~ruther/qmk_firmware

79b1f129085425c72b72bee28ed065bf243c0a0b — tmk 12 years ago 0368936 + 6215727
Merge branch 'pc98' of github.com:tmk/tmk_keyboard into overlays
A converter/pc98_usb/Makefile => converter/pc98_usb/Makefile +83 -0
@@ 0,0 1,83 @@
# Target file name (without extension).
TARGET = pc98_usb

# Directory common source filess exist
TOP_DIR = ../..

# Directory keyboard dependent files exist
TARGET_DIR = .

# keyboard dependent files
SRC =	keymap.c \
	matrix.c \
	led.c \
	command_extra.c \
	protocol/serial_soft.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


#
# 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
OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT


# Build Options
#   *Comment out* to disable the options.
#
MOUSEKEY_ENABLE = yes	# Mouse keys
EXTRAKEY_ENABLE = yes	# Audio control and System control
CONSOLE_ENABLE = yes	# Console for debug
#NKRO_ENABLE = yes	# USB Nkey Rollover


# Boot Section Size in bytes
#   Teensy halfKay   512
#   Atmel DFU loader 4096
#   LUFA bootloader  4096
OPT_DEFS += -DBOOT_SIZE=4096


# Search Path
VPATH += $(TARGET_DIR)
VPATH += $(TOP_DIR)


include $(TOP_DIR)/protocol/lufa.mk
include $(TOP_DIR)/protocol.mk
include $(TOP_DIR)/common.mk
include $(TOP_DIR)/rules.mk

A converter/pc98_usb/README => converter/pc98_usb/README +65 -0
@@ 0,0 1,65 @@
PC98 to USB keyboard protocol converter
=======================================
Target MCU is ATMega32u4 but other USB capable AVR will also work.


Connector
---------

    8Pin mini DIN
       ___ ___
      /  |_|  \
     / 8  7  6 \
    | 5    4  3 |
     \_ 2   1 _/
       \_____/  
     (receptacle)


Wiring: You can change this with ediging config.h.

    Pin mini DIN        MCU
    ----------------------------------
    1  ~RST             PD1
    2   GND             GND
    3  ~RDY             PD4
    4   RXD             PD2
    5  ~RTY             PD5
    6   NC                 
    7   NC                 
    8   5V              VCC




Protocol
--------
Singnal: Asynchronous, Positive logic, 19200baud, Least bit first
Frame format: 1-Start bit(Lo), 8-Data bits, Odd-Parity, 1-Stop bit

This converter uses software method for testing purpose. AVR UART engine will work better.




Build Firmware
--------------
Just use 'make'

    $ cd pc98_usb
    $ make

Then, load the binary to MCU with your favorite programmer.



Other PC98 converter projects and resource
------------------------------------------
PC98 to USB
http://davy.nyacom.net/kbd98usb/

PC98 to PS/2
http://www.tsp.ne.jp/~sawada/mago/c_gka98at.htm

PC98 keyboard commands
http://www.webtech.co.jp/company/doc/undocumented_mem/io_kb.txt

A converter/pc98_usb/command_extra.c => converter/pc98_usb/command_extra.c +43 -0
@@ 0,0 1,43 @@
#include "stdbool.h"
#include "stdint.h"
#include "keycode.h"
#include "serial.h"
#include "print.h"
#include "command.h"

bool command_extra(uint8_t code)
{
    switch (code) {
        case KC_H:
        case KC_SLASH: /* ? */
            print("\n\n----- Sun converter Help -----\n");
            print("UP:	Bell On\n");
            print("DOWN:	Bell Off\n");
            print("LEFT:	Click On\n");
            print("RIGHT:	Click Off\n");
            return false;
        case KC_UP:
            print("Bell On\n");
            serial_send(0x02);
            break;
        case KC_DOWN:
            print("Bell Off\n");
            serial_send(0x03);
            break;
        case KC_LEFT:
            print("Click On\n");
            serial_send(0x0A);
            break;
        case KC_RIGHT:
            print("Click Off\n");
            serial_send(0x0B);
            break;
        case KC_NUMLOCK:
            print("layout\n");
            serial_send(0x0F);
            break;
        default:
            return false;
    }
    return true;
}

A converter/pc98_usb/config.h => converter/pc98_usb/config.h +100 -0
@@ 0,0 1,100 @@
/*
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/>.
*/

#ifndef CONFIG_H
#define CONFIG_H

#define VENDOR_ID       0xFEED
#define PRODUCT_ID      0x9898
#define DEVICE_VER      0x0100
#define MANUFACTURER    t.m.k.
#define PRODUCT         PC98 keyboard converter
#define DESCRIPTION     converts PC98 keyboard protocol into USB


/* matrix size */
#define MATRIX_ROWS 16
#define MATRIX_COLS 8


/* key combination for command */
#define IS_COMMAND() ( \
    keyboard_report->mods == (MOD_BIT(KC_LALT) | MOD_BIT(KC_RALT)) || \
    keyboard_report->mods == (MOD_BIT(KC_LGUI) | MOD_BIT(KC_RGUI)) || \
    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
)


/* PC98 Serial(USART) configuration
 *     asynchronous, positive logic, 19200baud, bit order: LSB first
 *     1-start bit, 8-data bit, odd parity, 1-stop bit
 */
#define SERIAL_BAUD 19200
#define SERIAL_PARITY_ODD
#define SERIAL_BIT_ORDER_LSB

/* PC98 Reset Port */
#define PC98_RST_DDR    DDRD
#define PC98_RST_PORT   PORTD
#define PC98_RST_BIT    1
/* PC98 Ready Port */
#define PC98_RDY_DDR    DDRD
#define PC98_RDY_PORT   PORTD
#define PC98_RDY_BIT    4
/* PC98 Retry Port */
#define PC98_RTY_DDR    DDRD
#define PC98_RTY_PORT   PORTD
#define PC98_RTY_BIT    5

/* RXD Port */
#define SERIAL_RXD_DDR  DDRD
#define SERIAL_RXD_PORT PORTD
#define SERIAL_RXD_PIN  PIND
#define SERIAL_RXD_BIT  2
#define SERIAL_RXD_READ()       (SERIAL_RXD_PIN&(1<<SERIAL_RXD_BIT))
/* RXD Interupt */
#define SERIAL_RXD_VECT INT2_vect
#define SERIAL_RXD_INIT()  do { \
    /* pin configuration: input with pull-up */ \
    SERIAL_RXD_DDR &= ~(1<<SERIAL_RXD_BIT);     \
    SERIAL_RXD_PORT |= (1<<SERIAL_RXD_BIT);     \
    /* enable interrupt: INT2(falling edge) */  \
    EICRA |= ((1<<ISC21)|(0<<ISC20));           \
    EIMSK |= (1<<INT2);                         \
} while (0)
#define SERIAL_RXD_INT_ENTER()
#define SERIAL_RXD_INT_EXIT() do {  \
    /* clear interrupt  flag */     \
    EIFR = (1<<INTF2);              \
} while (0)

/* TXD Port: Not used */
#define SERIAL_TXD_DDR  DDRD
#define SERIAL_TXD_PORT PORTD
#define SERIAL_TXD_PIN  PIND
#define SERIAL_TXD_BIT  3
/* negative logic */
#define SERIAL_TXD_ON()     do { SERIAL_TXD_PORT &= ~(1<<SERIAL_TXD_BIT); } while (0)
#define SERIAL_TXD_OFF()    do { SERIAL_TXD_PORT |=  (1<<SERIAL_TXD_BIT); } while (0)
#define SERIAL_TXD_INIT()   do { \
    /* pin configuration: output */         \
    SERIAL_TXD_DDR |= (1<<SERIAL_TXD_BIT);  \
    /* idle */                              \
    SERIAL_TXD_ON();                        \
} while (0)

#endif

A converter/pc98_usb/keymap.c => converter/pc98_usb/keymap.c +187 -0
@@ 0,0 1,187 @@
/*
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/>.
*/

#include <stdint.h>
#include <stdbool.h>
#include <avr/pgmspace.h>
#include "keycode.h"
#include "util.h"
#include "keymap.h"




/* PC-9801-98-S02   Raku Raku keyboard(Luckyboard) Normal Mode
  ,---------------------------------------------------------------.
  | 60| 61| 62| 63| 64| 65| 66| 67| 68| 69| 6A| 6B| 36| 37| 3F| 3E|
  `---------------------------------------------------------------'
  ,---------------------------------------------------------------.
  |    00| 01| 02| 03| 04| 05|  58|  71| 06| 07| 08| 09| 0A|    0E|
  |---------------------------------------------------------------|
  |   0F| 10| 11| 12| 13| 14|    3A     | 15| 16| 17| 18| 19|   1C|
  |---------------------------------------------------------------|
  |  74| 20| 21| 22| 23| 24|  3B  |  3C  | 25| 26| 27| 28| 29|    |
  |---------------------------------------------------------------|
  | 70| 2A| 2B| 2C| 2D| 2E| 38|  3D   | 39| 2F| 30| 31| 32| 33| 70|
  `---------------------------------------------------------------'
          | 73|   51|   5B|   59|       34|   5A|   35| xx|
          `-----------------------------------------------'
  xx: 74 35 F4 B5
*/
#define KEYMAP( \
    K60, K61, K62, K63, K64, K65, K66, K67, K68, K69, K6A, K6B, K36, K37, K3F, K3E, \
      K00,  K01, K02, K03, K04, K05,  K58, K71,   K06, K07, K08, K09, K0A,    K0E,  \
      K0F,  K10, K11, K12, K13, K14,     K3A,     K15, K16, K17, K18, K19,    K1C,  \
      K74, K20, K21, K22, K23, K24,   K3B,  K3C,   K25, K26, K27, K28, K29,         \
      K70,K2A, K2B, K2C, K2D, K2E, K38,  K3D,  K39, K2F, K30, K31, K32, K33,        \
               K73,  K51, K5B, K59,        K34,        K5A,  K35                    \
) { \
    { KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \
    { KC_##K08, KC_##K09, KC_##K0A, KC_NO,    KC_NO,    KC_NO,    KC_##K0E, KC_##K0F }, \
    { KC_##K10, KC_##K11, KC_##K12, KC_##K13, KC_##K14, KC_##K15, KC_##K16, KC_##K17 }, \
    { KC_##K18, KC_##K19, KC_NO,    KC_NO,    KC_##K1C, KC_NO,    KC_NO,    KC_NO    }, \
    { KC_##K20, KC_##K21, KC_##K22, KC_##K23, KC_##K24, KC_##K25, KC_##K26, KC_##K27 }, \
    { KC_##K28, KC_##K29, KC_##K2A, KC_##K2B, KC_##K2C, KC_##K2D, KC_##K2E, KC_##K2F }, \
    { KC_##K30, KC_##K31, KC_##K32, KC_##K33, KC_##K34, KC_##K35, KC_##K36, KC_##K37 }, \
    { KC_##K38, KC_##K39, KC_##K3A, KC_##K3B, KC_##K3C, KC_##K3D, KC_##K3E, KC_##K3F }, \
    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
    { KC_NO,    KC_##K51, KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
    { KC_NO,    KC_NO,    KC_##K5A, KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
    { KC_##K60, KC_##K61, KC_##K62, KC_##K63, KC_##K64, KC_##K65, KC_##K66, KC_##K67 }, \
    { KC_##K68, KC_##K69, KC_##K6A, KC_##K6B, KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
    { KC_##K70, KC_NO,    KC_NO,    KC_##K73, KC_##K74, KC_NO,    KC_NO,    KC_NO    }, \
    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }  \
}




// Assign Fn key(0-7) to a layer to which switch with the Fn key pressed.
static const uint8_t PROGMEM fn_layer[] = {
    2,              // Fn0
    3,              // Fn1
    4,              // 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[] = {
    KC_NO,          // Fn0
    KC_SCLN,        // Fn1
    KC_SLSH,        // Fn2
    KC_NO,          // Fn3
    KC_NO,          // Fn4
    KC_NO,          // Fn5
    KC_NO,          // Fn6
    KC_NO           // Fn7
};


static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    /*
  ,---------------------------------------------------------------.
  | 60| 61| 62| 63| 64| 65| 66| 67| 68| 69| 6A| 6B| 36| 37| 3F| 3E|
  `---------------------------------------------------------------'
  ,---------------------------------------------------------------.
  |    00| 01| 02| 03| 04| 05|  58|  71| 06| 07| 08| 09| 0A|    0E|
  |---------------------------------------------------------------|
  |   0F| 10| 11| 12| 13| 14|    3A     | 15| 16| 17| 18| 19|   1C|
  |---------------------------------------------------------------|
  |  74| 20| 21| 22| 23| 24|  MINS|   EQL| 25| 26| 27| 28| 29|    |
  |---------------------------------------------------------------|
  | 70| 2A| 2B| 2C| 2D| 2E| 38|  3D   | 39| 2F| 30| 31| 32| 33| 70|
  `---------------------------------------------------------------'
          | 73|   51|   5B|   59|       34|   5A|   35| xx|
          `-----------------------------------------------'
    */
    KEYMAP(
    PAUS,COPY,  F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9, F10, F11, F12, F13, F14,
      ESC,    1,   2,   3,   4,   5,    NO, NO,     6,   7,   8,   9,   0,   BSPC,
      TAB,    Q,   W,   E,   R,   T,      UP,       Y,   U,   I,   O,   P,   ENT,
      LCTL,  A,   S,   D,   F,   G,  MINS,  EQL,     H,   J,   K,   L,SCLN,
      LSFT, Z,   X,   C,   V,   B, INS, DOWN,  DEL,   N,   M,COMM, DOT,SLSH,
              LGUI, LALT, LCTL, LSFT,      SPC,      SPC,   RALT
    ),
};


uint8_t keymap_get_keycode(uint8_t layer, uint8_t row, uint8_t col)
{
    return pgm_read_byte(&keymaps[(layer)][(row)][(col)]);
}

uint8_t keymap_fn_layer(uint8_t index)
{
    return pgm_read_byte(&fn_layer[index]);
}

uint8_t keymap_fn_keycode(uint8_t index)
{
    return pgm_read_byte(&fn_keycode[index]);
}


#if 0
/* PC-9801-98-S02   Raku Raku keyboard(Luckyboard) M-siki mode
  ,---------------------------------------------------------------.
  | 60| 61| 62| 63| 64| 65| 66| 67| 68| 69| 6A| 6B| 36| 37| 3F| 3E|
  `---------------------------------------------------------------'
  ,---------------------------------------------------------------.
  |    00| 01| 02| 03| 04| 05| NUM|CAPS| 06| 07| 08| 09| 0A|    0E|
  |---------------------------------------------------------------|
  |   0F| 10| 25| 20| 23| 2B|    3A     | 2F| 15| 13| 11| 19|   1C|
  |---------------------------------------------------------------|
  |  74| 12| 16| 17| 1D| 18|  3B  |  3C  | 24| 1E| 14| 2E| 22|    |
  |---------------------------------------------------------------|
  | 70| xx| 2A| 2C| xx| xx| 38|  3D   | 39| 21| 29| 1F| xx| 2D| 70|
  `---------------------------------------------------------------'
          | 73|   51|   xx|   xx|       34|   xx|   35| xx|
          `-----------------------------------------------'
*/

#define KEYMAP_M( \
    K60, K61, K62, K63, K64, K65, K66, K67, K68, K69, K6A, K6B, K36, K37, K3F, K3E, \
      K00,  K01, K02, K03, K04, K05,              K06, K07, K08, K09, K0A,    K0E,  \
      K0F,  K10, K25, K23, K20, K2B,     K3A,     K2F, K15, K13, K11, K19,    K1C,  \
      K74, K12, K16, K17, K1D, K18,   K3B,  K3C,   K24, K1E, K14, K2E, K22,         \
      K70,     K2A, K2C,           K38,  K3D,  K39, K21, K29, K1F,      K2D,        \
               K73,  K51,                  K34,              K35                    \
) { \
    { KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \
    { KC_##K08, KC_##K09, KC_##K0A, KC_NO,    KC_NO,    KC_NO,    KC_##K0E, KC_##K0F }, \
    { KC_##K10, KC_##K11, KC_##K12, KC_##K13, KC_##K14, KC_##K15, KC_##K16, KC_##K17 }, \
    { KC_##K18, KC_##K19, KC_NO,    KC_NO,    KC_##K1C, KC_##K1D, KC_##K1E, KC_##K1F }, \
    { KC_##K20, KC_##K21, KC_##K22, KC_##K23, KC_##K24, KC_##K25, KC_NO,    KC_NO    }, \
    { KC_NO,    KC_##K29, KC_##K2A, KC_##K2B, KC_##K2C, KC_##K2D, KC_##K2E, KC_##K2F }, \
    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_##K34, KC_##K35, KC_##K36, KC_##K37 }, \
    { KC_##K38, KC_##K39, KC_##K3A, KC_##K3B, KC_##K3C, KC_##K3D, KC_##K3E, KC_##K3F }, \
    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
    { KC_NO,    KC_##K51, KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
    { KC_##K60, KC_##K61, KC_##K62, KC_##K63, KC_##K64, KC_##K65, KC_##K66, KC_##K67 }, \
    { KC_##K68, KC_##K69, KC_##K6A, KC_##K6B, KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
    { KC_##K70, KC_NO,    KC_NO,    KC_##K73, KC_##K74, KC_NO,    KC_NO,    KC_NO    }, \
    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }  \
}
#endif

A converter/pc98_usb/led.c => converter/pc98_usb/led.c +33 -0
@@ 0,0 1,33 @@
/*
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/>.
*/

#include "stdint.h"
#include "serial.h"
#include "led.h"


void led_set(uint8_t usb_led)
{
    uint8_t sun_led = 0;
    if (usb_led & (1<<USB_LED_NUM_LOCK))    sun_led |= (1<<0);
    if (usb_led & (1<<USB_LED_COMPOSE))     sun_led |= (1<<1);
    if (usb_led & (1<<USB_LED_SCROLL_LOCK)) sun_led |= (1<<2);
    if (usb_led & (1<<USB_LED_CAPS_LOCK))   sun_led |= (1<<3);

    serial_send(0x0E);
    serial_send(sun_led);
}

A converter/pc98_usb/matrix.c => converter/pc98_usb/matrix.c +168 -0
@@ 0,0 1,168 @@
/*
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/>.
*/

#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <util/delay.h>
#include "print.h"
#include "util.h"
#include "matrix.h"
#include "debug.h"
#include "protocol/serial.h"


/*
 * Matrix Array usage:
 *
 * ROW: 16(4bits)
 * COL:  8(3bits)
 *
 *    8bit wide
 *   +---------+
 *  0|00 ... 07|
 *  1|08 ... 0F|
 *  :|   ...   |
 *  :|   ...   |
 *  E|70 ... 77|
 *  F|78 ... 7F|
 *   +---------+
 */
static uint8_t matrix[MATRIX_ROWS];
#define ROW(code)      ((code>>3)&0xF)
#define COL(code)      (code&0x07)

static bool is_modified = false;


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 = true;

    PC98_RST_DDR |= (1<<PC98_RST_BIT);
    PC98_RDY_DDR |= (1<<PC98_RDY_BIT);
    PC98_RTY_DDR |= (1<<PC98_RTY_BIT);
    PC98_RST_PORT |= (1<<PC98_RST_BIT);
    PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
    PC98_RTY_PORT |= (1<<PC98_RTY_BIT);

    DDRD |= 1<<7;


    serial_init();

    // PC98 reset
    PC98_RST_PORT &= ~(1<<PC98_RST_BIT);
    _delay_us(15);
    PC98_RST_PORT |= (1<<PC98_RST_BIT);
    _delay_us(13);
    PC98_RDY_PORT |= (1<<PC98_RDY_BIT);

    // PC98 ready
    PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);

    // initialize matrix state: all keys off
    for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;

    debug("init\n");
    return;
}

uint8_t matrix_scan(void)
{
    is_modified = false;

    uint16_t code;
    PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
    _delay_us(30);
    code = serial_recv2();
    PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
    if (code == -1) return 0;

    debug_hex(code); debug(" ");

    if (code&0x80) {
        // break code
        if (matrix_is_on(ROW(code), COL(code))) {
            matrix[ROW(code)] &= ~(1<<COL(code));
            is_modified = true;
        }
    } else {
        // make code
        if (!matrix_is_on(ROW(code), COL(code))) {
            matrix[ROW(code)] |=  (1<<COL(code));
            is_modified = true;
        }
    }
    return code;
}

bool matrix_is_modified(void)
{
    return is_modified;
}

inline
bool matrix_has_ghost(void)
{
    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;
}

M protocol/serial.h => protocol/serial.h +1 -0
@@ 41,6 41,7 @@ POSSIBILITY OF SUCH DAMAGE.
/* host role */
void serial_init(void);
uint8_t serial_recv(void);
int16_t serial_recv2(void);
void serial_send(uint8_t data);

#endif

M protocol/serial_soft.c => protocol/serial_soft.c +52 -0
@@ 48,8 48,20 @@ POSSIBILITY OF SUCH DAMAGE.

#define WAIT_US     (1000000/SERIAL_BAUD)

/* debug for signal timing, see debug pin with oscilloscope */
#ifdef SERIAL_SOFT_DEBUG
    #define SERIAL_SOFT_DEBUG_INIT()    (DDRD |= 1<<7)
    #define SERIAL_SOFT_DEBUG_TGL()     (PORTD ^= 1<<7)
#else
    #define SERIAL_SOFT_DEBUG_INIT()
    #define SERIAL_SOFT_DEBUG_TGL()
#endif


void serial_init(void)
{
    SERIAL_SOFT_DEBUG_INIT();

    SERIAL_RXD_INIT();
    SERIAL_TXD_INIT();
}


@@ 60,6 72,7 @@ static uint8_t rbuf[RBUF_SIZE];
static uint8_t rbuf_head = 0;
static uint8_t rbuf_tail = 0;


uint8_t serial_recv(void)
{
    uint8_t data = 0;


@@ 72,6 85,18 @@ uint8_t serial_recv(void)
    return data;
}

int16_t serial_recv2(void)
{
    uint8_t data = 0;
    if (rbuf_head == rbuf_tail) {
        return -1;
    }

    data = rbuf[rbuf_tail];
    rbuf_tail = (rbuf_tail + 1) % RBUF_SIZE;
    return data;
}

void serial_send(uint8_t data)
{
    /* signal state: IDLE: ON, START: OFF, STOP: ON, DATA0: OFF, DATA1: ON */


@@ 103,22 128,36 @@ void serial_send(uint8_t data)
/* detect edge of start bit */
ISR(SERIAL_RXD_VECT)
{
    SERIAL_SOFT_DEBUG_TGL()
    SERIAL_RXD_INT_ENTER()

    uint8_t data = 0;

#ifdef SERIAL_BIT_ORDER_MSB
    uint8_t mask = 0x80;
#else
    uint8_t mask = 0x01;
#endif

#ifdef SERIAL_PARITY_ODD
    uint8_t parity = 0;
#elif defined(SERIAL_PARITY_EVEN)
    uint8_t parity = 1;
#endif

    /* to center of start bit */
    _delay_us(WAIT_US/2);
    SERIAL_SOFT_DEBUG_TGL()
    do {
        /* to center of next bit */
        _delay_us(WAIT_US);

    SERIAL_SOFT_DEBUG_TGL()
        if (SERIAL_RXD_READ()) {
            data |= mask;
#if defined(SERIAL_PARITY_EVEN) || defined(SERIAL_PARITY_ODD)
            parity ^= 1;
#endif
        }
#ifdef SERIAL_BIT_ORDER_MSB
        mask >>= 1;


@@ 126,14 165,27 @@ ISR(SERIAL_RXD_VECT)
        mask <<= 1;
#endif
    } while (mask);

#if defined(SERIAL_PARITY_EVEN) || defined(SERIAL_PARITY_ODD)
    /* to center of parity bit */
    _delay_us(WAIT_US);
    if (SERIAL_RXD_READ()) { parity ^= 1; }
    SERIAL_SOFT_DEBUG_TGL()
#endif

    /* to center of stop bit */
    _delay_us(WAIT_US);

    uint8_t next = (rbuf_head + 1) % RBUF_SIZE;
#if defined(SERIAL_PARITY_EVEN) || defined(SERIAL_PARITY_ODD)
    if (parity && next != rbuf_tail) {
#else
    if (next != rbuf_tail) {
#endif
        rbuf[rbuf_head] = data;
        rbuf_head = next;
    }

    SERIAL_RXD_INT_EXIT();
    SERIAL_SOFT_DEBUG_TGL()
}