new handwired keyboard - Dactyl Manuform (#2516)

* adding new handwired keyboard: dactyl-manuform

* adding qwerty layout

* updating readme file.

18 files changed, 1758 insertions, 0 deletions

diff --git a/keyboards/handwired/dactyl_manuform/config.h b/keyboards/handwired/dactyl_manuform/config.h
new file mode 100644
index 0000000000..093d6680bf
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/config.h
@@ -0,0 +1,87 @@
+/*
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+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
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x3060
+#define DEVICE_VER      0x0001
+#define MANUFACTURER    tshort
+#define PRODUCT         Dactyl-Manuform
+#define DESCRIPTION     A split keyboard for the cheap makers
+
+/* key matrix size */
+// Rows are doubled-up
+#define MATRIX_ROWS 10
+#define MATRIX_COLS 5
+
+// wiring of each half
+#define MATRIX_ROW_PINS { F7, B1, B3, B2, B6 }
+// #define MATRIX_COL_PINS { B5, B4, E6, D7, C6 }
+#define MATRIX_COL_PINS { C6, D7, E6, B4, B5 }
+
+/* define if matrix has ghost */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+// #define BACKLIGHT_LEVELS 3
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCING_DELAY 5
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* key combination for command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/* ws2812 RGB LED */
+#define RGB_DI_PIN D3
+#define RGBLIGHT_TIMER
+#define RGBLED_NUM 12    // Number of LEDs
+#define ws2812_PORTREG  PORTD
+#define ws2812_DDRREG   DDRD
+
+/*
+ * 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
+
+
+#endif
diff --git a/keyboards/handwired/dactyl_manuform/dactyl_manuform.c b/keyboards/handwired/dactyl_manuform/dactyl_manuform.c
new file mode 100644
index 0000000000..17caecb4fd
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/dactyl_manuform.c
@@ -0,0 +1,23 @@
+#include "dactyl_manuform.h"
+
+
+#ifdef SSD1306OLED
+void led_set_kb(uint8_t usb_led) {
+    // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
+    led_set_user(usb_led);
+}
+#endif
+
+void matrix_init_kb(void) {
+
+    // // green led on
+    // DDRD |= (1<<5);
+    // PORTD &= ~(1<<5);
+
+    // // orange led on
+    // DDRB |= (1<<0);
+    // PORTB &= ~(1<<0);
+
+	matrix_init_user();
+};
+
diff --git a/keyboards/handwired/dactyl_manuform/dactyl_manuform.h b/keyboards/handwired/dactyl_manuform/dactyl_manuform.h
new file mode 100644
index 0000000000..1979098235
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/dactyl_manuform.h
@@ -0,0 +1,71 @@
+#ifndef REV2_H
+#define REV2_H
+
+#include "dactyl_manuform.h"
+
+//void promicro_bootloader_jmp(bool program);
+#include "quantum.h"
+
+
+#ifdef USE_I2C
+#include <stddef.h>
+#ifdef __AVR__
+	#include <avr/io.h>
+	#include <avr/interrupt.h>
+#endif
+#endif
+
+//void promicro_bootloader_jmp(bool program);
+
+#ifndef FLIP_HALF
+
+#define KEYMAP( \
+	L00, L01, L02, L03, L04,                     R00, R01, R02, R03, R04, \
+	L10, L11, L12, L13, L14,                     R10, R11, R12, R13, R14, \
+	L20, L21, L22, L23, L24,                     R20, R21, R22, R23, R24, \
+	     L31, L32,                                         R33, R34,      \
+                       L33, L34,                     R31, R32,                \
+                                 L44, L42, R43, R41,                          \
+                                 L43, L41, R44, R42                           \
+	) \
+	{ \
+		{ L00, L01, L02, L03, L04 },    \
+		{ L10, L11, L12, L13, L14 },    \
+		{ L20, L21, L22, L23, L24 },    \
+		{ KC_NO, L31, L32, L33, L34 },  \
+		{ KC_NO, L41, L42, L43, L44 },  \
+\
+		{ R04, R03, R02, R01, R00 },    \
+		{ R14, R13, R12, R11, R10 },    \
+		{ R24, R23, R22, R21, R20 },    \
+		{ KC_NO, R34, R33, R32, R31  }, \
+		{ KC_NO, R44, R43, R42, R41  }  \
+	}
+#else
+
+#define KEYMAP( \
+	L00, L01, L02, L03, L04,                      R00, R01, R02, R03, R04, \
+	L10, L11, L12, L13, L14,                      R10, R11, R12, R13, R14, \
+	L20, L21, L22, L23, L24,                      R20, R21, R22, R23, R24, \
+	     L31, L32,                                          L33, L34, \
+                       R31, R32,                     R33, R34, \
+                                 L41, L42, L43, L44, \
+                                 R41, R42, R43, R44 \
+	) \
+	{ \
+		{ L00, L01, L02, L03, L04 }, \
+		{ L10, L11, L12, L13, L14 }, \
+		{ L20, L21, L22, L23, L24 }, \
+		{ KC_NO, L31, L32, L33, L34 }, \
+		{ KC_NO, L41, L42, L43, L44 }, \
+\
+		{ R00, R01, R02, R03, R04 }, \
+		{ R10, R11, R12, R13, R14 }, \
+		{ R20, R21, R22, R23, R24 }, \
+		{ KC_NO, R31, R32, R33, R34  }, \
+		{ KC_NO, R41, R42, R43, R44  }  \
+	}
+
+#endif
+
+#endif
diff --git a/keyboards/handwired/dactyl_manuform/i2c.c b/keyboards/handwired/dactyl_manuform/i2c.c
new file mode 100644
index 0000000000..084c890c40
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/i2c.c
@@ -0,0 +1,162 @@
+#include <util/twi.h>
+#include <avr/io.h>
+#include <stdlib.h>
+#include <avr/interrupt.h>
+#include <util/twi.h>
+#include <stdbool.h>
+#include "i2c.h"
+
+#ifdef USE_I2C
+
+// Limits the amount of we wait for any one i2c transaction.
+// Since were running SCL line 100kHz (=> 10μs/bit), and each transactions is
+// 9 bits, a single transaction will take around 90μs to complete.
+//
+// (F_CPU/SCL_CLOCK)  =>  # of μC cycles to transfer a bit
+// poll loop takes at least 8 clock cycles to execute
+#define I2C_LOOP_TIMEOUT (9+1)*(F_CPU/SCL_CLOCK)/8
+
+#define BUFFER_POS_INC() (slave_buffer_pos = (slave_buffer_pos+1)%SLAVE_BUFFER_SIZE)
+
+volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
+
+static volatile uint8_t slave_buffer_pos;
+static volatile bool slave_has_register_set = false;
+
+// Wait for an i2c operation to finish
+inline static
+void i2c_delay(void) {
+  uint16_t lim = 0;
+  while(!(TWCR & (1<<TWINT)) && lim < I2C_LOOP_TIMEOUT)
+    lim++;
+
+  // easier way, but will wait slightly longer
+  // _delay_us(100);
+}
+
+// Setup twi to run at 100kHz
+void i2c_master_init(void) {
+  // no prescaler
+  TWSR = 0;
+  // Set TWI clock frequency to SCL_CLOCK. Need TWBR>10.
+  // Check datasheets for more info.
+  TWBR = ((F_CPU/SCL_CLOCK)-16)/2;
+}
+
+// Start a transaction with the given i2c slave address. The direction of the
+// transfer is set with I2C_READ and I2C_WRITE.
+// returns: 0 => success
+//          1 => error
+uint8_t i2c_master_start(uint8_t address) {
+  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTA);
+
+  i2c_delay();
+
+  // check that we started successfully
+  if ( (TW_STATUS != TW_START) && (TW_STATUS != TW_REP_START))
+    return 1;
+
+  TWDR = address;
+  TWCR = (1<<TWINT) | (1<<TWEN);
+
+  i2c_delay();
+
+  if ( (TW_STATUS != TW_MT_SLA_ACK) && (TW_STATUS != TW_MR_SLA_ACK) )
+    return 1; // slave did not acknowledge
+  else
+    return 0; // success
+}
+
+
+// Finish the i2c transaction.
+void i2c_master_stop(void) {
+  TWCR = (1<<TWINT) | (1<<TWEN) | (1<<TWSTO);
+
+  uint16_t lim = 0;
+  while(!(TWCR & (1<<TWSTO)) && lim < I2C_LOOP_TIMEOUT)
+    lim++;
+}
+
+// Write one byte to the i2c slave.
+// returns 0 => slave ACK
+//         1 => slave NACK
+uint8_t i2c_master_write(uint8_t data) {
+  TWDR = data;
+  TWCR = (1<<TWINT) | (1<<TWEN);
+
+  i2c_delay();
+
+  // check if the slave acknowledged us
+  return (TW_STATUS == TW_MT_DATA_ACK) ? 0 : 1;
+}
+
+// Read one byte from the i2c slave. If ack=1 the slave is acknowledged,
+// if ack=0 the acknowledge bit is not set.
+// returns: byte read from i2c device
+uint8_t i2c_master_read(int ack) {
+  TWCR = (1<<TWINT) | (1<<TWEN) | (ack<<TWEA);
+
+  i2c_delay();
+  return TWDR;
+}
+
+void i2c_reset_state(void) {
+  TWCR = 0;
+}
+
+void i2c_slave_init(uint8_t address) {
+  TWAR = address << 0; // slave i2c address
+  // TWEN  - twi enable
+  // TWEA  - enable address acknowledgement
+  // TWINT - twi interrupt flag
+  // TWIE  - enable the twi interrupt
+  TWCR = (1<<TWIE) | (1<<TWEA) | (1<<TWINT) | (1<<TWEN);
+}
+
+ISR(TWI_vect);
+
+ISR(TWI_vect) {
+  uint8_t ack = 1;
+  switch(TW_STATUS) {
+    case TW_SR_SLA_ACK:
+      // this device has been addressed as a slave receiver
+      slave_has_register_set = false;
+      break;
+
+    case TW_SR_DATA_ACK:
+      // this device has received data as a slave receiver
+      // The first byte that we receive in this transaction sets the location
+      // of the read/write location of the slaves memory that it exposes over
+      // i2c.  After that, bytes will be written at slave_buffer_pos, incrementing
+      // slave_buffer_pos after each write.
+      if(!slave_has_register_set) {
+        slave_buffer_pos = TWDR;
+        // don't acknowledge the master if this memory loctaion is out of bounds
+        if ( slave_buffer_pos >= SLAVE_BUFFER_SIZE ) {
+          ack = 0;
+          slave_buffer_pos = 0;
+        }
+        slave_has_register_set = true;
+      } else {
+        i2c_slave_buffer[slave_buffer_pos] = TWDR;
+        BUFFER_POS_INC();
+      }
+      break;
+
+    case TW_ST_SLA_ACK:
+    case TW_ST_DATA_ACK:
+      // master has addressed this device as a slave transmitter and is
+      // requesting data.
+      TWDR = i2c_slave_buffer[slave_buffer_pos];
+      BUFFER_POS_INC();
+      break;
+
+    case TW_BUS_ERROR: // something went wrong, reset twi state
+      TWCR = 0;
+    default:
+      break;
+  }
+  // Reset everything, so we are ready for the next TWI interrupt
+  TWCR |= (1<<TWIE) | (1<<TWINT) | (ack<<TWEA) | (1<<TWEN);
+}
+#endif
diff --git a/keyboards/handwired/dactyl_manuform/i2c.h b/keyboards/handwired/dactyl_manuform/i2c.h
new file mode 100644
index 0000000000..c15b6bc506
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/i2c.h
@@ -0,0 +1,49 @@
+#ifndef I2C_H
+#define I2C_H
+
+#include <stdint.h>
+
+#ifndef F_CPU
+#define F_CPU 16000000UL
+#endif
+
+#define I2C_READ 1
+#define I2C_WRITE 0
+
+#define I2C_ACK 1
+#define I2C_NACK 0
+
+#define SLAVE_BUFFER_SIZE 0x10
+
+// i2c SCL clock frequency
+#define SCL_CLOCK  400000L
+
+extern volatile uint8_t i2c_slave_buffer[SLAVE_BUFFER_SIZE];
+
+void i2c_master_init(void);
+uint8_t i2c_master_start(uint8_t address);
+void i2c_master_stop(void);
+uint8_t i2c_master_write(uint8_t data);
+uint8_t i2c_master_read(int);
+void i2c_reset_state(void);
+void i2c_slave_init(uint8_t address);
+
+
+static inline unsigned char i2c_start_read(unsigned char addr) {
+  return i2c_master_start((addr << 1) | I2C_READ);
+}
+
+static inline unsigned char i2c_start_write(unsigned char addr) {
+  return i2c_master_start((addr << 1) | I2C_WRITE);
+}
+
+// from SSD1306 scrips
+extern unsigned char i2c_rep_start(unsigned char addr);
+extern void i2c_start_wait(unsigned char addr);
+extern unsigned char i2c_readAck(void);
+extern unsigned char i2c_readNak(void);
+extern unsigned char i2c_read(unsigned char ack);
+
+#define i2c_read(ack)  (ack) ? i2c_readAck() : i2c_readNak();
+
+#endif
diff --git a/keyboards/handwired/dactyl_manuform/keymaps/default/config.h b/keyboards/handwired/dactyl_manuform/keymaps/default/config.h
new file mode 100644
index 0000000000..216917ed71
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/keymaps/default/config.h
@@ -0,0 +1,37 @@
+/*
+This is the c configuration file for the keymap
+
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+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_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/* Use I2C or Serial, not both */
+
+#define USE_SERIAL
+// #define USE_I2C
+
+/* Select hand configuration */
+
+// #define MASTER_LEFT
+// #define MASTER_RIGHT
+#define EE_HANDS
+
+#endif
diff --git a/keyboards/handwired/dactyl_manuform/keymaps/default/keymap.c b/keyboards/handwired/dactyl_manuform/keymaps/default/keymap.c
new file mode 100644
index 0000000000..0a74323ab9
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/keymaps/default/keymap.c
@@ -0,0 +1,119 @@
+#include "dactyl_manuform.h"
+#include "action_layer.h"
+#include "eeconfig.h"
+
+extern keymap_config_t keymap_config;
+
+#define _BASE 0
+#define _NAV 1
+#define _NUM 2
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  NAV,
+  NUM,
+};
+
+// Fillers to make layering more clear
+#define _______ KC_TRNS
+#define XXXXXXX KC_NO
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Base (qwerty)
+ * ,----------------------------------,                             ,----------------------------------,
+ * |   Q  |   W  |   E  |   R  |   T  |                             |   Y  |   U  |   I  |   O  |   P  | 
+ * |------+------+------+------+------|                             |-------------+------+------+------|
+ * |   A  |   S  |   D  |   F  |   G  |                             |   H  |   J  |   K  |   L  |   ;  |
+ * |------+------+------+------+------|                             |------|------+------+------+------|
+ * |   Z  |   X  |   C  |   V  |   B  |                             |   N  |   M  |   ,  |   .  |   '  |
+ * |------+------+------+-------------,                             ,-------------+------+------+------,
+ *        |  [   |   ]  |                                                         |   -  |   =  |
+ *        '------+------'-------------'                             '-------------'------+------'
+ *                      | esc  |  bs  |                             | space|enter |
+ *                      |  +   |   +  |                             |  +   |  +   |
+ *                      | shift| ctrl |                             | alt  |shift |
+ *                      '------+------'                             '------+------'
+ *                                    '------+------' '------+------'
+ *                                    |  tab | home | | end  |  del |
+ *                                    |------+------' '------+------|
+ *                                    |\(NAV)|   ~  | | gui  |/(NUM)|
+ *                                    '------+------' '------+------'
+ */
+
+[_BASE] = KEYMAP( \
+  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,                                     KC_Y,    KC_U,    KC_I,    KC_O,    KC_P, \
+  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,                                     KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, \
+  KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,                                     KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_QUOT, \
+           KC_LBRC, KC_RBRC,                                                             KC_MINS, KC_EQL,       \
+                             SFT_T(KC_ESC),  CTL_T(KC_BSPC),  ALT_T(KC_SPC),  SFT_T(KC_ENT),                    \
+                                   KC_TAB,            KC_HOME, KC_END,  KC_DEL,                                 \
+                                   LT(_NAV, KC_BSLS), KC_GRV,  KC_LGUI, LT(_NUM, KC_SLSH)                       \
+),
+
+/* Navigation layer
+ * ,----------------------------------,                             ,----------------------------------,
+ * |      |      |  mup |      |      |                             |      |      |  up  |      |      | 
+ * |------+------+------+------+------|                             |-------------+------+------+------|
+ * |      | mleft| mdown|mright|      |                             |      | left | down |right |      |
+ * |------+------+------+------+------|                             |------|------+------+------+------|
+ * |      |      |      |      |      |                             |      |      |      |      |      |
+ * |------+------+------+-------------,                             ,-------------+------+------+------,
+ *        |      |      |                                                         | mbtn |mbtn2 |
+ *        '------+------'-------------'                             '-------------'------+------'
+ *                      |      |      |                             |      |      |
+ *                      |      |      |                             |      |      |
+ *                      |      |      |                             |      |      |
+ *                      '------+------'                             '------+------'
+ *                                    '------+------' '------+------'
+ *                                    |  tab | home | | end  |  del |
+ *                                    '------+------' '------+------'
+ *                                    |\(NAV)|   ~  | | gui  |/(NUM)|
+ *                                    '------+------' '------+------'
+ */
+
+[_NAV] = KEYMAP( \
+  KC_TRNS,  KC_TRNS,     KC_MS_UP,   KC_TRNS,     KC_TRNS, KC_TRNS, KC_TRNS,  KC_UP,   KC_TRNS, KC_TRNS, \
+  KC_TRNS,  KC_MS_LEFT,  KC_MS_DOWN, KC_MS_RIGHT, KC_TRNS, KC_TRNS, KC_LEFT, KC_DOWN, KC_RIGHT, KC_TRNS, \
+  KC_TRNS,  KC_TRNS,     KC_TRNS,    KC_TRNS,     KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, \
+            KC_TRNS,  KC_TRNS,                                      KC_MS_BTN1, KC_MS_BTN2, \
+                               KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+                               KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+                               KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+),
+/* Numbers layer
+ * ,----------------------------------,                             ,----------------------------------,
+ * | F1   | F2   | F3   | F4   | F5   |                             |  F6  | F7   |  F8  |  F9  |  F10 |
+ * |------+------+------+------+------|                             |-------------+------+------+------|
+ * |  1   |  2   |  3   |  4   |  5   |                             |  6   |  7   |  8   |  9   |  10  |
+ * |------+------+------+------+------|                             |------|------+------+------+------|
+ * |  !   |  @   |  #   |  $   |  %   |                             |  ^   |  &   |  *   |  (   |  )   |
+ * |------+------+------+-------------,                             ,-------------+------+------+------,
+ *        | F11  | F12  |                                                         |      |      |
+ *        '------+------'-------------'                             '-------------'------+------'
+ *                      |      |      |                             |      |      |
+ *                      |      |      |                             |      |      |
+ *                      |      |      |                             |      |      |
+ *                      '------+------'                             '------+------'
+ *                                    '------+------' '------+------'
+ *                                    |  tab | home | | end  |  del |
+ *                                    '------+------' '------+------'
+ *                                    |\(NAV)|   ~  | | gui  |/(NUM)|
+ *                                    '------+------' '------+------'
+ */
+[_NUM] = KEYMAP( \
+  KC_F1, KC_F2, KC_F3, KC_F4, KC_F5,  KC_F6,  KC_F7,    KC_F8,   KC_F9,   KC_F10, \
+  KC_1,  KC_2,  KC_3,  KC_4,  KC_5,   KC_6,   KC_7,     KC_8,    KC_9,    KC_0, \
+  KC_EXLM,  KC_AT,  KC_HASH,  KC_DLR, KC_PERC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_UNDS, \
+            KC_F11,  KC_F12,                                     KC_TRNS, KC_TRNS, \
+                             KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+                             KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+                             KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+)
+};
+
+void persistent_default_layer_set(uint16_t default_layer) {
+  eeconfig_update_default_layer(default_layer);
+  default_layer_set(default_layer);
+}
+
diff --git a/keyboards/handwired/dactyl_manuform/keymaps/default/rules.mk b/keyboards/handwired/dactyl_manuform/keymaps/default/rules.mk
new file mode 100644
index 0000000000..457a3d01d4
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/keymaps/default/rules.mk
@@ -0,0 +1,3 @@
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif
diff --git a/keyboards/handwired/dactyl_manuform/keymaps/dvorak/config.h b/keyboards/handwired/dactyl_manuform/keymaps/dvorak/config.h
new file mode 100644
index 0000000000..216917ed71
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/keymaps/dvorak/config.h
@@ -0,0 +1,37 @@
+/*
+This is the c configuration file for the keymap
+
+Copyright 2012 Jun Wako <wakojun@gmail.com>
+Copyright 2015 Jack Humbert
+
+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_USER_H
+#define CONFIG_USER_H
+
+#include "../../config.h"
+
+/* Use I2C or Serial, not both */
+
+#define USE_SERIAL
+// #define USE_I2C
+
+/* Select hand configuration */
+
+// #define MASTER_LEFT
+// #define MASTER_RIGHT
+#define EE_HANDS
+
+#endif
diff --git a/keyboards/handwired/dactyl_manuform/keymaps/dvorak/keymap.c b/keyboards/handwired/dactyl_manuform/keymaps/dvorak/keymap.c
new file mode 100644
index 0000000000..e0852f8e06
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/keymaps/dvorak/keymap.c
@@ -0,0 +1,119 @@
+#include "dactyl_manuform.h"
+#include "action_layer.h"
+#include "eeconfig.h"
+
+extern keymap_config_t keymap_config;
+
+#define _BASE 0
+#define _NAV 1
+#define _NUM 2
+
+enum custom_keycodes {
+  QWERTY = SAFE_RANGE,
+  NAV,
+  NUM,
+};
+
+// Fillers to make layering more clear
+#define _______ KC_TRNS
+#define XXXXXXX KC_NO
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Base (dvorak)
+ * ,----------------------------------,                             ,----------------------------------,
+ * |   '  |   ,  |   .  |   p  |   y  |                             |   f  |   g  |   c  |   r  |   l  | 
+ * |------+------+------+------+------|                             |-------------+------+------+------|
+ * |   a  |   o  |   e  |   u  |   i  |                             |   d  |   h  |   t  |   n  |   s  |
+ * |------+------+------+------+------|                             |------|------+------+------+------|
+ * |   ;  |   q  |   j  |   k  |   x  |                             |   b  |   m  |   w  |   v  |   z  |
+ * |------+------+------+-------------,                             ,-------------+------+------+------,
+ *        |  [   |   ]  |                                                         |   -  |   =  |
+ *        '------+------'-------------'                             '-------------'------+------'
+ *                      | esc  |  bs  |                             | space|enter |
+ *                      |  +   |   +  |                             |  +   |  +   |
+ *                      | shift| ctrl |                             | alt  |shift |
+ *                      '------+------'                             '------+------'
+ *                                    '------+------' '------+------'
+ *                                    |  tab | home | | end  |  del |
+ *                                    |------+------' '------+------|
+ *                                    |\(NAV)|   ~  | | gui  |/(NUM)|
+ *                                    '------+------' '------+------'
+ */
+
+[_BASE] = KEYMAP( \
+  KC_QUOT, KC_COMM, KC_DOT,  KC_P, KC_Y,                                     KC_F, KC_G, KC_C,    KC_R,   KC_L, \
+  KC_A,    KC_O,    KC_E,    KC_U, KC_I,                                     KC_D, KC_H, KC_T,    KC_N,   KC_S, \
+  KC_SCLN, KC_Q,    KC_J,    KC_K, KC_X,                                     KC_B, KC_M, KC_W,    KC_V,   KC_Z, \
+           KC_LBRC, KC_RBRC,                                                             KC_MINS, KC_EQL,       \
+                             SFT_T(KC_ESC),  CTL_T(KC_BSPC),  ALT_T(KC_SPC),  SFT_T(KC_ENT),                    \
+                                   KC_TAB,            KC_HOME, KC_END,  KC_DEL,                                 \
+                                   LT(_NAV, KC_BSLS), KC_GRV,  KC_LGUI, LT(_NUM, KC_SLSH)                       \
+),
+
+/* Navigation layer
+ * ,----------------------------------,                             ,----------------------------------,
+ * |      |      |  mup |      |      |                             |      |      |  up  |      |      | 
+ * |------+------+------+------+------|                             |-------------+------+------+------|
+ * |      | mleft| mdown|mright|      |                             |      | left | down |right |      |
+ * |------+------+------+------+------|                             |------|------+------+------+------|
+ * |      |      |      |      |      |                             |      |      |      |      |      |
+ * |------+------+------+-------------,                             ,-------------+------+------+------,
+ *        |      |      |                                                         | mbtn |mbtn2 |
+ *        '------+------'-------------'                             '-------------'------+------'
+ *                      |      |      |                             |      |      |
+ *                      |      |      |                             |      |      |
+ *                      |      |      |                             |      |      |
+ *                      '------+------'                             '------+------'
+ *                                    '------+------' '------+------'
+ *                                    |  tab | home | | end  |  del |
+ *                                    '------+------' '------+------'
+ *                                    |\(NAV)|   ~  | | gui  |/(NUM)|
+ *                                    '------+------' '------+------'
+ */
+
+[_NAV] = KEYMAP( \
+  KC_TRNS,  KC_TRNS,     KC_MS_UP,   KC_TRNS,     KC_TRNS, KC_TRNS, KC_TRNS,  KC_UP,   KC_TRNS, KC_TRNS, \
+  KC_TRNS,  KC_MS_LEFT,  KC_MS_DOWN, KC_MS_RIGHT, KC_TRNS, KC_TRNS, KC_LEFT, KC_DOWN, KC_RIGHT, KC_TRNS, \
+  KC_TRNS,  KC_TRNS,     KC_TRNS,    KC_TRNS,     KC_TRNS, KC_TRNS, KC_TRNS,  KC_TRNS, KC_TRNS, KC_TRNS, \
+            KC_TRNS,  KC_TRNS,                                      KC_MS_BTN1, KC_MS_BTN2, \
+                               KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+                               KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+                               KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+),
+/* Numbers layer
+ * ,----------------------------------,                             ,----------------------------------,
+ * | F1   | F2   | F3   | F4   | F5   |                             |  F6  | F7   |  F8  |  F9  |  F10 |
+ * |------+------+------+------+------|                             |-------------+------+------+------|
+ * |  1   |  2   |  3   |  4   |  5   |                             |  6   |  7   |  8   |  9   |  10  |
+ * |------+------+------+------+------|                             |------|------+------+------+------|
+ * |  !   |  @   |  #   |  $   |  %   |                             |  ^   |  &   |  *   |  (   |  )   |
+ * |------+------+------+-------------,                             ,-------------+------+------+------,
+ *        | F11  | F12  |                                                         |      |      |
+ *        '------+------'-------------'                             '-------------'------+------'
+ *                      |      |      |                             |      |      |
+ *                      |      |      |                             |      |      |
+ *                      |      |      |                             |      |      |
+ *                      '------+------'                             '------+------'
+ *                                    '------+------' '------+------'
+ *                                    |  tab | home | | end  |  del |
+ *                                    '------+------' '------+------'
+ *                                    |\(NAV)|   ~  | | gui  |/(NUM)|
+ *                                    '------+------' '------+------'
+ */
+[_NUM] = KEYMAP( \
+  KC_F1, KC_F2, KC_F3, KC_F4, KC_F5,  KC_F6,  KC_F7,    KC_F8,   KC_F9,   KC_F10, \
+  KC_1,  KC_2,  KC_3,  KC_4,  KC_5,   KC_6,   KC_7,     KC_8,    KC_9,    KC_0, \
+  KC_EXLM,  KC_AT,  KC_HASH,  KC_DLR, KC_PERC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_UNDS, \
+            KC_F11,  KC_F12,                                     KC_TRNS, KC_TRNS, \
+                             KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+                             KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+                             KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
+)
+};
+
+void persistent_default_layer_set(uint16_t default_layer) {
+  eeconfig_update_default_layer(default_layer);
+  default_layer_set(default_layer);
+}
+
diff --git a/keyboards/handwired/dactyl_manuform/keymaps/dvorak/rules.mk b/keyboards/handwired/dactyl_manuform/keymaps/dvorak/rules.mk
new file mode 100644
index 0000000000..457a3d01d4
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/keymaps/dvorak/rules.mk
@@ -0,0 +1,3 @@
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif
diff --git a/keyboards/handwired/dactyl_manuform/matrix.c b/keyboards/handwired/dactyl_manuform/matrix.c
new file mode 100644
index 0000000000..c3bfe80423
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/matrix.c
@@ -0,0 +1,466 @@
+/*
+Copyright 2012 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/>.
+*/
+
+/*
+ * scan matrix
+ */
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include "wait.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#include "split_util.h"
+#include "pro_micro.h"
+#include "config.h"
+#include "timer.h"
+
+#ifdef USE_I2C
+#  include "i2c.h"
+#else // USE_SERIAL
+#  include "serial.h"
+#endif
+
+#ifndef DEBOUNCING_DELAY
+#   define DEBOUNCING_DELAY 5
+#endif
+
+#if (DEBOUNCING_DELAY > 0)
+    static uint16_t debouncing_time;
+    static bool debouncing = false;
+#endif
+
+#if (MATRIX_COLS <= 8)
+#    define print_matrix_header()  print("\nr/c 01234567\n")
+#    define print_matrix_row(row)  print_bin_reverse8(matrix_get_row(row))
+#    define matrix_bitpop(i)       bitpop(matrix[i])
+#    define ROW_SHIFTER ((uint8_t)1)
+#else
+#    error "Currently only supports 8 COLS"
+#endif
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+#define ERROR_DISCONNECT_COUNT 5
+
+#define ROWS_PER_HAND (MATRIX_ROWS/2)
+
+static uint8_t error_count = 0;
+
+static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+
+/* matrix state(1:on, 0:off) */
+static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+#if (DIODE_DIRECTION == COL2ROW)
+    static void init_cols(void);
+    static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
+    static void unselect_rows(void);
+    static void select_row(uint8_t row);
+    static void unselect_row(uint8_t row);
+#elif (DIODE_DIRECTION == ROW2COL)
+    static void init_rows(void);
+    static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
+    static void unselect_cols(void);
+    static void unselect_col(uint8_t col);
+    static void select_col(uint8_t col);
+#endif
+
+__attribute__ ((weak))
+void matrix_init_kb(void) {
+    matrix_init_user();
+}
+
+__attribute__ ((weak))
+void matrix_scan_kb(void) {
+    matrix_scan_user();
+}
+
+__attribute__ ((weak))
+void matrix_init_user(void) {
+}
+
+__attribute__ ((weak))
+void matrix_scan_user(void) {
+}
+
+inline
+uint8_t matrix_rows(void)
+{
+    return MATRIX_ROWS;
+}
+
+inline
+uint8_t matrix_cols(void)
+{
+    return MATRIX_COLS;
+}
+
+void matrix_init(void)
+{
+#ifdef DISABLE_JTAG
+  // JTAG disable for PORT F. write JTD bit twice within four cycles.
+  MCUCR |= (1<<JTD);
+  MCUCR |= (1<<JTD);
+#endif
+
+    debug_enable = true;
+    debug_matrix = true;
+    debug_mouse = true;
+    // initialize row and col
+#if (DIODE_DIRECTION == COL2ROW)
+    unselect_rows();
+    init_cols();
+#elif (DIODE_DIRECTION == ROW2COL)
+    unselect_cols();
+    init_rows();
+#endif
+
+    TX_RX_LED_INIT;
+
+    // initialize matrix state: all keys off
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+        matrix[i] = 0;
+        matrix_debouncing[i] = 0;
+    }
+
+    matrix_init_quantum();
+
+}
+
+uint8_t _matrix_scan(void)
+{
+    int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
+#if (DIODE_DIRECTION == COL2ROW)
+    // Set row, read cols
+    for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
+#       if (DEBOUNCING_DELAY > 0)
+            bool matrix_changed = read_cols_on_row(matrix_debouncing+offset, current_row);
+
+            if (matrix_changed) {
+                debouncing = true;
+                debouncing_time = timer_read();
+                PORTD ^= (1 << 2);
+            }
+
+#       else
+            read_cols_on_row(matrix+offset, current_row);
+#       endif
+
+    }
+
+#elif (DIODE_DIRECTION == ROW2COL)
+    // Set col, read rows
+    for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
+#       if (DEBOUNCING_DELAY > 0)
+            bool matrix_changed = read_rows_on_col(matrix_debouncing+offset, current_col);
+            if (matrix_changed) {
+                debouncing = true;
+                debouncing_time = timer_read();
+            }
+#       else
+             read_rows_on_col(matrix+offset, current_col);
+#       endif
+
+    }
+#endif
+
+#   if (DEBOUNCING_DELAY > 0)
+        if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
+            for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
+                matrix[i+offset] = matrix_debouncing[i+offset];
+            }
+            debouncing = false;
+        }
+#   endif
+
+    return 1;
+}
+
+#ifdef USE_I2C
+
+// Get rows from other half over i2c
+int i2c_transaction(void) {
+    int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
+
+    int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
+    if (err) goto i2c_error;
+
+    // start of matrix stored at 0x00
+    err = i2c_master_write(0x00);
+    if (err) goto i2c_error;
+
+    // Start read
+    err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
+    if (err) goto i2c_error;
+
+    if (!err) {
+        int i;
+        for (i = 0; i < ROWS_PER_HAND-1; ++i) {
+            matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
+        }
+        matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
+        i2c_master_stop();
+    } else {
+i2c_error: // the cable is disconnceted, or something else went wrong
+        i2c_reset_state();
+        return err;
+    }
+
+    return 0;
+}
+
+#else // USE_SERIAL
+
+int serial_transaction(void) {
+    int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
+
+    if (serial_update_buffers()) {
+        return 1;
+    }
+
+    for (int i = 0; i < ROWS_PER_HAND; ++i) {
+        matrix[slaveOffset+i] = serial_slave_buffer[i];
+    }
+    return 0;
+}
+#endif
+
+uint8_t matrix_scan(void)
+{
+    uint8_t ret = _matrix_scan();
+
+#ifdef USE_I2C
+    if( i2c_transaction() ) {
+#else // USE_SERIAL
+    if( serial_transaction() ) {
+#endif
+        // turn on the indicator led when halves are disconnected
+        TXLED1;
+
+        error_count++;
+
+        if (error_count > ERROR_DISCONNECT_COUNT) {
+            // reset other half if disconnected
+            int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
+            for (int i = 0; i < ROWS_PER_HAND; ++i) {
+                matrix[slaveOffset+i] = 0;
+            }
+        }
+    } else {
+        // turn off the indicator led on no error
+        TXLED0;
+        error_count = 0;
+    }
+    matrix_scan_quantum();
+    return ret;
+}
+
+void matrix_slave_scan(void) {
+    _matrix_scan();
+
+    int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
+
+#ifdef USE_I2C
+    for (int i = 0; i < ROWS_PER_HAND; ++i) {
+        i2c_slave_buffer[i] = matrix[offset+i];
+    }
+#else // USE_SERIAL
+    for (int i = 0; i < ROWS_PER_HAND; ++i) {
+        serial_slave_buffer[i] = matrix[offset+i];
+    }
+#endif
+}
+
+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;
+}
+
+#if (DIODE_DIRECTION == COL2ROW)
+
+static void init_cols(void)
+{
+    for(uint8_t x = 0; x < MATRIX_COLS; x++) {
+        uint8_t pin = col_pins[x];
+        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
+    }
+}
+
+static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
+{
+    // Store last value of row prior to reading
+    matrix_row_t last_row_value = current_matrix[current_row];
+
+    // Clear data in matrix row
+    current_matrix[current_row] = 0;
+
+    // Select row and wait for row selecton to stabilize
+    select_row(current_row);
+    wait_us(30);
+
+    // For each col...
+    for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
+
+        // Select the col pin to read (active low)
+        uint8_t pin = col_pins[col_index];
+        uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
+
+        // Populate the matrix row with the state of the col pin
+        current_matrix[current_row] |=  pin_state ? 0 : (ROW_SHIFTER << col_index);
+    }
+
+    // Unselect row
+    unselect_row(current_row);
+
+    return (last_row_value != current_matrix[current_row]);
+}
+
+static void select_row(uint8_t row)
+{
+    uint8_t pin = row_pins[row];
+    _SFR_IO8((pin >> 4) + 1) |=  _BV(pin & 0xF); // OUT
+    _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
+}
+
+static void unselect_row(uint8_t row)
+{
+    uint8_t pin = row_pins[row];
+    _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+    _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
+}
+
+static void unselect_rows(void)
+{
+    for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
+        uint8_t pin = row_pins[x];
+        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
+    }
+}
+
+#elif (DIODE_DIRECTION == ROW2COL)
+
+static void init_rows(void)
+{
+    for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
+        uint8_t pin = row_pins[x];
+        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
+    }
+}
+
+static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
+{
+    bool matrix_changed = false;
+
+    // Select col and wait for col selecton to stabilize
+    select_col(current_col);
+    wait_us(30);
+
+    // For each row...
+    for(uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++)
+    {
+
+        // Store last value of row prior to reading
+        matrix_row_t last_row_value = current_matrix[row_index];
+
+        // Check row pin state
+        if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0)
+        {
+            // Pin LO, set col bit
+            current_matrix[row_index] |= (ROW_SHIFTER << current_col);
+        }
+        else
+        {
+            // Pin HI, clear col bit
+            current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
+        }
+
+        // Determine if the matrix changed state
+        if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
+        {
+            matrix_changed = true;
+        }
+    }
+
+    // Unselect col
+    unselect_col(current_col);
+
+    return matrix_changed;
+}
+
+static void select_col(uint8_t col)
+{
+    uint8_t pin = col_pins[col];
+    _SFR_IO8((pin >> 4) + 1) |=  _BV(pin & 0xF); // OUT
+    _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
+}
+
+static void unselect_col(uint8_t col)
+{
+    uint8_t pin = col_pins[col];
+    _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+    _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
+}
+
+static void unselect_cols(void)
+{
+    for(uint8_t x = 0; x < MATRIX_COLS; x++) {
+        uint8_t pin = col_pins[x];
+        _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
+        _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF); // HI
+    }
+}
+
+#endif
diff --git a/keyboards/handwired/dactyl_manuform/readme.md b/keyboards/handwired/dactyl_manuform/readme.md
new file mode 100644
index 0000000000..354e11ee9d
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/readme.md
@@ -0,0 +1,147 @@
+Dactyl manuform
+======
+
+the [Dactyl-Manuform](https://github.com/tshort/dactyl-keyboard) is a split curved keyboard based on the design of [adereth dactyl](https://github.com/adereth/dactyl-keyboard) and thumb cluster design of the [manuform](https://geekhack.org/index.php?topic=46015.0) keyboard, the hardware is similar to the let's split keyboard. all information needed for making one is in the first link.
+
+## First Time Setup
+
+Download or clone the `qmk_firmware` repo and navigate to its top level directory. Once your build environment is setup, you'll be able to generate the default .hex using:
+
+```
+$ make dactyl_manuform:dvorak
+```
+
+You will see a lot of output and if everything worked correctly you will see the built hex file:
+
+```
+dactyl_manuform_dvorak.hex
+```
+
+If you would like to use one of the alternative keymaps, or create your own, copy one of the existing [keymaps](keymaps/) and run make like so:
+
+```
+$ make dactyl_manuform:YOUR_KEYMAP_NAME
+```
+
+If everything worked correctly you will see a file:
+
+```
+dactyl_manuform_YOUR_KEYMAP_NAME.hex
+```
+
+For more information on customizing keymaps, take a look at the primary documentation for [Customizing Your Keymap](/docs/faq_keymap.md) in the main readme.md.
+
+Required Hardware
+-----------------
+
+Apart from diodes and key switches for the keyboard matrix in each half, you
+will need:
+
+* 2 Arduino Pro Micros. You can find these on AliExpress for ≈3.50USD each.
+* 2 TRRS sockets and 1 TRRS cable, or 2 TRS sockets and 1 TRS cable
+
+Alternatively, you can use any sort of cable and socket that has at least 3
+wires. If you want to use I2C to communicate between halves, you will need a
+cable with at least 4 wires and 2x 4.7kΩ pull-up resistors
+
+Optional Hardware
+-----------------
+A speaker can be hooked-up to either side to the `5` (`C6`) pin and `GND`, and turned on via `AUDIO_ENABLE`.
+
+Wiring
+------
+
+The 3 wires of the TRS/TRRS cable need to connect GND, VCC, and digital pin 3 (i.e.
+PD0 on the ATmega32u4) between the two Pro Micros.
+
+Next, wire your key matrix to any of the remaining 17 IO pins of the pro micro
+and modify the `matrix.c` accordingly.
+
+The wiring for serial:
+
+![serial wiring](https://i.imgur.com/C3D1GAQ.png)
+
+The wiring for i2c:
+
+![i2c wiring](https://i.imgur.com/Hbzhc6E.png)
+
+The pull-up resistors may be placed on either half. It is also possible
+to use 4 resistors and have the pull-ups in both halves, but this is
+unnecessary in simple use cases.
+
+You can change your configuration between serial and i2c by modifying your `config.h` file.
+
+Notes on Software Configuration
+-------------------------------
+
+the keymaps in here are for the 4x5 layout of the keyboard only.
+
+Flashing
+-------
+From the top level `qmk_firmware` directory run `make KEYBOARD:KEYMAP:avrdude` for automatic serial port resolution and flashing.
+Example: `make lets_split/rev2:default:avrdude`
+
+
+Choosing which board to plug the USB cable into (choosing Master)
+--------
+Because the two boards are identical, the firmware has logic to differentiate the left and right board.
+
+It uses two strategies to figure things out: looking at the EEPROM (memory on the chip) or looking if the current board has the usb cable.
+
+The EEPROM approach requires additional setup (flashing the eeprom) but allows you to swap the usb cable to either side.
+
+The USB cable approach is easier to setup and if you just want the usb cable on the left board, you do not need to do anything extra.
+
+### Setting the left hand as master
+If you always plug the usb cable into the left board, nothing extra is needed as this is the default. Comment out `EE_HANDS` and comment out `I2C_MASTER_RIGHT` or `MASTER_RIGHT` if for some reason it was set.
+
+### Setting the right hand as master
+If you always plug the usb cable into the right board, add an extra flag to your `config.h`
+```
+ #define MASTER_RIGHT
+```
+
+### Setting EE_hands to use either hands as master
+If you define `EE_HANDS` in your `config.h`, you will need to set the
+EEPROM for the left and right halves.
+
+The EEPROM is used to store whether the
+half is left handed or right handed. This makes it so that the same firmware
+file will run on both hands instead of having to flash left and right handed
+versions of the firmware to each half. To flash the EEPROM file for the left
+half run:
+```
+avrdude -p atmega32u4 -P $(COM_PORT) -c avr109 -U eeprom:w:eeprom-lefthand.eep
+// or the equivalent in dfu-programmer
+
+```
+and similarly for right half
+```
+avrdude -p atmega32u4 -P $(COM_PORT) -c avr109 -U eeprom:w:eeprom-righhand.eep
+// or the equivalent in dfu-programmer
+```
+
+NOTE: replace `$(COM_PORT)` with the port of your device (e.g. `/dev/ttyACM0`)
+
+After you have flashed the EEPROM, you then need to set `EE_HANDS` in your config.h, rebuild the hex files and reflash.
+
+Note that you need to program both halves, but you have the option of using
+different keymaps for each half. You could program the left half with a QWERTY
+layout and the right half with a Colemak layout using bootmagic's default layout option.
+Then if you connect the left half to a computer by USB the keyboard will use QWERTY and Colemak when the
+right half is connected.
+
+
+Notes on Using Pro Micro 3.3V
+-----------------------------
+
+Do update the `F_CPU` parameter in `rules.mk` to `8000000` which reflects
+the frequency on the 3.3V board.
+
+Also, if the slave board is producing weird characters in certain columns,
+update the following line in `matrix.c` to the following:
+
+```
+// _delay_us(30);  // without this wait read unstable value.
+_delay_us(300);  // without this wait read unstable value.
+```
diff --git a/keyboards/handwired/dactyl_manuform/rules.mk b/keyboards/handwired/dactyl_manuform/rules.mk
new file mode 100644
index 0000000000..6c0949b540
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/rules.mk
@@ -0,0 +1,75 @@
+SRC += matrix.c \
+	   i2c.c \
+	   split_util.c \
+	   serial.c \
+	   ssd1306.c
+
+# MCU name
+#MCU = at90usb1287
+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)
+
+# Bootloader
+#     This definition is optional, and if your keyboard supports multiple bootloaders of
+#     different sizes, comment this out, and the correct address will be loaded 
+#     automatically (+60). See bootloader.mk for all options.
+BOOTLOADER = caterina
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+# Build Options
+#   change to "no" to disable the options, or define them in the Makefile in
+#   the appropriate keymap folder that will get included automatically
+#
+BOOTMAGIC_ENABLE = no       # 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 = yes        # Commands for debug and configuration
+NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+BACKLIGHT_ENABLE = no      # Enable keyboard backlight functionality
+MIDI_ENABLE = no            # MIDI controls
+AUDIO_ENABLE = no           # Audio output on port C6
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+RGBLIGHT_ENABLE = no       # Enable WS2812 RGB underlight.  Do not enable this with audio at the same time.
+SUBPROJECT_rev1 = yes
+USE_I2C = yes
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
+
+CUSTOM_MATRIX = yes
+
+LAYOUTS = ortho_4x12
diff --git a/keyboards/handwired/dactyl_manuform/serial.c b/keyboards/handwired/dactyl_manuform/serial.c
new file mode 100644
index 0000000000..74bcbb6bf6
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/serial.c
@@ -0,0 +1,228 @@
+/*
+ * WARNING: be careful changing this code, it is very timing dependent
+ */
+
+#ifndef F_CPU
+#define F_CPU 16000000
+#endif
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <stdbool.h>
+#include "serial.h"
+
+#ifndef USE_I2C
+
+// Serial pulse period in microseconds. Its probably a bad idea to lower this
+// value.
+#define SERIAL_DELAY 24
+
+uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0};
+uint8_t volatile serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH] = {0};
+
+#define SLAVE_DATA_CORRUPT (1<<0)
+volatile uint8_t status = 0;
+
+inline static
+void serial_delay(void) {
+  _delay_us(SERIAL_DELAY);
+}
+
+inline static
+void serial_output(void) {
+  SERIAL_PIN_DDR |= SERIAL_PIN_MASK;
+}
+
+// make the serial pin an input with pull-up resistor
+inline static
+void serial_input(void) {
+  SERIAL_PIN_DDR  &= ~SERIAL_PIN_MASK;
+  SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
+}
+
+inline static
+uint8_t serial_read_pin(void) {
+  return !!(SERIAL_PIN_INPUT & SERIAL_PIN_MASK);
+}
+
+inline static
+void serial_low(void) {
+  SERIAL_PIN_PORT &= ~SERIAL_PIN_MASK;
+}
+
+inline static
+void serial_high(void) {
+  SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
+}
+
+void serial_master_init(void) {
+  serial_output();
+  serial_high();
+}
+
+void serial_slave_init(void) {
+  serial_input();
+
+  // Enable INT0
+  EIMSK |= _BV(INT0);
+  // Trigger on falling edge of INT0
+  EICRA &= ~(_BV(ISC00) | _BV(ISC01));
+}
+
+// Used by the master to synchronize timing with the slave.
+static
+void sync_recv(void) {
+  serial_input();
+  // This shouldn't hang if the slave disconnects because the
+  // serial line will float to high if the slave does disconnect.
+  while (!serial_read_pin());
+  serial_delay();
+}
+
+// Used by the slave to send a synchronization signal to the master.
+static
+void sync_send(void) {
+  serial_output();
+
+  serial_low();
+  serial_delay();
+
+  serial_high();
+}
+
+// Reads a byte from the serial line
+static
+uint8_t serial_read_byte(void) {
+  uint8_t byte = 0;
+  serial_input();
+  for ( uint8_t i = 0; i < 8; ++i) {
+    byte = (byte << 1) | serial_read_pin();
+    serial_delay();
+    _delay_us(1);
+  }
+
+  return byte;
+}
+
+// Sends a byte with MSB ordering
+static
+void serial_write_byte(uint8_t data) {
+  uint8_t b = 8;
+  serial_output();
+  while( b-- ) {
+    if(data & (1 << b)) {
+      serial_high();
+    } else {
+      serial_low();
+    }
+    serial_delay();
+  }
+}
+
+// interrupt handle to be used by the slave device
+ISR(SERIAL_PIN_INTERRUPT) {
+  sync_send();
+
+  uint8_t checksum = 0;
+  for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
+    serial_write_byte(serial_slave_buffer[i]);
+    sync_send();
+    checksum += serial_slave_buffer[i];
+  }
+  serial_write_byte(checksum);
+  sync_send();
+
+  // wait for the sync to finish sending
+  serial_delay();
+
+  // read the middle of pulses
+  _delay_us(SERIAL_DELAY/2);
+
+  uint8_t checksum_computed = 0;
+  for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
+    serial_master_buffer[i] = serial_read_byte();
+    sync_send();
+    checksum_computed += serial_master_buffer[i];
+  }
+  uint8_t checksum_received = serial_read_byte();
+  sync_send();
+
+  serial_input(); // end transaction
+
+  if ( checksum_computed != checksum_received ) {
+    status |= SLAVE_DATA_CORRUPT;
+  } else {
+    status &= ~SLAVE_DATA_CORRUPT;
+  }
+}
+
+inline
+bool serial_slave_DATA_CORRUPT(void) {
+  return status & SLAVE_DATA_CORRUPT;
+}
+
+// Copies the serial_slave_buffer to the master and sends the
+// serial_master_buffer to the slave.
+//
+// Returns:
+// 0 => no error
+// 1 => slave did not respond
+int serial_update_buffers(void) {
+  // this code is very time dependent, so we need to disable interrupts
+  cli();
+
+  // signal to the slave that we want to start a transaction
+  serial_output();
+  serial_low();
+  _delay_us(1);
+
+  // wait for the slaves response
+  serial_input();
+  serial_high();
+  _delay_us(SERIAL_DELAY);
+
+  // check if the slave is present
+  if (serial_read_pin()) {
+    // slave failed to pull the line low, assume not present
+    sei();
+    return 1;
+  }
+
+  // if the slave is present syncronize with it
+  sync_recv();
+
+  uint8_t checksum_computed = 0;
+  // receive data from the slave
+  for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
+    serial_slave_buffer[i] = serial_read_byte();
+    sync_recv();
+    checksum_computed += serial_slave_buffer[i];
+  }
+  uint8_t checksum_received = serial_read_byte();
+  sync_recv();
+
+  if (checksum_computed != checksum_received) {
+    sei();
+    return 1;
+  }
+
+  uint8_t checksum = 0;
+  // send data to the slave
+  for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) {
+    serial_write_byte(serial_master_buffer[i]);
+    sync_recv();
+    checksum += serial_master_buffer[i];
+  }
+  serial_write_byte(checksum);
+  sync_recv();
+
+  // always, release the line when not in use
+  serial_output();
+  serial_high();
+
+  sei();
+  return 0;
+}
+
+#endif
diff --git a/keyboards/handwired/dactyl_manuform/serial.h b/keyboards/handwired/dactyl_manuform/serial.h
new file mode 100644
index 0000000000..15fe4db7b4
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/serial.h
@@ -0,0 +1,26 @@
+#ifndef MY_SERIAL_H
+#define MY_SERIAL_H
+
+#include "config.h"
+#include <stdbool.h>
+
+/* TODO:  some defines for interrupt setup */
+#define SERIAL_PIN_DDR DDRD
+#define SERIAL_PIN_PORT PORTD
+#define SERIAL_PIN_INPUT PIND
+#define SERIAL_PIN_MASK _BV(PD0)
+#define SERIAL_PIN_INTERRUPT INT0_vect
+
+#define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
+#define SERIAL_MASTER_BUFFER_LENGTH 1
+
+// Buffers for master - slave communication
+extern volatile uint8_t serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH];
+extern volatile uint8_t serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH];
+
+void serial_master_init(void);
+void serial_slave_init(void);
+int serial_update_buffers(void);
+bool serial_slave_data_corrupt(void);
+
+#endif
diff --git a/keyboards/handwired/dactyl_manuform/split_util.c b/keyboards/handwired/dactyl_manuform/split_util.c
new file mode 100644
index 0000000000..346cbc9089
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/split_util.c
@@ -0,0 +1,86 @@
+#include <avr/io.h>
+#include <avr/wdt.h>
+#include <avr/power.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <avr/eeprom.h>
+#include "split_util.h"
+#include "matrix.h"
+#include "keyboard.h"
+#include "config.h"
+#include "timer.h"
+
+#ifdef USE_I2C
+#  include "i2c.h"
+#else
+#  include "serial.h"
+#endif
+
+volatile bool isLeftHand = true;
+
+static void setup_handedness(void) {
+  #ifdef EE_HANDS
+    isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
+  #else
+    // I2C_MASTER_RIGHT is deprecated, use MASTER_RIGHT instead, since this works for both serial and i2c
+    #if defined(I2C_MASTER_RIGHT) || defined(MASTER_RIGHT)
+      isLeftHand = !has_usb();
+    #else
+      isLeftHand = has_usb();
+    #endif
+  #endif
+}
+
+static void keyboard_master_setup(void) {
+#ifdef USE_I2C
+    i2c_master_init();
+#ifdef SSD1306OLED
+    matrix_master_OLED_init ();
+#endif
+#else
+    serial_master_init();
+#endif
+}
+
+static void keyboard_slave_setup(void) {
+  timer_init();
+#ifdef USE_I2C
+    i2c_slave_init(SLAVE_I2C_ADDRESS);
+#else
+    serial_slave_init();
+#endif
+}
+
+bool has_usb(void) {
+   USBCON |= (1 << OTGPADE); //enables VBUS pad
+   _delay_us(5);
+   return (USBSTA & (1<<VBUS));  //checks state of VBUS
+}
+
+void split_keyboard_setup(void) {
+   setup_handedness();
+
+   if (has_usb()) {
+      keyboard_master_setup();
+   } else {
+      keyboard_slave_setup();
+   }
+   sei();
+}
+
+void keyboard_slave_loop(void) {
+   matrix_init();
+
+   while (1) {
+      matrix_slave_scan();
+   }
+}
+
+// this code runs before the usb and keyboard is initialized
+void matrix_setup(void) {
+    split_keyboard_setup();
+
+    if (!has_usb()) {
+        keyboard_slave_loop();
+    }
+}
diff --git a/keyboards/handwired/dactyl_manuform/split_util.h b/keyboards/handwired/dactyl_manuform/split_util.h
new file mode 100644
index 0000000000..595a0659e1
--- /dev/null
+++ b/keyboards/handwired/dactyl_manuform/split_util.h
@@ -0,0 +1,20 @@
+#ifndef SPLIT_KEYBOARD_UTIL_H
+#define SPLIT_KEYBOARD_UTIL_H
+
+#include <stdbool.h>
+#include "eeconfig.h"
+
+#define SLAVE_I2C_ADDRESS           0x32
+
+extern volatile bool isLeftHand;
+
+// slave version of matix scan, defined in matrix.c
+void matrix_slave_scan(void);
+
+void split_keyboard_setup(void);
+bool has_usb(void);
+void keyboard_slave_loop(void);
+
+void matrix_master_OLED_init (void);
+
+#endif