h"
 #include "usb_driver.h"
@@ -412,6 +413,7 @@ static inline bool usb_event_queue_dequeue(usbevent_t *event) {
 }
 static inline void usb_event_suspend_handler(void) {
+    usb_device_state_set_suspend(USB_DRIVER.configuration != 0, USB_DRIVER.configuration);
 #ifdef SLEEP_LED_ENABLE
    sleep_led_enable();
 #endif /* SLEEP_LED_ENABLE */
@@ -419,6 +421,7 @@ static inline void usb_event_suspend_handler(void) {
 static inline void usb_event_wakeup_handler(void) {
    suspend_wakeup_init();
+    usb_device_state_set_resume(USB_DRIVER.configuration != 0, USB_DRIVER.configuration);
 #ifdef SLEEP_LED_ENABLE
    sleep_led_disable();
    // NOTE: converters may not accept this
@@ -440,6 +443,15 @@ void usb_event_queue_task(void) {
                last_suspend_state = false;
                usb_event_wakeup_handler();
                break;
+            case USB_EVENT_CONFIGURED:
+                usb_device_state_set_configuration(USB_DRIVER.configuration != 0, USB_DRIVER.configuration);
+                break;
+            case USB_EVENT_UNCONFIGURED:
+                usb_device_state_set_configuration(false, 0);
+                break;
+            case USB_EVENT_RESET:
+                usb_device_state_set_reset();
+                break;
            default:
                // Nothing to do, we don't handle it.
                break;
@@ -482,13 +494,14 @@ static void usb_event_cb(USBDriver *usbp, usbevent_t event) {
            if (last_suspend_state) {
                usb_event_queue_enqueue(USB_EVENT_WAKEUP);
            }
+            usb_event_queue_enqueue(USB_EVENT_CONFIGURED);
            return;
        case USB_EVENT_SUSPEND:
-            usb_event_queue_enqueue(USB_EVENT_SUSPEND);
            /* Falls into.*/
        case USB_EVENT_UNCONFIGURED:
            /* Falls into.*/
        case USB_EVENT_RESET:
+            usb_event_queue_enqueue(event);
            for (int i = 0; i < NUM_USB_DRIVERS; i++) {
                chSysLockFromISR();
                /* Disconnection event on suspend.*/
diff --git a/tmk_core/protocol/ibm4704.c b/tmk_core/protocol/ibm4704.c
deleted file mode 100644
index a19443976..000000000
--- a/tmk_core/protocol/ibm4704.c
+++ /dev/null
@@ -1,185 +0,0 @@
-/*
-Copyright 2010,2011,2012,2013 Jun WAKO <wakojun@gmail.com>
-*/
-#include <stdbool.h>
-#include <util/delay.h>
-#include "debug.h"
-#include "ring_buffer.h"
-#include "ibm4704.h"
-#define WAIT(stat, us, err)      \
-    do {                         \
-        if (!wait_##stat(us)) {  \
-            ibm4704_error = err; \
-            goto ERROR;          \
-        }                        \
-    } while (0)
-uint8_t ibm4704_error = 0;
-void ibm4704_init(void) {
-    inhibit();  // keep keyboard from sending
-    IBM4704_INT_INIT();
-    IBM4704_INT_ON();
-    idle();  // allow keyboard sending
-}
-/*
-Host to Keyboard
----------------
-Data bits are LSB first and Parity is odd. Clock has around 60us high and 30us low part.
-        ____        __   __   __   __   __   __   __   __   __   ________
-Clock       \______/  \_/  \_/  \_/  \_/  \_/  \_/  \_/  \_/  \_/
-            ^   ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ___
-Data    ____|__/    X____X____X____X____X____X____X____X____X____X   \___
-            |  Start   0    1    2    3    4    5    6    7    P   Stop
-            Request by host
-Start bit:  can be long as 300-350us.
-Request:    Host pulls Clock line down to request to send a command.
-Timing:     After Request keyboard pull up Data and down Clock line to low for start bit.
-            After request host release Clock line once Data line becomes hi.
-            Host writes a bit while Clock is hi and Keyboard reads while low.
-Stop bit:   Host releases or pulls up Data line to hi after 9th clock and waits for keyboard pull down the line to lo.
-*/
-uint8_t ibm4704_send(uint8_t data) {
-    bool parity   = true;  // odd parity
-    ibm4704_error = 0;
-    IBM4704_INT_OFF();
-    /* Request to send */
-    idle();
-    clock_lo();
-    /* wait for Start bit(Clock:lo/Data:hi) */
-    WAIT(data_hi, 300, 0x30);
-    /* Data bit */
-    for (uint8_t i = 0; i < 8; i++) {
-        WAIT(clock_hi, 100, 0x40 + i);
-        if (data & (1 << i)) {
-            parity = !parity;
-            data_hi();
-        } else {
-            data_lo();
-        }
-        WAIT(clock_lo, 100, 0x48 + i);
-    }
-    /* Parity bit */
-    WAIT(clock_hi, 100, 0x34);
-    if (parity) {
-        data_hi();
-    } else {
-        data_lo();
-    }
-    WAIT(clock_lo, 100, 0x35);
-    /* Stop bit */
-    WAIT(clock_hi, 100, 0x34);
-    data_hi();
-    /* End */
-    WAIT(data_lo, 100, 0x36);
-    idle();
-    IBM4704_INT_ON();
-    return 0;
-ERROR:
-    idle();
-    if (ibm4704_error > 0x30) {
-        xprintf("S:%02X ", ibm4704_error);
-    }
-    IBM4704_INT_ON();
-    return -1;
-}
-/* wait forever to receive data */
-uint8_t ibm4704_recv_response(void) {
-    while (!rbuf_has_data()) {
-        _delay_ms(1);
-    }
-    return rbuf_dequeue();
-}
-uint8_t ibm4704_recv(void) {
-    if (rbuf_has_data()) {
-        return rbuf_dequeue();
-    } else {
-        return -1;
-    }
-}
-/*
-Keyboard to Host
----------------
-Data bits are LSB first and Parity is odd. Clock has around 60us high and 30us low part.
-        ____       __   __   __   __   __   __   __   __   __   _______
-Clock       \_____/  \_/  \_/  \_/  \_/  \_/  \_/  \_/  \_/  \_/
-             ____ ____ ____ ____ ____ ____ ____ ____ ____ ____
-Data    ____/    X____X____X____X____X____X____X____X____X____X________
-            Start   0    1    2    3    4    5    6    7    P  Stop
-Start bit:  can be long as 300-350us.
-Inhibit:    Pull Data line down to inhibit keyboard to send.
-Timing:     Host reads bit while Clock is hi.(rising edge)
-Stop bit:   Keyboard pulls down Data line to lo after 9th clock.
-*/
-ISR(IBM4704_INT_VECT) {
-    static enum { BIT0, BIT1, BIT2, BIT3, BIT4, BIT5, BIT6, BIT7, PARITY, STOP } state = BIT0;
-    // LSB first
-    static uint8_t data = 0;
-    // Odd parity
-    static uint8_t parity = false;
-    ibm4704_error = 0;
-    switch (state) {
-        case BIT0:
-        case BIT1:
-        case BIT2:
-        case BIT3:
-        case BIT4:
-        case BIT5:
-        case BIT6:
-        case BIT7:
-            data >>= 1;
-            if (data_in()) {
-                data |= 0x80;
-                parity = !parity;
-            }
-            break;
-        case PARITY:
-            if (data_in()) {
-                parity = !parity;
-            }
-            if (!parity) goto ERROR;
-            break;
-        case STOP:
-            // Data:Low
-            WAIT(data_lo, 100, state);
-            if (!rbuf_enqueue(data)) {
-                print("rbuf: full\n");
-            }
-            ibm4704_error = IBM4704_ERR_NONE;
-            goto DONE;
-            break;
-        default:
-            goto ERROR;
-    }
-    state++;
-    goto RETURN;
-ERROR:
-    ibm4704_error = state;
-    while (ibm4704_send(0xFE)) _delay_ms(1);  // resend
-    xprintf("R:%02X%02X\n", state, data);
-DONE:
-    state  = BIT0;
-    data   = 0;
-    parity = false;
-RETURN:
-    return;
-}
diff --git a/tmk_core/protocol/ibm4704.h b/tmk_core/protocol/ibm4704.h
deleted file mode 100644
index 4f88d148b..000000000
--- a/tmk_core/protocol/ibm4704.h
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
-Copyright 2014 Jun WAKO <wakojun@gmail.com>
-*/
-#pragma once
-#define IBM4704_ERR_NONE 0
-#define IBM4704_ERR_PARITY 0x70
-void    ibm4704_init(void);
-uint8_t ibm4704_send(uint8_t data);
-uint8_t ibm4704_recv_response(void);
-uint8_t ibm4704_recv(void);
-/* Check pin configuration */
-#if !(defined(IBM4704_CLOCK_PORT) && defined(IBM4704_CLOCK_PIN) && defined(IBM4704_CLOCK_DDR) && defined(IBM4704_CLOCK_BIT))
-#    error "ibm4704 clock pin configuration is required in config.h"
-#endif
-#if !(defined(IBM4704_DATA_PORT) && defined(IBM4704_DATA_PIN) && defined(IBM4704_DATA_DDR) && defined(IBM4704_DATA_BIT))
-#    error "ibm4704 data pin configuration is required in config.h"
-#endif
-/*--------------------------------------------------------------------
- * static functions
- *------------------------------------------------------------------*/
-static inline void clock_lo(void) {
-    IBM4704_CLOCK_PORT &= ~(1 << IBM4704_CLOCK_BIT);
-    IBM4704_CLOCK_DDR |= (1 << IBM4704_CLOCK_BIT);
-}
-static inline void clock_hi(void) {
-    /* input with pull up */
-    IBM4704_CLOCK_DDR &= ~(1 << IBM4704_CLOCK_BIT);
-    IBM4704_CLOCK_PORT |= (1 << IBM4704_CLOCK_BIT);
-}
-static inline bool clock_in(void) {
-    IBM4704_CLOCK_DDR &= ~(1 << IBM4704_CLOCK_BIT);
-    IBM4704_CLOCK_PORT |= (1 << IBM4704_CLOCK_BIT);
-    _delay_us(1);
-    return IBM4704_CLOCK_PIN & (1 << IBM4704_CLOCK_BIT);
-}
-static inline void data_lo(void) {
-    IBM4704_DATA_PORT &= ~(1 << IBM4704_DATA_BIT);
-    IBM4704_DATA_DDR |= (1 << IBM4704_DATA_BIT);
-}
-static inline void data_hi(void) {
-    /* input with pull up */
-    IBM4704_DATA_DDR &= ~(1 << IBM4704_DATA_BIT);
-    IBM4704_DATA_PORT |= (1 << IBM4704_DATA_BIT);
-}
-static inline bool data_in(void) {
-    IBM4704_DATA_DDR &= ~(1 << IBM4704_DATA_BIT);
-    IBM4704_DATA_PORT |= (1 << IBM4704_DATA_BIT);
-    _delay_us(1);
-    return IBM4704_DATA_PIN & (1 << IBM4704_DATA_BIT);
-}
-static inline uint16_t wait_clock_lo(uint16_t us) {
-    while (clock_in() && us) {
-        asm("");
-        _delay_us(1);
-        us--;
-    }
-    return us;
-}
-static inline uint16_t wait_clock_hi(uint16_t us) {
-    while (!clock_in() && us) {
-        asm("");
-        _delay_us(1);
-        us--;
-    }
-    return us;
-}
-static inline uint16_t wait_data_lo(uint16_t us) {
-    while (data_in() && us) {
-        asm("");
-        _delay_us(1);
-        us--;
-    }
-    return us;
-}
-static inline uint16_t wait_data_hi(uint16_t us) {
-    while (!data_in() && us) {
-        asm("");
-        _delay_us(1);
-        us--;
-    }
-    return us;
-}
-/* idle state that device can send */
-static inline void idle(void) {
-    clock_hi();
-    data_hi();
-}
-/* inhibit device to send
- * keyboard checks Data line on start bit(Data:hi) and it stops sending if Data line is low.
- */
-static inline void inhibit(void) {
-    clock_hi();
-    data_lo();
-}
diff --git a/tmk_core/protocol/lufa.mk b/tmk_core/protocol/lufa.mk
index c8935dacb..00fec478a 100644
--- a/tmk_core/protocol/lufa.mk
+++ b/tmk_core/protocol/lufa.mk
@@ -3,7 +3,6 @@ LUFA_DIR = protocol/lufa
 # Path to the LUFA library
 LUFA_PATH = $(LIB_PATH)/lufa
 # Create the LUFA source path variables by including the LUFA makefile
 ifneq (, $(wildcard $(LUFA_PATH)/LUFA/Build/lufa_sources.mk))
    # New build system from 20120730
@@ -22,23 +21,6 @@ ifeq ($(strip $(MIDI_ENABLE)), yes)
        include $(TMK_PATH)/protocol/midi.mk
 endif
-ifeq ($(strip $(BLUETOOTH_ENABLE)), yes)
-        LUFA_SRC += outputselect.c \
-                $(TMK_DIR)/protocol/serial_uart.c
-endif
-ifeq ($(strip $(BLUETOOTH)), AdafruitBLE)
-        LUFA_SRC += spi_master.c \
-                analog.c \
-                outputselect.c \
-                $(LUFA_DIR)/adafruit_ble.cpp
-endif
-ifeq ($(strip $(BLUETOOTH)), RN42)
-        LUFA_SRC += outputselect.c \
-                $(TMK_DIR)/protocol/serial_uart.c
-endif
 ifeq ($(strip $(VIRTSER_ENABLE)), yes)
        LUFA_SRC += $(LUFA_ROOT_PATH)/Drivers/USB/Class/Device/CDCClassDevice.c
 endif
@@ -50,19 +32,10 @@ SRC += $(LUFA_DIR)/usb_util.c
 VPATH += $(TMK_PATH)/$(LUFA_DIR)
 VPATH += $(LUFA_PATH)
-# Option modules
-#ifdef $(or MOUSEKEY_ENABLE, PS2_MOUSE_ENABLE)
-#endif
-#ifdef EXTRAKEY_ENABLE
-#endif
 # LUFA library compile-time options and predefined tokens
 LUFA_OPTS  = -DUSB_DEVICE_ONLY
 LUFA_OPTS += -DUSE_FLASH_DESCRIPTORS
 LUFA_OPTS += -DUSE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
-#LUFA_OPTS += -DINTERRUPT_CONTROL_ENDPOINT
-LUFA_OPTS += -DFIXED_CONTROL_ENDPOINT_SIZE=8
 LUFA_OPTS += -DFIXED_CONTROL_ENDPOINT_SIZE=8
 LUFA_OPTS += -DFIXED_NUM_CONFIGURATIONS=1
diff --git a/tmk_core/protocol/lufa/adafruit_ble.cpp b/tmk_core/protocol/lufa/adafruit_ble.cpp
deleted file mode 100644
index 3f2cc3573..000000000
--- a/tmk_core/protocol/lufa/adafruit_ble.cpp
+++ /dev/null
@@ -1,701 +0,0 @@
-#include "adafruit_ble.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <alloca.h>
-#include "debug.h"
-#include "timer.h"
-#include "action_util.h"
-#include "ringbuffer.hpp"
-#include <string.h>
-#include "spi_master.h"
-#include "wait.h"
-#include "analog.h"
-#include "progmem.h"
-// These are the pin assignments for the 32u4 boards.
-// You may define them to something else in your config.h
-// if yours is wired up differently.
-#ifndef AdafruitBleResetPin
-#    define AdafruitBleResetPin D4
-#endif
-#ifndef AdafruitBleCSPin
-#    define AdafruitBleCSPin B4
-#endif
-#ifndef AdafruitBleIRQPin
-#    define AdafruitBleIRQPin E6
-#endif
-#ifndef AdafruitBleSpiClockSpeed
-#    define AdafruitBleSpiClockSpeed 4000000UL  // SCK frequency
-#endif
-#define SCK_DIVISOR (F_CPU / AdafruitBleSpiClockSpeed)
-#define SAMPLE_BATTERY
-#define ConnectionUpdateInterval 1000 /* milliseconds */
-#ifndef BATTERY_LEVEL_PIN
-#    define BATTERY_LEVEL_PIN B5
-#endif
-static struct {
-    bool is_connected;
-    bool initialized;
-    bool configured;
-#define ProbedEvents 1
-#define UsingEvents 2
-    bool event_flags;
-#ifdef SAMPLE_BATTERY
-    uint16_t last_battery_update;
-    uint32_t vbat;
-#endif
-    uint16_t last_connection_update;
-} state;
-// Commands are encoded using SDEP and sent via SPI
-// https://github.com/adafruit/Adafruit_BluefruitLE_nRF51/blob/master/SDEP.md
-#define SdepMaxPayload 16
-struct sdep_msg {
-    uint8_t type;
-    uint8_t cmd_low;
-    uint8_t cmd_high;
-    struct __attribute__((packed)) {
-        uint8_t len : 7;
-        uint8_t more : 1;
-    };
-    uint8_t payload[SdepMaxPayload];
-} __attribute__((packed));
-// The recv latency is relatively high, so when we're hammering keys quickly,
-// we want to avoid waiting for the responses in the matrix loop.  We maintain
-// a short queue for that.  Since there is quite a lot of space overhead for
-// the AT command representation wrapped up in SDEP, we queue the minimal
-// information here.
-enum queue_type {
-    QTKeyReport,  // 1-byte modifier + 6-byte key report
-    QTConsumer,   // 16-bit key code
-#ifdef MOUSE_ENABLE
-    QTMouseMove,  // 4-byte mouse report
-#endif
-};
-struct queue_item {
-    enum queue_type queue_type;
-    uint16_t        added;
-    union __attribute__((packed)) {
-        struct __attribute__((packed)) {
-            uint8_t modifier;
-            uint8_t keys[6];
-        } key;
-        uint16_t consumer;
-        struct __attribute__((packed)) {
-            int8_t  x, y, scroll, pan;
-            uint8_t buttons;
-        } mousemove;
-    };
-};
-// Items that we wish to send
-static RingBuffer<queue_item, 40> send_buf;
-// Pending response; while pending, we can't send any more requests.
-// This records the time at which we sent the command for which we
-// are expecting a response.
-static RingBuffer<uint16_t, 2> resp_buf;
-static bool process_queue_item(struct queue_item *item, uint16_t timeout);
-enum sdep_type {
-    SdepCommand       = 0x10,
-    SdepResponse      = 0x20,
-    SdepAlert         = 0x40,
-    SdepError         = 0x80,
-    SdepSlaveNotReady = 0xFE,  // Try again later
-    SdepSlaveOverflow = 0xFF,  // You read more data than is available
-};
-enum ble_cmd {
-    BleInitialize = 0xBEEF,
-    BleAtWrapper  = 0x0A00,
-    BleUartTx     = 0x0A01,
-    BleUartRx     = 0x0A02,
-};
-enum ble_system_event_bits {
-    BleSystemConnected    = 0,
-    BleSystemDisconnected = 1,
-    BleSystemUartRx       = 8,
-    BleSystemMidiRx       = 10,
-};
-#define SdepTimeout 150             /* milliseconds */
-#define SdepShortTimeout 10         /* milliseconds */
-#define SdepBackOff 25              /* microseconds */
-#define BatteryUpdateInterval 10000 /* milliseconds */
-static bool at_command(const char *cmd, char *resp, uint16_t resplen, bool verbose, uint16_t timeout = SdepTimeout);
-static bool at_command_P(const char *cmd, char *resp, uint16_t resplen, bool verbose = false);
-// Send a single SDEP packet
-static bool sdep_send_pkt(const struct sdep_msg *msg, uint16_t timeout) {
-    spi_start(AdafruitBleCSPin, false, 0, SCK_DIVISOR);
-    uint16_t timerStart = timer_read();
-    bool     success    = false;
-    bool     ready      = false;
-    do {
-        ready = spi_write(msg->type) != SdepSlaveNotReady;
-        if (ready) {
-            break;
-        }
-        // Release it and let it initialize
-        spi_stop();
-        wait_us(SdepBackOff);
-        spi_start(AdafruitBleCSPin, false, 0, SCK_DIVISOR);
-    } while (timer_elapsed(timerStart) < timeout);
-    if (ready) {
-        // Slave is ready; send the rest of the packet
-        spi_transmit(&msg->cmd_low, sizeof(*msg) - (1 + sizeof(msg->payload)) + msg->len);
-        success = true;
-    }
-    spi_stop();
-    return success;
-}
-static inline void sdep_build_pkt(struct sdep_msg *msg, uint16_t command, const uint8_t *payload, uint8_t len, bool moredata) {
-    msg->type     = SdepCommand;
-    msg->cmd_low  = command & 0xFF;
-    msg->cmd_high = command >> 8;
-    msg->len      = len;
-    msg->more     = (moredata && len == SdepMaxPayload) ? 1 : 0;
-    static_assert(sizeof(*msg) == 20, "msg is correctly packed");
-    memcpy(msg->payload, payload, len);
-}
-// Read a single SDEP packet
-static bool sdep_recv_pkt(struct sdep_msg *msg, uint16_t timeout) {
-    bool     success    = false;
-    uint16_t timerStart = timer_read();
-    bool     ready      = false;
-    do {
-        ready = readPin(AdafruitBleIRQPin);
-        if (ready) {
-            break;
-        }
-        wait_us(1);
-    } while (timer_elapsed(timerStart) < timeout);
-    if (ready) {
-        spi_start(AdafruitBleCSPin, false, 0, SCK_DIVISOR);
-        do {
-            // Read the command type, waiting for the data to be ready
-            msg->type = spi_read();
-            if (msg->type == SdepSlaveNotReady || msg->type == SdepSlaveOverflow) {
-                // Release it and let it initialize
-                spi_stop();
-                wait_us(SdepBackOff);
-                spi_start(AdafruitBleCSPin, false, 0, SCK_DIVISOR);
-                continue;
-            }
-            // Read the rest of the header
-            spi_receive(&msg->cmd_low, sizeof(*msg) - (1 + sizeof(msg->payload)));
-            // and get the payload if there is any
-            if (msg->len <= SdepMaxPayload) {
-                spi_receive(msg->payload, msg->len);
-            }
-            success = true;
-            break;
-        } while (timer_elapsed(timerStart) < timeout);
-        spi_stop();
-    }
-    return success;
-}
-static void resp_buf_read_one(bool greedy) {
-    uint16_t last_send;
-    if (!resp_buf.peek(last_send)) {
-        return;
-    }
-    if (readPin(AdafruitBleIRQPin)) {
-        struct sdep_msg msg;
-    again:
-        if (sdep_recv_pkt(&msg, SdepTimeout)) {
-            if (!msg.more) {
-                // We got it; consume this entry
-                resp_buf.get(last_send);
-                dprintf("recv latency %dms\n", TIMER_DIFF_16(timer_read(), last_send));
-            }
-            if (greedy && resp_buf.peek(last_send) && readPin(AdafruitBleIRQPin)) {
-                goto again;
-            }
-        }
-    } else if (timer_elapsed(last_send) > SdepTimeout * 2) {
-        dprintf("waiting_for_result: timeout, resp_buf size %d\n", (int)resp_buf.size());
-        // Timed out: consume this entry
-        resp_buf.get(last_send);
-    }
-}
-static void send_buf_send_one(uint16_t timeout = SdepTimeout) {
-    struct queue_item item;
-    // Don't send anything more until we get an ACK
-    if (!resp_buf.empty()) {
-        return;
-    }
-    if (!send_buf.peek(item)) {
-        return;
-    }
-    if (process_queue_item(&item, timeout)) {
-        // commit that peek
-        send_buf.get(item);
-        dprintf("send_buf_send_one: have %d remaining\n", (int)send_buf.size());
-    } else {
-        dprint("failed to send, will retry\n");
-        wait_ms(SdepTimeout);
-        resp_buf_read_one(true);
-    }
-}
-static void resp_buf_wait(const char *cmd) {
-    bool didPrint = false;
-    while (!resp_buf.empty()) {
-        if (!didPrint) {
-            dprintf("wait on buf for %s\n", cmd);
-            didPrint = true;
-        }
-        resp_buf_read_one(true);
-    }
-}
-static bool ble_init(void) {
-    state.initialized  = false;
-    state.configured   = false;
-    state.is_connected = false;
-    setPinInput(AdafruitBleIRQPin);
-    spi_init();
-    // Perform a hardware reset
-    setPinOutput(AdafruitBleResetPin);
-    writePinHigh(AdafruitBleResetPin);
-    writePinLow(AdafruitBleResetPin);
-    wait_ms(10);
-    writePinHigh(AdafruitBleResetPin);
-    wait_ms(1000);  // Give it a second to initialize
-    state.initialized = true;
-    return state.initialized;
-}
-static inline uint8_t min(uint8_t a, uint8_t b) { return a < b ? a : b; }
-static bool read_response(char *resp, uint16_t resplen, bool verbose) {
-    char *dest = resp;
-    char *end  = dest + resplen;
-    while (true) {
-        struct sdep_msg msg;
-        if (!sdep_recv_pkt(&msg, 2 * SdepTimeout)) {
-            dprint("sdep_recv_pkt failed\n");
-            return false;
-        }
-        if (msg.type != SdepResponse) {
-            *resp = 0;
-            return false;
-        }
-        uint8_t len = min(msg.len, end - dest);
-        if (len > 0) {
-            memcpy(dest, msg.payload, len);
-            dest += len;
-        }
-        if (!msg.more) {
-            // No more data is expected!
-            break;
-        }
-    }
-    // Ensure the response is NUL terminated
-    *dest = 0;
-    // "Parse" the result text; we want to snip off the trailing OK or ERROR line
-    // Rewind past the possible trailing CRLF so that we can strip it
-    --dest;
-    while (dest > resp && (dest[0] == '\n' || dest[0] == '\r')) {
-        *dest = 0;
-        --dest;
-    }
-    // Look back for start of preceeding line
-    char *last_line = strrchr(resp, '\n');
-    if (last_line) {
-        ++last_line;
-    } else {
-        last_line = resp;
-    }
-    bool              success       = false;
-    static const char kOK[] PROGMEM = "OK";
-    success = !strcmp_P(last_line, kOK);
-    if (verbose || !success) {
-        dprintf("result: %s\n", resp);
-    }
-    return success;
-}
-static bool at_command(const char *cmd, char *resp, uint16_t resplen, bool verbose, uint16_t timeout) {
-    const char *    end = cmd + strlen(cmd);
-    struct sdep_msg msg;
-    if (verbose) {
-        dprintf("ble send: %s\n", cmd);
-    }
-    if (resp) {
-        // They want to decode the response, so we need to flush and wait
-        // for all pending I/O to finish before we start this one, so
-        // that we don't confuse the results
-        resp_buf_wait(cmd);
-        *resp = 0;
-    }
-    // Fragment the command into a series of SDEP packets
-    while (end - cmd > SdepMaxPayload) {
-        sdep_build_pkt(&msg, BleAtWrapper, (uint8_t *)cmd, SdepMaxPayload, true);
-        if (!sdep_send_pkt(&msg, timeout)) {
-            return false;
-        }
-        cmd += SdepMaxPayload;
-    }
-    sdep_build_pkt(&msg, BleAtWrapper, (uint8_t *)cmd, end - cmd, false);
-    if (!sdep_send_pkt(&msg, timeout)) {
-        return false;
-    }
-    if (resp == NULL) {
-        uint16_t now = timer_read();
-        while (!resp_buf.enqueue(now)) {
-            resp_buf_read_one(false);
-        }
-        uint16_t later = timer_read();
-        if (TIMER_DIFF_16(later, now) > 0) {
-            dprintf("waited %dms for resp_buf\n", TIMER_DIFF_16(later, now));
-        }
-        return true;
-    }
-    return read_response(resp, resplen, verbose);
-}
-bool at_command_P(const char *cmd, char *resp, uint16_t resplen, bool verbose) {
-    char *cmdbuf = (char *)alloca(strlen_P(cmd) + 1);
-    strcpy_P(cmdbuf, cmd);
-    return at_command(cmdbuf, resp, resplen, verbose);
-}
-bool adafruit_ble_is_connected(void) { return state.is_connected; }
-bool adafruit_ble_enable_keyboard(void) {
-    char resbuf[128];
-    if (!state.initialized && !ble_init()) {
-        return false;
-    }
-    state.configured = false;
-    // Disable command echo
-    static const char kEcho[] PROGMEM = "ATE=0";
-    // Make the advertised name match the keyboard
-    static const char kGapDevName[] PROGMEM = "AT+GAPDEVNAME=" STR(PRODUCT);
-    // Turn on keyboard support
-    static const char kHidEnOn[] PROGMEM = "AT+BLEHIDEN=1";
-    // Adjust intervals to improve latency.  This causes the "central"
-    // system (computer/tablet) to poll us every 10-30 ms.  We can't
-    // set a smaller value than 10ms, and 30ms seems to be the natural
-    // processing time on my macbook.  Keeping it constrained to that
-    // feels reasonable to type to.
-    static const char kGapIntervals[] PROGMEM = "AT+GAPINTERVALS=10,30,,";
-    // Reset the device so that it picks up the above changes
-    static const char kATZ[] PROGMEM = "ATZ";
-    // Turn down the power level a bit
-    static const char  kPower[] PROGMEM             = "AT+BLEPOWERLEVEL=-12";
-    static PGM_P const configure_commands[] PROGMEM = {
-        kEcho, kGapIntervals, kGapDevName, kHidEnOn, kPower, kATZ,
-    };
-    uint8_t i;
-    for (i = 0; i < sizeof(configure_commands) / sizeof(configure_commands[0]); ++i) {
-        PGM_P cmd;
-        memcpy_P(&cmd, configure_commands + i, sizeof(cmd));
-        if (!at_command_P(cmd, resbuf, sizeof(resbuf))) {
-            dprintf("failed BLE command: %S: %s\n", cmd, resbuf);
-            goto fail;
-        }
-    }
-    state.configured = true;
-    // Check connection status in a little while; allow the ATZ time
-    // to kick in.
-    state.last_connection_update = timer_read();
-fail:
-    return state.configured;
-}
-static void set_connected(bool connected) {
-    if (connected != state.is_connected) {
-        if (connected) {
-            dprint("BLE connected\n");
-        } else {
-            dprint("BLE disconnected\n");
-        }
-        state.is_connected = connected;
-        // TODO: if modifiers are down on the USB interface and
-        // we cut over to BLE or vice versa, they will remain stuck.
-        // This feels like a good point to do something like clearing
-        // the keyboard and/or generating a fake all keys up message.
-        // However, I've noticed that it takes a couple of seconds
-        // for macOS to to start recognizing key presses after BLE
-        // is in the connected state, so I worry that doing that
-        // here may not be good enough.
-    }
-}
-void adafruit_ble_task(void) {
-    char resbuf[48];
-    if (!state.configured && !adafruit_ble_enable_keyboard()) {
-        return;
-    }
-    resp_buf_read_one(true);
-    send_buf_send_one(SdepShortTimeout);
-    if (resp_buf.empty() && (state.event_flags & UsingEvents) && readPin(AdafruitBleIRQPin)) {
-        // Must be an event update
-        if (at_command_P(PSTR("AT+EVENTSTATUS"), resbuf, sizeof(resbuf))) {
-            uint32_t mask = strtoul(resbuf, NULL, 16);
-            if (mask & BleSystemConnected) {
-                set_connected(true);
-            } else if (mask & BleSystemDisconnected) {
-                set_connected(false);
-            }
-        }
-    }
-    if (timer_elapsed(state.last_connection_update) > ConnectionUpdateInterval) {
-        bool shouldPoll = true;
-        if (!(state.event_flags & ProbedEvents)) {
-            // Request notifications about connection status changes.
-            // This only works in SPIFRIEND firmware > 0.6.7, which is why
-            // we check for this conditionally here.
-            // Note that at the time of writing, HID reports only work correctly
-            // with Apple products on firmware version 0.6.7!
-            // https://forums.adafruit.com/viewtopic.php?f=8&t=104052
-            if (at_command_P(PSTR("AT+EVENTENABLE=0x1"), resbuf, sizeof(resbuf))) {
-                at_command_P(PSTR("AT+EVENTENABLE=0x2"), resbuf, sizeof(resbuf));
-                state.event_flags |= UsingEvents;
-            }
-            state.event_flags |= ProbedEvents;
-            // leave shouldPoll == true so that we check at least once
-            // before relying solely on events
-        } else {
-            shouldPoll = false;
-        }
-        static const char kGetConn[] PROGMEM = "AT+GAPGETCONN";
-        state.last_connection_update         = timer_read();
-        if (at_command_P(kGetConn, resbuf, sizeof(resbuf))) {
-            set_connected(atoi(resbuf));
-        }
-    }
-#ifdef SAMPLE_BATTERY
-    if (timer_elapsed(state.last_battery_update) > BatteryUpdateInterval && resp_buf.empty()) {
-        state.last_battery_update = timer_read();
-        state.vbat = analogReadPin(BATTERY_LEVEL_PIN);
-    }
-#endif
-}
-static bool process_queue_item(struct queue_item *item, uint16_t timeout) {
-    char cmdbuf[48];
-    char fmtbuf[64];
-    // Arrange to re-check connection after keys have settled
-    state.last_connection_update = timer_read();
-#if 1
-    if (TIMER_DIFF_16(state.last_connection_update, item->added) > 0) {
-        dprintf("send latency %dms\n", TIMER_DIFF_16(state.last_connection_update, item->added));
-    }
-#endif
-    switch (item->queue_type) {
-        case QTKeyReport:
-            strcpy_P(fmtbuf, PSTR("AT+BLEKEYBOARDCODE=%02x-00-%02x-%02x-%02x-%02x-%02x-%02x"));
-            snprintf(cmdbuf, sizeof(cmdbuf), fmtbuf, item->key.modifier, item->key.keys[0], item->key.keys[1], item->key.keys[2], item->key.keys[3], item->key.keys[4], item->key.keys[5]);
-            return at_command(cmdbuf, NULL, 0, true, timeout);
-        case QTConsumer:
-            strcpy_P(fmtbuf, PSTR("AT+BLEHIDCONTROLKEY=0x%04x"));
-            snprintf(cmdbuf, sizeof(cmdbuf), fmtbuf, item->consumer);
-            return at_command(cmdbuf, NULL, 0, true, timeout);
-#ifdef MOUSE_ENABLE
-        case QTMouseMove:
-            strcpy_P(fmtbuf, PSTR("AT+BLEHIDMOUSEMOVE=%d,%d,%d,%d"));
-            snprintf(cmdbuf, sizeof(cmdbuf), fmtbuf, item->mousemove.x, item->mousemove.y, item->mousemove.scroll, item->mousemove.pan);
-            if (!at_command(cmdbuf, NULL, 0, true, timeout)) {
-                return false;
-            }
-            strcpy_P(cmdbuf, PSTR("AT+BLEHIDMOUSEBUTTON="));
-            if (item->mousemove.buttons & MOUSE_BTN1) {
-                strcat(cmdbuf, "L");
-            }
-            if (item->mousemove.buttons & MOUSE_BTN2) {
-                strcat(cmdbuf, "R");
-            }
-            if (item->mousemove.buttons & MOUSE_BTN3) {
-                strcat(cmdbuf, "M");
-            }
-            if (item->mousemove.buttons == 0) {
-                strcat(cmdbuf, "0");
-            }
-            return at_command(cmdbuf, NULL, 0, true, timeout);
-#endif
-        default:
-            return true;
-    }
-}
-void adafruit_ble_send_keys(uint8_t hid_modifier_mask, uint8_t *keys, uint8_t nkeys) {
-    struct queue_item item;
-    bool              didWait = false;
-    item.queue_type   = QTKeyReport;
-    item.key.modifier = hid_modifier_mask;
-    item.added        = timer_read();
-    while (nkeys >= 0) {
-        item.key.keys[0] = keys[0];
-        item.key.keys[1] = nkeys >= 1 ? keys[1] : 0;
-        item.key.keys[2] = nkeys >= 2 ? keys[2] : 0;
-        item.key.keys[3] = nkeys >= 3 ? keys[3] : 0;
-        item.key.keys[4] = nkeys >= 4 ? keys[4] : 0;
-        item.key.keys[5] = nkeys >= 5 ? keys[5] : 0;
-        if (!send_buf.enqueue(item)) {
-            if (!didWait) {
-                dprint("wait for buf space\n");
-                didWait = true;
-            }
-            send_buf_send_one();
-            continue;
-        }
-        if (nkeys <= 6) {
-            return;
-        }
-        nkeys -= 6;
-        keys += 6;
-    }
-}
-void adafruit_ble_send_consumer_key(uint16_t usage) {
-    struct queue_item item;
-    item.queue_type = QTConsumer;
-    item.consumer   = usage;
-    while (!send_buf.enqueue(item)) {
-        send_buf_send_one();
-    }
-}
-#ifdef MOUSE_ENABLE
-void adafruit_ble_send_mouse_move(int8_t x, int8_t y, int8_t scroll, int8_t pan, uint8_t buttons) {
-    struct queue_item item;
-    item.queue_type        = QTMouseMove;
-    item.mousemove.x       = x;
-    item.mousemove.y       = y;
-    item.mousemove.scroll  = scroll;
-    item.mousemove.pan     = pan;
-    item.mousemove.buttons = buttons;
-    while (!send_buf.enqueue(item)) {
-        send_buf_send_one();
-    }
-}
-#endif
-uint32_t adafruit_ble_read_battery_voltage(void) { return state.vbat; }
-bool adafruit_ble_set_mode_leds(bool on) {
-    if (!state.configured) {
-        return false;
-    }
-    // The "mode" led is the red blinky one
-    at_command_P(on ? PSTR("AT+HWMODELED=1") : PSTR("AT+HWMODELED=0"), NULL, 0);
-    // Pin 19 is the blue "connected" LED; turn that off too.
-    // When turning LEDs back on, don't turn that LED on if we're
-    // not connected, as that would be confusing.
-    at_command_P(on && state.is_connected ? PSTR("AT+HWGPIO=19,1") : PSTR("AT+HWGPIO=19,0"), NULL, 0);
-    return true;
-}
-// https://learn.adafruit.com/adafruit-feather-32u4-bluefruit-le/ble-generic#at-plus-blepowerlevel
-bool adafruit_ble_set_power_level(int8_t level) {
-    char cmd[46];
-    if (!state.configured) {
-        return false;
-    }
-    snprintf(cmd, sizeof(cmd), "AT+BLEPOWERLEVEL=%d", level);
-    return at_command(cmd, NULL, 0, false);
-}
diff --git a/tmk_core/protocol/lufa/adafruit_ble.h b/tmk_core/protocol/lufa/adafruit_ble.h
deleted file mode 100644
index b43e0771d..000000000
--- a/tmk_core/protocol/lufa/adafruit_ble.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/* Bluetooth Low Energy Protocol for QMK.
- * Author: Wez Furlong, 2016
- * Supports the Adafruit BLE board built around the nRF51822 chip.
- */
-#pragma once
-#include <stdbool.h>
-#include <stdint.h>
-#include <string.h>
-#include "config_common.h"
-#ifdef __cplusplus
-extern "C" {
-#endif
-/* Instruct the module to enable HID keyboard support and reset */
-extern bool adafruit_ble_enable_keyboard(void);
-/* Query to see if the BLE module is connected */
-extern bool adafruit_ble_query_is_connected(void);
-/* Returns true if we believe that the BLE module is connected.
- * This uses our cached understanding that is maintained by
- * calling ble_task() periodically. */
-extern bool adafruit_ble_is_connected(void);
-/* Call this periodically to process BLE-originated things */
-extern void adafruit_ble_task(void);
-/* Generates keypress events for a set of keys.
- * The hid modifier mask specifies the state of the modifier keys for
- * this set of keys.
- * Also sends a key release indicator, so that the keys do not remain
- * held down. */
-extern void adafruit_ble_send_keys(uint8_t hid_modifier_mask, uint8_t *keys, uint8_t nkeys);
-/* Send a consumer usage.
- * (milliseconds) */
-extern void adafruit_ble_send_consumer_key(uint16_t usage);
-#ifdef MOUSE_ENABLE
-/* Send a mouse/wheel movement report.
- * The parameters are signed and indicate positive or negative direction
- * change. */
-extern void adafruit_ble_send_mouse_move(int8_t x, int8_t y, int8_t scroll, int8_t pan, uint8_t buttons);
-#endif
-/* Compute battery voltage by reading an analog pin.
- * Returns the integer number of millivolts */
-extern uint32_t adafruit_ble_read_battery_voltage(void);
-extern bool adafruit_ble_set_mode_leds(bool on);
-extern bool adafruit_ble_set_power_level(int8_t level);
-#ifdef __cplusplus
-}
-#endif
diff --git a/tmk_core/protocol/lufa/lufa.c b/tmk_core/protocol/lufa/lufa.c
index 5b56e8a03..753762358 100644
--- a/tmk_core/protocol/lufa/lufa.c
+++ b/tmk_core/protocol/lufa/lufa.c
@@ -52,6 +52,7 @@
 #include "usb_descriptor.h"
 #include "lufa.h"
 #include "quantum.h"
+#include "usb_device_state.h"
 #include <util/atomic.h>
 #ifdef NKRO_ENABLE
@@ -142,7 +143,8 @@ static void    send_keyboard(report_keyboard_t *report);
 static void    send_mouse(report_mouse_t *report);
 static void    send_system(uint16_t data);
 static void    send_consumer(uint16_t data);
-host_driver_t  lufa_driver = {keyboard_leds, send_keyboard, send_mouse, send_system, send_consumer};
+static void    send_programmable_button(uint32_t data);
+host_driver_t  lufa_driver = {keyboard_leds, send_keyboard, send_mouse, send_system, send_consumer, send_programmable_button};
 #ifdef VIRTSER_ENABLE
 // clang-format off
@@ -413,7 +415,10 @@ void EVENT_USB_Device_Disconnect(void) {
 *
 * FIXME: Needs doc
 */
-void EVENT_USB_Device_Reset(void) { print("[R]"); }
+void EVENT_USB_Device_Reset(void) {
+    print("[R]");
+    usb_device_state_set_reset();
+}
 /** \brief Event USB Device Connect
 *
@@ -421,6 +426,8 @@ void EVENT_USB_Device_Reset(void) { print("[R]"); }
 */
 void EVENT_USB_Device_Suspend() {
    print("[S]");
+    usb_device_state_set_suspend(USB_Device_ConfigurationNumber != 0, USB_Device_ConfigurationNumber);
 #ifdef SLEEP_LED_ENABLE
    sleep_led_enable();
 #endif
@@ -436,6 +443,8 @@ void EVENT_USB_Device_WakeUp() {
    suspend_wakeup_init();
 #endif
+    usb_device_state_set_resume(USB_DeviceState == DEVICE_STATE_Configured, USB_Device_ConfigurationNumber);
 #ifdef SLEEP_LED_ENABLE
    sleep_led_disable();
    // NOTE: converters may not accept this
@@ -528,6 +537,8 @@ void EVENT_USB_Device_ConfigurationChanged(void) {
    /* Setup digitizer endpoint */
    ConfigSuccess &= Endpoint_ConfigureEndpoint((DIGITIZER_IN_EPNUM | ENDPOINT_DIR_IN), EP_TYPE_INTERRUPT, DIGITIZER_EPSIZE, 1);
 #endif
+    usb_device_state_set_configuration(USB_DeviceState == DEVICE_STATE_Configured, USB_Device_ConfigurationNumber);
 }
 /* FIXME: Expose this table in the docs somehow
@@ -760,29 +771,35 @@ static void send_mouse(report_mouse_t *report) {
 #endif
 }
-/** \brief Send Extra
+#if defined(EXTRAKEY_ENABLE) || defined(PROGRAMMABLE_BUTTON_ENABLE)
- *
+static void send_report(void *report, size_t size) {
- * FIXME: Needs doc
- */
-#ifdef EXTRAKEY_ENABLE
-static void send_extra(uint8_t report_id, uint16_t data) {
    uint8_t timeout = 255;
    if (USB_DeviceState != DEVICE_STATE_Configured) return;
-    static report_extra_t r;
-    r = (report_extra_t){.report_id = report_id, .usage = data};
    Endpoint_SelectEndpoint(SHARED_IN_EPNUM);
    /* Check if write ready for a polling interval around 10ms */
    while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
    if (!Endpoint_IsReadWriteAllowed()) return;
-    Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
+    Endpoint_Write_Stream_LE(report, size, NULL);
    Endpoint_ClearIN();
 }
 #endif
+/** \brief Send Extra
+ *
+ * FIXME: Needs doc
+ */
+#ifdef EXTRAKEY_ENABLE
+static void send_extra(uint8_t report_id, uint16_t data) {
+    static report_extra_t r;
+    r = (report_extra_t){.report_id = report_id, .usage = data};
+    send_report(&r, sizeof(r));
+}
+#endif
 /** \brief Send System
 *
 * FIXME: Needs doc
@@ -822,6 +839,14 @@ static void send_consumer(uint16_t data) {
 #endif
 }
+static void send_programmable_button(uint32_t data) {
+#ifdef PROGRAMMABLE_BUTTON_ENABLE
+    static report_programmable_button_t r;
+    r = (report_programmable_button_t){.report_id = REPORT_ID_PROGRAMMABLE_BUTTON, .usage = data};
+    send_report(&r, sizeof(r));
+#endif
+}
 /*******************************************************************************
 * sendchar
 ******************************************************************************/
@@ -1044,6 +1069,7 @@ void protocol_setup(void) {
 #endif
    setup_mcu();
+    usb_device_state_init();
    keyboard_setup();
 }
diff --git a/tmk_core/protocol/lufa/lufa.h b/tmk_core/protocol/lufa/lufa.h
index 348a84c03..6a5205609 100644
--- a/tmk_core/protocol/lufa/lufa.h
+++ b/tmk_core/protocol/lufa/lufa.h
@@ -56,14 +56,3 @@ extern host_driver_t lufa_driver;
 #ifdef __cplusplus
 }
 #endif
-#ifdef API_ENABLE
-#    include "api.h"
-#endif
-#ifdef API_SYSEX_ENABLE
-#    include "api_sysex.h"
-// Allocate space for encoding overhead.
-// The header and terminator are not stored to save a few bytes of precious ram
-#    define MIDI_SYSEX_BUFFER (API_SYSEX_MAX_SIZE + API_SYSEX_MAX_SIZE / 7 + (API_SYSEX_MAX_SIZE % 7 ? 1 : 0))
-#endif
diff --git a/tmk_core/protocol/lufa/outputselect.c b/tmk_core/protocol/lufa/outputselect.c
deleted file mode 100644
index f758c6528..000000000
--- a/tmk_core/protocol/lufa/outputselect.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
-Copyright 2017 Priyadi Iman Nurcahyo
-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 "outputselect.h"
-#if defined(PROTOCOL_LUFA)
-#    include "lufa.h"
-#endif
-#ifdef MODULE_ADAFRUIT_BLE
-#    include "adafruit_ble.h"
-#endif
-uint8_t desired_output = OUTPUT_DEFAULT;
-/** \brief Set Output
- *
- * FIXME: Needs doc
- */
-void set_output(uint8_t output) {
-    set_output_user(output);
-    desired_output = output;
-}
-/** \brief Set Output User
- *
- * FIXME: Needs doc
- */
-__attribute__((weak)) void set_output_user(uint8_t output) {}
-static bool is_usb_configured(void) {
-#if defined(PROTOCOL_LUFA)
-    return USB_DeviceState == DEVICE_STATE_Configured;
-#endif
-}
-/** \brief Auto Detect Output
- *
- * FIXME: Needs doc
- */
-uint8_t auto_detect_output(void) {
-    if (is_usb_configured()) {
-        return OUTPUT_USB;
-    }
-#ifdef MODULE_ADAFRUIT_BLE
-    if (adafruit_ble_is_connected()) {
-        return OUTPUT_BLUETOOTH;
-    }
-#endif
-#ifdef BLUETOOTH_ENABLE
-    return OUTPUT_BLUETOOTH;  // should check if BT is connected here
-#endif
-    return OUTPUT_NONE;
-}
-/** \brief Where To Send
- *
- * FIXME: Needs doc
- */
-uint8_t where_to_send(void) {
-    if (desired_output == OUTPUT_AUTO) {
-        return auto_detect_output();
-    }
-    return desired_output;
-}
diff --git a/tmk_core/protocol/lufa/outputselect.h b/tmk_core/protocol/lufa/outputselect.h
deleted file mode 100644
index c4548e112..000000000
--- a/tmk_core/protocol/lufa/outputselect.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
-Copyright 2017 Priyadi Iman Nurcahyo
-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/>.
-*/
-#pragma once
-#include <stdint.h>
-enum outputs {
-    OUTPUT_AUTO,
-    OUTPUT_NONE,
-    OUTPUT_USB,
-    OUTPUT_BLUETOOTH
-};
-#ifndef OUTPUT_DEFAULT
-#    define OUTPUT_DEFAULT OUTPUT_AUTO
-#endif
-void    set_output(uint8_t output);
-void    set_output_user(uint8_t output);
-uint8_t auto_detect_output(void);
-uint8_t where_to_send(void);
diff --git a/tmk_core/protocol/lufa/ringbuffer.hpp b/tmk_core/protocol/lufa/ringbuffer.hpp
deleted file mode 100644
index 70a3c4881..000000000
--- a/tmk_core/protocol/lufa/ringbuffer.hpp
+++ /dev/null
@@ -1,66 +0,0 @@
-#pragma once
-// A simple ringbuffer holding Size elements of type T
-template <typename T, uint8_t Size>
-class RingBuffer {
- protected:
-  T buf_[Size];
-  uint8_t head_{0}, tail_{0};
- public:
-  inline uint8_t nextPosition(uint8_t position) {
-    return (position + 1) % Size;
-  }
-  inline uint8_t prevPosition(uint8_t position) {
-    if (position == 0) {
-      return Size - 1;
-    }
-    return position - 1;
-  }
-  inline bool enqueue(const T &item) {
-    static_assert(Size > 1, "RingBuffer size must be > 1");
-    uint8_t next = nextPosition(head_);
-    if (next == tail_) {
-      // Full
-      return false;
-    }
-    buf_[head_] = item;
-    head_ = next;
-    return true;
-  }
-  inline bool get(T &dest, bool commit = true) {
-    auto tail = tail_;
-    if (tail == head_) {
-      // No more data
-      return false;
-    }
-    dest = buf_[tail];
-    tail = nextPosition(tail);
-    if (commit) {
-      tail_ = tail;
-    }
-    return true;
-  }
-  inline bool empty() const { return head_ == tail_; }
-  inline uint8_t size() const {
-    int diff = head_ - tail_;
-    if (diff >= 0) {
-      return diff;
-    }
-    return Size + diff;
-  }
-  inline T& front() {
-    return buf_[tail_];
-  }
-  inline bool peek(T &item) {
-    return get(item, false);
-  }
-};
diff --git a/tmk_core/protocol/midi/qmk_midi.c b/tmk_core/protocol/midi/qmk_midi.c
index c18dbf993..3a454d61a 100644
--- a/tmk_core/protocol/midi/qmk_midi.c
+++ b/tmk_core/protocol/midi/qmk_midi.c
@@ -4,9 +4,6 @@
 #include "midi.h"
 #include "usb_descriptor.h"
 #include "process_midi.h"
-#if API_SYSEX_ENABLE
-#    include "api_sysex.h"
-#endif
 /*******************************************************************************
 * MIDI
@@ -124,41 +121,6 @@ static void cc_callback(MidiDevice* device, uint8_t chan, uint8_t num, uint8_t v
    // midi_send_cc(device, (chan + 1) % 16, num, val);
 }
-#ifdef API_SYSEX_ENABLE
-uint8_t midi_buffer[MIDI_SYSEX_BUFFER] = {0};
-static void sysex_callback(MidiDevice* device, uint16_t start, uint8_t length, uint8_t* data) {
-    // SEND_STRING("\n");
-    // send_word(start);
-    // SEND_STRING(": ");
-    // Don't store the header
-    int16_t pos = start - 4;
-    for (uint8_t place = 0; place < length; place++) {
-        // send_byte(*data);
-        if (pos >= 0) {
-            if (*data == 0xF7) {
-                // SEND_STRING("\nRD: ");
-                // for (uint8_t i = 0; i < start + place + 1; i++){
-                //     send_byte(midi_buffer[i]);
-                // SEND_STRING(" ");
-                // }
-                const unsigned decoded_length = sysex_decoded_length(pos);
-                uint8_t        decoded[API_SYSEX_MAX_SIZE];
-                sysex_decode(decoded, midi_buffer, pos);
-                process_api(decoded_length, decoded);
-                return;
-            } else if (pos >= MIDI_SYSEX_BUFFER) {
-                return;
-            }
-            midi_buffer[pos] = *data;
-        }
-        // SEND_STRING(" ");
-        data++;
-        pos++;
-    }
-}
-#endif
 void midi_init(void);
 void setup_midi(void) {
@@ -170,7 +132,4 @@ void setup_midi(void) {
    midi_device_set_pre_input_process_func(&midi_device, usb_get_midi);
    midi_register_fallthrough_callback(&midi_device, fallthrough_callback);
    midi_register_cc_callback(&midi_device, cc_callback);
-#ifdef API_SYSEX_ENABLE
-    midi_register_sysex_callback(&midi_device, sysex_callback);
-#endif
 }
diff --git a/tmk_core/protocol/news.c b/tmk_core/protocol/news.c
deleted file mode 100644
index 4463e8dd4..000000000
--- a/tmk_core/protocol/news.c
+++ /dev/null
@@ -1,161 +0,0 @@
-/*
-Copyright 2012 Jun WAKO <wakojun@gmail.com>
-This software is licensed with a Modified BSD License.
-All of this is supposed to be Free Software, Open Source, DFSG-free,
-GPL-compatible, and OK to use in both free and proprietary applications.
-Additions and corrections to this file are welcome.
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-* Redistributions of source code must retain the above copyright
-  notice, this list of conditions and the following disclaimer.
-* Redistributions in binary form must reproduce the above copyright
-  notice, this list of conditions and the following disclaimer in
-  the documentation and/or other materials provided with the
-  distribution.
-* Neither the name of the copyright holders nor the names of
-  contributors may be used to endorse or promote products derived
-  from this software without specific prior written permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
-*/
-#include <stdbool.h>
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include "news.h"
-void news_init(void) { NEWS_KBD_RX_INIT(); }
-// RX ring buffer
-#define RBUF_SIZE 8
-static uint8_t rbuf[RBUF_SIZE];
-static uint8_t rbuf_head = 0;
-static uint8_t rbuf_tail = 0;
-uint8_t news_recv(void) {
-    uint8_t data = 0;
-    if (rbuf_head == rbuf_tail) {
-        return 0;
-    }
-    data      = rbuf[rbuf_tail];
-    rbuf_tail = (rbuf_tail + 1) % RBUF_SIZE;
-    return data;
-}
-// USART RX complete interrupt
-ISR(NEWS_KBD_RX_VECT) {
-    uint8_t next = (rbuf_head + 1) % RBUF_SIZE;
-    if (next != rbuf_tail) {
-        rbuf[rbuf_head] = NEWS_KBD_RX_DATA;
-        rbuf_head       = next;
-    }
-}
-/*
-SONY NEWS Keyboard Protocol
-===========================
-Resources
---------
-    Mouse protocol of NWA-5461(Japanese)
-    http://groups.google.com/group/fj.sys.news/browse_thread/thread/a01b3e3ac6ae5b2d
-    SONY NEWS Info(Japanese)
-    http://katsu.watanabe.name/doc/sonynews/
-Pinouts
-------
-    EIA 232 male connector from NWP-5461
-    -------------
-    \ 1 2 3 4 5 /
-     \ 6 7 8 9 /
-      ---------
-    1 VCC
-    2 BZ(Speaker)
-    3 Keyboard Data(from keyboard MCU TxD)
-    4 NC
-    5 GND
-    6 Unknown Input(to keyboard MCU RxD via schmitt trigger)
-    7 Mouse Data(from Mouse Ext connector)
-    8 Unknown Input(to Keyboard MCU Input via diode and buffer)
-    9 FG
-    NOTE: Two LED on keyboard are controlled by pin 6,8?
-    EIA 232 male connector from NWP-411A
-    -------------
-    \ 1 2 3 4 5 /
-     \ 6 7 8 9 /
-      ---------
-    1 VCC
-    2 BZ(Speaker)
-    3 Keyboard Data(from keyboard MCU TxD)
-    4 NC
-    5 GND
-    6 NC
-    7 Mouse Data(from Mouse Ext connector)
-    8 NC
-    9 FG
-    NOTE: These are just from my guess and not confirmed.
-Signaling
---------
-    ~~~~~~~~~~ ____XOO0X111X222X333X444X555X666X777~~~~ ~~~~~~~
-    Idle    Start  LSB                         MSB Stop Idle
-    Idle:       High
-    Start bit:  Low
-    Stop bit:   High
-    Bit order:  LSB first
-    Baud rate:  9600
-    Interface:  TTL level(5V) UART
-    NOTE: This is observed on NWP-5461 with its DIP switch all OFF.
-Format
------
-    MSB         LSB
-    7 6 5 4 3 2 1 0   bit
-    | | | | | | | |
-    | +-+-+-+-+-+-+-- scan code(00-7F)
-    +---------------- break flag: sets when released
-Scan Codes
----------
-    SONY NEWS NWP-5461
-    ,---.   ,------------------------, ,------------------------. ,---------.
-    | 7A|   | 01 | 02 | 03 | 04 | 05 | | 06 | 07 | 08 | 09 | 0A | | 68 | 69 | ,-----------.
-    `---'   `------------------------' `------------------------' `---------' | 64| 65| 52|
-    ,-------------------------------------------------------------. ,---. ,---------------|
-    | 0B| 0C| 0D| 0E| 0F| 10| 11| 12| 13| 14| 15| 16| 17| 18|  19 | | 6A| | 4B| 4C| 4D| 4E|
-    |-------------------------------------------------------------| |---| |---------------|
-    |  1A | 1B| 1C| 1D| 1E| 1F| 20| 21| 22| 23| 24| 25| 26| 27|   | | 6B| | 4F| 50| 51| 56|
-    |---------------------------------------------------------'   | |---| |---------------|
-    |  28  | 29| 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 34|  35  | | 6C| | 53| 54| 55|   |
-    |-------------------------------------------------------------| |---| |-----------| 5A|
-    |  36    | 37| 38| 39| 3A| 3B| 3C| 3D| 3E| 3F| 40| 41|   42   | | 6D| | 57| 59| 58|   |
-    |-------------------------------------------------------------| |---| |---------------|
-    | 43  | 44 | 45 |       46          |    47    | 48| 49|  4A  | | 6E| | 66| 5B| 5C| 5D|
-    `-------------------------------------------------------------' `---' `---------------'
-*/
diff --git a/tmk_core/protocol/news.h b/tmk_core/protocol/news.h
deleted file mode 100644
index 327a13856..000000000
--- a/tmk_core/protocol/news.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
-Copyright 2012 Jun WAKO <wakojun@gmail.com>
-This software is licensed with a Modified BSD License.
-All of this is supposed to be Free Software, Open Source, DFSG-free,
-GPL-compatible, and OK to use in both free and proprietary applications.
-Additions and corrections to this file are welcome.
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-* Redistributions of source code must retain the above copyright
-  notice, this list of conditions and the following disclaimer.
-* Redistributions in binary form must reproduce the above copyright
-  notice, this list of conditions and the following disclaimer in
-  the documentation and/or other materials provided with the
-  distribution.
-* Neither the name of the copyright holders nor the names of
-  contributors may be used to endorse or promote products derived
-  from this software without specific prior written permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
-*/
-#pragma once
-/*
- * Primitive PS/2 Library for AVR
- */
-/* host role */
-void    news_init(void);
-uint8_t news_recv(void);
-/* device role */
diff --git a/tmk_core/protocol/next_kbd.c b/tmk_core/protocol/next_kbd.c
deleted file mode 100644
index 6f118e617..000000000
--- a/tmk_core/protocol/next_kbd.c
+++ /dev/null
@@ -1,219 +0,0 @@
-/*
-NeXT non-ADB Keyboard Protocol
-Copyright 2013, Benjamin Gould (bgould@github.com)
-Based on:
-TMK firmware code Copyright 2011,2012 Jun WAKO <wakojun@gmail.com>
-Arduino code by "Ladyada" Limor Fried (http://ladyada.net/, http://adafruit.com/), released under BSD license
-Timing reference thanks to http://m0115.web.fc2.com/ (dead link), http://cfile7.uf.tistory.com/image/14448E464F410BF22380BB
-Pinouts thanks to http://www.68k.org/~degs/nextkeyboard.html
-Keycodes from http://ftp.netbsd.org/pub/NetBSD/NetBSD-release-6/src/sys/arch/next68k/dev/
-This software is licensed with a Modified BSD License.
-All of this is supposed to be Free Software, Open Source, DFSG-free,
-GPL-compatible, and OK to use in both free and proprietary applications.
-Additions and corrections to this file are welcome.
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-* Redistributions of source code must retain the above copyright
-  notice, this list of conditions and the following disclaimer.
-* Redistributions in binary form must reproduce the above copyright
-  notice, this list of conditions and the following disclaimer in
-  the documentation and/or other materials provided with the
-  distribution.
-* Neither the name of the copyright holders nor the names of
-  contributors may be used to endorse or promote products derived
-  from this software without specific prior written permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
-*/
-#include <stdint.h>
-#include <stdbool.h>
-#include <util/atomic.h>
-#include <util/delay.h>
-#include "next_kbd.h"
-#include "debug.h"
-static inline void     out_lo(void);
-static inline void     out_hi(void);
-static inline void     query(void);
-static inline void     reset(void);
-static inline uint32_t response(void);
-/* The keyboard sends signal with 50us pulse width on OUT line
- * while it seems to miss the 50us pulse on In line.
- * next_kbd_set_leds() often fails to sync LED status with 50us
- * but it works well with 51us(+1us) on TMK converter(ATMeaga32u2) at least.
- * TODO: test on Teensy and Pro Micro configuration
- */
-#define out_hi_delay(intervals)                       \
-    do {                                              \
-        out_hi();                                     \
-        _delay_us((NEXT_KBD_TIMING + 1) * intervals); \
-    } while (0);
-#define out_lo_delay(intervals)                       \
-    do {                                              \
-        out_lo();                                     \
-        _delay_us((NEXT_KBD_TIMING + 1) * intervals); \
-    } while (0);
-#define query_delay(intervals)                        \
-    do {                                              \
-        query();                                      \
-        _delay_us((NEXT_KBD_TIMING + 1) * intervals); \
-    } while (0);
-#define reset_delay(intervals)                        \
-    do {                                              \
-        reset();                                      \
-        _delay_us((NEXT_KBD_TIMING + 1) * intervals); \
-    } while (0);
-void next_kbd_init(void) {
-    out_hi();
-    NEXT_KBD_IN_DDR &= ~(1 << NEXT_KBD_IN_BIT);  // KBD_IN  to input
-    NEXT_KBD_IN_PORT |= (1 << NEXT_KBD_IN_BIT);  // KBD_IN  pull up
-    query_delay(5);
-    reset_delay(8);
-    query_delay(5);
-    reset_delay(8);
-}
-void next_kbd_set_leds(bool left, bool right) {
-    cli();
-    out_lo_delay(9);
-    out_hi_delay(3);
-    out_lo_delay(1);
-    if (left) {
-        out_hi_delay(1);
-    } else {
-        out_lo_delay(1);
-    }
-    if (right) {
-        out_hi_delay(1);
-    } else {
-        out_lo_delay(1);
-    }
-    out_lo_delay(7);
-    out_hi();
-    sei();
-}
-#define NEXT_KBD_READ (NEXT_KBD_IN_PIN & (1 << NEXT_KBD_IN_BIT))
-uint32_t next_kbd_recv(void) {
-    // First check to make sure that the keyboard is actually connected;
-    // if not, just return
-    // TODO: reflect the status of the keyboard in a return code
-    if (!NEXT_KBD_READ) {
-        sei();
-        return 0;
-    }
-    query();
-    uint32_t resp = response();
-    return resp;
-}
-static inline uint32_t response(void) {
-    cli();
-    // try a 5ms read; this should be called after the query method has
-    // been run so if a key is pressed we should get a response within
-    // 5ms; if not then send a reset and exit
-    uint8_t  i             = 0;
-    uint32_t data          = 0;
-    uint16_t reset_timeout = 50000;
-    while (NEXT_KBD_READ && reset_timeout) {
-        asm("");
-        _delay_us(1);
-        reset_timeout--;
-    }
-    if (!reset_timeout) {
-        reset();
-        sei();
-        return 0;
-    }
-    _delay_us(NEXT_KBD_TIMING / 2);
-    for (; i < 22; i++) {
-        if (NEXT_KBD_READ) {
-            data |= ((uint32_t)1 << i);
-            /* Note:
-             * My testing with the ATmega32u4 showed that there might
-             * something wrong with the timing here; by the end of the
-             * second data byte some of the modifiers can get bumped out
-             * to the next bit over if we just cycle through the data
-             * based on the expected interval.  There is a bit (i = 10)
-             * in the middle of the data that is always on followed by
-             * one that is always off - so we'll use that to reset our
-             * timing in case we've gotten ahead of the keyboard;
-             */
-            if (i == 10) {
-                i++;
-                while (NEXT_KBD_READ)
-                    ;
-                _delay_us(NEXT_KBD_TIMING / 2);
-            }
-        } else {
-            /* redundant - but I don't want to remove if it might screw
-             * up the timing
-             */
-            data |= ((uint32_t)0 << i);
-        }
-        _delay_us(NEXT_KBD_TIMING);
-    }
-    sei();
-    return data;
-}
-static inline void out_lo(void) {
-    NEXT_KBD_OUT_PORT &= ~(1 << NEXT_KBD_OUT_BIT);
-    NEXT_KBD_OUT_DDR |= (1 << NEXT_KBD_OUT_BIT);
-}
-static inline void out_hi(void) {
-    /* input with pull up */
-    NEXT_KBD_OUT_DDR &= ~(1 << NEXT_KBD_OUT_BIT);
-    NEXT_KBD_OUT_PORT |= (1 << NEXT_KBD_OUT_BIT);
-}
-static inline void query(void) {
-    out_lo_delay(5);
-    out_hi_delay(1);
-    out_lo_delay(3);
-    out_hi();
-}
-static inline void reset(void) {
-    out_lo_delay(1);
-    out_hi_delay(4);
-    out_lo_delay(1);
-    out_hi_delay(6);
-    out_lo_delay(10);
-    out_hi();
-}
diff --git a/tmk_core/protocol/next_kbd.h b/tmk_core/protocol/next_kbd.h
deleted file mode 100644
index 1249ebf39..000000000
--- a/tmk_core/protocol/next_kbd.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
-NeXT non-ADB Keyboard Protocol
-Copyright 2013, Benjamin Gould (bgould@github.com)
-Based on:
-TMK firmware code Copyright 2011,2012 Jun WAKO <wakojun@gmail.com>
-Arduino code by "Ladyada" Limor Fried (http://ladyada.net/, http://adafruit.com/), released under BSD license
-Timing reference thanks to http://m0115.web.fc2.com/ (dead link), http://cfile7.uf.tistory.com/image/14448E464F410BF22380BB
-Pinouts thanks to http://www.68k.org/~degs/nextkeyboard.html
-Keycodes from http://ftp.netbsd.org/pub/NetBSD/NetBSD-release-6/src/sys/arch/next68k/dev/
-This software is licensed with a Modified BSD License.
-All of this is supposed to be Free Software, Open Source, DFSG-free,
-GPL-compatible, and OK to use in both free and proprietary applications.
-Additions and corrections to this file are welcome.
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-* Redistributions of source code must retain the above copyright
-  notice, this list of conditions and the following disclaimer.
-* Redistributions in binary form must reproduce the above copyright
-  notice, this list of conditions and the following disclaimer in
-  the documentation and/or other materials provided with the
-  distribution.
-* Neither the name of the copyright holders nor the names of
-  contributors may be used to endorse or promote products derived
-  from this software without specific prior written permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
-*/
-#pragma once
-#include <stdbool.h>
-#define NEXT_KBD_KMBUS_IDLE 0x300600
-#define NEXT_KBD_TIMING 50
-extern uint8_t next_kbd_error;
-/* host role */
-void     next_kbd_init(void);
-void     next_kbd_set_leds(bool left, bool right);
-uint32_t next_kbd_recv(void);
diff --git a/tmk_core/protocol/usb_descriptor.c b/tmk_core/protocol/usb_descriptor.c
index 099964ae5..a43755f89 100644
--- a/tmk_core/protocol/usb_descriptor.c
+++ b/tmk_core/protocol/usb_descriptor.c
@@ -237,6 +237,25 @@ const USB_Descriptor_HIDReport_Datatype_t PROGMEM SharedReport[] = {
    HID_RI_END_COLLECTION(0),
 #endif
+#ifdef PROGRAMMABLE_BUTTON_ENABLE
+    HID_RI_USAGE_PAGE(8, 0x0C),            // Consumer
+    HID_RI_USAGE(8, 0x01),                 // Consumer Control
+    HID_RI_COLLECTION(8, 0x01),            // Application
+        HID_RI_REPORT_ID(8, REPORT_ID_PROGRAMMABLE_BUTTON),
+        HID_RI_USAGE(8, 0x03),             // Programmable Buttons
+        HID_RI_COLLECTION(8, 0x04),        // Named Array
+            HID_RI_USAGE_PAGE(8, 0x09),    // Button
+            HID_RI_USAGE_MINIMUM(8, 0x01), // Button 1
+            HID_RI_USAGE_MAXIMUM(8, 0x20), // Button 32
+            HID_RI_LOGICAL_MINIMUM(8, 0x00),
+            HID_RI_LOGICAL_MAXIMUM(8, 0x01),
+            HID_RI_REPORT_COUNT(8, 32),
+            HID_RI_REPORT_SIZE(8, 1),
+            HID_RI_INPUT(8, HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
+        HID_RI_END_COLLECTION(0),
+    HID_RI_END_COLLECTION(0),
+#endif
 #ifdef NKRO_ENABLE
    HID_RI_USAGE_PAGE(8, 0x01),        // Generic Desktop
    HID_RI_USAGE(8, 0x06),             // Keyboard
diff --git a/tmk_core/protocol/usb_hid/parser.h b/tmk_core/protocol/usb_hid/parser.h
index 036281fa6..ba35b7af5 100644
--- a/tmk_core/protocol/usb_hid/parser.h
+++ b/tmk_core/protocol/usb_hid/parser.h
@@ -1,5 +1,4 @@
-#ifndef PARSER_H
+#pragma once
-#define PARSER_H
 #include "hid.h"
 #include "report.h"
@@ -11,5 +10,3 @@ public:
    uint16_t time_stamp;
    virtual void Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf);
 };
-#endif
diff --git a/tmk_core/protocol/usb_hid/usb_hid.h b/tmk_core/protocol/usb_hid/usb_hid.h
index 083b68d1f..5cb5f5d03 100644
--- a/tmk_core/protocol/usb_hid/usb_hid.h
+++ b/tmk_core/protocol/usb_hid/usb_hid.h
@@ -1,10 +1,6 @@
-#ifndef USB_HID_H
+#pragma once
-#define USB_HID_H
 #include "report.h"
 extern report_keyboard_t usb_hid_keyboard_report;
 extern uint16_t usb_hid_time_stamp;
-#endif
diff --git a/tmk_core/protocol/vusb/vusb.c b/tmk_core/protocol/vusb/vusb.c
index 485b20c90..e4db5d065 100644
--- a/tmk_core/protocol/vusb/vusb.c
+++ b/tmk_core/protocol/vusb/vusb.c
@@ -226,8 +226,9 @@ static void    send_keyboard(report_keyboard_t *report);
 static void    send_mouse(report_mouse_t *report);
 static void    send_system(uint16_t data);
 static void    send_consumer(uint16_t data);
+static void    send_programmable_button(uint32_t data);
-static host_driver_t driver = {keyboard_leds, send_keyboard, send_mouse, send_system, send_consumer};
+static host_driver_t driver = {keyboard_leds, send_keyboard, send_mouse, send_system, send_consumer, send_programmable_button};
 host_driver_t *vusb_driver(void) { return &driver; }
@@ -296,6 +297,19 @@ void send_digitizer(report_digitizer_t *report) {
 #ifdef DIGITIZER_ENABLE
    if (usbInterruptIsReadyShared()) {
        usbSetInterruptShared((void *)report, sizeof(report_digitizer_t));
+#endif
+}
+static void send_programmable_button(uint32_t data) {
+#ifdef PROGRAMMABLE_BUTTON_ENABLE
+    static report_programmable_button_t report = {
+        .report_id = REPORT_ID_PROGRAMMABLE_BUTTON,
+    };
+    report.usage = data;
+    if (usbInterruptIsReadyShared()) {
+        usbSetInterruptShared((void *)&report, sizeof(report));
    }
 #endif
 }
@@ -558,6 +572,26 @@ const PROGMEM uchar shared_hid_report[] = {
    0xC0               // End Collection
 #endif
+#ifdef PROGRAMMABLE_BUTTON_ENABLE
+    // Programmable buttons report descriptor
+    0x05, 0x0C,                           // Usage Page (Consumer)
+    0x09, 0x01,                           // Usage (Consumer Control)
+    0xA1, 0x01,                           // Collection (Application)
+    0x85, REPORT_ID_PROGRAMMABLE_BUTTON,  //   Report ID
+    0x09, 0x03,                           //   Usage (Programmable Buttons)
+    0xA1, 0x04,                           //   Collection (Named Array)
+    0x05, 0x09,                           //     Usage Page (Button)
+    0x19, 0x01,                           //     Usage Minimum (Button 1)
+    0x29, 0x20,                           //     Usage Maximum (Button 32)
+    0x15, 0x00,                           //     Logical Minimum (0)
+    0x25, 0x01,                           //     Logical Maximum (1)
+    0x95, 0x20,                           //     Report Count (32)
+    0x75, 0x01,                           //     Report Size (1)
+    0x81, 0x02,                           //     Input (Data, Variable, Absolute)
+    0xC0,                                 //   End Collection
+    0xC0                                  // End Collection
+#endif
 #ifdef SHARED_EP_ENABLE
 };
 #endif