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-rw-r--r--keyboards/dc01/arrow/arrow.c43
-rw-r--r--keyboards/dc01/arrow/arrow.h41
-rw-r--r--keyboards/dc01/arrow/config.h151
-rw-r--r--keyboards/dc01/arrow/info.json0
-rw-r--r--keyboards/dc01/arrow/keymaps/default/keymap.c42
-rw-r--r--keyboards/dc01/arrow/keymaps/default/readme.md3
-rw-r--r--keyboards/dc01/arrow/matrix.c404
-rw-r--r--keyboards/dc01/arrow/readme.md15
-rw-r--r--keyboards/dc01/arrow/rules.mk74
9 files changed, 773 insertions, 0 deletions
diff --git a/keyboards/dc01/arrow/arrow.c b/keyboards/dc01/arrow/arrow.c
new file mode 100644
index 000000000..07988b809
--- /dev/null
+++ b/keyboards/dc01/arrow/arrow.c
@@ -0,0 +1,43 @@
+/* Copyright 2018 Yiancar
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "arrow.h"
+
+void matrix_init_kb(void) {
+ // put your keyboard start-up code here
+ // runs once when the firmware starts up
+
+ matrix_init_user();
+}
+
+void matrix_scan_kb(void) {
+ // put your looping keyboard code here
+ // runs every cycle (a lot)
+
+ matrix_scan_user();
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+ // put your per-action keyboard code here
+ // runs for every action, just before processing by the firmware
+
+ return process_record_user(keycode, record);
+}
+
+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);
+}
diff --git a/keyboards/dc01/arrow/arrow.h b/keyboards/dc01/arrow/arrow.h
new file mode 100644
index 000000000..b7fec9ee8
--- /dev/null
+++ b/keyboards/dc01/arrow/arrow.h
@@ -0,0 +1,41 @@
+/* Copyright 2018 Yiancar
+ *
+ * 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 ARROW_H
+#define ARROW_H
+
+#include "quantum.h"
+
+#define XXX KC_NO
+
+// This a shortcut to help you visually see your layout.
+// The first section contains all of the arguments
+// The second converts the arguments into a two-dimensional array
+#define LAYOUT_ALL( \
+ K00, K01, K02, \
+ K10, K11, K12, \
+ \
+ K31, \
+ K40, K41, K42 \
+) \
+{ \
+ { K00, K01, K02 }, \
+ { K10, K11, K12 }, \
+ { XXX, XXX, XXX }, \
+ { XXX, K31, XXX }, \
+ { K40, K41, K42 } \
+}
+
+#endif
diff --git a/keyboards/dc01/arrow/config.h b/keyboards/dc01/arrow/config.h
new file mode 100644
index 000000000..75c674f63
--- /dev/null
+++ b/keyboards/dc01/arrow/config.h
@@ -0,0 +1,151 @@
+/*
+Copyright 2018 Yiancar
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0xFEED
+#define PRODUCT_ID 0x1012
+#define DEVICE_VER 0x0001
+#define MANUFACTURER Mechboards
+#define PRODUCT DC01 Arrow
+#define DESCRIPTION Arrow cluster of DC01 keyboard
+
+/* key matrix size */
+#define MATRIX_ROWS 5
+#define MATRIX_COLS 3
+
+/*
+ * Keyboard Matrix Assignments
+ *
+ * Change this to how you wired your keyboard
+ * COLS: AVR pins used for columns, left to right
+ * ROWS: AVR pins used for rows, top to bottom
+ * DIODE_DIRECTION: COL2ROW = COL = Anode (+), ROW = Cathode (-, marked on diode)
+ * ROW2COL = ROW = Anode (+), COL = Cathode (-, marked on diode)
+ *
+*/
+#define MATRIX_ROW_PINS { B0, C7, C6, B6, B4 }
+#define MATRIX_COL_PINS { F0, B7, D2 }
+#define UNUSED_PINS
+
+/* COL2ROW, ROW2COL, or CUSTOM_MATRIX */
+#define DIODE_DIRECTION COL2ROW
+
+// #define BACKLIGHT_PIN B7
+// #define BACKLIGHT_BREATHING
+// #define BACKLIGHT_LEVELS 3
+
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCING_DELAY 5
+
+/* define if matrix has ghost (lacks anti-ghosting diodes) */
+//#define MATRIX_HAS_GHOST
+
+/* number of backlight levels */
+
+/* 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
+
+/* If defined, GRAVE_ESC will always act as ESC when CTRL is held.
+ * This is userful for the Windows task manager shortcut (ctrl+shift+esc).
+ */
+// #define GRAVE_ESC_CTRL_OVERRIDE
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ *
+ */
+//#define FORCE_NKRO
+
+/*
+ * Magic Key Options
+ *
+ * Magic keys are hotkey commands that allow control over firmware functions of
+ * the keyboard. They are best used in combination with the HID Listen program,
+ * found here: https://www.pjrc.com/teensy/hid_listen.html
+ *
+ * The options below allow the magic key functionality to be changed. This is
+ * useful if your keyboard/keypad is missing keys and you want magic key support.
+ *
+ */
+
+/* key combination for magic key command */
+#define IS_COMMAND() ( \
+ keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/*
+ * 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
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+ - MIDI notes can be sent when in Music mode is on
+*/
+//#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+ - MIDI notes can be added to the keymap
+ - Octave shift and transpose
+ - Virtual sustain, portamento, and modulation wheel
+ - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 1 \ No newline at end of file
diff --git a/keyboards/dc01/arrow/info.json b/keyboards/dc01/arrow/info.json
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/keyboards/dc01/arrow/info.json
diff --git a/keyboards/dc01/arrow/keymaps/default/keymap.c b/keyboards/dc01/arrow/keymaps/default/keymap.c
new file mode 100644
index 000000000..591deb01c
--- /dev/null
+++ b/keyboards/dc01/arrow/keymaps/default/keymap.c
@@ -0,0 +1,42 @@
+/* Copyright 2018 REPLACE_WITH_YOUR_NAME
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+[0] = LAYOUT_ALL( /* Base */
+ KC_INS, KC_HOME, KC_PGUP, \
+ KC_DEL, KC_END, KC_PGDN, \
+ \
+ KC_UP, \
+ KC_LEFT, KC_DOWN, KC_RIGHT \
+),
+};
+
+void matrix_init_user(void) {
+
+}
+
+void matrix_scan_user(void) {
+
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+ return true;
+}
+
+void led_set_user(uint8_t usb_led) {
+
+}
diff --git a/keyboards/dc01/arrow/keymaps/default/readme.md b/keyboards/dc01/arrow/keymaps/default/readme.md
new file mode 100644
index 000000000..bc2431bc1
--- /dev/null
+++ b/keyboards/dc01/arrow/keymaps/default/readme.md
@@ -0,0 +1,3 @@
+# The default ANSI keymap for DC01 Arrow cluster
+
+When using the arrow module individually, this keymap will take effect. When using the keyboard as a whole please edit the keymap of the left module. \ No newline at end of file
diff --git a/keyboards/dc01/arrow/matrix.c b/keyboards/dc01/arrow/matrix.c
new file mode 100644
index 000000000..68abb6791
--- /dev/null
+++ b/keyboards/dc01/arrow/matrix.c
@@ -0,0 +1,404 @@
+/*
+Copyright 2012 Jun Wako
+Copyright 2014 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/>.
+*/
+#include <stdint.h>
+#include <stdbool.h>
+#if defined(__AVR__)
+#include <avr/io.h>
+#include <avr/wdt.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#endif
+#include "wait.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "matrix.h"
+#include "timer.h"
+#include "i2c_slave.h"
+#include "lufa.h"
+
+#define SLAVE_I2C_ADDRESS 0x23
+
+/* Set 0 if debouncing isn't needed */
+
+#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)
+#elif (MATRIX_COLS <= 16)
+# define print_matrix_header() print("\nr/c 0123456789ABCDEF\n")
+# define print_matrix_row(row) print_bin_reverse16(matrix_get_row(row))
+# define matrix_bitpop(i) bitpop16(matrix[i])
+# define ROW_SHIFTER ((uint16_t)1)
+#elif (MATRIX_COLS <= 32)
+# define print_matrix_header() print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
+# define print_matrix_row(row) print_bin_reverse32(matrix_get_row(row))
+# define matrix_bitpop(i) bitpop32(matrix[i])
+# define ROW_SHIFTER ((uint32_t)1)
+#endif
+
+#ifdef MATRIX_MASKED
+ extern const matrix_row_t matrix_mask[];
+#endif
+
+#if (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
+static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+#endif
+
+/* 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_quantum(void) {
+ matrix_init_kb();
+}
+
+__attribute__ ((weak))
+void matrix_scan_quantum(void) {
+ matrix_scan_kb();
+}
+
+__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) {
+
+ // initialize row and col
+#if (DIODE_DIRECTION == COL2ROW)
+ unselect_rows();
+ init_cols();
+#elif (DIODE_DIRECTION == ROW2COL)
+ unselect_cols();
+ init_rows();
+#endif
+
+ // 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)
+{
+#if (DIODE_DIRECTION == COL2ROW)
+
+ // Set row, read cols
+ for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
+# if (DEBOUNCING_DELAY > 0)
+ bool matrix_changed = read_cols_on_row(matrix_debouncing, current_row);
+
+ if (matrix_changed) {
+ debouncing = true;
+ debouncing_time = timer_read();
+ }
+
+# else
+ read_cols_on_row(matrix, 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, current_col);
+ if (matrix_changed) {
+ debouncing = true;
+ debouncing_time = timer_read();
+ }
+# else
+ read_rows_on_col(matrix, current_col);
+# endif
+
+ }
+
+#endif
+
+# if (DEBOUNCING_DELAY > 0)
+ if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ matrix[i] = matrix_debouncing[i];
+ }
+ debouncing = false;
+ }
+# endif
+
+ if (USB_DeviceState != DEVICE_STATE_Configured){
+ txbuffer[1] = 0x55;
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++){
+ txbuffer[i+2] = matrix[i]; //send matrix over i2c
+ }
+ }
+
+ matrix_scan_quantum();
+ return 1;
+}
+
+bool matrix_is_modified(void)
+{
+#if (DEBOUNCING_DELAY > 0)
+ if (debouncing) return false;
+#endif
+ 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)
+{
+ // Matrix mask lets you disable switches in the returned matrix data. For example, if you have a
+ // switch blocker installed and the switch is always pressed.
+#ifdef MATRIX_MASKED
+ return matrix[row] & matrix_mask[row];
+#else
+ return matrix[row];
+#endif
+}
+
+void matrix_print(void)
+{
+ print_matrix_header();
+
+ for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+ phex(row); print(": ");
+ print_matrix_row(row);
+ print("\n");
+ }
+}
+
+uint8_t matrix_key_count(void)
+{
+ uint8_t count = 0;
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ count += matrix_bitpop(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 < MATRIX_ROWS; 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 < MATRIX_ROWS; 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 < MATRIX_ROWS; 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
+
+//this replases tmk code
+void matrix_setup(void){
+
+ if (USB_DeviceState != DEVICE_STATE_Configured){
+ i2c_init(SLAVE_I2C_ADDRESS); //setup address of slave i2c
+ sei(); //enable interupts
+ }
+} \ No newline at end of file
diff --git a/keyboards/dc01/arrow/readme.md b/keyboards/dc01/arrow/readme.md
new file mode 100644
index 000000000..3c0ece7a3
--- /dev/null
+++ b/keyboards/dc01/arrow/readme.md
@@ -0,0 +1,15 @@
+# DC01 Arrow Cluster
+
+![DC01 Arrow Cluster](https://i.imgur.com/PTn0sp8.jpg)
+
+A hotpluggable four part keyboard which comes together with magnets and pogo pins! This is the arrow cluster
+
+Keyboard Maintainer: [Yiancar](https://github.com/yiancar)
+Hardware Supported: Runs on an atmega32u4
+Hardware Availability: [Mechboards](https://mechboards.co.uk/)
+
+Make example for this keyboard (after setting up your build environment):
+
+ make dc01/arrow:default
+
+See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.
diff --git a/keyboards/dc01/arrow/rules.mk b/keyboards/dc01/arrow/rules.mk
new file mode 100644
index 000000000..c45789353
--- /dev/null
+++ b/keyboards/dc01/arrow/rules.mk
@@ -0,0 +1,74 @@
+SRC += matrix.c \
+ ../../../drivers/avr/i2c_slave.c
+
+# MCU name
+#MCU = at90usb1286
+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
+# change yes to no to disable
+#
+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 = no # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes # USB Nkey Rollover
+BACKLIGHT_ENABLE = no # Enable keyboard backlight functionality on B7 by default
+MIDI_ENABLE = no # MIDI support (+2400 to 4200, depending on config)
+UNICODE_ENABLE = no # Unicode
+BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE = no # Audio output on port C6
+FAUXCLICKY_ENABLE = no # Use buzzer to emulate clicky switches
+HD44780_ENABLE = no # Enable support for HD44780 based LCDs (+400)
+NO_USB_STARTUP_CHECK = yes # Disable initialization only when usb is plugged in
+CUSTOM_MATRIX = yes # Use custom matrix \ No newline at end of file