Add support for the ErgoDone

10 files changed, 1051 insertions, 0 deletions

diff --git a/keyboards/ergodox/ergodone/Makefile b/keyboards/ergodox/ergodone/Makefile
new file mode 100644
index 0000000000..bd09e5885d
--- /dev/null
+++ b/keyboards/ergodox/ergodone/Makefile
@@ -0,0 +1,3 @@
+ifndef MAKEFILE_INCLUDED
+	include ../../../Makefile
+endif
diff --git a/keyboards/ergodox/ergodone/config.h b/keyboards/ergodox/ergodone/config.h
new file mode 100644
index 0000000000..80ff47f661
--- /dev/null
+++ b/keyboards/ergodox/ergodone/config.h
@@ -0,0 +1,49 @@
+#ifndef ERGODOX_ERGODONE_CONFIG_H
+#define ERGODOX_ERGODONE_CONFIG_H
+
+#include "../config.h"
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x1307
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    ErgoDone
+#define PRODUCT         ErgoDone
+#define DESCRIPTION     QMK keyboard firmware for ErgoDone
+
+/* key matrix size */
+#define MATRIX_ROWS 6
+#define MATRIX_COLS 14
+
+/* fix space cadet rollover issue */
+#define DISABLE_SPACE_CADET_ROLLOVER
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCE    5
+
+#define PREVENT_STUCK_MODIFIERS
+
+#define USB_MAX_POWER_CONSUMPTION 500
+
+/*
+ * 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/ergodone/ergodone.c b/keyboards/ergodox/ergodone/ergodone.c
new file mode 100644
index 0000000000..6b8d8a0632
--- /dev/null
+++ b/keyboards/ergodox/ergodone/ergodone.c
@@ -0,0 +1,5 @@
+#include "ergodone.h"
+
+void matrix_init_kb(void) {
+  matrix_init_user();
+}
diff --git a/keyboards/ergodox/ergodone/ergodone.h b/keyboards/ergodox/ergodone/ergodone.h
new file mode 100644
index 0000000000..21ef9d3e31
--- /dev/null
+++ b/keyboards/ergodox/ergodone/ergodone.h
@@ -0,0 +1,54 @@
+#ifndef ERGODOX_ERGODONE_H
+#define ERGODOX_ERGODONE_H
+
+#include "quantum.h"
+#include <stdint.h>
+#include <stdbool.h>
+
+#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
+#define CPU_16MHz       0x00
+
+void init_ergodox(void);
+
+inline void ergodox_right_led_1_off(void) {}
+inline void ergodox_right_led_1_on(void)  {}
+inline void ergodox_right_led_2_off(void) {}
+inline void ergodox_right_led_2_on(void)  {}
+inline void ergodox_right_led_3_off(void) {}
+inline void ergodox_right_led_3_on(void)  {}
+inline void ergodox_board_led_off(void)   {}
+inline void ergodox_board_led_on(void)    {}
+
+#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,   k01, k02, k03, k04, k05,   k06,      k07,   k08,   k09, k0A, k0B, k0C, k0D    }, \
+    { k10,   k11, k12, k13, k14, k15,   k16,      k17,   k18,   k19, k1A, k1B, k1C, k1D    }, \
+    { k20,   k21, k22, k23, k24, k25,   KC_NO,    KC_NO, k28,   k29, k2A, k2B, k2C, k2D    }, \
+    { k30,   k31, k32, k33, k34, k35,   k36,      k37,   k38,   k39, k3A, k3B, k3C, k3D    }, \
+    { k40,   k41, k42, k43, k44, KC_NO, KC_NO,    KC_NO, KC_NO, k49, k4A, k4B, k4C, k4D    }, \
+    { KC_NO, k51, k52, k53, k54, k55,   k56,      k57,   k58,   k59, k5A, k5B, k5C, KC_NO  } \
+   }
+
+#endif
diff --git a/keyboards/ergodox/ergodone/expander.c b/keyboards/ergodox/ergodone/expander.c
new file mode 100644
index 0000000000..0c8a2289c5
--- /dev/null
+++ b/keyboards/ergodox/ergodone/expander.c
@@ -0,0 +1,120 @@
+#include <stdbool.h>
+#include "action.h"
+#include "i2cmaster.h"
+#include "expander.h"
+#include "debug.h"
+
+static uint8_t expander_status = 0;
+static uint8_t expander_input = 0;
+
+void expander_config(void);
+uint8_t expander_write(uint8_t reg, uint8_t data);
+uint8_t expander_read(uint8_t reg, uint8_t *data);
+
+void expander_init(void)
+{
+  i2c_init();
+  expander_scan();
+}
+
+void expander_scan(void)
+{
+  dprintf("expander status: %d ... ", expander_status);
+  uint8_t ret = i2c_start(EXPANDER_ADDR | I2C_WRITE);
+  if (ret == 0) {
+    i2c_stop();
+    if (expander_status == 0) {
+      dprintf("attached\n");
+      expander_status = 1;
+      expander_config();
+      clear_keyboard();
+    }
+  }
+  else {
+    if (expander_status == 1) {
+      dprintf("detached\n");
+      expander_status = 0;
+      clear_keyboard();
+    }
+  }
+  dprintf("%d\n", expander_status);
+}
+
+void expander_read_cols(void)
+{
+  expander_read(EXPANDER_REG_GPIOA, &expander_input);
+}
+
+uint8_t expander_get_col(uint8_t col)
+{
+  if (col > 4) {
+    col++;
+  }
+  return expander_input & (1<<col) ? 1 : 0;
+}
+
+matrix_row_t expander_read_row(void)
+{
+  expander_read_cols();
+
+  /* make cols */
+  matrix_row_t cols = 0;
+  for (uint8_t col = 0; col < MATRIX_COLS; col++) {
+    if (expander_get_col(col)) {
+      cols |= (1UL << (MATRIX_COLS - 1 - col));
+    }
+  }
+
+  return cols;
+}
+
+void expander_unselect_rows(void)
+{
+  expander_write(EXPANDER_REG_IODIRB, 0xFF);
+}
+
+void expander_select_row(uint8_t row)
+{
+  expander_write(EXPANDER_REG_IODIRB, ~(1<<(row+1)));
+}
+
+void expander_config(void)
+{
+  expander_write(EXPANDER_REG_IPOLA, 0xFF);
+  expander_write(EXPANDER_REG_GPPUA, 0xFF);
+  expander_write(EXPANDER_REG_IODIRB, 0xFF);
+}
+
+uint8_t expander_write(uint8_t reg, uint8_t data)
+{
+  if (expander_status == 0) {
+    return 0;
+  }
+  uint8_t ret;
+  ret = i2c_start(EXPANDER_ADDR | I2C_WRITE);
+  if (ret) goto stop;
+  ret = i2c_write(reg);
+  if (ret) goto stop;
+  ret = i2c_write(data);
+ stop:
+  i2c_stop();
+  return ret;
+}
+
+uint8_t expander_read(uint8_t reg, uint8_t *data)
+{
+  if (expander_status == 0) {
+    return 0;
+  }
+  uint8_t ret;
+  ret = i2c_start(EXPANDER_ADDR | I2C_WRITE);
+  if (ret) goto stop;
+  ret = i2c_write(reg);
+  if (ret) goto stop;
+  ret = i2c_rep_start(EXPANDER_ADDR | I2C_READ);
+  if (ret) goto stop;
+  *data = i2c_readNak();
+ stop:
+  i2c_stop();
+  return ret;
+}
diff --git a/keyboards/ergodox/ergodone/expander.h b/keyboards/ergodox/ergodone/expander.h
new file mode 100644
index 0000000000..8676fed693
--- /dev/null
+++ b/keyboards/ergodox/ergodone/expander.h
@@ -0,0 +1,48 @@
+#ifndef EXPANDER_H
+#define EXPANDER_H
+
+#include <stdint.h>
+#include "matrix.h"
+
+#define MCP23017
+#define MCP23017_A0 0
+#define MCP23017_A1 0
+#define MCP23017_A2 0
+
+#ifdef MCP23017
+#define EXPANDER_ADDR ((0x20|(MCP23017_A0<<0)|(MCP23017_A1<<1)|(MCP23017_A2<<2)) << 1)
+enum EXPANDER_REG_BANK0 {
+  EXPANDER_REG_IODIRA = 0,
+  EXPANDER_REG_IODIRB,
+  EXPANDER_REG_IPOLA,
+  EXPANDER_REG_IPOLB,
+  EXPANDER_REG_GPINTENA,
+  EXPANDER_REG_GPINTENB,
+  EXPANDER_REG_DEFVALA,
+  EXPANDER_REG_DEFVALB,
+  EXPANDER_REG_INTCONA,
+  EXPANDER_REG_INTCONB,
+  EXPANDER_REG_IOCONA,
+  EXPANDER_REG_IOCONB,
+  EXPANDER_REG_GPPUA,
+  EXPANDER_REG_GPPUB,
+  EXPANDER_REG_INTFA,
+  EXPANDER_REG_INTFB,
+  EXPANDER_REG_INTCAPA,
+  EXPANDER_REG_INTCAPB,
+  EXPANDER_REG_GPIOA,
+  EXPANDER_REG_GPIOB,
+  EXPANDER_REG_OLATA,
+  EXPANDER_REG_OLATB
+};
+#endif
+
+void expander_init(void);
+void expander_scan(void);
+void expander_read_cols(void);
+uint8_t expander_get_col(uint8_t col);
+matrix_row_t expander_read_row(void);
+void expander_unselect_rows(void);
+void expander_select_row(uint8_t row);
+
+#endif
diff --git a/keyboards/ergodox/ergodone/i2cmaster.h b/keyboards/ergodox/ergodone/i2cmaster.h
new file mode 100644
index 0000000000..3917b9e6c0
--- /dev/null
+++ b/keyboards/ergodox/ergodone/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/ergodone/matrix.c b/keyboards/ergodox/ergodone/matrix.c
new file mode 100644
index 0000000000..2eb8f24ba8
--- /dev/null
+++ b/keyboards/ergodox/ergodone/matrix.c
@@ -0,0 +1,295 @@
+#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 "ergodone.h"
+#include "expander.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
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+
+// Debouncing: store for each key the number of scans until it's eligible to
+// change.  When scanning the matrix, ignore any changes in keys that have
+// already changed in the last DEBOUNCE scans.
+static uint8_t debounce_matrix[MATRIX_ROWS * MATRIX_COLS];
+
+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);
+
+#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)
+{
+  // disable JTAG
+  MCUCR = (1<<JTD);
+  MCUCR = (1<<JTD);
+
+  unselect_rows();
+  init_cols();
+
+  // initialize matrix state: all keys off
+  for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+    matrix[i] = 0;
+    for (uint8_t j=0; j < MATRIX_COLS; ++j) {
+      debounce_matrix[i * MATRIX_COLS + j] = 0;
+    }
+  }
+
+#ifdef DEBUG_MATRIX_SCAN_RATE
+  matrix_timer = timer_read32();
+  matrix_scan_count = 0;
+#endif
+
+  matrix_init_quantum();
+
+}
+
+void matrix_power_up(void) {
+  unselect_rows();
+  init_cols();
+
+  // initialize matrix state: all keys off
+  for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+    matrix[i] = 0;
+  }
+
+#ifdef DEBUG_MATRIX_SCAN_RATE
+  matrix_timer = timer_read32();
+  matrix_scan_count = 0;
+#endif
+}
+
+// Returns a matrix_row_t whose bits are set if the corresponding key should be
+// eligible to change in this scan.
+matrix_row_t debounce_mask(uint8_t row) {
+  matrix_row_t result = 0;
+  for (uint8_t j=0; j < MATRIX_COLS; ++j) {
+    if (debounce_matrix[row * MATRIX_COLS + j]) {
+      --debounce_matrix[row * MATRIX_COLS + j];
+    } else {
+      result |= (1 << j);
+    }
+  }
+  return result;
+}
+
+// Report changed keys in the given row.  Resets the debounce countdowns
+// corresponding to each set bit in 'change' to DEBOUNCE.
+void debounce_report(matrix_row_t change, uint8_t row) {
+  for (uint8_t i = 0; i < MATRIX_COLS; ++i) {
+    if (change & (1 << i)) {
+      debounce_matrix[row * MATRIX_COLS + i] = DEBOUNCE;
+    }
+  }
+}
+
+uint8_t matrix_scan(void)
+{
+  expander_scan();
+
+#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_print();
+
+    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 mask = debounce_mask(i);
+    matrix_row_t cols = (read_cols(i) & mask) | (matrix[i] & ~mask);
+    debounce_report(cols ^ matrix[i], i);
+    matrix[i] = cols;
+
+    unselect_rows();
+  }
+
+  matrix_scan_quantum();
+
+  return 1;
+}
+
+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
+ *
+ * Pro Micro: 6    5    4    3    2    1    0
+ *            PD3  PD2  PD4  PC6  PD7  PE6  PB4
+ *
+ * Expander:  13   12   11   10   9    8    7
+ */
+static void  init_cols(void)
+{
+  // Pro Micro
+  DDRE  &= ~(1<<PE6);
+  PORTE |=  (1<<PE6);
+  DDRD  &= ~(1<<PD2 | 1<<PD3 | 1<<PD4 | 1<<PD7);
+  PORTD |=  (1<<PD2 | 1<<PD3 | 1<<PD4 | 1<<PD7);
+  DDRC  &= ~(1<<PC6);
+  PORTC |=  (1<<PC6);
+  DDRB  &= ~(1<<PB4);
+  PORTB |=  (1<<PB4);
+
+  // MCP23017
+  expander_init();
+}
+
+static matrix_row_t read_cols(uint8_t row)
+{
+  return expander_read_row() |
+    (PIND&(1<<PD3) ? 0 : (1<<6)) |
+    (PIND&(1<<PD2) ? 0 : (1<<5)) |
+    (PIND&(1<<PD4) ? 0 : (1<<4)) |
+    (PINC&(1<<PC6) ? 0 : (1<<3)) |
+    (PIND&(1<<PD7) ? 0 : (1<<2)) |
+    (PINE&(1<<PE6) ? 0 : (1<<1)) |
+    (PINB&(1<<PB4) ? 0 : (1<<0)) ;
+}
+
+/* Row pin configuration
+ *
+ * Pro Micro: 0   1   2   3   4   5
+ *            F4  F5  F6  F7  B1  B2
+ *
+ * Expander:  0   1   2   3   4   5
+ */
+static void unselect_rows(void)
+{
+  // Pro Micro
+  DDRF  &= ~(1<<PF4 | 1<<PF5 | 1<<PF6 | 1<<PF7);
+  PORTF &= ~(1<<PF4 | 1<<PF5 | 1<<PF6 | 1<<PF7);
+  DDRB  &= ~(1<<PB1 | 1<<PB2);
+  PORTB &= ~(1<<PB1 | 1<<PB2);
+
+  // Expander
+  expander_unselect_rows();
+}
+
+static void select_row(uint8_t row)
+{
+  // Pro Micro
+  switch (row) {
+  case 0:
+    DDRF  |=  (1<<PF4);
+    PORTF &= ~(1<<PF4);
+    break;
+  case 1:
+    DDRF  |=  (1<<PF5);
+    PORTF &= ~(1<<PF5);
+    break;
+  case 2:
+    DDRF  |=  (1<<PF6);
+    PORTF &= ~(1<<PF6);
+    break;
+  case 3:
+    DDRF  |=  (1<<PF7);
+    PORTF &= ~(1<<PF7);
+    break;
+  case 4:
+    DDRB  |=  (1<<PB1);
+    PORTB &= ~(1<<PB1);
+    break;
+  case 5:
+    DDRB  |=  (1<<PB2);
+    PORTB &= ~(1<<PB2);
+    break;
+  }
+
+  expander_select_row(row);
+}
+
diff --git a/keyboards/ergodox/ergodone/rules.mk b/keyboards/ergodox/ergodone/rules.mk
new file mode 100644
index 0000000000..e7fd4e0aba
--- /dev/null
+++ b/keyboards/ergodox/ergodone/rules.mk
@@ -0,0 +1,91 @@
+#----------------------------------------------------------------------------
+# 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    \
+    expander.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=4096
+
+# Build Options
+#   comment out to disable the options.
+#
+BOOTMAGIC_ENABLE        = yes	# Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE         = yes	# Mouse keys(+4700)
+EXTRAKEY_ENABLE         = yes	# Audio control and System control(+450)
+CONSOLE_ENABLE          = no	# Console for debug(+400)
+COMMAND_ENABLE          = no  # Commands for debug and configuration
+SLEEP_LED_ENABLE        = no  # Breathing sleep LED during USB suspend
+NKRO_ENABLE             = yes	# USB Nkey Rollover - not yet supported in LUFA
+USB_6KRO_ENABLE         = no  # USB 6key Rollover
+BACKLIGHT_ENABLE        = no	# Enable keyboard backlight functionality
+KEYMAP_IN_EEPROM_ENABLE = no 	# External keymap in eeprom
+KEYMAP_SECTION_ENABLE   = no	# Fixed address keymap for keymap editor
+SOFTPWM_LED_ENABLE      = no  # Enable SoftPWM to drive backlight
+FADING_LED_ENABLE       = no  # Enable fading backlight
+BREATHING_LED_ENABLE    = no  # Enable breathing backlight
+LEDMAP_ENABLE           = no	# Enable LED mapping
+LEDMAP_IN_EEPROM_ENABLE = no  # Read LED mapping from eeprom
+ONEHAND_ENABLE          = no  # Disable Onehand
+RGBLIGHT_ENABLE         = no
+MIDI_ENABLE             = no
diff --git a/keyboards/ergodox/ergodone/twimaster.c b/keyboards/ergodox/ergodone/twimaster.c
new file mode 100644
index 0000000000..f91c08e6e4
--- /dev/null
+++ b/keyboards/ergodox/ergodone/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 */