Added protocol support for Macintosh keyboard M0110.

m0110.c

@@ -0,0 +1,304 @@
+/*
+Copyright 2011 Jun WAKO <wakojun@gmail.com>
+
+This software is licensed with a Modified BSD License.
+All of this is supposed to be Free Software, Open Source, DFSG-free,
+GPL-compatible, and OK to use in both free and proprietary applications.
+Additions and corrections to this file are welcome.
+
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in
+  the documentation and/or other materials provided with the
+  distribution.
+
+* Neither the name of the copyright holders nor the names of
+  contributors may be used to endorse or promote products derived
+  from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stdbool.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include "m0110.h"
+#include "debug.h"
+
+
+static inline void clock_lo(void);
+static inline void clock_hi(void);
+static inline bool clock_in(void);
+static inline void data_lo(void);
+static inline void data_hi(void);
+static inline bool data_in(void);
+static inline uint16_t wait_clock_lo(uint16_t us);
+static inline uint16_t wait_clock_hi(uint16_t us);
+static inline uint16_t wait_data_lo(uint16_t us);
+static inline uint16_t wait_data_hi(uint16_t us);
+static inline void idle(void);
+static inline void request(void);
+
+
+/*
+Primitive M0110 Library for AVR
+==============================
+
+
+Signaling
+---------
+CLOCK is always from KEYBOARD. DATA are sent with MSB first.
+
+1) IDLE: both line is high.
+    CLOCK ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    DATA  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+2) KEYBOARD->HOST: HOST reads bit on rising edge.
+    CLOCK ~~~~~~~~~~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~~~~~~~~~
+    DATA  ~~~~~~~~~~~~X777777X666666X555555X444444X333333X222222X111111X000000X~~~~~~~
+                      <--> 160us(clock low)
+                         <---> 180us(clock high)
+
+3) HOST->KEYBOARD: HOST asserts bit on falling edge.
+    CLOCK ~~~~~~~~~~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~~~~~~~~~
+    DATA  ~~~~~~|_____X777777X666666X555555X444444X333333X222222X111111X000000X~~~~~~~
+                <----> 840us(request to send by host)                     <-> 80us(hold DATA)
+                      <--> 180us(clock low)
+                         <---> 220us(clock high)
+
+
+Protocol
+--------
+COMMAND:
+    Inquiry     0x10    get key event
+    Instant     0x12    get key event
+    Model       0x14    get model number(M0110 responds with 0x09)
+                        bit 7   1 if another device connected(used when keypad exists?)
+                        bit4-6  next device model number
+                        bit1-3  keyboard model number
+                        bit 0   always 1
+    Test        0x16    test(ACK:0x7D/NAK:0x77)
+
+KEY EVENT:
+    bit 7       key state(0:press 1:release)
+    bit 6-1     scan code
+    bit 0       always 1
+    To get scan code,  use ((bits&(1<<7)) | ((bits&7F))>>1).
+
+SCAN CODE:
+    M0110A
+    ,---------------------------------------------------------.
+    |  `|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Backs|
+    |---------------------------------------------------------|
+    |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|  \|
+    |---------------------------------------------------------|
+    |CapsLo|  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return|
+    |---------------------------------------------------------|
+    |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  ,|  /|        |
+    `---------------------------------------------------------'
+         |Opt|Mac |         Space               |Enter|Opt|
+         `------------------------------------------------'
+    ,---------------------------------------------------------.
+    | 32| 12| 13| 14| 15| 17| 16| 1A| 1C| 19| 1D| 1B| 18|   33|
+    |---------------------------------------------------------|
+    |   30| 0C| 0D| 0E| 0F| 10| 11| 20| 22| 1F| 23| 21| 1E| 2A|
+    |---------------------------------------------------------|
+    |    39| 00| 01| 02| 03| 05| 04| 26| 28| 25| 29| 27|    24|
+    |---------------------------------------------------------|
+    |      38| 06| 07| 08| 09| 0B| 2D| 2E| 2B| 2F| 2C|      38|
+    `---------------------------------------------------------'
+         | 3A|  37|             31              |   34| 3A|
+         `------------------------------------------------'
+
+
+References
+----------
+Protocol:
+    http://www.mac.linux-m68k.org/devel/plushw.php
+Connector:
+    http://www.kbdbabel.org/conn/kbd_connector_macplus.png
+Signaling:
+    http://www.kbdbabel.org/signaling/kbd_signaling_mac.png
+    http://typematic.blog.shinobi.jp/Entry/14/
+Scan Codes:
+    http://m0115.web.fc2.com/m0110.jpg
+    http://m0115.web.fc2.com/m0110a.jpg
+*/
+
+
+#define WAIT(stat, us, err) do { \
+    if (!wait_##stat(us)) { \
+        m0110_error = err; \
+        goto ERROR; \
+    } \
+} while (0)
+
+
+uint8_t m0110_error = 0;
+
+
+void m0110_init(void)
+{
+    uint8_t data;
+    idle();
+    _delay_ms(255);
+
+    m0110_send(M0110_MODLE);
+    data = m0110_recv();
+    print("m0110_init model: "); phex(data); print("\n");
+
+    m0110_send(M0110_TEST);
+    data = m0110_recv();
+    print("m0110_init test: "); phex(data); print("\n");
+}
+
+uint8_t m0110_send(uint8_t data)
+{
+    m0110_error = 0;
+
+    request();
+    WAIT(clock_lo, 1000, 0);
+    for (uint8_t bit = 0x80; bit; bit >>= 1) {
+        WAIT(clock_lo, 250, 3);
+        _delay_us(15);
+        if (data&bit) {
+            data_hi();
+        } else {
+            data_lo();
+        }
+        WAIT(clock_hi, 200, 4);
+    }
+    _delay_us(100); // hold last bit for 80us
+    idle();
+    return 1;
+ERROR:
+    if (m0110_error) {
+        print("m0110_send err: "); phex(m0110_error); print("\n");
+    }
+    idle();
+    return 0;
+}
+
+uint8_t m0110_recv(void)
+{
+    uint8_t data = 0;
+    m0110_error = 0;
+
+    WAIT(clock_lo, -1, 0); // need 250ms? insted 0xffff(16bit max)us
+    for (uint8_t i = 0; i < 8; i++) {
+        data <<= 1;
+        WAIT(clock_lo, 200, 2);
+        WAIT(clock_hi, 200, 3);
+        if (data_in()) {
+            data |= 1;
+        }
+    }
+    idle();
+    print("m0110_send recv data: "); phex(data); print("\n");
+    return data;
+ERROR:
+    if (m0110_error) {
+        print("m0110_recv err: "); phex(m0110_error); print("\n");
+    }
+    idle();
+    return 0xFF;
+}
+
+uint8_t m0110_recv_key(void)
+{
+    uint8_t key;
+    m0110_send(M0110_INQUIRY);
+    key = m0110_recv();
+    if (key == 0xFF || key == M0110_NULL)
+        return M0110_NULL;
+    else 
+        return (key&(1<<7) | (key&0x7F)>>1);
+}
+
+
+static inline void clock_lo()
+{
+    M0110_CLOCK_PORT &= ~(1<<M0110_CLOCK_BIT);
+    M0110_CLOCK_DDR  |=  (1<<M0110_CLOCK_BIT);
+}
+static inline void clock_hi()
+{
+    /* input with pull up */
+    M0110_CLOCK_DDR  &= ~(1<<M0110_CLOCK_BIT);
+    M0110_CLOCK_PORT |=  (1<<M0110_CLOCK_BIT);
+}
+static inline bool clock_in()
+{
+    M0110_CLOCK_DDR  &= ~(1<<M0110_CLOCK_BIT);
+    M0110_CLOCK_PORT |=  (1<<M0110_CLOCK_BIT);
+    _delay_us(1);
+    return M0110_CLOCK_PIN&(1<<M0110_CLOCK_BIT);
+}
+static inline void data_lo()
+{
+    M0110_DATA_PORT &= ~(1<<M0110_DATA_BIT);
+    M0110_DATA_DDR  |=  (1<<M0110_DATA_BIT);
+}
+static inline void data_hi()
+{
+    /* input with pull up */
+    M0110_DATA_DDR  &= ~(1<<M0110_DATA_BIT);
+    M0110_DATA_PORT |=  (1<<M0110_DATA_BIT);
+}
+static inline bool data_in()
+{
+    M0110_DATA_DDR  &= ~(1<<M0110_DATA_BIT);
+    M0110_DATA_PORT |=  (1<<M0110_DATA_BIT);
+    _delay_us(1);
+    return M0110_DATA_PIN&(1<<M0110_DATA_BIT);
+}
+
+static inline uint16_t wait_clock_lo(uint16_t us)
+{
+    while (clock_in()  && us) { asm(""); _delay_us(1); us--; }
+    return us;
+}
+static inline uint16_t wait_clock_hi(uint16_t us)
+{
+    while (!clock_in() && us) { asm(""); _delay_us(1); us--; }
+    return us;
+}
+static inline uint16_t wait_data_lo(uint16_t us)
+{
+    while (data_in() && us)  { asm(""); _delay_us(1); us--; }
+    return us;
+}
+static inline uint16_t wait_data_hi(uint16_t us)
+{
+    while (!data_in() && us)  { asm(""); _delay_us(1); us--; }
+    return us;
+}
+
+static inline void idle(void)
+{
+    clock_hi();
+    data_hi();
+}
+
+static inline void request(void)
+{
+    clock_hi();
+    data_lo();
+}

m0110.h

@@ -0,0 +1,73 @@
+/*
+Copyright 2011 Jun WAKO <wakojun@gmail.com>
+
+This software is licensed with a Modified BSD License.
+All of this is supposed to be Free Software, Open Source, DFSG-free,
+GPL-compatible, and OK to use in both free and proprietary applications.
+Additions and corrections to this file are welcome.
+
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in
+  the documentation and/or other materials provided with the
+  distribution.
+
+* Neither the name of the copyright holders nor the names of
+  contributors may be used to endorse or promote products derived
+  from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef M0110_H
+#define M0110_H
+
+
+/* port settings for clock and data line */
+#if !(defined(M0110_CLOCK_PORT) && \
+      defined(M0110_CLOCK_PIN) && \
+      defined(M0110_CLOCK_DDR) && \
+      defined(M0110_CLOCK_BIT))
+#   error "M0110 clock port setting is required in config.h"
+#endif
+
+#if !(defined(M0110_DATA_PORT) && \
+      defined(M0110_DATA_PIN) && \
+      defined(M0110_DATA_DDR) && \
+      defined(M0110_DATA_BIT))
+#   error "M0110 data port setting is required in config.h"
+#endif
+
+#define M0110_INQUIRY     0x10
+#define M0110_INSTNAT     0x14
+#define M0110_MODLE       0x16
+#define M0110_TEST        0x36
+
+#define M0110_NULL        0x7B
+
+
+extern uint8_t m0110_error;
+
+/* host role */
+void m0110_host_init(void);
+uint8_t m0110_send(uint8_t data);
+uint8_t m0110_recv(void);
+uint8_t m0110_recv_key(void);
+
+#endif

m0110_usb/Makefile

@@ -0,0 +1,52 @@
+# Target file name (without extension).
+TARGET = m0110
+
+# Directory common source filess exist
+COMMON_DIR = ..
+
+# Directory keyboard dependent files exist
+TARGET_DIR = .
+
+# keyboard dependent files
+SRC =	main.c \
+	keymap.c \
+	matrix.c \
+	led.c \
+	m0110.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 $(COMMON_DIR)/pjrc.mk
+include $(COMMON_DIR)/common.mk

m0110_usb/README

@@ -0,0 +1,55 @@
+M0110 to USB keyboard converter
+===============================
+This firmware converts protocol for Apple Machintosh Keybard M0110.
+
+
+Connection
+----------
+You need 4P4C plug and cable to connect Teensy into M0110.
+Teensy port F0 is assigned for CLOCK line and F1 for DATA by default, you can change pin configuration with editing config.h..
+
+Plug:
+    http://en.wikipedia.org/wiki/Modular_connector#4P4C
+
+Pinout:
+    http://www.kbdbabel.org/conn/kbd_connector_macplus.png
+    1(Black):   GND
+    2(Red):     CLOCK
+    3(Green):   DATA
+    4(Yellow):  +5V
+
+
+
+Build Frimware
+--------------
+Optionally edit Makefile and config.h for build options, pin configuration or MCU.
+
+$ cd m0110_usb
+$ make
+and program your Teensy with loader.
+
+
+
+Keymap
+------
+You can change a keymap by editing code of keymap.c like following.
+How to define the keymap is probably obvious. You can find  key symbols in usb_keycodes.h.
+
+This is a default keymap for M0110.
+,---------------------------------------------------------.
+|  `|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Bacpa|
+|---------------------------------------------------------|
+|Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|  \|
+|---------------------------------------------------------|
+|CapsLo|  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return|
+|---------------------------------------------------------|
+|Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  ,|  /|Shift   |
+`---------------------------------------------------------'
+     |Opt|Alt |         Space               |Alt |Opt|
+     `-----------------------------------------------'
+
+
+Notes
+-----
+
+EOF

m0110_usb/config.h

@@ -0,0 +1,62 @@
+/*
+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      0x0110
+#define MANUFACTURER    t.m.k.
+#define PRODUCT         M0110 keyboard converter
+#define DESCRIPTION     convert M0110 keyboard to USB
+
+
+/* matrix size */
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 8
+
+/* 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
+
+
+/* ports */
+#define M0110_CLOCK_PORT        PORTF
+#define M0110_CLOCK_PIN         PINF
+#define M0110_CLOCK_DDR         DDRF
+#define M0110_CLOCK_BIT         0
+#define M0110_DATA_PORT         PORTF
+#define M0110_DATA_PIN          PINF
+#define M0110_DATA_DDR          DDRF
+#define M0110_DATA_BIT          1
+
+#endif

m0110_usb/keymap.c

@@ -0,0 +1,118 @@
+/*
+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.
+// TODO: layout for M0110A
+/* M0110 */
+#define KEYMAP( \
+    K32,K12,K13,K14,K15,K17,K16,K1A,K1C,K19,K1D,K1B,K18,K33, \
+    K30,K0C,K0D,K0E,K0F,K11,K10,K20,K22,K1F,K23,K21,K1E,K2A, \
+    K39,K00,K01,K02,K03,K05,K04,K26,K28,K25,K29,K27,    K24, \
+    K38,K06,K07,K08,K09,K0B,K2D,K2E,K2B,K2F,K2C,             \
+        K3A,K37,        K31,                K34              \
+) { \
+    { 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_##K34, KB_NO,    KB_NO,    KB_##K37 }, \
+    { KB_##K38, KB_##K39, KB_##K3A, KB_NO,    KB_NO,    KB_NO,    KB_NO,    KB_NO    }  \
+}
+
+
+// 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
+     * ,---------------------------------------------------------.
+     * |  `|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Bacpa|
+     * |---------------------------------------------------------|
+     * |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|  \|
+     * |---------------------------------------------------------|
+     * |CapsLo|  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return|
+     * |---------------------------------------------------------|
+     * |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  ,|  /|Shift   |
+     * `---------------------------------------------------------'
+     *      |Opt|Alt |         Space               |Alt |Opt|
+     *      `-----------------------------------------------'
+     */
+    KEYMAP(
+    GRV, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSPC,
+    TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,BSLS,
+    CAPS,A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,     ENT,
+    LSFT,Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,
+         LGUI,LALT,          SPC,                     RALT
+    ),
+};
+
+
+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))]);
+}

m0110_usb/led.c

@@ -0,0 +1,24 @@
+/*
+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 "led.h"
+
+
+void led_set(uint8_t usb_led)
+{
+}

m0110_usb/matrix.c

@@ -0,0 +1,193 @@
+/*
+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 "m0110.h"
+#include "matrix.h"
+
+
+#define CAPS        0x39
+#define CAPS_UP     (CAPS | 0x80)
+#define ROW(key)    ((key)>>3&0x0F)
+#define COL(key)    ((key)&0x07)
+
+
+static bool is_modified = false;
+
+// matrix state buffer(1:on, 0:off)
+static uint8_t *matrix;
+static uint8_t _matrix0[MATRIX_ROWS];
+
+#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)
+{
+    print_enable = true;
+    debug_enable = true;
+    debug_matrix = false;
+    debug_keyboard = false;
+    debug_mouse = false;
+    print("debug enabled.\n");
+
+    m0110_init();
+    // initialize matrix state: all keys off
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
+    matrix = _matrix0;
+    return;
+}
+
+uint8_t matrix_scan(void)
+{
+    uint8_t key;
+
+    is_modified = false;
+    key = m0110_recv_key();
+
+#ifdef MATRIX_HAS_LOCKING_CAPS
+    // Send Caps key up event
+    if (matrix_is_on(ROW(CAPS), COL(CAPS))) {
+        is_modified = true;
+        register_key(CAPS_UP);
+    }
+#endif
+    if (key == M0110_NULL) {
+        return 0;
+    } else {
+#ifdef MATRIX_HAS_LOCKING_CAPS    
+        if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) {
+            // CAPS LOCK on:
+            // Ignore LockingCaps key down event
+            if (key == CAPS) return 0;
+            // Convert LockingCaps key up event into down event
+            if (key == CAPS_UP) key = CAPS;
+        } else {
+            // CAPS LOCK off:
+            // Ignore LockingCaps key up event
+            if (key == CAPS_UP) return 0;
+        }
+#endif        
+        is_modified = true;
+        register_key(key);
+    }
+
+    if (debug_enable) {
+        print("key: "); phex(key); print("\n");
+    }
+    return 1;
+}
+
+bool matrix_is_modified(void)
+{
+    return 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
+uint8_t matrix_get_row(uint8_t row)
+{
+    return matrix[row];
+}
+
+void matrix_print(void)
+{
+    print("\nr/c 01234567\n");
+    for (uint8_t row = 0; row < matrix_rows(); row++) {
+        phex(row); print(": ");
+        pbin_reverse(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 += bitpop(matrix[i]);
+    }
+    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)
+{
+    if (key&0x80) {
+        matrix[ROW(key)] &= ~(1<<COL(key));
+    } else {
+        matrix[ROW(key)] |=  (1<<COL(key));
+    }
+}