Merge remote-tracking branch 'upstream/master'

18 files changed, 1815 insertions, 0 deletions

diff --git a/keyboard/infinity/Makefile b/keyboard/infinity/Makefile
new file mode 100644
index 0000000000..e33c239afb
--- /dev/null
+++ b/keyboard/infinity/Makefile
@@ -0,0 +1,42 @@
+PROJECT = infinity
+
+TMK_DIR = ../..
+MBED_DIR = $(TMK_DIR)/mbed-sdk
+
+#VPATH += $(MBED_DIR):$(TMK_DIR)
+vpath %.s .:$(MBED_DIR):$(TMK_DIR)
+vpath %.c .:$(MBED_DIR):$(TMK_DIR)
+vpath %.cpp .:$(MBED_DIR):$(TMK_DIR)
+
+OBJDIR = ./build
+
+OBJECTS = \
+	$(OBJDIR)/matrix.o \
+	$(OBJDIR)/keymap_common.o \
+	$(OBJDIR)/led.o \
+	$(OBJDIR)/main.o
+
+ifdef KEYMAP
+    OBJECTS := $(OBJDIR)/keymap_$(KEYMAP).o $(OBJECTS)
+else
+    OBJECTS := $(OBJDIR)/keymap.o $(OBJECTS)
+endif
+
+CONFIG_H = config.h
+
+INCLUDE_PATHS = -I.
+
+
+# Build Options
+#   Comment out to disable
+#BOOTMAGIC_ENABLE = yes
+#MOUSEKEY_ENABLE = yes
+
+
+include mbed-infinity.mk
+include $(TMK_DIR)/tool/mbed/mbed.mk
+include $(TMK_DIR)/tool/mbed/common.mk
+include $(TMK_DIR)/tool/mbed/gcc.mk
+
+program: $(OBJDIR)/$(PROJECT).bin
+	dfu-util -D $(OBJDIR)/$(PROJECT).bin
diff --git a/keyboard/infinity/README b/keyboard/infinity/README
new file mode 100644
index 0000000000..53d1c91737
--- /dev/null
+++ b/keyboard/infinity/README
@@ -0,0 +1,81 @@
+Infinity
+========
+Massdrop Infinity Keyboard:
+https://www.massdrop.com/buy/infinity-keyboard-kit
+
+kiibohd controller(MD1):
+https://github.com/kiibohd/controller
+
+DFU bootloader:
+https://github.com/kiibohd/controller/tree/master/Bootloader
+
+Program with bootloader:
+    $ dfu-util -D kiibohd.dfu.bin
+
+Pinout:
+https://github.com/kiibohd/controller/blob/master/Scan/MD1/pinout
+
+MCHCK compatible:
+https://mchck.org/about/
+
+MCU Freescale MK20DX128VLF5 48-QFP:
+http://cache.freescale.com/files/32bit/doc/data_sheet/K20P48M50SF0.pdf
+
+
+
+Pin Usage
+=========
+Key Matrix:
+    Strobe(output high):            PTB0 PTB1 PTB2 PTB3 PTB16 PTB17 PTC4 PTC5 PTD0
+    Sense(input with pull-down):    PTD1 PTD2 PTD3 PTD4 PTD5 PTD6 PTD7
+
+
+SWD pinout:
+    SWD_CLK(PTA0) SWD_DIO(PTA3)
+    SWD pins are placed next to reset button; SWD_CLK, SWD_DIO, GND, VCC from top.
+    Note that RESET is also needed to get full control with OpenOCD.
+
+LED:
+    PTA19(turns on with output high)
+
+
+
+Memory map
+==========
+kiibohd bootloader: Lib/mk20dx128vlf5.bootloader.ld
+0x0000_0000 +-------------------+ -----------------+---------------+ Vector table
+            | .vectors          | ------------.    | StackPointer0 |     of Bootloader
+            | .startup          |              \   | ResetHandler1 |
+            | .rodata           |               `--+---------------+ 0xF8
+0x0000_0400 | .flashconfig(0x10)| 
+      _0410 | .text             |
+            | .init             |
+0x0000_1000 +-------------------+ -----------------+---------------+ Vector table
+            | _app_rom          | ------------.    |               |     of App
+            |                   |              \   |               |
+            |                   |               `--+---------------+
+            |                   |
+            ~                   ~
+            |                   |
+0x07FF_FFFF +-------------------+ 128KB
+
+
+0x1FFF_E000 +-------------------+ -----------------+---------------+ Vector table
+      _E0F8 |                   | ------------.    |               |     of App(copied)
+            |                   |              \   |               |  
+            |                   |               `--+---------------+ mbed NVIC
+            |                   |
+            | RAM               |
+            |                8KB|
+0x2000_0000 +-------------------+
+            |                   |
+            |                   |
+            |                   |
+            |                   |
+            | RAM               |
+            |                8KB|
+0x2000_2000 +-------------------+ _estack
+
+
+
+
diff --git a/keyboard/infinity/config.h b/keyboard/infinity/config.h
new file mode 100644
index 0000000000..dc734dbdbe
--- /dev/null
+++ b/keyboard/infinity/config.h
@@ -0,0 +1,43 @@
+/*
+Copyright 2014 Jun Wako <wakojun@gmail.com>
+
+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/>.
+*/
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#if 0
+// duplicated name against mbed USBDeivce
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x3BED
+#endif
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    tmk.
+#define PRODUCT         Infinitiy
+#define DESCRIPTION     Massdrop Infinity keyboard firmware by tmk
+
+
+/* matrix size */
+#define MATRIX_ROWS 9   // Strobe
+#define MATRIX_COLS 7   // Sense
+
+/* key combination for command */
+#define IS_COMMAND() (keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT))) 
+
+
+/* for prototype */
+//#define INFINITY_PROTOTYPE
+
+#endif
diff --git a/keyboard/infinity/keymap.c b/keyboard/infinity/keymap.c
new file mode 100644
index 0000000000..4726cee653
--- /dev/null
+++ b/keyboard/infinity/keymap.c
@@ -0,0 +1,48 @@
+#include "keymap_common.h"
+
+const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Layer 0: Default Layer
+     * ,-----------------------------------------------------------.
+     * |Esc|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|  `|BSp|
+     * |-----------------------------------------------------------|
+     * |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|    \|
+     * |-----------------------------------------------------------|
+     * |Contro|  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Enter   |
+     * |-----------------------------------------------------------|
+     * |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  .|  /|Shift |Fn0|
+     * |-----------------------------------------------------------'
+     * |     |Gui|Alt  |         Space         |Alt  |Gui|   |     |
+     * `-----------------------------------------------------------'
+     */
+    [0] =
+    KEYMAP(ESC, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSLS, GRV, \
+           TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,BSPC, \
+           LCTL,A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,ENT,  \
+           LSFT,Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,RSFT,FN0, \
+           NO,  LGUI,LALT,          SPC,                RALT,RGUI,NO, NO),
+
+    /* Layer 1: HHKB mode (HHKB Fn)
+     * ,-----------------------------------------------------------.
+     * |Pwr| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Ins|Del|
+     * |-----------------------------------------------------------|
+     * |Caps |   |   |   |   |   |   |   |Psc|Slk|Pus|Up |   |Backs|
+     * |-----------------------------------------------------------|
+     * |      |VoD|VoU|Mut|   |   |  *|  /|Hom|PgU|Lef|Rig|Enter   |
+     * |-----------------------------------------------------------|
+     * |        |   |   |   |   |   |  +|  -|End|PgD|Dow|      |   |
+     * `-----------------------------------------------------------'
+     * |     |Gui|Alt  |         Space         |Alt  |Gui|   |     |
+     * `-----------------------------------------------------------'
+     */ 
+    [1] = 
+    KEYMAP(PWR, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12, INS, DEL,   \
+           CAPS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,PSCR,SLCK,PAUS, UP, TRNS, BSPC,      \
+           TRNS,VOLD,VOLU,MUTE,TRNS,TRNS,PAST,PSLS,HOME,PGUP,LEFT,RGHT,PENT,            \
+           TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,PPLS,PMNS,END, PGDN,DOWN,TRNS,TRNS,            \
+           TRNS,TRNS,TRNS,          TRNS,               TRNS,TRNS,TRNS,TRNS),
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+    [0] = ACTION_LAYER_MOMENTARY(1),
+};
+
diff --git a/keyboard/infinity/keymap_common.c b/keyboard/infinity/keymap_common.c
new file mode 100644
index 0000000000..fdb1769e1c
--- /dev/null
+++ b/keyboard/infinity/keymap_common.c
@@ -0,0 +1,30 @@
+/*
+Copyright 2012,2013 Jun Wako <wakojun@gmail.com>
+
+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 "keymap_common.h"
+
+
+/* translates key to keycode */
+uint8_t keymap_key_to_keycode(uint8_t layer, keypos_t key)
+{
+    return pgm_read_byte(&keymaps[(layer)][(key.row)][(key.col)]);
+}
+
+/* translates Fn keycode to action */
+action_t keymap_fn_to_action(uint8_t keycode)
+{
+    return (action_t){ .code = pgm_read_word(&fn_actions[FN_INDEX(keycode)]) };
+}
diff --git a/keyboard/infinity/keymap_common.h b/keyboard/infinity/keymap_common.h
new file mode 100644
index 0000000000..b0f765bfeb
--- /dev/null
+++ b/keyboard/infinity/keymap_common.h
@@ -0,0 +1,80 @@
+/*
+Copyright 2014 Jun Wako <wakojun@gmail.com>
+
+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/>.
+*/
+#ifndef KEYMAP_COMMON_H
+#define KEYMAP_COMMON_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "keycode.h"
+#include "action.h"
+#include "action_macro.h"
+#include "report.h"
+#include "host.h"
+#include "print.h"
+#include "debug.h"
+#include "keymap.h"
+
+
+extern const uint8_t keymaps[][MATRIX_ROWS][MATRIX_COLS];
+extern const uint16_t fn_actions[];
+
+
+#ifdef INFINITY_PROTOTYPE
+
+/* Infinity prototype */
+#define KEYMAP( \
+    K00, K10, K20, K30, K40, K50, K60, K70, K80, K01, K11, K21, K31, K41, K86, \
+    K51, K61, K71, K81, K02, K12, K22, K32, K42, K52, K62, K72, K82, K03, \
+    K13, K23, K33, K43, K53, K63, K73, K83, K04, K14, K24, K34, K44, \
+    K54, K64, K74, K84, K05, K15, K25, K35, K45, K55, K65, K75, K85, \
+    K06, K16, K26,           K36,                K46, K56, K66, K76 \
+) { \
+    { KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06 }, \
+    { KC_##K10, KC_##K11, KC_##K12, KC_##K13, KC_##K14, KC_##K15, KC_##K16 }, \
+    { KC_##K20, KC_##K21, KC_##K22, KC_##K23, KC_##K24, KC_##K25, KC_##K26 }, \
+    { KC_##K30, KC_##K31, KC_##K32, KC_##K33, KC_##K34, KC_##K35, KC_##K36 }, \
+    { KC_##K40, KC_##K41, KC_##K42, KC_##K43, KC_##K44, KC_##K45, KC_##K46 }, \
+    { KC_##K50, KC_##K51, KC_##K52, KC_##K53, KC_##K54, KC_##K55, KC_##K56 }, \
+    { KC_##K60, KC_##K61, KC_##K62, KC_##K63, KC_##K64, KC_##K65, KC_##K66 }, \
+    { KC_##K70, KC_##K71, KC_##K72, KC_##K73, KC_##K74, KC_##K75, KC_##K76 }, \
+    { KC_##K80, KC_##K81, KC_##K82, KC_##K83, KC_##K84, KC_##K85, KC_##K86 }  \
+}
+
+#else
+
+/* Infinity production */
+#define KEYMAP( \
+    K00, K10, K20, K30, K40, K50, K60, K70, K80, K01, K11, K21, K31, K41, K51, \
+    K61, K71, K81, K02, K12, K22, K32, K42, K52, K62, K72, K82, K03, K13, \
+    K23, K33, K43, K53, K63, K73, K83, K04, K14, K24, K34, K44, K54, \
+    K64, K74, K84, K05, K15, K25, K35, K45, K55, K65, K75, K85, K06, \
+    K16, K26, K36,           K46,                K56, K66, K76, K86 \
+) { \
+    { KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06 }, \
+    { KC_##K10, KC_##K11, KC_##K12, KC_##K13, KC_##K14, KC_##K15, KC_##K16 }, \
+    { KC_##K20, KC_##K21, KC_##K22, KC_##K23, KC_##K24, KC_##K25, KC_##K26 }, \
+    { KC_##K30, KC_##K31, KC_##K32, KC_##K33, KC_##K34, KC_##K35, KC_##K36 }, \
+    { KC_##K40, KC_##K41, KC_##K42, KC_##K43, KC_##K44, KC_##K45, KC_##K46 }, \
+    { KC_##K50, KC_##K51, KC_##K52, KC_##K53, KC_##K54, KC_##K55, KC_##K56 }, \
+    { KC_##K60, KC_##K61, KC_##K62, KC_##K63, KC_##K64, KC_##K65, KC_##K66 }, \
+    { KC_##K70, KC_##K71, KC_##K72, KC_##K73, KC_##K74, KC_##K75, KC_##K76 }, \
+    { KC_##K80, KC_##K81, KC_##K82, KC_##K83, KC_##K84, KC_##K85, KC_##K86 }  \
+}
+
+#endif
+
+#endif
diff --git a/keyboard/infinity/led.c b/keyboard/infinity/led.c
new file mode 100644
index 0000000000..b7e638b254
--- /dev/null
+++ b/keyboard/infinity/led.c
@@ -0,0 +1,25 @@
+/*
+Copyright 2011 Jun Wako <wakojun@gmail.com>
+
+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 "stdint.h"
+#include "led.h"
+
+
+/* HHKB has no LEDs */
+void led_set(uint8_t usb_led)
+{
+}
diff --git a/keyboard/infinity/main.cpp b/keyboard/infinity/main.cpp
new file mode 100644
index 0000000000..847668a1de
--- /dev/null
+++ b/keyboard/infinity/main.cpp
@@ -0,0 +1,44 @@
+#include "MK20D5.h"
+#include "wait.h"
+#include "gpio_api.h"
+#include "PinNames.h"
+#include "matrix.h"
+#include "timer.h"
+
+#include "action.h"
+#include "keycode.h"
+#include "host.h"
+#include "host_driver.h"
+#include "mbed_driver.h"
+
+
+int main() {
+    gpio_t led;
+    gpio_init_out(&led, PTA19);
+
+    uint16_t t = 0;
+
+    host_set_driver(&mbed_driver);
+    keyboard_init();
+
+    while(1) {
+        keyboard_task();
+
+        bool matrix_on = false;
+        matrix_scan();
+        for (int i = 0; i < MATRIX_ROWS; i++) {
+            if (matrix_get_row(i)) {
+                matrix_on = true;
+                break;
+            }
+        }
+        if (matrix_on)
+            gpio_write(&led, 1);
+        else {
+            if (timer_elapsed(t) > 500) {
+                gpio_write(&led, !gpio_read(&led));
+                t = timer_read();
+            }
+        }
+    }
+}
diff --git a/keyboard/infinity/matrix.c b/keyboard/infinity/matrix.c
new file mode 100644
index 0000000000..478a40fd9e
--- /dev/null
+++ b/keyboard/infinity/matrix.c
@@ -0,0 +1,107 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include "gpio_api.h"
+#include "timer.h"
+#include "wait.h"
+#include "matrix.h"
+
+
+#ifndef DEBOUNCE
+#define DEBOUNCE    5
+#endif
+
+/*
+ * Infinity Pinusage:
+ * Column pins are input with internal pull-down. Row pins are output and strobe with high.
+ * Key is high or 1 when it turns on.
+ *
+ *     col: { PTD1, PTD2, PTD3, PTD4, PTD5, PTD6, PTD7 }
+ *     row: { PTB0, PTB1, PTB2, PTB3, PTB16, PTB17, PTC4, PTC5, PTD0 }
+ */
+static gpio_t col[MATRIX_COLS];
+static gpio_t row[MATRIX_ROWS];
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+static bool debouncing = false;
+static uint16_t debouncing_time = 0;
+
+
+void matrix_init(void)
+{
+    /* Column(sense) */
+    gpio_init_in_ex(&col[0], PTD1, PullDown);
+    gpio_init_in_ex(&col[1], PTD2, PullDown);
+    gpio_init_in_ex(&col[2], PTD3, PullDown);
+    gpio_init_in_ex(&col[3], PTD4, PullDown);
+    gpio_init_in_ex(&col[4], PTD5, PullDown);
+    gpio_init_in_ex(&col[5], PTD6, PullDown);
+    gpio_init_in_ex(&col[6], PTD7, PullDown);
+
+    /* Row(strobe) */
+    gpio_init_out_ex(&row[0], PTB0, 0);
+    gpio_init_out_ex(&row[1], PTB1, 0);
+    gpio_init_out_ex(&row[2], PTB2, 0);
+    gpio_init_out_ex(&row[3], PTB3, 0);
+    gpio_init_out_ex(&row[4], PTB16, 0);
+    gpio_init_out_ex(&row[5], PTB17, 0);
+    gpio_init_out_ex(&row[6], PTC4, 0);
+    gpio_init_out_ex(&row[7], PTC5, 0);
+    gpio_init_out_ex(&row[8], PTD0, 0);
+}
+
+uint8_t matrix_scan(void)
+{
+    for (int i = 0; i < MATRIX_ROWS; i++) {
+        matrix_row_t r = 0;
+
+        gpio_write(&row[i], 1);
+        wait_us(1); // need wait to settle pin state
+        for (int j = 0; j < MATRIX_COLS; j++) {
+            if (gpio_read(&col[j])) {
+                r |= (1<<j);
+            }
+        }
+        gpio_write(&row[i], 0);
+
+        if (matrix_debouncing[i] != r) {
+            matrix_debouncing[i] = r;
+            debouncing = true;
+            debouncing_time = timer_read();
+        }
+    }
+
+    if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
+        for (int i = 0; i < MATRIX_ROWS; i++) {
+            matrix[i] = matrix_debouncing[i];
+        }
+        debouncing = false;
+    }
+/*
+    if (debouncing) {
+        if (--debouncing) {
+            return 0;
+        } else {
+            for (int i = 0; i < MATRIX_ROWS; i++) {
+                matrix[i] = matrix_debouncing[i];
+            }
+        }
+    }
+*/
+    return 1;
+}
+
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+    return (matrix[row] & (1<<col));
+}
+
+matrix_row_t matrix_get_row(uint8_t row)
+{
+    return matrix[row];
+}
+
+void matrix_print(void)
+{
+}
diff --git a/keyboard/infinity/mbed-infinity.mk b/keyboard/infinity/mbed-infinity.mk
new file mode 100644
index 0000000000..f5fd2c9975
--- /dev/null
+++ b/keyboard/infinity/mbed-infinity.mk
@@ -0,0 +1,47 @@
+# based on Makefile exported form mbed.org
+# see http://mbed.org/handbook/Exporting-to-GCC-ARM-Embedded
+
+CPU = -mcpu=cortex-m4 -mthumb
+
+CC_SYMBOLS += \
+	-DTARGET_INFINITY \
+	-DTARGET_K20D50M \
+	-DTARGET_M4 \
+	-DTARGET_CORTEX_M \
+	-DTARGET_Freescale \
+	-DTOOLCHAIN_GCC_ARM \
+	-DTOOLCHAIN_GCC \
+	-D__CORTEX_M4 \
+	-DARM_MATH_CM4 \
+	-D__MBED__=1
+
+OBJECTS += \
+	$(OBJDIR)/mbed-infinity/cmsis_nvic.o \
+	$(OBJDIR)/mbed-infinity/system_MK20D5.o \
+	$(OBJDIR)/mbed-infinity/USBHAL_KL25Z.o \
+	$(OBJDIR)/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/TOOLCHAIN_GCC_ARM/startup_MK20D5.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/analogin_api.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/gpio_api.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/gpio_irq_api.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/i2c_api.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/pinmap.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/port_api.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/pwmout_api.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/rtc_api.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/serial_api.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/sleep.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/spi_api.o \
+	$(OBJDIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M/us_ticker.o
+
+INCLUDE_PATHS += \
+	-Imbed \
+	-I$(MBED_DIR)/libraries/mbed/targets \
+	-I$(MBED_DIR)/libraries/mbed/targets/cmsis \
+	-I$(MBED_DIR)/libraries/mbed/targets/cmsis/TARGET_Freescale \
+	-I$(MBED_DIR)/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M \
+	-I$(MBED_DIR)/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/TOOLCHAIN_GCC_ARM \
+	-I$(MBED_DIR)/libraries/mbed/targets/hal \
+	-I$(MBED_DIR)/libraries/mbed/targets/hal/TARGET_Freescale \
+	-I$(MBED_DIR)/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D50M
+
+LINKER_SCRIPT = mbed-infinity/infinity.ld
diff --git a/keyboard/infinity/mbed-infinity/README b/keyboard/infinity/mbed-infinity/README
new file mode 100644
index 0000000000..b0d226f793
--- /dev/null
+++ b/keyboard/infinity/mbed-infinity/README
@@ -0,0 +1,39 @@
+mbed fix for Infinity
+=====================
+Without linker script patch it doesn't place vector table in final binary.
+And clock is configured to 48MHz using internal clock reference and FLL multiplication.
+
+
+mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/system_MK20D5.c
+    Fix SystemInit: clock setup for internal clock. Inifinity has no external Xtal.
+
+mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/cmsis_nvic.c
+    Fix NVIC vector address of firmware 0x1000 instead of 0x0
+
+mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/TOOLCHAIN_GCC_ARM/MK20D5.ld
+    Fix memory map for Infinity bootloader
+        Flash starts at 0x1000
+        No flash config bytes sector
+
+USBDevice/USBDevice/USBHAL_KL25Z.cpp
+    Fix USB clock setup, see below.
+
+
+2015/01/04  Based on mbed-sdk @2f63fa7d78a26.
+
+
+
+Kinetis USB config
+==================
+Clock source: Internal reference clock wth FLL
+    SIM_SOPT[USBSRC] = 1(MCGPLLCLK/MCGFLLCLK)
+    SIM_SOPT[PLLSEL] = 0(MCGFLLCLK)
+
+Clock dividor:
+    SIM_CLKDIV2[USBDIV] = 0
+    SIM_CLKDIV2[USBFAC] = 0
+
+Clock enable:
+    SIM_SCGC4[USBOTG] = 1
+
+
diff --git a/keyboard/infinity/mbed-infinity/USBHAL_KL25Z.cpp b/keyboard/infinity/mbed-infinity/USBHAL_KL25Z.cpp
new file mode 100644
index 0000000000..90f02fa322
--- /dev/null
+++ b/keyboard/infinity/mbed-infinity/USBHAL_KL25Z.cpp
@@ -0,0 +1,557 @@
+/* Copyright (c) 2010-2011 mbed.org, MIT License
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+* and associated documentation files (the "Software"), to deal in the Software without
+* restriction, including without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or
+* substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#if defined(TARGET_KL25Z) | defined(TARGET_KL43Z) | defined(TARGET_KL46Z) | defined(TARGET_K20D50M) | defined(TARGET_K64F) | defined(TARGET_K22F)
+
+#include "USBHAL.h"
+
+USBHAL * USBHAL::instance;
+
+static volatile int epComplete = 0;
+
+// Convert physical endpoint number to register bit
+#define EP(endpoint) (1<<(endpoint))
+
+// Convert physical to logical
+#define PHY_TO_LOG(endpoint)    ((endpoint)>>1)
+
+// Get endpoint direction
+#define IN_EP(endpoint)     ((endpoint) & 1U ? true : false)
+#define OUT_EP(endpoint)    ((endpoint) & 1U ? false : true)
+
+#define BD_OWN_MASK        (1<<7)
+#define BD_DATA01_MASK     (1<<6)
+#define BD_KEEP_MASK       (1<<5)
+#define BD_NINC_MASK       (1<<4)
+#define BD_DTS_MASK        (1<<3)
+#define BD_STALL_MASK      (1<<2)
+
+#define TX    1
+#define RX    0
+#define ODD   0
+#define EVEN  1
+// this macro waits a physical endpoint number
+#define EP_BDT_IDX(ep, dir, odd) (((ep * 4) + (2 * dir) + (1 *  odd)))
+
+#define SETUP_TOKEN    0x0D
+#define IN_TOKEN       0x09
+#define OUT_TOKEN      0x01
+#define TOK_PID(idx)   ((bdt[idx].info >> 2) & 0x0F)
+
+// for each endpt: 8 bytes
+typedef struct BDT {
+    uint8_t   info;       // BD[0:7]
+    uint8_t   dummy;      // RSVD: BD[8:15]
+    uint16_t  byte_count; // BD[16:32]
+    uint32_t  address;    // Addr
+} BDT;
+
+
+// there are:
+//    * 16 bidirectionnal endpt -> 32 physical endpt
+//    * as there are ODD and EVEN buffer -> 32*2 bdt
+__attribute__((__aligned__(512))) BDT bdt[NUMBER_OF_PHYSICAL_ENDPOINTS * 2];
+uint8_t * endpoint_buffer[(NUMBER_OF_PHYSICAL_ENDPOINTS - 2) * 2];
+uint8_t * endpoint_buffer_iso[2*2];
+
+static uint8_t set_addr = 0;
+static uint8_t addr = 0;
+
+static uint32_t Data1  = 0x55555555;
+
+static uint32_t frameNumber() {
+    return((USB0->FRMNUML | (USB0->FRMNUMH << 8)) & 0x07FF);
+}
+
+uint32_t USBHAL::endpointReadcore(uint8_t endpoint, uint8_t *buffer) {
+    return 0;
+}
+
+USBHAL::USBHAL(void) {
+    // Disable IRQ
+    NVIC_DisableIRQ(USB0_IRQn);
+
+#if defined(TARGET_K64F)
+    MPU->CESR=0;
+#endif
+    // fill in callback array
+    epCallback[0] = &USBHAL::EP1_OUT_callback;
+    epCallback[1] = &USBHAL::EP1_IN_callback;
+    epCallback[2] = &USBHAL::EP2_OUT_callback;
+    epCallback[3] = &USBHAL::EP2_IN_callback;
+    epCallback[4] = &USBHAL::EP3_OUT_callback;
+    epCallback[5] = &USBHAL::EP3_IN_callback;
+    epCallback[6] = &USBHAL::EP4_OUT_callback;
+    epCallback[7] = &USBHAL::EP4_IN_callback;
+    epCallback[8] = &USBHAL::EP5_OUT_callback;
+    epCallback[9] = &USBHAL::EP5_IN_callback;
+    epCallback[10] = &USBHAL::EP6_OUT_callback;
+    epCallback[11] = &USBHAL::EP6_IN_callback;
+    epCallback[12] = &USBHAL::EP7_OUT_callback;
+    epCallback[13] = &USBHAL::EP7_IN_callback;
+    epCallback[14] = &USBHAL::EP8_OUT_callback;
+    epCallback[15] = &USBHAL::EP8_IN_callback;
+    epCallback[16] = &USBHAL::EP9_OUT_callback;
+    epCallback[17] = &USBHAL::EP9_IN_callback;
+    epCallback[18] = &USBHAL::EP10_OUT_callback;
+    epCallback[19] = &USBHAL::EP10_IN_callback;
+    epCallback[20] = &USBHAL::EP11_OUT_callback;
+    epCallback[21] = &USBHAL::EP11_IN_callback;
+    epCallback[22] = &USBHAL::EP12_OUT_callback;
+    epCallback[23] = &USBHAL::EP12_IN_callback;
+    epCallback[24] = &USBHAL::EP13_OUT_callback;
+    epCallback[25] = &USBHAL::EP13_IN_callback;
+    epCallback[26] = &USBHAL::EP14_OUT_callback;
+    epCallback[27] = &USBHAL::EP14_IN_callback;
+    epCallback[28] = &USBHAL::EP15_OUT_callback;
+    epCallback[29] = &USBHAL::EP15_IN_callback;
+
+#if defined(TARGET_KL43Z)
+    // enable USBFS clock
+    SIM->SCGC4 |= SIM_SCGC4_USBFS_MASK;
+
+    // enable the IRC48M clock
+    USB0->CLK_RECOVER_IRC_EN |= USB_CLK_RECOVER_IRC_EN_IRC_EN_MASK;
+
+    // enable the USB clock recovery tuning
+    USB0->CLK_RECOVER_CTRL |= USB_CLK_RECOVER_CTRL_CLOCK_RECOVER_EN_MASK;
+
+    // choose usb src clock
+    SIM->SOPT2 |= SIM_SOPT2_USBSRC_MASK;
+#elif defined(TARGET_INFINITY)
+    // USB clock source: FLL
+    SIM->SOPT2 |= SIM_SOPT2_USBSRC_MASK;
+
+    // enable OTG clock
+    SIM->SCGC4 |= SIM_SCGC4_USBOTG_MASK;
+#else
+    // choose usb src as PLL
+    SIM->SOPT2 &= ~SIM_SOPT2_PLLFLLSEL_MASK;
+    SIM->SOPT2 |= (SIM_SOPT2_USBSRC_MASK | (1 << SIM_SOPT2_PLLFLLSEL_SHIFT));
+
+    // enable OTG clock
+    SIM->SCGC4 |= SIM_SCGC4_USBOTG_MASK;
+#endif
+
+    // Attach IRQ
+    instance = this;
+    NVIC_SetVector(USB0_IRQn, (uint32_t)&_usbisr);
+    NVIC_EnableIRQ(USB0_IRQn);
+
+    // USB Module Configuration
+    // Reset USB Module
+    USB0->USBTRC0 |= USB_USBTRC0_USBRESET_MASK;
+    while(USB0->USBTRC0 & USB_USBTRC0_USBRESET_MASK);
+
+    // Set BDT Base Register
+    USB0->BDTPAGE1 = (uint8_t)((uint32_t)bdt>>8);
+    USB0->BDTPAGE2 = (uint8_t)((uint32_t)bdt>>16);
+    USB0->BDTPAGE3 = (uint8_t)((uint32_t)bdt>>24);
+
+    // Clear interrupt flag
+    USB0->ISTAT = 0xff;
+
+    // USB Interrupt Enablers
+    USB0->INTEN |= USB_INTEN_TOKDNEEN_MASK |
+                   USB_INTEN_SOFTOKEN_MASK |
+                   USB_INTEN_ERROREN_MASK  |
+                   USB_INTEN_USBRSTEN_MASK;
+
+    // Disable weak pull downs
+    USB0->USBCTRL &= ~(USB_USBCTRL_PDE_MASK | USB_USBCTRL_SUSP_MASK);
+
+    USB0->USBTRC0 |= 0x40;
+}
+
+USBHAL::~USBHAL(void) { }
+
+void USBHAL::connect(void) {
+    // enable USB
+    USB0->CTL |= USB_CTL_USBENSOFEN_MASK;
+    // Pull up enable
+    USB0->CONTROL |= USB_CONTROL_DPPULLUPNONOTG_MASK;
+}
+
+void USBHAL::disconnect(void) {
+    // disable USB
+    USB0->CTL &= ~USB_CTL_USBENSOFEN_MASK;
+    // Pull up disable
+    USB0->CONTROL &= ~USB_CONTROL_DPPULLUPNONOTG_MASK;
+
+    //Free buffers if required:
+    for (int i = 0; i<(NUMBER_OF_PHYSICAL_ENDPOINTS - 2) * 2; i++) {
+        free(endpoint_buffer[i]);
+        endpoint_buffer[i] = NULL;
+    }
+    free(endpoint_buffer_iso[2]);
+    endpoint_buffer_iso[2] = NULL;
+    free(endpoint_buffer_iso[0]);
+    endpoint_buffer_iso[0] = NULL;
+}
+
+void USBHAL::configureDevice(void) {
+    // not needed
+}
+
+void USBHAL::unconfigureDevice(void) {
+    // not needed
+}
+
+void USBHAL::setAddress(uint8_t address) {
+    // we don't set the address now otherwise the usb controller does not ack
+    // we set a flag instead
+    // see usbisr when an IN token is received
+    set_addr = 1;
+    addr = address;
+}
+
+bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t flags) {
+    uint32_t handshake_flag = 0;
+    uint8_t * buf;
+
+    if (endpoint > NUMBER_OF_PHYSICAL_ENDPOINTS - 1) {
+        return false;
+    }
+
+    uint32_t log_endpoint = PHY_TO_LOG(endpoint);
+
+    if ((flags & ISOCHRONOUS) == 0) {
+        handshake_flag = USB_ENDPT_EPHSHK_MASK;
+        if (IN_EP(endpoint)) {
+            if (endpoint_buffer[EP_BDT_IDX(log_endpoint, TX, ODD)] == NULL)
+                endpoint_buffer[EP_BDT_IDX(log_endpoint, TX, ODD)] = (uint8_t *) malloc (64*2);
+            buf = &endpoint_buffer[EP_BDT_IDX(log_endpoint, TX, ODD)][0];
+        } else {
+            if (endpoint_buffer[EP_BDT_IDX(log_endpoint, RX, ODD)] == NULL)
+                endpoint_buffer[EP_BDT_IDX(log_endpoint, RX, ODD)] = (uint8_t *) malloc (64*2);
+            buf = &endpoint_buffer[EP_BDT_IDX(log_endpoint, RX, ODD)][0];
+        }
+    } else {
+        if (IN_EP(endpoint)) {
+            if (endpoint_buffer_iso[2] == NULL)
+                endpoint_buffer_iso[2] = (uint8_t *) malloc (1023*2);
+            buf = &endpoint_buffer_iso[2][0];
+        } else {
+            if (endpoint_buffer_iso[0] == NULL)
+                endpoint_buffer_iso[0] = (uint8_t *) malloc (1023*2);
+            buf = &endpoint_buffer_iso[0][0];
+        }
+    }
+
+    // IN endpt -> device to host (TX)
+    if (IN_EP(endpoint)) {
+        USB0->ENDPOINT[log_endpoint].ENDPT |= handshake_flag |        // ep handshaking (not if iso endpoint)
+                                              USB_ENDPT_EPTXEN_MASK;  // en TX (IN) tran
+        bdt[EP_BDT_IDX(log_endpoint, TX, ODD )].address = (uint32_t) buf;
+        bdt[EP_BDT_IDX(log_endpoint, TX, EVEN)].address = 0;
+    }
+    // OUT endpt -> host to device (RX)
+    else {
+        USB0->ENDPOINT[log_endpoint].ENDPT |= handshake_flag |        // ep handshaking (not if iso endpoint)
+                                              USB_ENDPT_EPRXEN_MASK;  // en RX (OUT) tran.
+        bdt[EP_BDT_IDX(log_endpoint, RX, ODD )].byte_count = maxPacket;
+        bdt[EP_BDT_IDX(log_endpoint, RX, ODD )].address    = (uint32_t) buf;
+        bdt[EP_BDT_IDX(log_endpoint, RX, ODD )].info       = BD_OWN_MASK | BD_DTS_MASK;
+        bdt[EP_BDT_IDX(log_endpoint, RX, EVEN)].info       = 0;
+    }
+
+    Data1 |= (1 << endpoint);
+
+    return true;
+}
+
+// read setup packet
+void USBHAL::EP0setup(uint8_t *buffer) {
+    uint32_t sz;
+    endpointReadResult(EP0OUT, buffer, &sz);
+}
+
+void USBHAL::EP0readStage(void) {
+    Data1 &= ~1UL;  // set DATA0
+    bdt[0].info = (BD_DTS_MASK | BD_OWN_MASK);
+}
+
+void USBHAL::EP0read(void) {
+    uint32_t idx = EP_BDT_IDX(PHY_TO_LOG(EP0OUT), RX, 0);
+    bdt[idx].byte_count = MAX_PACKET_SIZE_EP0;
+}
+
+uint32_t USBHAL::EP0getReadResult(uint8_t *buffer) {
+    uint32_t sz;
+    endpointReadResult(EP0OUT, buffer, &sz);
+    return sz;
+}
+
+void USBHAL::EP0write(uint8_t *buffer, uint32_t size) {
+    endpointWrite(EP0IN, buffer, size);
+}
+
+void USBHAL::EP0getWriteResult(void) {
+}
+
+void USBHAL::EP0stall(void) {
+    stallEndpoint(EP0OUT);
+}
+
+EP_STATUS USBHAL::endpointRead(uint8_t endpoint, uint32_t maximumSize) {
+    endpoint = PHY_TO_LOG(endpoint);
+    uint32_t idx = EP_BDT_IDX(endpoint, RX, 0);
+    bdt[idx].byte_count = maximumSize;
+    return EP_PENDING;
+}
+
+EP_STATUS USBHAL::endpointReadResult(uint8_t endpoint, uint8_t * buffer, uint32_t *bytesRead) {
+    uint32_t n, sz, idx, setup = 0;
+    uint8_t not_iso;
+    uint8_t * ep_buf;
+
+    uint32_t log_endpoint = PHY_TO_LOG(endpoint);
+
+    if (endpoint > NUMBER_OF_PHYSICAL_ENDPOINTS - 1) {
+        return EP_INVALID;
+    }
+
+    // if read on a IN endpoint -> error
+    if (IN_EP(endpoint)) {
+        return EP_INVALID;
+    }
+
+    idx = EP_BDT_IDX(log_endpoint, RX, 0);
+    sz  = bdt[idx].byte_count;
+    not_iso = USB0->ENDPOINT[log_endpoint].ENDPT & USB_ENDPT_EPHSHK_MASK;
+
+    //for isochronous endpoint, we don't wait an interrupt
+    if ((log_endpoint != 0) && not_iso && !(epComplete & EP(endpoint))) {
+        return EP_PENDING;
+    }
+
+    if ((log_endpoint == 0) && (TOK_PID(idx) == SETUP_TOKEN)) {
+        setup = 1;
+    }
+
+    // non iso endpoint
+    if (not_iso) {
+        ep_buf = endpoint_buffer[idx];
+    } else {
+        ep_buf = endpoint_buffer_iso[0];
+    }
+
+    for (n = 0; n < sz; n++) {
+        buffer[n] = ep_buf[n];
+    }
+
+    if (((Data1 >> endpoint) & 1) == ((bdt[idx].info >> 6) & 1)) {
+        if (setup && (buffer[6] == 0))  // if no setup data stage,
+            Data1 &= ~1UL;              // set DATA0
+        else
+            Data1 ^= (1 << endpoint);
+    }
+
+    if (((Data1 >> endpoint) & 1)) {
+        bdt[idx].info = BD_DTS_MASK | BD_DATA01_MASK | BD_OWN_MASK;
+    }
+    else {
+        bdt[idx].info = BD_DTS_MASK | BD_OWN_MASK;
+    }
+
+    USB0->CTL &= ~USB_CTL_TXSUSPENDTOKENBUSY_MASK;
+    *bytesRead = sz;
+
+    epComplete &= ~EP(endpoint);
+    return EP_COMPLETED;
+}
+
+EP_STATUS USBHAL::endpointWrite(uint8_t endpoint, uint8_t *data, uint32_t size) {
+    uint32_t idx, n;
+    uint8_t * ep_buf;
+
+    if (endpoint > NUMBER_OF_PHYSICAL_ENDPOINTS - 1) {
+        return EP_INVALID;
+    }
+
+    // if write on a OUT endpoint -> error
+    if (OUT_EP(endpoint)) {
+        return EP_INVALID;
+    }
+
+    idx = EP_BDT_IDX(PHY_TO_LOG(endpoint), TX, 0);
+    bdt[idx].byte_count = size;
+
+
+    // non iso endpoint
+    if (USB0->ENDPOINT[PHY_TO_LOG(endpoint)].ENDPT & USB_ENDPT_EPHSHK_MASK) {
+        ep_buf = endpoint_buffer[idx];
+    } else {
+        ep_buf = endpoint_buffer_iso[2];
+    }
+
+    for (n = 0; n < size; n++) {
+        ep_buf[n] = data[n];
+    }
+
+    if ((Data1 >> endpoint) & 1) {
+        bdt[idx].info = BD_OWN_MASK | BD_DTS_MASK;
+    } else {
+        bdt[idx].info = BD_OWN_MASK | BD_DTS_MASK | BD_DATA01_MASK;
+    }
+
+    Data1 ^= (1 << endpoint);
+
+    return EP_PENDING;
+}
+
+EP_STATUS USBHAL::endpointWriteResult(uint8_t endpoint) {
+    if (epComplete & EP(endpoint)) {
+        epComplete &= ~EP(endpoint);
+        return EP_COMPLETED;
+    }
+
+    return EP_PENDING;
+}
+
+void USBHAL::stallEndpoint(uint8_t endpoint) {
+    USB0->ENDPOINT[PHY_TO_LOG(endpoint)].ENDPT |= USB_ENDPT_EPSTALL_MASK;
+}
+
+void USBHAL::unstallEndpoint(uint8_t endpoint) {
+    USB0->ENDPOINT[PHY_TO_LOG(endpoint)].ENDPT &= ~USB_ENDPT_EPSTALL_MASK;
+}
+
+bool USBHAL::getEndpointStallState(uint8_t endpoint) {
+    uint8_t stall = (USB0->ENDPOINT[PHY_TO_LOG(endpoint)].ENDPT & USB_ENDPT_EPSTALL_MASK);
+    return (stall) ? true : false;
+}
+
+void USBHAL::remoteWakeup(void) {
+    // [TODO]
+}
+
+
+void USBHAL::_usbisr(void) {
+    instance->usbisr();
+}
+
+
+void USBHAL::usbisr(void) {
+    uint8_t i;
+    uint8_t istat = USB0->ISTAT;
+
+    // reset interrupt
+    if (istat & USB_ISTAT_USBRST_MASK) {
+        // disable all endpt
+        for(i = 0; i < 16; i++) {
+            USB0->ENDPOINT[i].ENDPT = 0x00;
+        }
+
+        // enable control endpoint
+        realiseEndpoint(EP0OUT, MAX_PACKET_SIZE_EP0, 0);
+        realiseEndpoint(EP0IN, MAX_PACKET_SIZE_EP0, 0);
+
+        Data1 = 0x55555555;
+        USB0->CTL |=  USB_CTL_ODDRST_MASK;
+
+        USB0->ISTAT   =  0xFF;  // clear all interrupt status flags
+        USB0->ERRSTAT =  0xFF;  // clear all error flags
+        USB0->ERREN   =  0xFF;  // enable error interrupt sources
+        USB0->ADDR    =  0x00;  // set default address
+
+        return;
+    }
+
+    // resume interrupt
+    if (istat & USB_ISTAT_RESUME_MASK) {
+        USB0->ISTAT = USB_ISTAT_RESUME_MASK;
+    }
+
+    // SOF interrupt
+    if (istat & USB_ISTAT_SOFTOK_MASK) {
+        USB0->ISTAT = USB_ISTAT_SOFTOK_MASK;
+        // SOF event, read frame number
+        SOF(frameNumber());
+    }
+
+    // stall interrupt
+    if (istat & 1<<7) {
+        if (USB0->ENDPOINT[0].ENDPT & USB_ENDPT_EPSTALL_MASK)
+            USB0->ENDPOINT[0].ENDPT &= ~USB_ENDPT_EPSTALL_MASK;
+        USB0->ISTAT |= USB_ISTAT_STALL_MASK;
+    }
+
+    // token interrupt
+    if (istat & 1<<3) {
+        uint32_t num  = (USB0->STAT >> 4) & 0x0F;
+        uint32_t dir  = (USB0->STAT >> 3) & 0x01;
+        uint32_t ev_odd = (USB0->STAT >> 2) & 0x01;
+
+        // setup packet
+        if ((num == 0) && (TOK_PID((EP_BDT_IDX(num, dir, ev_odd))) == SETUP_TOKEN)) {
+            Data1 &= ~0x02;
+            bdt[EP_BDT_IDX(0, TX, EVEN)].info &= ~BD_OWN_MASK;
+            bdt[EP_BDT_IDX(0, TX, ODD)].info  &= ~BD_OWN_MASK;
+
+            // EP0 SETUP event (SETUP data received)
+            EP0setupCallback();
+
+        } else {
+            // OUT packet
+            if (TOK_PID((EP_BDT_IDX(num, dir, ev_odd))) == OUT_TOKEN) {
+                if (num == 0)
+                    EP0out();
+                else {
+                    epComplete |= (1 << EP(num));
+                    if ((instance->*(epCallback[EP(num) - 2]))()) {
+                        epComplete &= ~(1 << EP(num));
+                    }
+                }
+            }
+
+            // IN packet
+            if (TOK_PID((EP_BDT_IDX(num, dir, ev_odd))) == IN_TOKEN) {
+                if (num == 0) {
+                    EP0in();
+                    if (set_addr == 1) {
+                        USB0->ADDR = addr & 0x7F;
+                        set_addr = 0;
+                    }
+                }
+                else {
+                    epComplete |= (1 << (EP(num) + 1));
+                    if ((instance->*(epCallback[EP(num) + 1 - 2]))()) {
+                        epComplete &= ~(1 << (EP(num) + 1));
+                    }
+                }
+            }
+        }
+
+        USB0->ISTAT = USB_ISTAT_TOKDNE_MASK;
+    }
+
+    // sleep interrupt
+    if (istat & 1<<4) {
+        USB0->ISTAT |= USB_ISTAT_SLEEP_MASK;
+    }
+
+    // error interrupt
+    if (istat & USB_ISTAT_ERROR_MASK) {
+        USB0->ERRSTAT = 0xFF;
+        USB0->ISTAT |= USB_ISTAT_ERROR_MASK;
+    }
+}
+
+
+#endif
diff --git a/keyboard/infinity/mbed-infinity/cmsis_nvic.c b/keyboard/infinity/mbed-infinity/cmsis_nvic.c
new file mode 100644
index 0000000000..985c1d33f5
--- /dev/null
+++ b/keyboard/infinity/mbed-infinity/cmsis_nvic.c
@@ -0,0 +1,55 @@
+/* mbed Microcontroller Library
+ * CMSIS-style functionality to support dynamic vectors
+ *******************************************************************************
+ * Copyright (c) 2011 ARM Limited. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name of ARM Limited nor the names of its 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 HOLDER 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 "cmsis_nvic.h"
+
+#define NVIC_RAM_VECTOR_ADDRESS (0x1FFFE000)  // Vectors positioned at start of RAM
+#define NVIC_FLASH_VECTOR_ADDRESS (0x1000)       // Initial vector position in flash
+
+void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
+    uint32_t *vectors = (uint32_t*)SCB->VTOR;
+    uint32_t i;
+
+    // Copy and switch to dynamic vectors if the first time called
+    if (SCB->VTOR == NVIC_FLASH_VECTOR_ADDRESS) {
+        uint32_t *old_vectors = vectors;
+        vectors = (uint32_t*)NVIC_RAM_VECTOR_ADDRESS;
+        for (i=0; i<NVIC_NUM_VECTORS; i++) {
+            vectors[i] = old_vectors[i];
+        }
+        SCB->VTOR = (uint32_t)NVIC_RAM_VECTOR_ADDRESS;
+    }
+    vectors[IRQn + 16] = vector;
+}
+
+uint32_t NVIC_GetVector(IRQn_Type IRQn) {
+    uint32_t *vectors = (uint32_t*)SCB->VTOR;
+    return vectors[IRQn + 16];
+}
diff --git a/keyboard/infinity/mbed-infinity/infinity.ld b/keyboard/infinity/mbed-infinity/infinity.ld
new file mode 100644
index 0000000000..decdaa26e0
--- /dev/null
+++ b/keyboard/infinity/mbed-infinity/infinity.ld
@@ -0,0 +1,156 @@
+/* 
+ * Linker script for Massdrop Infinity
+ * Infinity has bootloader in top 4KB sector of flash and app should be placed after the area.
+ *
+ * based on mbed.org K20 ARM GCC linker script file: MK20D5.ld
+ */
+
+MEMORY
+{
+  /* Infinity blootloader uses 4KB */
+  FLASH (rx) : ORIGIN = 4K, LENGTH = 128K - 4K
+  RAM (rwx) : ORIGIN = 0x1FFFE0F8, LENGTH = 16K - 0xF8
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ * _reset_init : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ * __exidx_start
+ * __exidx_end
+ * __etext
+ * __data_start__
+ * __preinit_array_start
+ * __preinit_array_end
+ * __init_array_start
+ * __init_array_end
+ * __fini_array_start
+ * __fini_array_end
+ * __data_end__
+ * __bss_start__
+ * __bss_end__
+ * __end__
+ * end
+ * __HeapLimit
+ * __StackLimit
+ * __StackTop
+ * __stack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+    .text :
+    {
+        __vector_table = .;
+        KEEP(*(.isr_vector))
+        *(.text.Reset_Handler)
+        *(.text.System_Init)
+         . = ALIGN(4);
+
+        *(.text*)
+
+        KEEP(*(.init))
+        KEEP(*(.fini))
+
+        /* .ctors */
+        *crtbegin.o(.ctors)
+        *crtbegin?.o(.ctors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+        *(SORT(.ctors.*))
+        *(.ctors)
+
+        /* .dtors */
+        *crtbegin.o(.dtors)
+        *crtbegin?.o(.dtors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+        *(SORT(.dtors.*))
+        *(.dtors)
+
+        *(.rodata*)
+
+        KEEP(*(.eh_frame*))
+    } > FLASH
+
+    .ARM.extab :
+    {
+        *(.ARM.extab* .gnu.linkonce.armextab.*)
+    } > FLASH
+
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+    } > FLASH
+    __exidx_end = .;
+
+    __etext = .;
+
+    .data : AT (__etext)
+    {
+        __data_start__ = .;
+        *(vtable)
+        *(.data*)
+
+        . = ALIGN(4);
+        /* preinit data */
+        PROVIDE_HIDDEN (__preinit_array_start = .);
+        KEEP(*(.preinit_array))
+        PROVIDE_HIDDEN (__preinit_array_end = .);
+
+        . = ALIGN(4);
+        /* init data */
+        PROVIDE_HIDDEN (__init_array_start = .);
+        KEEP(*(SORT(.init_array.*)))
+        KEEP(*(.init_array))
+        PROVIDE_HIDDEN (__init_array_end = .);
+
+
+        . = ALIGN(4);
+        /* finit data */
+        PROVIDE_HIDDEN (__fini_array_start = .);
+        KEEP(*(SORT(.fini_array.*)))
+        KEEP(*(.fini_array))
+        PROVIDE_HIDDEN (__fini_array_end = .);
+
+        . = ALIGN(4);
+        /* All data end */
+        __data_end__ = .;
+
+    } > RAM
+
+    .bss :
+    {
+        __bss_start__ = .;
+        *(.bss*)
+        *(COMMON)
+        __bss_end__ = .;
+    } > RAM
+
+    .heap :
+    {
+        __end__ = .;
+        end = __end__;
+        *(.heap*)
+        __HeapLimit = .;
+    } > RAM
+
+    /* .stack_dummy section doesn't contains any symbols. It is only
+     * used for linker to calculate size of stack sections, and assign
+     * values to stack symbols later */
+    .stack_dummy :
+    {
+        *(.stack)
+    } > RAM
+
+    /* Set stack top to end of RAM, and stack limit move down by
+     * size of stack_dummy section */
+    __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
+    PROVIDE(__stack = __StackTop);
+
+    /* Check if data + heap + stack exceeds RAM limit */
+    ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}
diff --git a/keyboard/infinity/mbed-infinity/system_MK20D5.c b/keyboard/infinity/mbed-infinity/system_MK20D5.c
new file mode 100644
index 0000000000..4f4e2a2624
--- /dev/null
+++ b/keyboard/infinity/mbed-infinity/system_MK20D5.c
@@ -0,0 +1,299 @@
+/*
+** ###################################################################
+**     Compilers:           ARM Compiler
+**                          Freescale C/C++ for Embedded ARM
+**                          GNU C Compiler
+**                          IAR ANSI C/C++ Compiler for ARM
+**
+**     Reference manuals:   K20P64M50SF0RM Rev. 1, Oct 2011
+**                          K20P32M50SF0RM Rev. 1, Oct 2011
+**                          K20P48M50SF0RM Rev. 1, Oct 2011
+**
+**     Version:             rev. 1.0, 2011-12-15
+**
+**     Abstract:
+**         Provides a system configuration function and a global variable that
+**         contains the system frequency. It configures the device and initializes
+**         the oscillator (PLL) that is part of the microcontroller device.
+**
+**     Copyright: 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+**
+**     http:                 www.freescale.com
+**     mail:                 support@freescale.com
+**
+**     Revisions:
+**     - rev. 1.0 (2011-12-15)
+**         Initial version
+**
+** ###################################################################
+*/
+
+/**
+ * @file MK20D5
+ * @version 1.0
+ * @date 2011-12-15
+ * @brief Device specific configuration file for MK20D5 (implementation file)
+ *
+ * Provides a system configuration function and a global variable that contains
+ * the system frequency. It configures the device and initializes the oscillator
+ * (PLL) that is part of the microcontroller device.
+ */
+
+#include <stdint.h>
+#include "MK20D5.h"
+
+#define DISABLE_WDOG    1
+
+#define CLOCK_SETUP     3
+/* Predefined clock setups
+   0 ... Multipurpose Clock Generator (MCG) in FLL Engaged Internal (FEI) mode
+         Reference clock source for MCG module is the slow internal clock source 32.768kHz
+         Core clock = 41.94MHz, BusClock = 41.94MHz
+   1 ... Multipurpose Clock Generator (MCG) in PLL Engaged External (PEE) mode
+         Reference clock source for MCG module is an external crystal 8MHz
+         Core clock = 48MHz, BusClock = 48MHz
+   2 ... Multipurpose Clock Generator (MCG) in Bypassed Low Power External (BLPE) mode
+         Core clock/Bus clock derived directly from an external crystal 8MHz with no multiplication
+         Core clock = 8MHz, BusClock = 8MHz
+*/
+
+/*----------------------------------------------------------------------------
+  Define clock source values
+ *----------------------------------------------------------------------------*/
+#if (CLOCK_SETUP == 0)
+    #define CPU_XTAL_CLK_HZ                 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */
+    #define CPU_XTAL32k_CLK_HZ              32768u   /* Value of the external 32k crystal or oscillator clock frequency in Hz */
+    #define CPU_INT_SLOW_CLK_HZ             32768u   /* Value of the slow internal oscillator clock frequency in Hz  */
+    #define CPU_INT_FAST_CLK_HZ             4000000u /* Value of the fast internal oscillator clock frequency in Hz  */
+    #define DEFAULT_SYSTEM_CLOCK            41943040u /* Default System clock value */
+#elif (CLOCK_SETUP == 1)
+    #define CPU_XTAL_CLK_HZ                 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */
+    #define CPU_XTAL32k_CLK_HZ              32768u   /* Value of the external 32k crystal or oscillator clock frequency in Hz */
+    #define CPU_INT_SLOW_CLK_HZ             32768u   /* Value of the slow internal oscillator clock frequency in Hz  */
+    #define CPU_INT_FAST_CLK_HZ             4000000u /* Value of the fast internal oscillator clock frequency in Hz  */
+    #define DEFAULT_SYSTEM_CLOCK            48000000u /* Default System clock value */
+#elif (CLOCK_SETUP == 2)
+    #define CPU_XTAL_CLK_HZ                 8000000u /* Value of the external crystal or oscillator clock frequency in Hz */
+    #define CPU_XTAL32k_CLK_HZ              32768u   /* Value of the external 32k crystal or oscillator clock frequency in Hz */
+    #define CPU_INT_SLOW_CLK_HZ             32768u   /* Value of the slow internal oscillator clock frequency in Hz  */
+    #define CPU_INT_FAST_CLK_HZ             4000000u /* Value of the fast internal oscillator clock frequency in Hz  */
+    #define DEFAULT_SYSTEM_CLOCK            8000000u /* Default System clock value */
+#elif (CLOCK_SETUP == 3)
+    /* for Infinity */
+    #define CPU_XTAL_CLK_HZ                 8000000u
+    #define CPU_XTAL32k_CLK_HZ              32768u
+    #define CPU_INT_SLOW_CLK_HZ             32768u
+    #define CPU_INT_FAST_CLK_HZ             4000000u
+    #define DEFAULT_SYSTEM_CLOCK            48000000u
+#endif
+
+
+/* ----------------------------------------------------------------------------
+   -- Core clock
+   ---------------------------------------------------------------------------- */
+
+uint32_t SystemCoreClock = DEFAULT_SYSTEM_CLOCK;
+
+/* ----------------------------------------------------------------------------
+   -- SystemInit()
+   ---------------------------------------------------------------------------- */
+
+void SystemInit (void) {
+#if (DISABLE_WDOG)
+  /* Disable the WDOG module */
+  /* WDOG_UNLOCK: WDOGUNLOCK=0xC520 */
+  WDOG->UNLOCK = (uint16_t)0xC520u;     /* Key 1 */
+  /* WDOG_UNLOCK : WDOGUNLOCK=0xD928 */
+  WDOG->UNLOCK  = (uint16_t)0xD928u;    /* Key 2 */
+  /* WDOG_STCTRLH: ??=0,DISTESTWDOG=0,BYTESEL=0,TESTSEL=0,TESTWDOG=0,??=0,STNDBYEN=1,WAITEN=1,STOPEN=1,DBGEN=0,ALLOWUPDATE=1,WINEN=0,IRQRSTEN=0,CLKSRC=1,WDOGEN=0 */
+  WDOG->STCTRLH = (uint16_t)0x01D2u;
+#endif /* (DISABLE_WDOG) */
+#if (CLOCK_SETUP == 0)
+  /* SIM->CLKDIV1: OUTDIV1=0,OUTDIV2=0,OUTDIV3=1,OUTDIV4=1,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0 */
+  SIM->CLKDIV1 = (uint32_t)0x00110000u; /* Update system prescalers */
+  /* Switch to FEI Mode */
+  /* MCG->C1: CLKS=0,FRDIV=0,IREFS=1,IRCLKEN=1,IREFSTEN=0 */
+  MCG->C1 = (uint8_t)0x06u;
+  /* MCG->C2: ??=0,??=0,RANGE0=0,HGO=0,EREFS=0,LP=0,IRCS=0 */
+  MCG->C2 = (uint8_t)0x00u;
+  /* MCG_C4: DMX32=0,DRST_DRS=1 */
+  MCG->C4 = (uint8_t)((MCG->C4 & (uint8_t)~(uint8_t)0xC0u) | (uint8_t)0x20u);
+  /* MCG->C5: ??=0,PLLCLKEN=0,PLLSTEN=0,PRDIV0=0 */
+  MCG->C5 = (uint8_t)0x00u;
+  /* MCG->C6: LOLIE=0,PLLS=0,CME=0,VDIV0=0 */
+  MCG->C6 = (uint8_t)0x00u;
+  while((MCG->S & MCG_S_IREFST_MASK) == 0u) { /* Check that the source of the FLL reference clock is the internal reference clock. */
+  }
+  while((MCG->S & 0x0Cu) != 0x00u) {    /* Wait until output of the FLL is selected */
+  }
+#elif (CLOCK_SETUP == 1)
+  /* SIM->CLKDIV1: OUTDIV1=0,OUTDIV2=0,OUTDIV3=1,OUTDIV4=1,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0 */
+  SIM->CLKDIV1 = (uint32_t)0x00110000u; /* Update system prescalers */
+  /* Switch to FBE Mode */
+  /* OSC0->CR: ERCLKEN=0,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */
+  OSC0->CR = (uint8_t)0x00u;
+  /* MCG->C7: OSCSEL=0 */
+  MCG->C7 = (uint8_t)0x00u;
+  /* MCG->C2: ??=0,??=0,RANGE0=2,HGO=0,EREFS=1,LP=0,IRCS=0 */
+  MCG->C2 = (uint8_t)0x24u;
+  /* MCG->C1: CLKS=2,FRDIV=3,IREFS=0,IRCLKEN=1,IREFSTEN=0 */
+  MCG->C1 = (uint8_t)0x9Au;
+  /* MCG->C4: DMX32=0,DRST_DRS=0 */
+  MCG->C4 &= (uint8_t)~(uint8_t)0xE0u;
+  /* MCG->C5: ??=0,PLLCLKEN=0,PLLSTEN=0,PRDIV0=3 */
+  MCG->C5 = (uint8_t)0x03u;
+  /* MCG->C6: LOLIE=0,PLLS=0,CME=0,VDIV0=0 */
+  MCG->C6 = (uint8_t)0x00u;
+  while((MCG->S & MCG_S_OSCINIT0_MASK) == 0u) { /* Check that the oscillator is running */
+  }
+#if 0 /* ARM: THIS CHECK IS REMOVED DUE TO BUG WITH SLOW IRC IN REV. 1.0 */
+  while((MCG->S & MCG_S_IREFST_MASK) != 0u) { /* Check that the source of the FLL reference clock is the external reference clock. */
+  }
+#endif
+  while((MCG->S & 0x0Cu) != 0x08u) {    /* Wait until external reference clock is selected as MCG output */
+  }
+  /* Switch to PBE Mode */
+  /* MCG_C5: ??=0,PLLCLKEN=0,PLLSTEN=0,PRDIV0=3 */
+  MCG->C5 = (uint8_t)0x03u;
+  /* MCG->C6: LOLIE=0,PLLS=1,CME=0,VDIV0=0 */
+  MCG->C6 = (uint8_t)0x40u;
+  while((MCG->S & MCG_S_PLLST_MASK) == 0u) { /* Wait until the source of the PLLS clock has switched to the PLL */
+  }
+  while((MCG->S & MCG_S_LOCK0_MASK) == 0u) { /* Wait until locked */
+  }
+  /* Switch to PEE Mode */
+  /* MCG->C1: CLKS=0,FRDIV=3,IREFS=0,IRCLKEN=1,IREFSTEN=0 */
+  MCG->C1 = (uint8_t)0x1Au;
+  while((MCG->S & 0x0Cu) != 0x0Cu) {    /* Wait until output of the PLL is selected */
+  }
+  while((MCG->S & MCG_S_LOCK0_MASK) == 0u) { /* Wait until locked */
+  }
+#elif (CLOCK_SETUP == 2)
+  /* SIM_CLKDIV1: OUTDIV1=0,OUTDIV2=0,OUTDIV3=1,OUTDIV4=1,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0,??=0 */
+  SIM->CLKDIV1 = (uint32_t)0x00110000u; /* Update system prescalers */
+  /* Switch to FBE Mode */
+  /* OSC0->CR: ERCLKEN=0,??=0,EREFSTEN=0,??=0,SC2P=0,SC4P=0,SC8P=0,SC16P=0 */
+  OSC0->CR = (uint8_t)0x00u;
+  /* MCG->C7: OSCSEL=0 */
+  MCG->C7 = (uint8_t)0x00u;
+  /* MCG->C2: ??=0,??=0,RANGE0=2,HGO=0,EREFS=1,LP=0,IRCS=0 */
+  MCG->C2 = (uint8_t)0x24u;
+  /* MCG->C1: CLKS=2,FRDIV=3,IREFS=0,IRCLKEN=1,IREFSTEN=0 */
+  MCG->C1 = (uint8_t)0x9Au;
+  /* MCG->C4: DMX32=0,DRST_DRS=0 */
+  MCG->C4 &= (uint8_t)~(uint8_t)0xE0u;
+  /* MCG->C5: ??=0,PLLCLKEN=0,PLLSTEN=0,PRDIV0=0 */
+  MCG->C5 = (uint8_t)0x00u;
+  /* MCG->C6: LOLIE=0,PLLS=0,CME=0,VDIV0=0 */
+  MCG->C6 = (uint8_t)0x00u;
+  while((MCG->S & MCG_S_OSCINIT0_MASK) == 0u) { /* Check that the oscillator is running */
+  }
+#if 0 /* ARM: THIS CHECK IS REMOVED DUE TO BUG WITH SLOW IRC IN REV. 1.0 */
+  while((MCG->S & MCG_S_IREFST_MASK) != 0u) { /* Check that the source of the FLL reference clock is the external reference clock. */
+  }
+#endif
+  while((MCG->S & 0x0CU) != 0x08u) {    /* Wait until external reference clock is selected as MCG output */
+  }
+  /* Switch to BLPE Mode */
+  /* MCG->C2: ??=0,??=0,RANGE0=2,HGO=0,EREFS=1,LP=0,IRCS=0 */
+  MCG->C2 = (uint8_t)0x24u;
+
+#elif (CLOCK_SETUP == 3)
+  /* for Infinity FEI: 48MHz */
+
+  /* OUTDIV1(core/system): 48/1, OUTDIV2(bus): 48/1, OUTDIV4(flash): 48/2 */
+  SIM->CLKDIV1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(0) | SIM_CLKDIV1_OUTDIV4(1);
+  MCG->C1 = MCG_C1_IREFS_MASK | MCG_C1_IRCLKEN_MASK;
+  /* 32.768KHz x FLL(1464) = 48MHz */
+  MCG->C4 = MCG_C4_DMX32_MASK | MCG_C4_DRST_DRS(1);
+  /* USB clock source: MCGPLLCLK/MCGFLLCLK */
+  //SIM->SOPT2 = SIM_SOPT2_USBSRC_MASK | SIM_SOPT2_TRACECLKSEL_MASK;
+
+  while((MCG->S & MCG_S_IREFST_MASK) == 0u) { }
+  while((MCG->S & 0x0Cu) != 0x00u) { }
+#endif
+}
+
+/* ----------------------------------------------------------------------------
+   -- SystemCoreClockUpdate()
+   ---------------------------------------------------------------------------- */
+
+void SystemCoreClockUpdate (void) {
+  uint32_t MCGOUTClock;                                                        /* Variable to store output clock frequency of the MCG module */
+  uint8_t Divider;
+
+  if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x0u) {
+    /* Output of FLL or PLL is selected */
+    if ((MCG->C6 & MCG_C6_PLLS_MASK) == 0x0u) {
+      /* FLL is selected */
+      if ((MCG->C1 & MCG_C1_IREFS_MASK) == 0x0u) {
+        /* External reference clock is selected */
+        if ((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u) {
+          MCGOUTClock = CPU_XTAL_CLK_HZ;                                       /* System oscillator drives MCG clock */
+        } else { /* (!((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u)) */
+          MCGOUTClock = CPU_XTAL32k_CLK_HZ;                                    /* RTC 32 kHz oscillator drives MCG clock */
+        } /* (!((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u)) */
+        Divider = (uint8_t)(1u << ((MCG->C1 & MCG_C1_FRDIV_MASK) >> MCG_C1_FRDIV_SHIFT));
+        MCGOUTClock = (MCGOUTClock / Divider);  /* Calculate the divided FLL reference clock */
+        if ((MCG->C2 & MCG_C2_RANGE0_MASK) != 0x0u) {
+          MCGOUTClock /= 32u;                                                  /* If high range is enabled, additional 32 divider is active */
+        } /* ((MCG->C2 & MCG_C2_RANGE0_MASK) != 0x0u) */
+      } else { /* (!((MCG->C1 & MCG_C1_IREFS_MASK) == 0x0u)) */
+        MCGOUTClock = CPU_INT_SLOW_CLK_HZ;                                     /* The slow internal reference clock is selected */
+      } /* (!((MCG->C1 & MCG_C1_IREFS_MASK) == 0x0u)) */
+      /* Select correct multiplier to calculate the MCG output clock  */
+      switch (MCG->C4 & (MCG_C4_DMX32_MASK | MCG_C4_DRST_DRS_MASK)) {
+        case 0x0u:
+          MCGOUTClock *= 640u;
+          break;
+        case 0x20u:
+          MCGOUTClock *= 1280u;
+          break;
+        case 0x40u:
+          MCGOUTClock *= 1920u;
+          break;
+        case 0x60u:
+          MCGOUTClock *= 2560u;
+          break;
+        case 0x80u:
+          MCGOUTClock *= 732u;
+          break;
+        case 0xA0u:
+          MCGOUTClock *= 1464u;
+          break;
+        case 0xC0u:
+          MCGOUTClock *= 2197u;
+          break;
+        case 0xE0u:
+          MCGOUTClock *= 2929u;
+          break;
+        default:
+          break;
+      }
+    } else { /* (!((MCG->C6 & MCG_C6_PLLS_MASK) == 0x0u)) */
+      /* PLL is selected */
+      Divider = (1u + (MCG->C5 & MCG_C5_PRDIV0_MASK));
+      MCGOUTClock = (uint32_t)(CPU_XTAL_CLK_HZ / Divider);                     /* Calculate the PLL reference clock */
+      Divider = ((MCG->C6 & MCG_C6_VDIV0_MASK) + 24u);
+      MCGOUTClock *= Divider;                       /* Calculate the MCG output clock */
+    } /* (!((MCG->C6 & MCG_C6_PLLS_MASK) == 0x0u)) */
+  } else if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x40u) {
+    /* Internal reference clock is selected */
+    if ((MCG->C2 & MCG_C2_IRCS_MASK) == 0x0u) {
+      MCGOUTClock = CPU_INT_SLOW_CLK_HZ;                                       /* Slow internal reference clock selected */
+    } else { /* (!((MCG->C2 & MCG_C2_IRCS_MASK) == 0x0u)) */
+      MCGOUTClock = CPU_INT_FAST_CLK_HZ / (1 << ((MCG->SC & MCG_SC_FCRDIV_MASK) >> MCG_SC_FCRDIV_SHIFT));  /* Fast internal reference clock selected */
+    } /* (!((MCG->C2 & MCG_C2_IRCS_MASK) == 0x0u)) */
+  } else if ((MCG->C1 & MCG_C1_CLKS_MASK) == 0x80u) {
+    /* External reference clock is selected */
+    if ((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u) {
+      MCGOUTClock = CPU_XTAL_CLK_HZ;                                           /* System oscillator drives MCG clock */
+    } else { /* (!((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u)) */
+      MCGOUTClock = CPU_XTAL32k_CLK_HZ;                                        /* RTC 32 kHz oscillator drives MCG clock */
+    } /* (!((MCG->C7 & MCG_C7_OSCSEL_MASK) == 0x0u)) */
+  } else { /* (!((MCG->C1 & MCG_C1_CLKS_MASK) == 0x80u)) */
+    /* Reserved value */
+    return;
+  } /* (!((MCG->C1 & MCG_C1_CLKS_MASK) == 0x80u)) */
+  SystemCoreClock = (MCGOUTClock / (1u + ((SIM->CLKDIV1 & SIM_CLKDIV1_OUTDIV1_MASK) >> SIM_CLKDIV1_OUTDIV1_SHIFT)));
+}
diff --git a/keyboard/infinity/tool/README b/keyboard/infinity/tool/README
new file mode 100644
index 0000000000..3dd3316568
--- /dev/null
+++ b/keyboard/infinity/tool/README
@@ -0,0 +1,25 @@
+OpenOCD config files for Kinetis 
+================================
+http://nemuisan.blog.bai.ne.jp/?eid=192848#OPENOCD
+
+These are needed for SWD debug and programing bootloader. To flash keyboard firmware use 'dfu-util'.
+
+Flash security of Freescale kinetis
+-----------------------------------
+If FSEC of flash config is changed accidentally SWD/JTAG you can't get debug access until doing 'mdm mass_erase' with JTAG, CMSIS-DAP or OpenSAD adapter. HLA(high level adapter) like stlink doesn't work for this.
+
+
+Example
+-------
+Debug:
+    $ openocd -s tool -f tool/openocd.cfg
+    $ arm-none-eabi-gdb build/infinity.elf -ex "target remote localhost:3333"
+
+Flash bootloader:
+    $ openocd -s tool -f tool/openocd.cfg -c "mt_flash kiibohd_bootloader.bin"
+
+
+Infinity SWD pinout
+-------------------
+SWD pins are placed next to reset button; SWD_CLK, SWD_DIO, GND, VCC from top.
+Note that RESET is also needed to get full control with OpenOCD.
diff --git a/keyboard/infinity/tool/k20dx32_flash.cfg b/keyboard/infinity/tool/k20dx32_flash.cfg
new file mode 100644
index 0000000000..714d9991f8
--- /dev/null
+++ b/keyboard/infinity/tool/k20dx32_flash.cfg
@@ -0,0 +1,124 @@
+# FreeScale Kinetis K20 devices with 32kB Flash and 8kB Local On-Chip SRAM,
+# Nemuisan's Special for MK20DN32VFT5,MK20DX32VFT5,MK10DN32VFT5,MK10DX32VFT5
+
+
+source [find target/swj-dp.tcl]
+
+if { [info exists CHIPNAME] } {
+    set _CHIPNAME $CHIPNAME
+} else {
+    set _CHIPNAME k20
+}
+
+if { [info exists ENDIAN] } {
+    set _ENDIAN $ENDIAN
+} else {
+    set _ENDIAN little
+}
+
+if { [info exists CPUTAPID] } {
+   set _CPUTAPID $CPUTAPID
+} else {
+   if { [using_jtag] } {
+      set _CPUTAPID 0x4BA00477
+   } {
+      # this is the SW-DP tap id not the jtag tap id
+      set _CPUTAPID 0x2BA01477
+   }
+}
+
+# Work-area is a space in RAM used for flash programming
+# By default use 8kB
+if { [info exists WORKAREASIZE] == 0 } {
+   set _WORKAREASIZE 0x2000
+}
+
+# Select "srst_only", Nemuisan said so!
+echo "Kinetis MUST need Hardware SRST Control to Recover Secure-State!"
+adapter_nsrst_delay 200
+reset_config srst_only
+
+swj_newdap $_CHIPNAME cpu -irlen 4 -expected-id $_CPUTAPID
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME cortex_m -chain-position $_TARGETNAME
+
+# It is important that "kinetis mdm check_security" is called for
+# 'examine-end' event and not 'eximine-start'. Calling it in 'examine-start'
+# causes "kinetis mdm check_security" to fail the first time openocd
+# calls it when it tries to connect after the CPU has been power-cycled.
+$_CHIPNAME.cpu configure -event examine-end {
+	kinetis mdm check_security
+# Uncomment when gone into s*ck'n secured state!
+#	kinetis mdm mass_erase
+}
+
+# K20 has minimun 8kB of SRAM and starts at 1FFFF000.
+$_TARGETNAME configure -work-area-phys 0x1FFFF000 -work-area-size $_WORKAREASIZE -work-area-backup 0 -rtos auto
+
+# MK20DN32VFT5,MK20DX32VFT5,MK10DN32VFT5,MK10DX32VFT5 has 32kB of flash memory.
+flash bank $_CHIPNAME.pflash kinetis 0x00000000 0x8000 0 4 $_TARGETNAME
+
+
+proc mt_flash {IMGFILE} {
+	flash write_image erase $IMGFILE
+	reset run
+	halt
+	verify_image $IMGFILE
+	reset run
+	shutdown
+}
+
+proc mt_flash_bin {IMGFILE OFFSET} {
+	flash write_image erase $IMGFILE $OFFSET bin
+	reset run
+	halt
+	verify_image $IMGFILE $OFFSET bin
+	reset run
+	shutdown
+}
+
+proc mt_flash_hex {IMGFILE} {
+	flash write_image erase $IMGFILE 0 ihex
+	reset run
+	halt
+	verify_image $IMGFILE 0 ihex
+	reset run
+	shutdown
+}
+
+proc mt_flash_srec {IMGFILE} {
+	flash write_image erase $IMGFILE 0 s19
+	reset run
+	halt
+	verify_image $IMGFILE 0 s19
+	reset run
+	shutdown
+}
+
+proc mass_erase {} {
+	kinetis mdm mass_erase
+}
+
+proc eraser {} {
+# Verbose procedure confirmed erase routine
+	flash info 0
+# CAUTION! "flash erase_sector 0 0 last" goes into secure state!!!
+# USE "mass_erase" command instead of
+#	flash erase_sector 0 0 last
+	mass_erase
+	shutdown
+}
+
+
+#debug_level 3
+# HLA doesn't have cortex_m commands 
+if {![using_hla]} {
+   # if srst is not fitted use SYSRESETREQ to
+   # perform a soft reset
+   cortex_m reset_config sysresetreq
+}
+adapter_khz 1000
+reset_config srst_only srst_nogate connect_assert_srst
+gdb_target_description disable
+init
+reset init
diff --git a/keyboard/infinity/tool/openocd.cfg b/keyboard/infinity/tool/openocd.cfg
new file mode 100644
index 0000000000..2b0a63b933
--- /dev/null
+++ b/keyboard/infinity/tool/openocd.cfg
@@ -0,0 +1,13 @@
+# mchack openocd
+# https://github.com/mchck/mchck/wiki/Openocd
+#
+# adapter: frdm-kl05z with cmsis-dap firmware
+# inteface: cmsis-dap
+# transport: hla_swd
+# target: MK20DX128VLF5 Freescale Kinetis
+
+# adapter/interface
+source [find interface/cmsis-dap.cfg]
+
+# CPU
+source [find k20dx32_flash.cfg]