Merge remote-tracking branch 'origin/master' into iso_split_rshift

update from Upstream

10 files changed, 1848 insertions, 0 deletions

diff --git a/keyboards/ergodox/ez/190hotfix.sh b/keyboards/ergodox/ez/190hotfix.sh
new file mode 100755
index 0000000000..bdc3adce22
--- /dev/null
+++ b/keyboards/ergodox/ez/190hotfix.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+#a tool to fix broken keymaps as a result of pull request #190 
+#changing the declaration of matrix_scan_user() and matrix_init_user()
+#
+#This script will save a copy of the specified keymap as keymap.c.bak
+#and then create a new keymap.c with the definion corrected.
+#this script must be run from the ergodox_ez directory
+if [ $# -ne 1 ]; then
+    echo $0: usage: ./190hotfix keymap_name
+    exit 1
+fi
+
+echo Saving backup as ./keymaps/$1/keymap.c.bak ...
+mv ./keymaps/$1/keymap.c ./keymaps/$1/keymap.c.bak
+
+echo Modifying ./keymaps/$1/keymap.c ...
+cat ./keymaps/$1/keymap.c.bak | sed -r 's/^void \* matrix_/void matrix_/'>./keymaps/$1/keymap.c
+
+echo Complete!
diff --git a/keyboards/ergodox/ez/Makefile b/keyboards/ergodox/ez/Makefile
new file mode 100644
index 0000000000..37e554b304
--- /dev/null
+++ b/keyboards/ergodox/ez/Makefile
@@ -0,0 +1,76 @@
+#----------------------------------------------------------------------------
+# On command line:
+#
+# make = Make software.
+#
+# make clean = Clean out built project files.
+#
+# That's pretty much all you need. To compile, always go make clean, 
+# followed by make.
+#
+# For advanced users only:
+# make teensy = Download the hex file to the device, using teensy_loader_cli.
+#               (must have teensy_loader_cli installed).
+#
+#----------------------------------------------------------------------------
+
+# # project specific files
+SRC = twimaster.c \
+	  matrix.c
+
+# MCU name
+MCU = atmega32u4
+
+# Processor frequency.
+#     This will define a symbol, F_CPU, in all source code files equal to the
+#     processor frequency in Hz. You can then use this symbol in your source code to
+#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+#     automatically to create a 32-bit value in your source code.
+#
+#     This will be an integer division of F_USB below, as it is sourced by
+#     F_USB after it has run through any CPU prescalers. Note that this value
+#     does not *change* the processor frequency - it should merely be updated to
+#     reflect the processor speed set externally so that the code can use accurate
+#     software delays.
+F_CPU = 16000000
+
+
+#
+# LUFA specific
+#
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+#     This will define a symbol, F_USB, in all source code files equal to the
+#     input clock frequency (before any prescaling is performed) in Hz. This value may
+#     differ from F_CPU if prescaling is used on the latter, and is required as the
+#     raw input clock is fed directly to the PLL sections of the AVR for high speed
+#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+#     at the end, this will be done automatically to create a 32-bit value in your
+#     source code.
+#
+#     If no clock division is performed on the input clock inside the AVR (via the
+#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+
+# Boot Section Size in *bytes*
+#   Teensy halfKay   512
+#   Teensy++ halfKay 1024
+#   Atmel DFU loader 4096
+#   LUFA bootloader  4096
+#   USBaspLoader     2048
+OPT_DEFS += -DBOOTLOADER_SIZE=512
+
+
+# Build Options
+#   comment out to disable the options.
+#
+
+ifndef QUANTUM_DIR
+	include ../../../Makefile
+endif
diff --git a/keyboards/ergodox/ez/config.h b/keyboards/ergodox/ez/config.h
new file mode 100644
index 0000000000..084a044ee1
--- /dev/null
+++ b/keyboards/ergodox/ez/config.h
@@ -0,0 +1,65 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2013 Oleg Kostyuk <cub.uanic@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 ERGODOX_EZ_CONFIG_H
+#define ERGODOX_EZ_CONFIG_H
+
+#include "../config.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x1307
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    ErgoDox EZ
+#define PRODUCT         ErgoDox EZ
+#define DESCRIPTION     QMK keyboard firmware for Ergodox EZ
+
+/* key matrix size */
+#define MATRIX_ROWS 14
+#define MATRIX_COLS 6
+
+/* number of backlight levels */
+#define BACKLIGHT_LEVELS 3
+
+#define LED_BRIGHTNESS_LO       15
+#define LED_BRIGHTNESS_HI       255
+
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCE    5
+
+/*
+ * Feature disable options
+ *  These options are also useful to firmware size reduction.
+ */
+
+/* disable debug print */
+// #define NO_DEBUG
+
+/* disable print */
+// #define NO_PRINT
+
+/* disable action features */
+//#define NO_ACTION_LAYER
+//#define NO_ACTION_TAPPING
+//#define NO_ACTION_ONESHOT
+//#define NO_ACTION_MACRO
+//#define NO_ACTION_FUNCTION
+//#define DEBUG_MATRIX_SCAN_RATE
+
+#endif
diff --git a/keyboards/ergodox/ez/ez.c b/keyboards/ergodox/ez/ez.c
new file mode 100644
index 0000000000..e7afc98590
--- /dev/null
+++ b/keyboards/ergodox/ez/ez.c
@@ -0,0 +1,85 @@
+#include "ez.h"
+#include "i2cmaster.h"
+
+bool i2c_initialized = 0;
+uint8_t mcp23018_status = 0x20;
+
+void matrix_init_kb(void) {
+   // keyboard LEDs (see "PWM on ports OC1(A|B|C)" in "teensy-2-0.md")
+    TCCR1A = 0b10101001;  // set and configure fast PWM
+    TCCR1B = 0b00001001;  // set and configure fast PWM
+
+    // (tied to Vcc for hardware convenience)
+    DDRB  &= ~(1<<4);  // set B(4) as input
+    PORTB &= ~(1<<4);  // set B(4) internal pull-up disabled
+
+    // unused pins - C7, D4, D5, D7, E6
+    // set as input with internal pull-ip enabled
+    DDRC  &= ~(1<<7);
+    DDRD  &= ~(1<<7 | 1<<5 | 1<<4);
+    DDRE  &= ~(1<<6);
+    PORTC |=  (1<<7);
+    PORTD |=  (1<<7 | 1<<5 | 1<<4);
+    PORTE |=  (1<<6);
+
+    ergodox_blink_all_leds();
+
+    matrix_init_user();
+}
+
+void ergodox_blink_all_leds(void)
+{
+    ergodox_led_all_off();
+    ergodox_led_all_set(LED_BRIGHTNESS_HI);
+    ergodox_right_led_1_on();
+    _delay_ms(50);
+    ergodox_right_led_2_on();
+    _delay_ms(50);
+    ergodox_right_led_3_on();
+    _delay_ms(50);
+    ergodox_right_led_1_off();
+    _delay_ms(50);
+    ergodox_right_led_2_off();
+    _delay_ms(50);
+    ergodox_right_led_3_off();
+    //ergodox_led_all_on();
+    //_delay_ms(333);
+    ergodox_led_all_off();
+}
+
+uint8_t init_mcp23018(void) {
+    mcp23018_status = 0x20;
+
+    // I2C subsystem
+    if (i2c_initialized == 0) {
+        i2c_init();  // on pins D(1,0)
+        i2c_initialized++;
+        _delay_ms(1000);
+    }
+
+    // set pin direction
+    // - unused  : input  : 1
+    // - input   : input  : 1
+    // - driving : output : 0
+    mcp23018_status = i2c_start(I2C_ADDR_WRITE);    if (mcp23018_status) goto out;
+    mcp23018_status = i2c_write(IODIRA);            if (mcp23018_status) goto out;
+    mcp23018_status = i2c_write(0b00000000);        if (mcp23018_status) goto out;
+    mcp23018_status = i2c_write(0b00111111);        if (mcp23018_status) goto out;
+    i2c_stop();
+
+    // set pull-up
+    // - unused  : on  : 1
+    // - input   : on  : 1
+    // - driving : off : 0
+    mcp23018_status = i2c_start(I2C_ADDR_WRITE);    if (mcp23018_status) goto out;
+    mcp23018_status = i2c_write(GPPUA);             if (mcp23018_status) goto out;
+    mcp23018_status = i2c_write(0b00000000);        if (mcp23018_status) goto out;
+    mcp23018_status = i2c_write(0b00111111);        if (mcp23018_status) goto out;
+
+out:
+    i2c_stop();
+
+    return mcp23018_status;
+}
+
+
diff --git a/keyboards/ergodox/ez/ez.h b/keyboards/ergodox/ez/ez.h
new file mode 100644
index 0000000000..db4ec867bc
--- /dev/null
+++ b/keyboards/ergodox/ez/ez.h
@@ -0,0 +1,122 @@
+#ifndef ERGODOX_EZ_H
+#define ERGODOX_EZ_H
+
+#include "quantum.h"
+#include <stdint.h>
+#include <stdbool.h>
+#include "i2cmaster.h"
+#include <util/delay.h>
+
+#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
+#define CPU_16MHz       0x00
+
+// I2C aliases and register addresses (see "mcp23018.md")
+#define I2C_ADDR        0b0100000
+#define I2C_ADDR_WRITE  ( (I2C_ADDR<<1) | I2C_WRITE )
+#define I2C_ADDR_READ   ( (I2C_ADDR<<1) | I2C_READ  )
+#define IODIRA          0x00            // i/o direction register
+#define IODIRB          0x01
+#define GPPUA           0x0C            // GPIO pull-up resistor register
+#define GPPUB           0x0D
+#define GPIOA           0x12            // general purpose i/o port register (write modifies OLAT)
+#define GPIOB           0x13
+#define OLATA           0x14            // output latch register
+#define OLATB           0x15
+
+extern uint8_t mcp23018_status;
+
+void init_ergodox(void);
+void ergodox_blink_all_leds(void);
+uint8_t init_mcp23018(void);
+uint8_t ergodox_left_leds_update(void);
+
+#define LED_BRIGHTNESS_LO       15
+#define LED_BRIGHTNESS_HI       255
+
+
+inline void ergodox_board_led_on(void)      { DDRD |=  (1<<6); PORTD |=  (1<<6); }
+inline void ergodox_right_led_1_on(void)    { DDRB |=  (1<<5); PORTB |=  (1<<5); }
+inline void ergodox_right_led_2_on(void)    { DDRB |=  (1<<6); PORTB |=  (1<<6); }
+inline void ergodox_right_led_3_on(void)    { DDRB |=  (1<<7); PORTB |=  (1<<7); }
+inline void ergodox_right_led_on(uint8_t led) { DDRB |= (1<<(led+4)); PORTB |= (1<<(led+4)); }
+
+inline void ergodox_board_led_off(void)     { DDRD &= ~(1<<6); PORTD &= ~(1<<6); }
+inline void ergodox_right_led_1_off(void)   { DDRB &= ~(1<<5); PORTB &= ~(1<<5); }
+inline void ergodox_right_led_2_off(void)   { DDRB &= ~(1<<6); PORTB &= ~(1<<6); }
+inline void ergodox_right_led_3_off(void)   { DDRB &= ~(1<<7); PORTB &= ~(1<<7); }
+inline void ergodox_right_led_off(uint8_t led) { DDRB &= ~(1<<(led+4)); PORTB &= ~(1<<(led+4)); }
+
+inline void ergodox_led_all_on(void)
+{
+    ergodox_board_led_on();
+    ergodox_right_led_1_on();
+    ergodox_right_led_2_on();
+    ergodox_right_led_3_on();
+}
+
+inline void ergodox_led_all_off(void)
+{
+    ergodox_board_led_off();
+    ergodox_right_led_1_off();
+    ergodox_right_led_2_off();
+    ergodox_right_led_3_off();
+}
+
+inline void ergodox_right_led_1_set(uint8_t n)    { OCR1A = n; }
+inline void ergodox_right_led_2_set(uint8_t n)    { OCR1B = n; }
+inline void ergodox_right_led_3_set(uint8_t n)    { OCR1C = n; }
+inline void ergodox_right_led_set(uint8_t led, uint8_t n)  {
+    (led == 1) ? (OCR1A = n) :
+    (led == 2) ? (OCR1B = n) :
+                 (OCR1C = n);
+}
+
+inline void ergodox_led_all_set(uint8_t n)
+{
+    ergodox_right_led_1_set(n);
+    ergodox_right_led_2_set(n);
+    ergodox_right_led_3_set(n);
+}
+
+#define KEYMAP(                                                 \
+                                                                \
+    /* left hand, spatial positions */                          \
+    k00,k01,k02,k03,k04,k05,k06,                                \
+    k10,k11,k12,k13,k14,k15,k16,                                \
+    k20,k21,k22,k23,k24,k25,                                    \
+    k30,k31,k32,k33,k34,k35,k36,                                \
+    k40,k41,k42,k43,k44,                                        \
+                            k55,k56,                            \
+                                k54,                            \
+                        k53,k52,k51,                            \
+                                                                \
+    /* right hand, spatial positions */                         \
+        k07,k08,k09,k0A,k0B,k0C,k0D,                            \
+        k17,k18,k19,k1A,k1B,k1C,k1D,                            \
+            k28,k29,k2A,k2B,k2C,k2D,                            \
+        k37,k38,k39,k3A,k3B,k3C,k3D,                            \
+                k49,k4A,k4B,k4C,k4D,                            \
+    k57,k58,                                                    \
+    k59,                                                        \
+    k5C,k5B,k5A )                                               \
+                                                                \
+   /* matrix positions */                                       \
+   {                                                            \
+    { k00, k10, k20, k30, k40, KC_NO },   \
+    { k01, k11, k21, k31, k41, k51 },   \
+    { k02, k12, k22, k32, k42, k52 },   \
+    { k03, k13, k23, k33, k43, k53 },   \
+    { k04, k14, k24, k34, k44, k54 },   \
+    { k05, k15, k25, k35, KC_NO, k55 },   \
+    { k06, k16, KC_NO, k36, KC_NO, k56 },   \
+                                                                 \
+    { k07, k17, KC_NO, k37,KC_NO, k57 },   \
+    { k08, k18, k28, k38,KC_NO, k58 },   \
+    { k09, k19, k29, k39, k49, k59 },   \
+    { k0A, k1A, k2A, k3A, k4A, k5A },   \
+    { k0B, k1B, k2B, k3B, k4B, k5B },   \
+    { k0C, k1C, k2C, k3C, k4C, k5C },   \
+    { k0D, k1D, k2D, k3D, k4D, KC_NO }    \
+   }
+
+#endif
diff --git a/keyboards/ergodox/ez/i2cmaster.h b/keyboards/ergodox/ez/i2cmaster.h
new file mode 100644
index 0000000000..3917b9e6c0
--- /dev/null
+++ b/keyboards/ergodox/ez/i2cmaster.h
@@ -0,0 +1,178 @@
+#ifndef _I2CMASTER_H
+#define _I2CMASTER_H   1
+/************************************************************************* 
+* Title:    C include file for the I2C master interface 
+*           (i2cmaster.S or twimaster.c)
+* Author:   Peter Fleury <pfleury@gmx.ch>  http://jump.to/fleury
+* File:     $Id: i2cmaster.h,v 1.10 2005/03/06 22:39:57 Peter Exp $
+* Software: AVR-GCC 3.4.3 / avr-libc 1.2.3
+* Target:   any AVR device
+* Usage:    see Doxygen manual
+**************************************************************************/
+
+#ifdef DOXYGEN
+/**
+ @defgroup pfleury_ic2master I2C Master library
+ @code #include <i2cmaster.h> @endcode
+  
+ @brief I2C (TWI) Master Software Library
+
+ Basic routines for communicating with I2C slave devices. This single master 
+ implementation is limited to one bus master on the I2C bus. 
+
+ This I2c library is implemented as a compact assembler software implementation of the I2C protocol 
+ which runs on any AVR (i2cmaster.S) and as a TWI hardware interface for all AVR with built-in TWI hardware (twimaster.c).
+ Since the API for these two implementations is exactly the same, an application can be linked either against the
+ software I2C implementation or the hardware I2C implementation.
+
+ Use 4.7k pull-up resistor on the SDA and SCL pin.
+ 
+ Adapt the SCL and SDA port and pin definitions and eventually the delay routine in the module 
+ i2cmaster.S to your target when using the software I2C implementation ! 
+ 
+ Adjust the  CPU clock frequence F_CPU in twimaster.c or in the Makfile when using the TWI hardware implementaion.
+
+ @note 
+    The module i2cmaster.S is based on the Atmel Application Note AVR300, corrected and adapted 
+    to GNU assembler and AVR-GCC C call interface.
+    Replaced the incorrect quarter period delays found in AVR300 with 
+    half period delays. 
+    
+ @author Peter Fleury pfleury@gmx.ch  http://jump.to/fleury
+
+ @par API Usage Example
+  The following code shows typical usage of this library, see example test_i2cmaster.c
+
+ @code
+
+ #include <i2cmaster.h>
+
+
+ #define Dev24C02  0xA2      // device address of EEPROM 24C02, see datasheet
+
+ int main(void)
+ {
+     unsigned char ret;
+
+     i2c_init();                             // initialize I2C library
+
+     // write 0x75 to EEPROM address 5 (Byte Write) 
+     i2c_start_wait(Dev24C02+I2C_WRITE);     // set device address and write mode
+     i2c_write(0x05);                        // write address = 5
+     i2c_write(0x75);                        // write value 0x75 to EEPROM
+     i2c_stop();                             // set stop conditon = release bus
+
+
+     // read previously written value back from EEPROM address 5 
+     i2c_start_wait(Dev24C02+I2C_WRITE);     // set device address and write mode
+
+     i2c_write(0x05);                        // write address = 5
+     i2c_rep_start(Dev24C02+I2C_READ);       // set device address and read mode
+
+     ret = i2c_readNak();                    // read one byte from EEPROM
+     i2c_stop();
+
+     for(;;);
+ }
+ @endcode
+
+*/
+#endif /* DOXYGEN */
+
+/**@{*/
+
+#if (__GNUC__ * 100 + __GNUC_MINOR__) < 304
+#error "This library requires AVR-GCC 3.4 or later, update to newer AVR-GCC compiler !"
+#endif
+
+#include <avr/io.h>
+
+/** defines the data direction (reading from I2C device) in i2c_start(),i2c_rep_start() */
+#define I2C_READ    1
+
+/** defines the data direction (writing to I2C device) in i2c_start(),i2c_rep_start() */
+#define I2C_WRITE   0
+
+
+/**
+ @brief initialize the I2C master interace. Need to be called only once 
+ @param  void
+ @return none
+ */
+extern void i2c_init(void);
+
+
+/** 
+ @brief Terminates the data transfer and releases the I2C bus 
+ @param void
+ @return none
+ */
+extern void i2c_stop(void);
+
+
+/** 
+ @brief Issues a start condition and sends address and transfer direction 
+  
+ @param    addr address and transfer direction of I2C device
+ @retval   0   device accessible 
+ @retval   1   failed to access device 
+ */
+extern unsigned char i2c_start(unsigned char addr);
+
+
+/**
+ @brief Issues a repeated start condition and sends address and transfer direction 
+
+ @param   addr address and transfer direction of I2C device
+ @retval  0 device accessible
+ @retval  1 failed to access device
+ */
+extern unsigned char i2c_rep_start(unsigned char addr);
+
+
+/**
+ @brief Issues a start condition and sends address and transfer direction 
+   
+ If device is busy, use ack polling to wait until device ready 
+ @param    addr address and transfer direction of I2C device
+ @return   none
+ */
+extern void i2c_start_wait(unsigned char addr);
+
+ 
+/**
+ @brief Send one byte to I2C device
+ @param    data  byte to be transfered
+ @retval   0 write successful
+ @retval   1 write failed
+ */
+extern unsigned char i2c_write(unsigned char data);
+
+
+/**
+ @brief    read one byte from the I2C device, request more data from device 
+ @return   byte read from I2C device
+ */
+extern unsigned char i2c_readAck(void);
+
+/**
+ @brief    read one byte from the I2C device, read is followed by a stop condition 
+ @return   byte read from I2C device
+ */
+extern unsigned char i2c_readNak(void);
+
+/** 
+ @brief    read one byte from the I2C device
+ 
+ Implemented as a macro, which calls either i2c_readAck or i2c_readNak
+ 
+ @param    ack 1 send ack, request more data from device<br>
+               0 send nak, read is followed by a stop condition 
+ @return   byte read from I2C device
+ */
+extern unsigned char i2c_read(unsigned char ack);
+#define i2c_read(ack)  (ack) ? i2c_readAck() : i2c_readNak(); 
+
+
+/**@}*/
+#endif
diff --git a/keyboards/ergodox/ez/matrix.c b/keyboards/ergodox/ez/matrix.c
new file mode 100644
index 0000000000..a19bab90b2
--- /dev/null
+++ b/keyboards/ergodox/ez/matrix.c
@@ -0,0 +1,382 @@
+/*
+
+Note for ErgoDox EZ customizers: Here be dragons!
+This is not a file you want to be messing with.
+All of the interesting stuff for you is under keymaps/ :)
+Love, Erez
+
+Copyright 2013 Oleg Kostyuk <cub.uanic@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/>.
+*/
+
+/*
+ * scan matrix
+ */
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include "wait.h"
+#include "action_layer.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#include "ez.h"
+#include "i2cmaster.h"
+#ifdef DEBUG_MATRIX_SCAN_RATE
+#include  "timer.h"
+#endif
+
+/*
+ * This constant define not debouncing time in msecs, but amount of matrix
+ * scan loops which should be made to get stable debounced results.
+ *
+ * On Ergodox matrix scan rate is relatively low, because of slow I2C.
+ * Now it's only 317 scans/second, or about 3.15 msec/scan.
+ * According to Cherry specs, debouncing time is 5 msec.
+ *
+ * And so, there is no sense to have DEBOUNCE higher than 2.
+ */
+
+#ifndef DEBOUNCE
+#   define DEBOUNCE	5
+#endif
+static uint8_t debouncing = DEBOUNCE;
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+static matrix_row_t read_cols(uint8_t row);
+static void init_cols(void);
+static void unselect_rows(void);
+static void select_row(uint8_t row);
+
+static uint8_t mcp23018_reset_loop;
+
+#ifdef DEBUG_MATRIX_SCAN_RATE
+uint32_t matrix_timer;
+uint32_t matrix_scan_count;
+#endif
+
+
+__attribute__ ((weak))
+void matrix_init_user(void) {}
+
+__attribute__ ((weak))
+void matrix_scan_user(void) {}
+
+__attribute__ ((weak))
+void matrix_init_kb(void) {
+  matrix_init_user();
+}
+
+__attribute__ ((weak))
+void matrix_scan_kb(void) {
+  matrix_scan_user();
+}
+
+inline
+uint8_t matrix_rows(void)
+{
+    return MATRIX_ROWS;
+}
+
+inline
+uint8_t matrix_cols(void)
+{
+    return MATRIX_COLS;
+}
+
+void matrix_init(void)
+{
+    // initialize row and col
+
+    mcp23018_status = init_mcp23018();
+
+
+    unselect_rows();
+    init_cols();
+
+    // initialize matrix state: all keys off
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+        matrix[i] = 0;
+        matrix_debouncing[i] = 0;
+    }
+
+#ifdef DEBUG_MATRIX_SCAN_RATE
+    matrix_timer = timer_read32();
+    matrix_scan_count = 0;
+#endif
+
+    matrix_init_kb();
+
+}
+
+void matrix_power_up(void) {
+    mcp23018_status = init_mcp23018();
+
+    unselect_rows();
+    init_cols();
+
+    // initialize matrix state: all keys off
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+        matrix[i] = 0;
+        matrix_debouncing[i] = 0;
+    }
+
+#ifdef DEBUG_MATRIX_SCAN_RATE
+    matrix_timer = timer_read32();
+    matrix_scan_count = 0;
+#endif
+
+}
+
+uint8_t matrix_scan(void)
+{
+    if (mcp23018_status) { // if there was an error
+        if (++mcp23018_reset_loop == 0) {
+            // since mcp23018_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans
+            // this will be approx bit more frequent than once per second
+            print("trying to reset mcp23018\n");
+            mcp23018_status = init_mcp23018();
+            if (mcp23018_status) {
+                print("left side not responding\n");
+            } else {
+                print("left side attached\n");
+                ergodox_blink_all_leds();
+            }
+        }
+    }
+
+#ifdef DEBUG_MATRIX_SCAN_RATE
+    matrix_scan_count++;
+
+    uint32_t timer_now = timer_read32();
+    if (TIMER_DIFF_32(timer_now, matrix_timer)>1000) {
+        print("matrix scan frequency: ");
+        pdec(matrix_scan_count);
+        print("\n");
+
+        matrix_timer = timer_now;
+        matrix_scan_count = 0;
+    }
+#endif
+
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        select_row(i);
+        wait_us(30);  // without this wait read unstable value.
+        matrix_row_t cols = read_cols(i);
+        if (matrix_debouncing[i] != cols) {
+            matrix_debouncing[i] = cols;
+            if (debouncing) {
+                debug("bounce!: "); debug_hex(debouncing); debug("\n");
+            }
+            debouncing = DEBOUNCE;
+        }
+        unselect_rows();
+    }
+
+    if (debouncing) {
+        if (--debouncing) {
+            wait_us(1);
+            // this should be wait_ms(1) but has been left as-is at EZ's request
+        } else {
+            for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+                matrix[i] = matrix_debouncing[i];
+            }
+        }
+    }
+
+    matrix_scan_quantum();
+
+    return 1;
+}
+
+bool matrix_is_modified(void)
+{
+    if (debouncing) return false;
+    return true;
+}
+
+inline
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+    return (matrix[row] & ((matrix_row_t)1<<col));
+}
+
+inline
+matrix_row_t matrix_get_row(uint8_t row)
+{
+    return matrix[row];
+}
+
+void matrix_print(void)
+{
+    print("\nr/c 0123456789ABCDEF\n");
+    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+        phex(row); print(": ");
+        pbin_reverse16(matrix_get_row(row));
+        print("\n");
+    }
+}
+
+uint8_t matrix_key_count(void)
+{
+    uint8_t count = 0;
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        count += bitpop16(matrix[i]);
+    }
+    return count;
+}
+
+/* Column pin configuration
+ *
+ * Teensy
+ * col: 0   1   2   3   4   5
+ * pin: F0  F1  F4  F5  F6  F7
+ *
+ * MCP23018
+ * col: 0   1   2   3   4   5
+ * pin: B5  B4  B3  B2  B1  B0
+ */
+static void  init_cols(void)
+{
+    // init on mcp23018
+    // not needed, already done as part of init_mcp23018()
+
+    // init on teensy
+    // Input with pull-up(DDR:0, PORT:1)
+    DDRF  &= ~(1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0);
+    PORTF |=  (1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0);
+}
+
+static matrix_row_t read_cols(uint8_t row)
+{
+    if (row < 7) {
+        if (mcp23018_status) { // if there was an error
+            return 0;
+        } else {
+            uint8_t data = 0;
+            mcp23018_status = i2c_start(I2C_ADDR_WRITE);    if (mcp23018_status) goto out;
+            mcp23018_status = i2c_write(GPIOB);             if (mcp23018_status) goto out;
+            mcp23018_status = i2c_start(I2C_ADDR_READ);     if (mcp23018_status) goto out;
+            data = i2c_readNak();
+            data = ~data;
+        out:
+            i2c_stop();
+            return data;
+        }
+    } else {
+        // read from teensy
+        return
+            (PINF&(1<<0) ? 0 : (1<<0)) |
+            (PINF&(1<<1) ? 0 : (1<<1)) |
+            (PINF&(1<<4) ? 0 : (1<<2)) |
+            (PINF&(1<<5) ? 0 : (1<<3)) |
+            (PINF&(1<<6) ? 0 : (1<<4)) |
+            (PINF&(1<<7) ? 0 : (1<<5)) ;
+    }
+}
+
+/* Row pin configuration
+ *
+ * Teensy
+ * row: 7   8   9   10  11  12  13
+ * pin: B0  B1  B2  B3  D2  D3  C6
+ *
+ * MCP23018
+ * row: 0   1   2   3   4   5   6
+ * pin: A0  A1  A2  A3  A4  A5  A6
+ */
+static void unselect_rows(void)
+{
+    // unselect on mcp23018
+    if (mcp23018_status) { // if there was an error
+        // do nothing
+    } else {
+        // set all rows hi-Z : 1
+        mcp23018_status = i2c_start(I2C_ADDR_WRITE);    if (mcp23018_status) goto out;
+        mcp23018_status = i2c_write(GPIOA);             if (mcp23018_status) goto out;
+        mcp23018_status = i2c_write( 0xFF
+                              & ~(0<<7)
+                          );                            if (mcp23018_status) goto out;
+    out:
+        i2c_stop();
+    }
+
+    // unselect on teensy
+    // Hi-Z(DDR:0, PORT:0) to unselect
+    DDRB  &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
+    PORTB &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
+    DDRD  &= ~(1<<2 | 1<<3);
+    PORTD &= ~(1<<2 | 1<<3);
+    DDRC  &= ~(1<<6);
+    PORTC &= ~(1<<6);
+}
+
+static void select_row(uint8_t row)
+{
+    if (row < 7) {
+        // select on mcp23018
+        if (mcp23018_status) { // if there was an error
+            // do nothing
+        } else {
+            // set active row low  : 0
+            // set other rows hi-Z : 1
+            mcp23018_status = i2c_start(I2C_ADDR_WRITE);        if (mcp23018_status) goto out;
+            mcp23018_status = i2c_write(GPIOA);                 if (mcp23018_status) goto out;
+            mcp23018_status = i2c_write( 0xFF & ~(1<<row)
+                                  & ~(0<<7)
+                              );                                if (mcp23018_status) goto out;
+        out:
+            i2c_stop();
+        }
+    } else {
+        // select on teensy
+        // Output low(DDR:1, PORT:0) to select
+        switch (row) {
+            case 7:
+                DDRB  |= (1<<0);
+                PORTB &= ~(1<<0);
+                break;
+            case 8:
+                DDRB  |= (1<<1);
+                PORTB &= ~(1<<1);
+                break;
+            case 9:
+                DDRB  |= (1<<2);
+                PORTB &= ~(1<<2);
+                break;
+            case 10:
+                DDRB  |= (1<<3);
+                PORTB &= ~(1<<3);
+                break;
+            case 11:
+                DDRD  |= (1<<2);
+                PORTD &= ~(1<<3);
+                break;
+            case 12:
+                DDRD  |= (1<<3);
+                PORTD &= ~(1<<3);
+                break;
+            case 13:
+                DDRC  |= (1<<6);
+                PORTC &= ~(1<<6);
+                break;
+        }
+    }
+}
+
diff --git a/keyboards/ergodox/ez/twimaster.c b/keyboards/ergodox/ez/twimaster.c
new file mode 100644
index 0000000000..f91c08e6e4
--- /dev/null
+++ b/keyboards/ergodox/ez/twimaster.c
@@ -0,0 +1,208 @@
+/*************************************************************************
+* Title:    I2C master library using hardware TWI interface
+* Author:   Peter Fleury <pfleury@gmx.ch>  http://jump.to/fleury
+* File:     $Id: twimaster.c,v 1.3 2005/07/02 11:14:21 Peter Exp $
+* Software: AVR-GCC 3.4.3 / avr-libc 1.2.3
+* Target:   any AVR device with hardware TWI 
+* Usage:    API compatible with I2C Software Library i2cmaster.h
+**************************************************************************/
+#include <inttypes.h>
+#include <compat/twi.h>
+
+#include <i2cmaster.h>
+
+
+/* define CPU frequency in Mhz here if not defined in Makefile */
+#ifndef F_CPU
+#define F_CPU 16000000UL
+#endif
+
+/* I2C clock in Hz */
+#define SCL_CLOCK  400000L
+
+
+/*************************************************************************
+ Initialization of the I2C bus interface. Need to be called only once
+*************************************************************************/
+void i2c_init(void)
+{
+  /* initialize TWI clock
+   * minimal values in Bit Rate Register (TWBR) and minimal Prescaler
+   * bits in the TWI Status Register should give us maximal possible
+   * I2C bus speed - about 444 kHz
+   *
+   * for more details, see 20.5.2 in ATmega16/32 secification
+   */
+  
+  TWSR = 0;     /* no prescaler */
+  TWBR = 10;    /* must be >= 10 for stable operation */
+
+}/* i2c_init */
+
+
+/*************************************************************************	
+  Issues a start condition and sends address and transfer direction.
+  return 0 = device accessible, 1= failed to access device
+*************************************************************************/
+unsigned char i2c_start(unsigned char address)
+{
+    uint8_t   twst;
+
+	// send START condition
+	TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
+
+	// wait until transmission completed
+	while(!(TWCR & (1<<TWINT)));
+
+	// check value of TWI Status Register. Mask prescaler bits.
+	twst = TW_STATUS & 0xF8;
+	if ( (twst != TW_START) && (twst != TW_REP_START)) return 1;
+
+	// send device address
+	TWDR = address;
+	TWCR = (1<<TWINT) | (1<<TWEN);
+
+	// wail until transmission completed and ACK/NACK has been received
+	while(!(TWCR & (1<<TWINT)));
+
+	// check value of TWI Status Register. Mask prescaler bits.
+	twst = TW_STATUS & 0xF8;
+	if ( (twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK) ) return 1;
+
+	return 0;
+
+}/* i2c_start */
+
+
+/*************************************************************************
+ Issues a start condition and sends address and transfer direction.
+ If device is busy, use ack polling to wait until device is ready
+ 
+ Input:   address and transfer direction of I2C device
+*************************************************************************/
+void i2c_start_wait(unsigned char address)
+{
+    uint8_t   twst;
+
+
+    while ( 1 )
+    {
+	    // send START condition
+	    TWCR = (1<<TWINT) | (1<<TWSTA) | (1<<TWEN);
+    
+    	// wait until transmission completed
+    	while(!(TWCR & (1<<TWINT)));
+    
+    	// check value of TWI Status Register. Mask prescaler bits.
+    	twst = TW_STATUS & 0xF8;
+    	if ( (twst != TW_START) && (twst != TW_REP_START)) continue;
+    
+    	// send device address
+    	TWDR = address;
+    	TWCR = (1<<TWINT) | (1<<TWEN);
+    
+    	// wail until transmission completed
+    	while(!(TWCR & (1<<TWINT)));
+    
+    	// check value of TWI Status Register. Mask prescaler bits.
+    	twst = TW_STATUS & 0xF8;
+    	if ( (twst == TW_MT_SLA_NACK )||(twst ==TW_MR_DATA_NACK) ) 
+    	{    	    
+    	    /* device busy, send stop condition to terminate write operation */
+	        TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
+	        
+	        // wait until stop condition is executed and bus released
+	        while(TWCR & (1<<TWSTO));
+	        
+    	    continue;
+    	}
+    	//if( twst != TW_MT_SLA_ACK) return 1;
+    	break;
+     }
+
+}/* i2c_start_wait */
+
+
+/*************************************************************************
+ Issues a repeated start condition and sends address and transfer direction 
+
+ Input:   address and transfer direction of I2C device
+ 
+ Return:  0 device accessible
+          1 failed to access device
+*************************************************************************/
+unsigned char i2c_rep_start(unsigned char address)
+{
+    return i2c_start( address );
+
+}/* i2c_rep_start */
+
+
+/*************************************************************************
+ Terminates the data transfer and releases the I2C bus
+*************************************************************************/
+void i2c_stop(void)
+{
+    /* send stop condition */
+	TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
+	
+	// wait until stop condition is executed and bus released
+	while(TWCR & (1<<TWSTO));
+
+}/* i2c_stop */
+
+
+/*************************************************************************
+  Send one byte to I2C device
+  
+  Input:    byte to be transfered
+  Return:   0 write successful 
+            1 write failed
+*************************************************************************/
+unsigned char i2c_write( unsigned char data )
+{	
+    uint8_t   twst;
+    
+	// send data to the previously addressed device
+	TWDR = data;
+	TWCR = (1<<TWINT) | (1<<TWEN);
+
+	// wait until transmission completed
+	while(!(TWCR & (1<<TWINT)));
+
+	// check value of TWI Status Register. Mask prescaler bits
+	twst = TW_STATUS & 0xF8;
+	if( twst != TW_MT_DATA_ACK) return 1;
+	return 0;
+
+}/* i2c_write */
+
+
+/*************************************************************************
+ Read one byte from the I2C device, request more data from device 
+ 
+ Return:  byte read from I2C device
+*************************************************************************/
+unsigned char i2c_readAck(void)
+{
+	TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWEA);
+	while(!(TWCR & (1<<TWINT)));    
+
+    return TWDR;
+
+}/* i2c_readAck */
+
+
+/*************************************************************************
+ Read one byte from the I2C device, read is followed by a stop condition 
+ 
+ Return:  byte read from I2C device
+*************************************************************************/
+unsigned char i2c_readNak(void)
+{
+	TWCR = (1<<TWINT) | (1<<TWEN);
+	while(!(TWCR & (1<<TWINT)));
+	
+    return TWDR;
+
+}/* i2c_readNak */
diff --git a/keyboards/ergodox/ez/util/compile_keymap.py b/keyboards/ergodox/ez/util/compile_keymap.py
new file mode 100644
index 0000000000..7076a6ecb2
--- /dev/null
+++ b/keyboards/ergodox/ez/util/compile_keymap.py
@@ -0,0 +1,710 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""Compiler for keymap.c files
+
+This scrip will generate a keymap.c file from a simple
+markdown file with a specific layout.
+
+Usage:
+    python compile_keymap.py INPUT_PATH [OUTPUT_PATH]
+"""
+from __future__ import division
+from __future__ import print_function
+from __future__ import absolute_import
+from __future__ import unicode_literals
+
+import os
+import io
+import re
+import sys
+import json
+import unicodedata
+import collections
+import itertools as it
+
+PY2 = sys.version_info.major == 2
+
+if PY2:
+    chr = unichr
+
+
+KEYBOARD_LAYOUTS = {
+    # These map positions in the parsed layout to
+    # positions in the KEYMAP MATRIX
+    'ergodox_ez': [
+        [ 0,  1,  2,  3,  4,  5,  6],  [38, 39, 40, 41, 42, 43, 44],
+        [ 7,  8,  9, 10, 11, 12, 13],  [45, 46, 47, 48, 49, 50, 51],
+        [14, 15, 16, 17, 18, 19    ],  [    52, 53, 54, 55, 56, 57],
+        [20, 21, 22, 23, 24, 25, 26],  [58, 59, 60, 61, 62, 63, 64],
+        [27, 28, 29, 30, 31        ],  [        65, 66, 67, 68, 69],
+        [                    32, 33],  [70, 71                    ],
+        [                        34],  [72                        ],
+        [                35, 36, 37],  [73, 74, 75                ],
+    ]
+}
+
+ROW_INDENTS = {
+    'ergodox_ez': [0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 5, 0, 6, 0, 4, 0]
+}
+
+BLANK_LAYOUTS = [
+# Compact Layout
+"""
+.------------------------------------.------------------------------------.
+|     |    |    |    |    |    |     |     |    |    |    |    |    |     |
+!-----+----+----+----+----+----------!-----+----+----+----+----+----+-----!
+|     |    |    |    |    |    |     |     |    |    |    |    |    |     |
+!-----+----+----+----x----x----!     !     !----x----x----+----+----+-----!
+|     |    |    |    |    |    |-----!-----!    |    |    |    |    |     |
+!-----+----+----+----x----x----!     !     !----x----x----+----+----+-----!
+|     |    |    |    |    |    |     |     |    |    |    |    |    |     |
+'-----+----+----+----+----+----------'----------+----+----+----+----+-----'
+ |    |    |    |    |    |                     !    |    |    |    |    |
+ '------------------------'                     '------------------------'
+                        .-----------. .-----------.
+                        |     |     | !     |     |
+                  .-----+-----+-----! !-----+-----+-----.
+                  !     !     |     | !     |     !     !
+                  !     !     !-----! !-----!     !     !
+                  |     |     |     | !     |     |     |
+                  '-----------------' '-----------------'
+""",
+
+# Wide Layout
+"""
+.---------------------------------------------. .---------------------------------------------.
+|       |     |     |     |     |     |       | !       |     |     |     |     |     |       |
+!-------+-----+-----+-----+-----+-------------! !-------+-----+-----+-----+-----+-----+-------!
+|       |     |     |     |     |     |       | !       |     |     |     |     |     |       |
+!-------+-----+-----+-----x-----x-----!       ! !       !-----x-----x-----+-----+-----+-------!
+|       |     |     |     |     |     |-------! !-------!     |     |     |     |     |       |
+!-------+-----+-----+-----x-----x-----!       ! !       !-----x-----x-----+-----+-----+-------!
+|       |     |     |     |     |     |       | !       |     |     |     |     |     |       |
+'-------+-----+-----+-----+-----+-------------' '-------------+-----+-----+-----+-----+-------'
+ |      |     |     |     |     |                             !     |     |     |     |      |
+ '------------------------------'                             '------------------------------'
+                              .---------------. .---------------.
+                              |       |       | !       |       |
+                      .-------+-------+-------! !-------+-------+-------.
+                      !       !       |       | !       |       !       !
+                      !       !       !-------! !-------!       !       !
+                      |       |       |       | !       |       |       |
+                      '-----------------------' '-----------------------'
+""",
+]
+
+
+DEFAULT_CONFIG = {
+    "keymaps_includes": [
+        "keymap_common.h",
+    ],
+    'filler': "-+.'!:x",
+    'separator': "|",
+    'default_key_prefix': ["KC_"],
+}
+
+
+SECTIONS = [
+    'layout_config',
+    'layers',
+]
+
+
+#       Markdown Parsing
+
+ONELINE_COMMENT_RE = re.compile(r"""
+    ^                       # comment must be at the start of the line
+    \s*                     # arbitrary whitespace
+    //                      # start of the comment
+    (.*)                    # the comment
+    $                       # until the end of line
+""", re.MULTILINE | re.VERBOSE
+)
+
+INLINE_COMMENT_RE = re.compile(r"""
+    ([\,\"\[\]\{\}\d])      # anythig that might end a expression
+    \s+                     # comment must be preceded by whitespace
+    //                      # start of the comment
+    \s                      # and succeded by whitespace
+    (?:[^\"\]\}\{\[]*)      # the comment (except things which might be json)
+    $                       # until the end of line
+""", re.MULTILINE | re.VERBOSE)
+
+TRAILING_COMMA_RE = re.compile(r"""
+    ,                       # the comma
+    (?:\s*)                 # arbitrary whitespace
+    $                       # only works if the trailing comma is followed by newline
+    (\s*)                   # arbitrary whitespace
+    ([\]\}])                # end of an array or object
+""", re.MULTILINE | re.VERBOSE)
+
+
+def loads(raw_data):
+    if isinstance(raw_data, bytes):
+        raw_data = raw_data.decode('utf-8')
+
+    raw_data = ONELINE_COMMENT_RE.sub(r"", raw_data)
+    raw_data = INLINE_COMMENT_RE.sub(r"\1", raw_data)
+    raw_data = TRAILING_COMMA_RE.sub(r"\1\2", raw_data)
+    return json.loads(raw_data)
+
+
+def parse_config(path):
+    def reset_section():
+        section.update({
+            'name': section.get('name', ""),
+            'sub_name': "",
+            'start_line': -1,
+            'end_line': -1,
+            'code_lines': [],
+        })
+
+    def start_section(line_index, line):
+        end_section()
+        if line.startswith("# "):
+            name = line[2:]
+        elif line.startswith("## "):
+            name = line[3:]
+        else:
+            name = ""
+
+        name = name.strip().replace(" ", "_").lower()
+        if name in SECTIONS:
+            section['name'] = name
+        else:
+            section['sub_name'] = name
+        section['start_line'] = line_index
+
+    def end_section():
+        if section['start_line'] >= 0:
+            if section['name'] == 'layout_config':
+                config.update(loads("\n".join(
+                    section['code_lines']
+                )))
+            elif section['sub_name'].startswith('layer'):
+                layer_name = section['sub_name']
+                config['layer_lines'][layer_name] = section['code_lines']
+
+        reset_section()
+
+    def amend_section(line_index, line):
+        section['end_line'] = line_index
+        section['code_lines'].append(line)
+
+    config = DEFAULT_CONFIG.copy()
+    config.update({
+        'layer_lines': collections.OrderedDict(),
+        'macro_ids': {'UM'},
+        'unicode_macros': {},
+    })
+
+    section = {}
+    reset_section()
+
+    with io.open(path, encoding="utf-8") as fh:
+        for i, line in enumerate(fh):
+            if line.startswith("#"):
+                start_section(i, line)
+            elif line.startswith("    "):
+                amend_section(i, line[4:])
+            else:
+                # TODO: maybe parse description
+                pass
+
+    end_section()
+    assert 'layout' in config
+    return config
+
+#       header file parsing
+
+IF0_RE = re.compile(r"""
+    ^
+    #if 0
+    $.*?
+    #endif
+""", re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+
+COMMENT_RE = re.compile(r"""
+    /\*
+    .*?
+    \*/"
+""", re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+
+def read_header_file(path):
+    with io.open(path, encoding="utf-8") as fh:
+        data = fh.read()
+    data, _ = COMMENT_RE.subn("", data)
+    data, _ = IF0_RE.subn("", data)
+    return data
+
+
+def regex_partial(re_str_fmt, flags):
+    def partial(*args, **kwargs):
+        re_str = re_str_fmt.format(*args, **kwargs)
+        return re.compile(re_str, flags)
+    return partial
+
+
+KEYDEF_REP = regex_partial(r"""
+    #define
+    \s
+    (
+        (?:{})          # the prefixes
+        (?:\w+)         # the key name
+    )                   # capture group end
+""", re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+
+ENUM_RE = re.compile(r"""
+    (
+        enum
+        \s\w+\s
+        \{
+        .*?             # the enum content
+        \}
+        ;
+    )                   # capture group end
+""", re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+
+ENUM_KEY_REP = regex_partial(r"""
+    (
+        {}              # the prefixes
+        \w+             # the key name
+    )                   # capture group end
+""", re.MULTILINE | re.DOTALL | re.VERBOSE)
+
+
+def parse_keydefs(config, data):
+    prefix_options = "|".join(config['key_prefixes'])
+    keydef_re = KEYDEF_REP(prefix_options)
+    enum_key_re = ENUM_KEY_REP(prefix_options)
+    for match in keydef_re.finditer(data):
+        yield match.groups()[0]
+
+    for enum_match in ENUM_RE.finditer(data):
+        enum = enum_match.groups()[0]
+        for key_match in enum_key_re.finditer(enum):
+            yield key_match.groups()[0]
+
+
+def parse_valid_keys(config, out_path):
+    basepath = os.path.abspath(os.path.join(os.path.dirname(out_path)))
+    dirpaths = []
+    subpaths = []
+    while len(subpaths) < 6:
+        path = os.path.join(basepath, *subpaths)
+        dirpaths.append(path)
+        dirpaths.append(os.path.join(path, "tmk_core", "common"))
+        dirpaths.append(os.path.join(path, "quantum"))
+        subpaths.append('..')
+
+    includes = set(config['keymaps_includes'])
+    includes.add("keycode.h")
+
+    valid_keycodes = set()
+    for dirpath, include in it.product(dirpaths, includes):
+        include_path = os.path.join(dirpath, include)
+        if os.path.exists(include_path):
+            header_data = read_header_file(include_path)
+            valid_keycodes.update(
+                parse_keydefs(config, header_data)
+            )
+    return valid_keycodes
+
+
+#       Keymap Parsing
+
+def iter_raw_codes(layer_lines, filler, separator):
+    filler_re = re.compile("[" + filler + " ]")
+    for line in layer_lines:
+        line, _ = filler_re.subn("", line.strip())
+        if not line:
+            continue
+        codes = line.split(separator)
+        for code in codes[1:-1]:
+            yield code
+
+
+def iter_indexed_codes(raw_codes, key_indexes):
+    key_rows = {}
+    key_indexes_flat = []
+
+    for row_index, key_indexes in enumerate(key_indexes):
+        for key_index in key_indexes:
+            key_rows[key_index] = row_index
+        key_indexes_flat.extend(key_indexes)
+    assert len(raw_codes) == len(key_indexes_flat)
+    for raw_code, key_index in zip(raw_codes, key_indexes_flat):
+        # we keep track of the row mostly for layout purposes
+        yield raw_code, key_index, key_rows[key_index]
+
+
+LAYER_CHANGE_RE = re.compile(r"""
+    (DF|TG|MO)\(\d+\)
+""", re.VERBOSE)
+
+
+MACRO_RE = re.compile(r"""
+    M\(\w+\)
+""", re.VERBOSE)
+
+
+UNICODE_RE = re.compile(r"""
+    U[0-9A-F]{4}
+""", re.VERBOSE)
+
+
+NON_CODE = re.compile(r"""
+    ^[^A-Z0-9_]$
+""", re.VERBOSE)
+
+
+def parse_uni_code(raw_code):
+    macro_id = "UC_" + (
+        unicodedata.name(raw_code)
+        .replace(" ", "_")
+        .replace("-", "_")
+    )
+    code = "M({})".format(macro_id)
+    uc_hex = "{:04X}".format(ord(raw_code))
+    return code, macro_id, uc_hex
+
+
+def parse_key_code(raw_code, key_prefixes, valid_keycodes):
+    if raw_code in valid_keycodes:
+        return raw_code
+
+    for prefix in key_prefixes:
+        code = prefix + raw_code
+        if code in valid_keycodes:
+            return code
+
+
+def parse_code(raw_code, key_prefixes, valid_keycodes):
+    if not raw_code:
+        return 'KC_TRNS', None, None
+
+    if LAYER_CHANGE_RE.match(raw_code):
+        return raw_code, None, None
+
+    if MACRO_RE.match(raw_code):
+        macro_id = raw_code[2:-1]
+        return raw_code, macro_id, None
+
+    if UNICODE_RE.match(raw_code):
+        hex_code = raw_code[1:]
+        return parse_uni_code(chr(int(hex_code, 16)))
+
+    if NON_CODE.match(raw_code):
+        return parse_uni_code(raw_code)
+
+    code = parse_key_code(raw_code, key_prefixes, valid_keycodes)
+    return code, None, None
+
+
+def parse_keymap(config, key_indexes, layer_lines, valid_keycodes):
+    keymap = {}
+    raw_codes = list(iter_raw_codes(
+        layer_lines, config['filler'], config['separator']
+    ))
+    indexed_codes = iter_indexed_codes(raw_codes, key_indexes)
+    key_prefixes = config['key_prefixes']
+    for raw_code, key_index, row_index in indexed_codes:
+        code, macro_id, uc_hex = parse_code(
+            raw_code, key_prefixes, valid_keycodes
+        )
+        # TODO: line numbers for invalid codes
+        err_msg = "Could not parse key '{}' on row {}".format(
+            raw_code, row_index
+        )
+        assert code is not None, err_msg
+        # print(repr(raw_code), repr(code), macro_id, uc_hex)
+        if macro_id:
+            config['macro_ids'].add(macro_id)
+        if uc_hex:
+            config['unicode_macros'][macro_id] = uc_hex
+        keymap[key_index] = (code, row_index)
+    return keymap
+
+
+def parse_keymaps(config, valid_keycodes):
+    keymaps = collections.OrderedDict()
+    key_indexes = config.get(
+        'key_indexes', KEYBOARD_LAYOUTS[config['layout']]
+    )
+    # TODO: maybe validate key_indexes
+
+    for layer_name, layer_lines, in config['layer_lines'].items():
+        keymaps[layer_name] = parse_keymap(
+            config, key_indexes, layer_lines, valid_keycodes
+        )
+    return keymaps
+
+#       keymap.c output
+
+USERCODE = """
+// Runs just one time when the keyboard initializes.
+void matrix_init_user(void) {
+
+};
+
+// Runs constantly in the background, in a loop.
+void matrix_scan_user(void) {
+    uint8_t layer = biton32(layer_state);
+
+    ergodox_board_led_off();
+    ergodox_right_led_1_off();
+    ergodox_right_led_2_off();
+    ergodox_right_led_3_off();
+    switch (layer) {
+        case L1:
+            ergodox_right_led_1_on();
+            break;
+        case L2:
+            ergodox_right_led_2_on();
+            break;
+        case L3:
+            ergodox_right_led_3_on();
+            break;
+        case L4:
+            ergodox_right_led_1_on();
+            ergodox_right_led_2_on();
+            break;
+        case L5:
+            ergodox_right_led_1_on();
+            ergodox_right_led_3_on();
+            break;
+        // case L6:
+        //     ergodox_right_led_2_on();
+        //     ergodox_right_led_3_on();
+        //     break;
+        // case L7:
+        //     ergodox_right_led_1_on();
+        //     ergodox_right_led_2_on();
+        //     ergodox_right_led_3_on();
+        //     break;
+        default:
+            ergodox_board_led_off();
+            break;
+    }
+};
+"""
+
+MACROCODE = """
+#define UC_MODE_WIN 0
+#define UC_MODE_LINUX 1
+#define UC_MODE_OSX 2
+
+// TODO: allow default mode to be configured
+static uint16_t unicode_mode = UC_MODE_WIN;
+
+uint16_t hextokeycode(uint8_t hex) {{
+    if (hex == 0x0) {{
+        return KC_P0;
+    }}
+    if (hex < 0xA) {{
+        return KC_P1 + (hex - 0x1);
+    }}
+    return KC_A + (hex - 0xA);
+}}
+
+void unicode_action_function(uint16_t hi, uint16_t lo) {{
+    switch (unicode_mode) {{
+    case UC_MODE_WIN:
+        register_code(KC_LALT);
+
+        register_code(KC_PPLS);
+        unregister_code(KC_PPLS);
+
+        register_code(hextokeycode((hi & 0xF0) >> 4));
+        unregister_code(hextokeycode((hi & 0xF0) >> 4));
+        register_code(hextokeycode((hi & 0x0F)));
+        unregister_code(hextokeycode((hi & 0x0F)));
+        register_code(hextokeycode((lo & 0xF0) >> 4));
+        unregister_code(hextokeycode((lo & 0xF0) >> 4));
+        register_code(hextokeycode((lo & 0x0F)));
+        unregister_code(hextokeycode((lo & 0x0F)));
+
+        unregister_code(KC_LALT);
+        break;
+    case UC_MODE_LINUX:
+        register_code(KC_LCTL);
+        register_code(KC_LSFT);
+
+        register_code(KC_U);
+        unregister_code(KC_U);
+
+        register_code(hextokeycode((hi & 0xF0) >> 4));
+        unregister_code(hextokeycode((hi & 0xF0) >> 4));
+        register_code(hextokeycode((hi & 0x0F)));
+        unregister_code(hextokeycode((hi & 0x0F)));
+        register_code(hextokeycode((lo & 0xF0) >> 4));
+        unregister_code(hextokeycode((lo & 0xF0) >> 4));
+        register_code(hextokeycode((lo & 0x0F)));
+        unregister_code(hextokeycode((lo & 0x0F)));
+
+        unregister_code(KC_LCTL);
+        unregister_code(KC_LSFT);
+        break;
+    case UC_MODE_OSX:
+        break;
+    }}
+}}
+
+const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt) {{
+    if (!record->event.pressed) {{
+        return MACRO_NONE;
+    }}
+    // MACRODOWN only works in this function
+    switch(id) {{
+        case UM:
+            unicode_mode = (unicode_mode + 1) % 2;
+            break;
+{macro_cases}
+{unicode_macro_cases}
+        default:
+            break;
+    }}
+    return MACRO_NONE;
+}};
+"""
+
+
+UNICODE_MACRO_TEMPLATE = """
+case {macro_id}:
+    unicode_action_function(0x{hi:02x}, 0x{lo:02x});
+    break;
+""".strip()
+
+
+def unicode_macro_cases(config):
+    for macro_id, uc_hex in config['unicode_macros'].items():
+        hi = int(uc_hex, 16) >> 8
+        lo = int(uc_hex, 16) & 0xFF
+        unimacro_keys = ", ".join(
+            "T({})".format(
+                "KP_" + digit if digit.isdigit() else digit
+            ) for digit in uc_hex
+        )
+        yield UNICODE_MACRO_TEMPLATE.format(
+            macro_id=macro_id, hi=hi, lo=lo
+        )
+
+
+def iter_keymap_lines(keymap, row_indents=None):
+    col_widths = {}
+    col = 0
+    # first pass, figure out the column widths
+    prev_row_index = None
+    for code, row_index in keymap.values():
+        if row_index != prev_row_index:
+            col = 0
+            if row_indents:
+                col = row_indents[row_index]
+        col_widths[col] = max(len(code), col_widths.get(col, 0))
+        prev_row_index = row_index
+        col += 1
+
+    # second pass, yield the cell values
+    col = 0
+    prev_row_index = None
+    for key_index in sorted(keymap):
+        code, row_index = keymap[key_index]
+        if row_index != prev_row_index:
+            col = 0
+            yield "\n"
+            if row_indents:
+                for indent_col in range(row_indents[row_index]):
+                    pad = " " * (col_widths[indent_col] - 4)
+                    yield (" /*-*/" + pad)
+                col = row_indents[row_index]
+        else:
+            yield pad
+        yield " {}".format(code)
+        if key_index < len(keymap) - 1:
+            yield ","
+            # This will be yielded on the next iteration when
+            # we know that we're not at the end of a line.
+            pad = " " * (col_widths[col] - len(code))
+        prev_row_index = row_index
+        col += 1
+
+
+def iter_keymap_parts(config, keymaps):
+    # includes
+    for include_path in config['keymaps_includes']:
+        yield '#include "{}"\n'.format(include_path)
+
+    yield "\n"
+
+    # definitions
+    for i, macro_id in enumerate(sorted(config['macro_ids'])):
+        yield "#define {} {}\n".format(macro_id, i)
+
+    yield "\n"
+
+    for i, layer_name in enumerate(config['layer_lines']):
+        yield '#define L{0:<3} {0:<5}  // {1}\n'.format(i, layer_name)
+
+    yield "\n"
+
+    # keymaps
+    yield "const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {\n"
+
+    for i, layer_name in enumerate(config['layer_lines']):
+        # comment
+        layer_lines = config['layer_lines'][layer_name]
+        prefixed_lines = " * " + " * ".join(layer_lines)
+        yield "/*\n{} */\n".format(prefixed_lines)
+
+        # keymap codes
+        keymap = keymaps[layer_name]
+        row_indents = ROW_INDENTS.get(config['layout'])
+        keymap_lines = "".join(iter_keymap_lines(keymap, row_indents))
+        yield "[L{0}] = KEYMAP({1}\n),\n".format(i, keymap_lines)
+
+    yield "};\n\n"
+
+    # no idea what this is for
+    yield "const uint16_t PROGMEM fn_actions[] = {};\n"
+
+    # macros
+    yield MACROCODE.format(
+        macro_cases="",
+        unicode_macro_cases="\n".join(unicode_macro_cases(config)),
+    )
+
+    # TODO: dynamically create blinking lights
+    yield USERCODE
+
+
+def main(argv=sys.argv[1:]):
+    if not argv or '-h' in argv or '--help' in argv:
+        print(__doc__)
+        return 0
+
+    in_path = os.path.abspath(argv[0])
+    if not os.path.exists(in_path):
+        print("No such file '{}'".format(in_path))
+        return 1
+
+    if len(argv) > 1:
+        out_path = os.path.abspath(argv[1])
+    else:
+        dirname = os.path.dirname(in_path)
+        out_path = os.path.join(dirname, "keymap.c")
+
+    config = parse_config(in_path)
+    valid_keys = parse_valid_keys(config, out_path)
+    keymaps = parse_keymaps(config, valid_keys)
+
+    with io.open(out_path, mode="w", encoding="utf-8") as fh:
+        for part in iter_keymap_parts(config, keymaps):
+            fh.write(part)
+
+
+if __name__ == '__main__':
+    sys.exit(main())
diff --git a/keyboards/ergodox/ez/util/readme.md b/keyboards/ergodox/ez/util/readme.md
new file mode 100644
index 0000000000..26c5e5d99c
--- /dev/null
+++ b/keyboards/ergodox/ez/util/readme.md
@@ -0,0 +1,3 @@
+# ErgoDox EZ Utilities
+
+The Python script in this directory, by [mbarkhau](https://github.com/mbarkhau) allows you to write out a basic ErgoDox EZ keymap using Markdown notation, and then transpile it to C, which you can then compile. It's experimental, but if you're not comfortable using C, it's a nice option.