Made directories for keyboard and converter projects.

6 files changed, 613 insertions, 0 deletions

diff --git a/converter/adb_usb/Makefile b/converter/adb_usb/Makefile
new file mode 100644
index 000000000..64a23d09d
--- /dev/null
+++ b/converter/adb_usb/Makefile
@@ -0,0 +1,54 @@
+# Target file name (without extension).
+TARGET = adb_usb
+
+# Directory common source filess exist
+TOP_DIR = ../..
+
+# Directory keyboard dependent files exist
+TARGET_DIR = .
+
+# keyboard dependent files
+SRC =	main.c \
+	keymap.c \
+	matrix.c \
+	led.c \
+	adb.c
+
+CONFIG_H = config.h
+
+
+# MCU name, you MUST set this to match the board you are using
+# type "make clean" after changing this, so all files will be rebuilt
+#MCU = at90usb162       # Teensy 1.0
+MCU = atmega32u4       # Teensy 2.0
+#MCU = at90usb646       # Teensy++ 1.0
+#MCU = at90usb1286      # Teensy++ 2.0
+
+
+# Processor frequency.
+#   Normally the first thing your program should do is set the clock prescaler,
+#   so your program will run at the correct speed.  You should also set this
+#   variable to same clock speed.  The _delay_ms() macro uses this, and many
+#   examples use this variable to calculate timings.  Do not add a "UL" here.
+F_CPU = 16000000
+
+
+# Build Options
+#   comment out to disable the options.
+#
+#MOUSEKEY_ENABLE = yes	# Mouse keys
+#PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
+EXTRAKEY_ENABLE = yes	# Audio control and System control
+#NKRO_ENABLE = yes	# USB Nkey Rollover
+
+
+
+#---------------- Programming Options --------------------------
+PROGRAM_CMD = teensy_loader_cli -mmcu=$(MCU) -w -v $(TARGET).hex
+
+
+
+include $(TOP_DIR)/protocol/pjrc.mk
+include $(TOP_DIR)/protocol.mk
+include $(TOP_DIR)/common.mk
+include $(TOP_DIR)/rules.mk
diff --git a/converter/adb_usb/README b/converter/adb_usb/README
new file mode 100644
index 000000000..5d0e1bc86
--- /dev/null
+++ b/converter/adb_usb/README
@@ -0,0 +1,70 @@
+ADB to USB keyboard converter
+=============================
+http://geekhack.org/showwiki.php?title=Island:14290
+
+This firmware converts ADB keyboard protocol to USB.
+
+
+Build
+-----
+0. Connect ADB keyboard to Teensy by 3 lines(Vcc, GND, Data).
+   You need a external pull-up resistor on DATA line in most case,
+   in particular when you want to use a long or coiled cable.
+   This converter uses AVR's internal pull-up, but it seems to be too weak.
+   The external pull-up resistor is strongly recommended.
+   PSW line is optional. See ADB.txt for details.
+1. Define following macros for ADB connection in config.h:
+   ADB_PORT
+   ADB_PIN
+   ADB_DDR
+   ADB_DATA_BIT
+   ADB_PSW_BIT
+2. make
+3. program Teensy.
+
+
+Keymap
+------
+You can change a keymap by editing code of keymap.c like following.
+This is a keymap for AEK, however, also used for other keyboards.
+How to define the keymap is probably obvious. You can find  key
+symbols in usb_keycodes.h.
+If you want to define some keymaps than just one, see hhkb/keymap.c and
+macway/keymap.c as examples. Keymap(layer) switching may needs a bit of
+effort at this time.
+
+    /* Default Layer: plain keymap
+     * ,---.   ,---------------. ,---------------. ,---------------. ,-----------.             ,---.
+     * |Esc|   |F1 |F2 |F3 |F4 | |F5 |F6 |F7 |F8 | |F9 |F10|F11|F12| |PrS|ScL|Pau|             |Pwr|
+     * `---'   `---------------' `---------------' `---------------' `-----------'             `---'
+     * ,-----------------------------------------------------------. ,-----------. ,---------------.
+     * |  `|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Backspa| |Ins|Hom|PgU| |NmL|  =|  /|  *|
+     * |-----------------------------------------------------------| |-----------| |---------------|
+     * |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|    \| |Del|End|PgD| |  7|  8|  9|  -|
+     * |-----------------------------------------------------------| `-----------' |---------------|
+     * |CapsLo|  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return  |               |  4|  5|  6|  +|
+     * |-----------------------------------------------------------|     ,---.     |---------------|
+     * |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  ,|  /|Shift     |     |Up |     |  1|  2|  3|   |
+     * |-----------------------------------------------------------| ,-----------. |-----------|Ent|
+     * |Ctrl |Gui |Alt |         Space           |     |    |      | |Lef|Dow|Rig| |      0|  .|   |
+     * `-----------------------------------------------------------' `-----------' `---------------'
+     */
+    KEYMAP(
+    ESC, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12,           PSCR,SLCK,BRK,                    PWR,
+    GRV, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSPC,     INS, HOME,PGUP,    NLCK,EQL, PSLS,PAST,
+    TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,BSLS,     DEL, END, PGDN,    P7,  P8,  P9,  PMNS,
+    CAPS,A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,     ENT,                         P4,  P5,  P6,  PPLS,
+    LSFT,Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,          RSFT,          UP,           P1,  P2,  P3,
+    LCTL,LGUI,LALT,          SPC,                                              LEFT,DOWN,RGHT,    P0,       PDOT,PENT
+    ),
+
+
+Notes
+-----
+Many ADB keyboards has no discrimination between right modifier and left one,
+you will always see left control even if you press right control key.
+Apple Extended Keyboard and Apple Extended Keyboard II are the examples.
+Though ADB protocol itsef has the ability of distinction between right and left.
+And most ADB keyboard has no NKRO functionality, though ADB protocol itsef has that. 
+
+EOF
diff --git a/converter/adb_usb/config.h b/converter/adb_usb/config.h
new file mode 100644
index 000000000..52d5925a5
--- /dev/null
+++ b/converter/adb_usb/config.h
@@ -0,0 +1,72 @@
+/*
+Copyright 2011 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+/* controller configuration */
+#include "controller_teensy.h"
+
+#define VENDOR_ID       0xFEED
+#define PRODUCT_ID      0x0ADB
+#define DEVICE_VER      0x0101
+#define MANUFACTURER    t.m.k.
+#define PRODUCT         ADB keyboard converter
+#define DESCRIPTION     convert ADB keyboard to USB
+
+/* matrix size */
+#define MATRIX_ROWS 16  // keycode bit: 3-0
+#define MATRIX_COLS 8   // keycode bit: 6-4
+
+/* Locking Caps Lock support */
+#define MATRIX_HAS_LOCKING_CAPS
+
+
+/* key combination for command */
+#define IS_COMMAND() ( \
+    keyboard_report->mods == (MOD_BIT(KB_LSHIFT) | MOD_BIT(KB_LCTRL) | MOD_BIT(KB_LALT) | MOD_BIT(KB_LGUI)) || \
+    keyboard_report->mods == (MOD_BIT(KB_LSHIFT) | MOD_BIT(KB_RSHIFT)) \
+)
+
+
+/* mouse keys */
+#ifdef MOUSEKEY_ENABLE
+#   define MOUSEKEY_DELAY_TIME 192
+#endif
+
+
+/* PS/2 mouse */
+#ifdef PS2_MOUSE_ENABLE
+#   define PS2_CLOCK_PORT  PORTF
+#   define PS2_CLOCK_PIN   PINF
+#   define PS2_CLOCK_DDR   DDRF
+#   define PS2_CLOCK_BIT   0
+#   define PS2_DATA_PORT   PORTF
+#   define PS2_DATA_PIN    PINF
+#   define PS2_DATA_DDR    DDRF
+#   define PS2_DATA_BIT    1
+#endif
+
+
+/* ADB port setting */
+#define ADB_PORT        PORTF
+#define ADB_PIN         PINF
+#define ADB_DDR         DDRF
+#define ADB_DATA_BIT    0
+//#define ADB_PSW_BIT     1       // optional
+
+#endif
diff --git a/converter/adb_usb/keymap.c b/converter/adb_usb/keymap.c
new file mode 100644
index 000000000..cdaa935d3
--- /dev/null
+++ b/converter/adb_usb/keymap.c
@@ -0,0 +1,150 @@
+/*
+Copyright 2011 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* 
+ * Keymap for ADB keyboard
+ */
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/pgmspace.h>
+#include "usb_keyboard.h"
+#include "usb_keycodes.h"
+#include "print.h"
+#include "debug.h"
+#include "util.h"
+#include "keymap.h"
+
+
+#define KEYCODE(layer, row, col) (pgm_read_byte(&keymaps[(layer)][(row)][(col)]))
+
+// Convert physical keyboard layout to matrix array.
+// This is a macro to define keymap easily in keyboard layout form.
+/* Apple Extended Keyboard */
+#define KEYMAP( \
+    K35,  K7A,K78,K63,K76, K60,K61,K62,K64, K65,K6D,K67,K6F, K69,K6B,K71,              K7F, \
+    K32,K12,K13,K14,K15,K17,K16,K1A,K1C,K19,K1D,K1B,K18,K33, K72,K73,K74,  K47,K51,K4B,K43, \
+    K30,K0C,K0D,K0E,K0F,K11,K10,K20,K22,K1F,K23,K21,K1E,K2A, K75,K77,K79,  K59,K5B,K5C,K4E, \
+    K39,K00,K01,K02,K03,K05,K04,K26,K28,K25,K29,K27,    K24,               K56,K57,K58,K45, \
+    K38,K06,K07,K08,K09,K0B,K2D,K2E,K2B,K2F,K2C,        K7B,     K3E,      K53,K54,K55,     \
+    K36,K3A,K37,        K31,                                 K3B,K3D,K3C,  K52,    K41,K4C  \
+) { \
+    { KB_##K00, KB_##K01, KB_##K02, KB_##K03, KB_##K04, KB_##K05, KB_##K06, KB_##K07 }, \
+    { KB_##K08, KB_##K09, KB_NO,    KB_##K0B, KB_##K0C, KB_##K0D, KB_##K0E, KB_##K0F }, \
+    { KB_##K10, KB_##K11, KB_##K12, KB_##K13, KB_##K14, KB_##K15, KB_##K16, KB_##K17 }, \
+    { KB_##K18, KB_##K19, KB_##K1A, KB_##K1B, KB_##K1C, KB_##K1D, KB_##K1E, KB_##K1F }, \
+    { KB_##K20, KB_##K21, KB_##K22, KB_##K23, KB_##K24, KB_##K25, KB_##K26, KB_##K27 }, \
+    { KB_##K28, KB_##K29, KB_##K2A, KB_##K2B, KB_##K2C, KB_##K2D, KB_##K2E, KB_##K2F }, \
+    { KB_##K30, KB_##K31, KB_##K32, KB_##K33, KB_NO,    KB_##K35, KB_##K36, KB_##K37 }, \
+    { KB_##K38, KB_##K39, KB_##K3A, KB_##K3B, KB_##K3C, KB_##K3D, KB_##K3E, KB_NO    }, \
+    { KB_NO,    KB_##K41, KB_NO,    KB_##K43, KB_NO,    KB_##K45, KB_NO,    KB_##K47 }, \
+    { KB_NO,    KB_NO,    KB_NO,    KB_##K4B, KB_##K4C, KB_NO,    KB_##K4E, KB_NO    }, \
+    { KB_NO,    KB_##K51, KB_##K52, KB_##K53, KB_##K54, KB_##K55, KB_##K56, KB_##K57 }, \
+    { KB_##K58, KB_##K59, KB_NO,    KB_##K5B, KB_##K5C, KB_NO,    KB_NO,    KB_NO    }, \
+    { KB_##K60, KB_##K61, KB_##K62, KB_##K63, KB_##K64, KB_##K65, KB_NO,    KB_##K67 }, \
+    { KB_NO,    KB_##K69, KB_NO,    KB_##K6B, KB_NO,    KB_##K6D, KB_NO,    KB_##K6F }, \
+    { KB_NO,    KB_##K71, KB_##K72, KB_##K73, KB_##K74, KB_##K75, KB_##K76, KB_##K77 }, \
+    { KB_##K78, KB_##K79, KB_##K7A, KB_##K7B, KB_NO,    KB_NO,    KB_NO,    KB_##K7F }  \
+}
+/* plain keymap
+    {
+        { KB_A,   KB_S,   KB_D,   KB_F,   KB_H,   KB_G,   KB_Z,   KB_X   }, // 00-07
+        { KB_C,   KB_V,   KB_NO,  KB_B,   KB_Q,   KB_W,   KB_E,   KB_R   }, // 08-0F
+        { KB_Y,   KB_T,   KB_1,   KB_2,   KB_3,   KB_4,   KB_6,   KB_5   }, // 10-17
+        { KB_EQL, KB_9,   KB_7,   KB_MINS,KB_8,   KB_0,   KB_RBRC,KB_O   }, // 18-1F
+        { KB_U,   KB_LBRC,KB_I,   KB_P,   KB_ENT, KB_L,   KB_J,   KB_QUOT}, // 20-27
+        { KB_K,   KB_SCLN,KB_BSLS,KB_COMM,KB_SLSH,KB_N,   KB_M,   KB_DOT }, // 28-2F
+        { KB_TAB, KB_SPC, KB_GRV, KB_BSPC,KB_NO,  KB_ESC, KB_LCTL,KB_LGUI}, // 30-37
+        { KB_LSFT,KB_CAPS,KB_LALT,KB_LEFT,KB_RGHT,KB_DOWN,KB_UP,  KB_NO  }, // 38-3F
+        { KB_NO,  KB_PDOT,KB_NO,  KB_PAST,KB_NO,  KB_PPLS,KB_NO,  KB_NLCK}, // 40-47
+        { KB_NO,  KB_NO,  KB_NO,  KB_PSLS,KB_PENT,KB_NO,  KB_PMNS,KB_NO  }, // 48-4F
+        { KB_NO,  KB_PEQL,KB_P0,  KB_P1,  KB_P2,  KB_P3,  KB_P4,  KB_P5  }, // 50-57
+        { KB_P6,  KB_P7,  KB_NO,  KB_P8,  KB_P9,  KB_NO,  KB_NO,  KB_NO  }, // 58-5F
+        { KB_F5,  KB_F6,  KB_F7,  KB_F3,  KB_F8,  KB_F9,  KB_NO,  KB_F11 }, // 60-67
+        { KB_NO,  KB_PSCR,KB_NO,  KB_SLCK,KB_NO,  KB_F10, KB_NO,  KB_F12 }, // 68-6F
+        { KB_NO,  KB_BRK, KB_INS, KB_HOME,KB_PGUP,KB_DEL, KB_F4,  KB_END }, // 70-77
+        { KB_F2,  KB_PGDN,KB_F1,  KB_RSFT,KB_NO,  KB_NO,  KB_NO,  KB_PWR }, // 78-7F
+    },
+*/
+
+
+// Assign Fn key(0-7) to a layer to which switch with the Fn key pressed.
+static const uint8_t PROGMEM fn_layer[] = {
+    0,              // Fn0
+    0,              // Fn1
+    0,              // Fn2
+    0,              // Fn3
+    0,              // Fn4
+    0,              // Fn5
+    0,              // Fn6
+    0               // Fn7
+};
+
+// Assign Fn key(0-7) to a keycode sent when release Fn key without use of the layer.
+// See layer.c for details.
+static const uint8_t PROGMEM fn_keycode[] = {
+    KB_NO,          // Fn0
+    KB_NO,          // Fn1
+    KB_NO,          // Fn2
+    KB_NO,          // Fn3
+    KB_NO,          // Fn4
+    KB_NO,          // Fn5
+    KB_NO,          // Fn6
+    KB_NO           // Fn7
+};
+
+static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* Default Layer: plain keymap
+     * ,---.   ,---------------. ,---------------. ,---------------. ,-----------.             ,---.
+     * |Esc|   |F1 |F2 |F3 |F4 | |F5 |F6 |F7 |F8 | |F9 |F10|F11|F12| |PrS|ScL|Pau|             |Pwr|
+     * `---'   `---------------' `---------------' `---------------' `-----------'             `---'
+     * ,-----------------------------------------------------------. ,-----------. ,---------------.
+     * |  `|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Backspa| |Ins|Hom|PgU| |NmL|  =|  /|  *|
+     * |-----------------------------------------------------------| |-----------| |---------------|
+     * |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|    \| |Del|End|PgD| |  7|  8|  9|  -|
+     * |-----------------------------------------------------------| `-----------' |---------------|
+     * |CapsLo|  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return  |               |  4|  5|  6|  +|
+     * |-----------------------------------------------------------|     ,---.     |---------------|
+     * |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  ,|  /|Shift     |     |Up |     |  1|  2|  3|   |
+     * |-----------------------------------------------------------| ,-----------. |-----------|Ent|
+     * |Ctrl |Gui |Alt |         Space           |     |    |      | |Lef|Dow|Rig| |      0|  .|   |
+     * `-----------------------------------------------------------' `-----------' `---------------'
+     */
+    KEYMAP(
+    ESC, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12,           PSCR,SLCK,BRK,                    PWR,
+    GRV, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSPC,     INS, HOME,PGUP,    NLCK,EQL, PSLS,PAST,
+    TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,BSLS,     DEL, END, PGDN,    P7,  P8,  P9,  PMNS,
+    CAPS,A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,     ENT,                         P4,  P5,  P6,  PPLS,
+    LSFT,Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,          RSFT,          UP,           P1,  P2,  P3,
+    LCTL,LGUI,LALT,          SPC,                                              LEFT,DOWN,RGHT,    P0,       PDOT,PENT
+    ),
+};
+
+
+uint8_t keymap_get_keycode(uint8_t layer, uint8_t row, uint8_t col)
+{
+    return KEYCODE(layer, row, col);
+}
+
+uint8_t keymap_fn_layer(uint8_t fn_bits)
+{
+    return pgm_read_byte(&fn_layer[biton(fn_bits)]);
+}
+
+uint8_t keymap_fn_keycode(uint8_t fn_bits)
+{
+    return pgm_read_byte(&fn_keycode[(biton(fn_bits))]);
+}
diff --git a/converter/adb_usb/led.c b/converter/adb_usb/led.c
new file mode 100644
index 000000000..0e162f379
--- /dev/null
+++ b/converter/adb_usb/led.c
@@ -0,0 +1,26 @@
+/*
+Copyright 2011 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "stdint.h"
+#include "adb.h"
+#include "led.h"
+
+
+void led_set(uint8_t usb_led)
+{
+    adb_host_kbd_led(~usb_led);
+}
diff --git a/converter/adb_usb/matrix.c b/converter/adb_usb/matrix.c
new file mode 100644
index 000000000..a2367af56
--- /dev/null
+++ b/converter/adb_usb/matrix.c
@@ -0,0 +1,241 @@
+/*
+Copyright 2011 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ * scan matrix
+ */
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <util/delay.h>
+#include "print.h"
+#include "util.h"
+#include "debug.h"
+#include "host.h"
+#include "led.h"
+#include "adb.h"
+#include "matrix.h"
+
+
+#if (MATRIX_COLS > 16)
+#   error "MATRIX_COLS must not exceed 16"
+#endif
+#if (MATRIX_ROWS > 255)
+#   error "MATRIX_ROWS must not exceed 255"
+#endif
+
+#define CAPS        0x39
+#define CAPS_UP     (CAPS | 0x80)
+#define ROW(key)    ((key)>>3&0x0F)
+#define COL(key)    ((key)&0x07)
+
+
+static bool _matrix_is_modified = false;
+
+// matrix state buffer(1:on, 0:off)
+#if (MATRIX_COLS <= 8)
+static uint8_t *matrix;
+static uint8_t _matrix0[MATRIX_ROWS];
+#else
+static uint16_t *matrix;
+static uint16_t _matrix0[MATRIX_ROWS];
+#endif
+
+#ifdef MATRIX_HAS_GHOST
+static bool matrix_has_ghost_in_row(uint8_t row);
+#endif
+static void _register_key(uint8_t key);
+
+
+inline
+uint8_t matrix_rows(void)
+{
+    return MATRIX_ROWS;
+}
+
+inline
+uint8_t matrix_cols(void)
+{
+    return MATRIX_COLS;
+}
+
+void matrix_init(void)
+{
+    adb_host_init();
+
+    // initialize matrix state: all keys off
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
+    matrix = _matrix0;
+
+    print_enable = true;
+    debug_enable = true;
+    debug_matrix = true;
+    debug_keyboard = true;
+    debug_mouse = true;
+    print("debug enabled.\n");
+    return;
+}
+
+uint8_t matrix_scan(void)
+{
+    uint16_t codes;
+    uint8_t key0, key1;
+
+    _matrix_is_modified = false;
+    codes = adb_host_kbd_recv();
+    key0 = codes>>8;
+    key1 = codes&0xFF;
+
+#ifdef MATRIX_HAS_LOCKING_CAPS
+    // Send Caps key up event
+    if (matrix_is_on(ROW(CAPS), COL(CAPS))) {
+        _matrix_is_modified = true;
+        _register_key(CAPS_UP);
+    }
+#endif
+    if (codes == 0) {                           // no keys
+        return 0;
+    } else if (key0 == 0xFF && key1 != 0xFF) {  // error
+        return codes&0xFF;
+    } else {
+#ifdef MATRIX_HAS_LOCKING_CAPS    
+        if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) {
+            // Ignore LockingCaps key down event when CAPS LOCK is on
+            if (key0 == CAPS && (key1 == CAPS || key1 == 0xFF)) return 0;
+            if (key0 == CAPS) key0 = key1;
+            if (key1 == CAPS) key1 = 0xFF;
+            // Convert LockingCaps key up event into down event
+            if (key0 == CAPS_UP) key0 = CAPS;
+            if (key1 == CAPS_UP) key1 = CAPS;
+        } else {
+            // CAPS LOCK off:
+            // Ignore LockingCaps key up event when CAPS LOCK is off
+            if (key0 == CAPS_UP && (key1 == CAPS_UP || key1 == 0xFF)) return 0;
+            if (key0 == CAPS_UP) key0 = key1;
+            if (key1 == CAPS_UP) key1 = 0xFF;
+        }
+#endif        
+        _matrix_is_modified = true;
+        _register_key(key0);
+        if (key1 != 0xFF)       // key1 is 0xFF when no second key.
+            _register_key(key1);
+    }
+
+    if (debug_enable) {
+        print("adb_host_kbd_recv: "); phex16(codes); print("\n");
+    }
+    return 1;
+}
+
+bool matrix_is_modified(void)
+{
+    return _matrix_is_modified;
+}
+
+inline
+bool matrix_has_ghost(void)
+{
+#ifdef MATRIX_HAS_GHOST
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+        if (matrix_has_ghost_in_row(i))
+            return true;
+    }
+#endif
+    return false;
+}
+
+inline
+bool matrix_is_on(uint8_t row, uint8_t col)
+{
+    return (matrix[row] & (1<<col));
+}
+
+inline
+#if (MATRIX_COLS <= 8)
+uint8_t matrix_get_row(uint8_t row)
+#else
+uint16_t matrix_get_row(uint8_t row)
+#endif
+{
+    return matrix[row];
+}
+
+void matrix_print(void)
+{
+#if (MATRIX_COLS <= 8)
+    print("\nr/c 01234567\n");
+#else
+    print("\nr/c 0123456789ABCDEF\n");
+#endif
+    for (uint8_t row = 0; row < matrix_rows(); row++) {
+        phex(row); print(": ");
+#if (MATRIX_COLS <= 8)
+        pbin_reverse(matrix_get_row(row));
+#else
+        pbin_reverse16(matrix_get_row(row));
+#endif
+#ifdef MATRIX_HAS_GHOST
+        if (matrix_has_ghost_in_row(row)) {
+            print(" <ghost");
+        }
+#endif
+        print("\n");
+    }
+}
+
+uint8_t matrix_key_count(void)
+{
+    uint8_t count = 0;
+    for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+#if (MATRIX_COLS <= 8)
+        count += bitpop(matrix[i]);
+#else
+        count += bitpop16(matrix[i]);
+#endif
+    }
+    return count;
+}
+
+#ifdef MATRIX_HAS_GHOST
+inline
+static bool matrix_has_ghost_in_row(uint8_t row)
+{
+    // no ghost exists in case less than 2 keys on
+    if (((matrix[row] - 1) & matrix[row]) == 0)
+        return false;
+
+    // ghost exists in case same state as other row
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+        if (i != row && (matrix[i] & matrix[row]) == matrix[row])
+            return true;
+    }
+    return false;
+}
+#endif
+
+inline
+static void _register_key(uint8_t key)
+{
+    uint8_t col, row;
+    col = key&0x07;
+    row = (key>>3)&0x0F;
+    if (key&0x80) {
+        matrix[row] &= ~(1<<col);
+    } else {
+        matrix[row] |=  (1<<col);
+    }
+}