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Add HHKB JP support 

- scan matrix about twice faster
yuk86
tmk 9 years ago
parent
34373185b7
commit
6013483050
7 changed files with 375 additions and 164 deletions
Split View Show Diff Stats
  1. 21
    7
      keyboard/hhkb/Makefile
  2. 5
    1
      keyboard/hhkb/config.h
  3. 118
    29
      keyboard/hhkb/doc/HHKB.txt
  4. 148
    0
      keyboard/hhkb/hhkb_avr.h
  5. 27
    0
      keyboard/hhkb/keymap_common.h
  6. 50
    0
      keyboard/hhkb/keymap_jp.c
  7. 6
    127
      keyboard/hhkb/matrix.c

+ 21
- 7
keyboard/hhkb/Makefile View File

@@ -53,12 +53,6 @@ SRC += keymap_common.c \
matrix.c \
led.c

ifdef KEYMAP
SRC := keymap_$(KEYMAP).c $(SRC)
else
SRC := keymap_hhkb.c $(SRC)
endif

CONFIG_H = config.h


@@ -123,7 +117,27 @@ EXTRAKEY_ENABLE = yes # Audio control and System control
CONSOLE_ENABLE = yes # Console for debug
COMMAND_ENABLE = yes # Commands for debug and configuration
NKRO_ENABLE = yes # USB Nkey Rollover
KEYMAP_SECTION_ENABLE = yes # fixed address keymap for keymap editor
#KEYMAP_SECTION_ENABLE = yes # fixed address keymap for keymap editor
#HHKB_JP = yes # HHKB JP support


ifdef HHKB_JP
OPT_DEFS += -DHHKB_JP
endif


#
# Keymap file
#
ifdef KEYMAP
SRC := keymap_$(KEYMAP).c $(SRC)
else
ifdef HHKB_JP
SRC := keymap_jp.c $(SRC)
else
SRC := keymap_hhkb.c $(SRC)
endif
endif


# Search Path

+ 5
- 1
keyboard/hhkb/config.h View File

@@ -28,7 +28,11 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.


/* matrix size */
#define MATRIX_ROWS 8
#ifdef HHKB_JP
# define MATRIX_ROWS 16
#else
# define MATRIX_ROWS 8
#endif
#define MATRIX_COLS 8



+ 118
- 29
keyboard/hhkb/doc/HHKB.txt View File

@@ -12,11 +12,11 @@ Controller PCB
Keyswitch PCB
-------------
HC4051 Analog Multiplexer: select a row line.
http://www.alldatasheet.com/datasheet-pdf/pdf/203989/KODENSHI/KK74HC4051A.html
http://www.ti.com/lit/ds/schs122j/schs122j.pdf
LS145 BCD Decoder: select a column line.
http://www.alldatasheet.com/datasheet-pdf/pdf/27373/TI/SN74LS145D.html
http://www.ti.com/lit/ds/symlink/sn74ls145.pdf
BU9831 Non-volatile electronic potentiometer: for calibration?
http://www.alldatasheet.com/datasheet-pdf/pdf/36387/ROHM/BU9831.html
https://www.spezial.com/doc/rohm-a/bu9831.pdf
TP1683/4 Capacitive Sensing controller: no datasheet available.

(HHKB_keyswitch.jpg)
@@ -28,37 +28,41 @@ Keyswitch PCB
Connector Cable
---------------
Two PCBs are connected by 15 lines(13 in case of Pro2).
Vcc and GND use 3(2) lines each, other 9 lines are for keyboard signaling.
Vcc and GND use 3(2) lines each, other lines are for keyboard signaling.

Keyswitch connector
pro pro2 Description Teensy++ pins
HHKB connector lines:
JP Pro2 Pro Function Description Teensy++ pins
--------------------------------------------------------------------------------------------
1 Vcc(5V) Not exist on Pro2 5V
2 1 Vcc(5V) 5V
3 2 Vcc(5V) 5V
4 3 TP1684 KEY: Low(0) when key pressed PE6 input(with pullup)
5 4 TP1684 KEY_PREV: make threshold PE7 output
6 5 HC4051 A(bit0)\ PB0 output
7 6 HC4051 B(bit1) > select row(0 to 7) PB1 output
8 7 HC4051 C(bit2)/ PB2 output
9 8 LS145 A(bit0)\ PB3 output
10 9 LS145 B(bit1) > select column(0 to 7) PB4 output
11 10 LS145 C(bit2)/ PB5 output
12 11 LS145 D(enable) Low(0) enables selected column PB6 output
13 12 GND GND
14 13 GND GND
15 GND Not exist on Pro2 GND
1 Vcc(5V) 5V
1 1 2 Vcc(5V) 5V
2 2 3 Vcc(5V) 5V
3 3 4 TP1684 KEY: Low(0) when key pressed PE6 input(with pullup)
4 4 5 TP1684 KEY_PREV: make threshold PE7 output
5 5 6 HC4051 A(bit0)\ PB0 output
6 6 7 HC4051 B(bit1) > select row 0-7 PB1 output
7 7 8 HC4051 C(bit2)/ PB2 output
8 8 9 LS145 A(bit0)\ PB3 output
9 9 10 LS145 B(bit1) > select column 0-7 PB4 output
10 10 11 LS145 C(bit2)/ PB5 output
11 11 12 LS145 D(enable) Low(0) enables selected column PB6 output
12 12 13 GND GND
13 13 14 GND GND
15 GND
14 HC4051(Z2) ~Enable of Z2 row0-7
15 HC4051(Z3) ~Enable of Z3 row8-15

NOTE: guessing pin5(KEY_PREV) may work for hysteresis of capacitive sensing.
NOTE: 1KOhm didn't work as pullup resistor on KEY. AVR internal pullup or 10KOhm resistor was OK.
NOTE: JP has two HC4051(Z2,Z3) and line 5, 6 and 7 are connected to both of them.

(HHKB_connector.jpg)


Keyswitch matrix
----------------
60 keyswitches in 8*8 matrix. It is ghost-free and bounce-free.
HHKB switch matrix is ghost-free and bounce-free.

Pro/Pro2(8x8):
COL 0 1 2 3 4 5 6 7
ROW ---------------------------------------------------------------
0| 2 q w s a z x c
@@ -71,8 +75,30 @@ Keyswitch matrix
7| - + ] [ ' / . _NONE_


JP(16x8):
COL 0 1 2 3 4 5 6 7
ROW ---------------------------------------------------------------
0| ESC TAB LFn LShift LCtrl
1| 4 E MuHKN C D
2| 3 W LAlt X S
3| 1 HHK
4|
5| 5 R V F
6| 2 Q LGui Z A
7| 6 T Space B G
8| 9 I Kana , K
9| 8 U Henkan M J
A| 7 Y N H
B| 0 O RAlt . L
C| BS Right RShift Enter
D| \ [ Down Up ]
E| - P RFn / ;
F| ~ @ Left Ro :


Matrix diagram:

Pro/Pro2:
+-------------------------+-+-+-+-+-+-+-+ Vcc
|bias control? - - - - - - - - ---
| 3.9K*8 R R R R R R R R |
@@ -89,13 +115,49 @@ Matrix diagram:
KEY PREV | A B C +-----------------+
| | +-^----+ | | | | LS145 |
Vcc | | |BU9831| | | | +-^--^--^--^------+
--- | | +------+ | | | A B C D +------+
| | | | | | | | | | | |
1-3 4 5 6 7 8 9 10 11 12 13-15 |
+--------------------------------------------------+ |
| connector | ---
+--------------------------------------------------+ GND
to controller
--- | | +------+ | | | A B C D +-------+
| | | | | | | | | | | |
1-3 4 5 6 7 8 9 10 11 12 13-15 Pro |
1-2 3 4 5 6 7 8 9 10 11 12-13 Pro2|
+--------------------------------------------------+ |
| connector | ---
+--------------------------------------------------+ GND


JP:
+-----------------------------+-+-+-+-+ Vcc
|bias control? - - - - - ---
| 3.9K*5 R R R R R |
+--------^+ +--------+ - - - - - |
| | | HC4051 <0-----------|-|-|-|-|----|R|-+
| |capa. | Z2 <1-----------|-|-|-|-|----|R|-+
| TP1684 |sense | <2-----------|-|-|-|-|----|R|-+
| <---+--| <3-----------|-|-|-|-|----|R|-+
| | | | <4-----------|-|-|-|-|----|R|-+
| | ~En| <5-----------|-|-|-|-|----|R|-+
| | +----> <6-----------|-|-|-|-|----|R|-+
| | | | | A B C <7-----------|-|-|-|-|----|R|-+
+---V---^-+ | | +-^-^-^--+ | | | | | |
KEY PREV | | | | | | | | | | |
| | | | +--------+ | | | | | |
| | | | | HC4051 <8-----------|-|-|-|-|----|R|-+
| | | | | Z3 <9-----------|-|-|-|-|----|R|-+
| | | +--| <A-----------|-|-|-|-|----|R|-+
| | | | <B-----------|-|-|-|-|----|R|-+
| | | | <C-----------|-|-|-|-|----|R|-+
| | | ~En| <D-----------|-|-|-|-|----|R|-+
| | | +-> <E-----------|-|-|-|-|----|R|-+
| | | | | A B C <F-----------|-|-|-|-|----|R|-+
| | | | +-^-^-^--+ 0 1 2 3 4 5 6 7 33K*8
| | | | | | | +-----------------+
| | | | | | | | LS145 |
Vcc | | | | | | | +-^--^--^--^------+
--- | | | | | | | A B C D +-------+
| | | | | | | | | | | | | |
1-2 3 4 14 15 5 6 7 8 9 10 11 12-13 |
+--------------------------------------------------+ |
| connector | ---
+--------------------------------------------------+ GND

Signals charts
@@ -114,6 +176,33 @@ Signals charts

(HHKB_chart2.jpg)

5us after setting colA-C
colA _~~~~~~~~~~~~~~~~~~
prev _~~~~_____ 20us if previous key state is low
colD ~~~__~~~~~ 10us column enabled
key ~~~____~~~ 22us hold state of the key

prev ____~~~~__________ 20us(JP)/17us(Pro2)
key ~~~~~~_____~~~~~~~ 22us
colD ~~~~~~__~~~~~~~~~~ 10us(LS175)

colC ____~~~~____~~~~ 550/410us(JP)
colB __~~__~~__~~__~~ 200/210us(JP)
colA _~_~_~_~_~_~_~_~ 100/110us(JP) 200/210us(Pro2)
0123456701234567 selected column

rowC ____~~~~____~~~~ 3.8/3.8ms(JP) S2 of HC4051
rowB __~~__~~__~~__~~ 1.9/1.9ms(JP) S1 of HC4051
rowA _~_~_~_~_~_~_~_~ 1.0/1.0ms(JP) S0 of HC4051
0123456701234567 selected row(Pro/Pro2)
0123456789ABCDEF selected row(JP)
rowEn0 ________~~~~~~~~ 7.7/7.7ms ~Enable of Z2 HC4051(JP only)
rowEn1 ~~~~~~~~________ 7.7/7.7ms ~Enable of Z3 HC4051(JP only)

NOTE: JP scans twice fast as Pro2 does. So Pro2 scan 8x8 matrix in 15.4ms while JP can 16x8 in that time.




Matrix scan pseudo code
-----------------------

+ 148
- 0
keyboard/hhkb/hhkb_avr.h View File

@@ -0,0 +1,148 @@
#ifndef HHKB_AVR_H
#define HHKB_AVR_H

#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>


// Timer resolution check
#if (1000000/TIMER_RAW_FREQ > 20)
# error "Timer resolution(>20us) is not enough for HHKB matrix scan tweak on V-USB."
#endif


/*
* HHKB Matrix I/O
*
* row: HC4051[A,B,C] selects scan row0-7
* row-ext: [En0,En1] row extention for JP
* col: LS145[A,B,C,D] selects scan col0-7 and enable(D)
* key: on: 0/off: 1
* prev: hysteresis control: assert(1) when previous key state is on
*/


#if defined(__AVR_ATmega32U4__)
/*
* For TMK HHKB alt controller(ATMega32U4)
*
* row: PB0-2
* col: PB3-5,6
* key: PD7(pull-uped)
* prev: PB7
* power: PD4(L:off/H:on)
* row-ext: PC6,7 for HHKB JP(active low)
*/
static inline void KEY_ENABLE(void) { (PORTB &= ~(1<<6)); }
static inline void KEY_UNABLE(void) { (PORTB |= (1<<6)); }
static inline bool KEY_STATE(void) { return (PIND & (1<<7)); }
static inline void KEY_PREV_ON(void) { (PORTB |= (1<<7)); }
static inline void KEY_PREV_OFF(void) { (PORTB &= ~(1<<7)); }
static inline void KEY_POWER_ON(void) {}
static inline void KEY_POWER_OFF(void) {}
static inline void KEY_INIT(void)
{
DDRB = 0xFF;
PORTB = 0x00;
DDRD &= ~0x80;
PORTD |= 0x80;
/* keyswitch board power on */
DDRD |= (1<<4);
PORTD |= (1<<4);
#ifdef HHKB_JP
/* row extention for HHKB JP */
DDRC |= (1<<6|1<<7);
PORTC |= (1<<6|1<<7);
#endif
KEY_UNABLE();
KEY_PREV_OFF();
}
static inline void KEY_SELECT(uint8_t ROW, uint8_t COL)
{
PORTB = (PORTB & 0xC0) | (((COL) & 0x07)<<3) | ((ROW) & 0x07);
#ifdef HHKB_JP
if ((ROW) & 0x08) PORTC = (PORTC & ~(1<<6|1<<7)) | (1<<6);
else PORTC = (PORTC & ~(1<<6|1<<7)) | (1<<7);
#endif
}


#elif defined(__AVR_AT90USB1286__)
/*
* For Teensy++(AT90USB1286)
*
* row: PB0-2
* col: PB3-5,6
* key: PE6(pull-uped)
* prev: PE7
*
* TODO: convert into 'staitc inline' function
*/
#define KEY_INIT() do { \
DDRB |= 0x7F; \
DDRE |= (1<<7); \
DDRE &= ~(1<<6); \
PORTE |= (1<<6); \
} while (0)
#define KEY_SELECT(ROW, COL) (PORTB = (PORTB & 0xC0) | \
(((COL) & 0x07)<<3) | \
((ROW) & 0x07))
#define KEY_ENABLE() (PORTB &= ~(1<<6))
#define KEY_UNABLE() (PORTB |= (1<<6))
#define KEY_STATE() (PINE & (1<<6))
#define KEY_PREV_ON() (PORTE |= (1<<7))
#define KEY_PREV_OFF() (PORTE &= ~(1<<7))
#define KEY_POWER_ON()
#define KEY_POWER_OFF()


#else
# error "define code for matrix scan"
#endif


#if 0
// For ATMega328P with V-USB
//
// #elif defined(__AVR_ATmega328P__)
// Ports for V-USB
// key: PB0(pull-uped)
// prev: PB1
// row: PB2-4
// col: PC0-2,3
// power: PB5(Low:on/Hi-z:off)
#define KEY_INIT() do { \
DDRB |= 0x3E; \
DDRB &= ~(1<<0); \
PORTB |= 1<<0; \
DDRC |= 0x0F; \
KEY_UNABLE(); \
KEY_PREV_OFF(); \
} while (0)
#define KEY_SELECT(ROW, COL) do { \
PORTB = (PORTB & 0xE3) | ((ROW) & 0x07)<<2; \
PORTC = (PORTC & 0xF8) | ((COL) & 0x07); \
} while (0)
#define KEY_ENABLE() (PORTC &= ~(1<<3))
#define KEY_UNABLE() (PORTC |= (1<<3))
#define KEY_STATE() (PINB & (1<<0))
#define KEY_PREV_ON() (PORTB |= (1<<1))
#define KEY_PREV_OFF() (PORTB &= ~(1<<1))
// Power supply switching
#define KEY_POWER_ON() do { \
KEY_INIT(); \
PORTB &= ~(1<<5); \
_delay_ms(1); \
} while (0)
#define KEY_POWER_OFF() do { \
DDRB &= ~0x3F; \
PORTB &= ~0x3F; \
DDRC &= ~0x0F; \
PORTC &= ~0x0F; \
} while (0)
#endif

#endif

+ 27
- 0
keyboard/hhkb/keymap_common.h View File

@@ -54,4 +54,31 @@ extern const uint16_t fn_actions[];
{ KC_##K70, KC_##K71, KC_##K72, KC_##K73, KC_##K74, KC_##K75, KC_##K76, KC_NO } \
}


#define KEYMAP_JP( \
K02, K32, K62, K22, K12, K52, K72, KA2, K92, K82, KB2, KE2, KF2, KD2, KC2, \
K03, K63, K23, K13, K53, K73, KA3, K93, K83, KB3, KE3, KF3, KD3, \
K06, K66, K26, K16, K56, K76, KA6, K96, K86, KB6, KE6, KF6, KD6, KC6, \
K05, K65, K25, K15, K55, K75, KA5, K95, K85, KB5, KE5, KF5, KD5, KC5, \
K04, K34, K64, K24, K14, K74, K94, K84, KB4, KE4, KF4, KD4, KC4 \
) \
{ \
{ KC_NO, KC_NO, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_NO }, \
{ KC_NO, KC_NO, KC_##K12, KC_##K13, KC_##K14, KC_##K15, KC_##K16, KC_NO }, \
{ KC_NO, KC_NO, KC_##K22, KC_##K23, KC_##K24, KC_##K25, KC_##K26, KC_NO }, \
{ KC_NO, KC_NO, KC_##K32, KC_NO, KC_##K34, 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_##K52, KC_##K53, KC_NO, KC_##K55, KC_##K56, KC_NO }, \
{ KC_NO, KC_NO, KC_##K62, KC_##K63, KC_##K64, KC_##K65, KC_##K66, KC_NO }, \
{ KC_NO, KC_NO, KC_##K72, KC_##K73, KC_##K74, KC_##K75, KC_##K76, KC_NO }, \
{ KC_NO, KC_NO, KC_##K82, KC_##K83, KC_##K84, KC_##K85, KC_##K86, KC_NO }, \
{ KC_NO, KC_NO, KC_##K92, KC_##K93, KC_##K94, KC_##K95, KC_##K96, KC_NO }, \
{ KC_NO, KC_NO, KC_##KA2, KC_##KA3, KC_NO, KC_##KA5, KC_##KA6, KC_NO }, \
{ KC_NO, KC_NO, KC_##KB2, KC_##KB3, KC_##KB4, KC_##KB5, KC_##KB6, KC_NO }, \
{ KC_NO, KC_NO, KC_##KC2, KC_NO, KC_##KC4, KC_##KC5, KC_##KC6, KC_NO }, \
{ KC_NO, KC_NO, KC_##KD2, KC_##KD3, KC_##KD4, KC_##KD5, KC_##KD6, KC_NO }, \
{ KC_NO, KC_NO, KC_##KE2, KC_##KE3, KC_##KE4, KC_##KE5, KC_##KE6, KC_NO }, \
{ KC_NO, KC_NO, KC_##KF2, KC_##KF3, KC_##KF4, KC_##KF5, KC_##KF6, KC_NO } \
}

#endif

+ 50
- 0
keyboard/hhkb/keymap_jp.c View File

@@ -0,0 +1,50 @@
/*
* HHKB JP Layout
*/
#include "keymap_common.h"


#ifdef KEYMAP_SECTION_ENABLE
const uint8_t keymaps[][MATRIX_ROWS][MATRIX_COLS] __attribute__ ((section (".keymap.keymaps"))) = {
#else
const uint8_t keymaps[][MATRIX_ROWS][MATRIX_COLS] PROGMEM = {
#endif
/* Layer 0: Default Layer */
KEYMAP_JP(ESC, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, MINS,EQL, JYEN,BSPC, \
TAB, Q, W, E, R, T, Y, U, I, O, P, LBRC,RBRC, \
LCTL,A, S, D, F, G, H, J, K, L, SCLN,QUOT,BSLS,ENT, \
LSFT,Z, X, C, V, B, N, M, COMM,DOT, SLSH,RO, UP, RSFT, \
FN0, ZKHK,LGUI,LALT,MHEN, SPC, HENK,KANA,RALT,FN0, LEFT,DOWN,RGHT),

/* Layer 1: HHKB mode (HHKB Fn)
* ,-----------------------------------------------------------.
* |Pwr| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Ins|Del|
* |-----------------------------------------------------------|
* |Caps | | | | | | | |Psc|Slk|Pus|Up | | |
* |------------------------------------------------------` |
* | |VoD|VoU|Mut| | | *| /|Hom|PgU|Lef|Rig| | |
* |-----------------------------------------------------------|
* | | | | | | | +| -|End|PgD|Dow| | | |
* |-----------------------------------------------------------|
* | || | | | | | | | | || | | |
* `-----------------------------------------------------------'
*/
KEYMAP_JP(PWR, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, INS, DEL, \
CAPS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,PSCR,SLCK,PAUS, UP, TRNS, \
TRNS,VOLD,VOLU,MUTE,TRNS,TRNS,PAST,PSLS,HOME,PGUP,LEFT,RGHT,TRNS,PENT, \
TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,PPLS,PMNS,END, PGDN,DOWN,TRNS,TRNS,TRNS, \
TRNS,TRNS,TRNS,TRNS,TRNS, TRNS, TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS),
};



/*
* Fn action definition
*/
#ifdef KEYMAP_SECTION_ENABLE
const uint16_t fn_actions[] __attribute__ ((section (".keymap.fn_actions"))) = {
#else
const uint16_t fn_actions[] PROGMEM = {
#endif
[0] = ACTION_LAYER_MOMENTARY(1),
};

+ 6
- 127
keyboard/hhkb/matrix.c View File

@@ -20,20 +20,13 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "print.h"
#include "debug.h"
#include "util.h"
#include "timer.h"
#include "matrix.h"


// Timer resolution check
#if (1000000/TIMER_RAW_FREQ > 20)
# error "Timer resolution(>20us) is not enough for HHKB matrix scan tweak on V-USB."
#endif
#include "hhkb_avr.h"


// matrix state buffer(1:on, 0:off)
@@ -43,122 +36,6 @@ static matrix_row_t _matrix0[MATRIX_ROWS];
static matrix_row_t _matrix1[MATRIX_ROWS];


// Matrix I/O ports
//
// row: HC4051[A,B,C] selects scan row0-7
// col: LS145[A,B,C,D] selects scan col0-7 and enable(D)
// key: on: 0/off: 1
// prev: unknown: output previous key state(negated)?

#if defined(__AVR_AT90USB1286__)
// Ports for Teensy++
// row: PB0-2
// col: PB3-5,6
// key: PE6(pull-uped)
// prev: PE7
#define KEY_INIT() do { \
DDRB |= 0x7F; \
DDRE |= (1<<7); \
DDRE &= ~(1<<6); \
PORTE |= (1<<6); \
} while (0)
#define KEY_SELECT(ROW, COL) (PORTB = (PORTB & 0xC0) | \
(((COL) & 0x07)<<3) | \
((ROW) & 0x07))
#define KEY_ENABLE() (PORTB &= ~(1<<6))
#define KEY_UNABLE() (PORTB |= (1<<6))
#define KEY_STATE() (PINE & (1<<6))
#define KEY_PREV_ON() (PORTE |= (1<<7))
#define KEY_PREV_OFF() (PORTE &= ~(1<<7))
#define KEY_POWER_ON()
#define KEY_POWER_OFF()

#elif defined(__AVR_ATmega32U4__)
// Ports for my designed Alt Controller PCB
// row: PB0-2
// col: PB3-5,6
// key: PD7(pull-uped)
// prev: PB7
// power: PD4(L:off/H:on)
#define KEY_INIT() do { \
DDRB = 0xFF; \
PORTB = 0x00; \
DDRD &= ~0x80; \
PORTD |= 0x80; \
/* keyswitch board power on */ \
DDRD |= (1<<4); \
PORTD |= (1<<4); \
KEY_UNABLE(); \
KEY_PREV_OFF(); \
} while (0)
#define KEY_SELECT(ROW, COL) (PORTB = (PORTB & 0xC0) | \
(((COL) & 0x07)<<3) | \
((ROW) & 0x07))
#define KEY_ENABLE() (PORTB &= ~(1<<6))
#define KEY_UNABLE() (PORTB |= (1<<6))
#define KEY_STATE() (PIND & (1<<7))
#define KEY_PREV_ON() (PORTB |= (1<<7))
#define KEY_PREV_OFF() (PORTB &= ~(1<<7))
#define KEY_POWER_ON()
#define KEY_POWER_OFF()
/*
#define KEY_POWER_ON() do { \
KEY_INIT(); \
PORTD |= (1<<4); \
_delay_ms(1); \
} while (0)
#define KEY_POWER_OFF() do { \
PORTD &= ~(1<<4); \
DDRB &= ~0xFF; \
PORTB &= ~0xFF; \
DDRB &= ~0x80; \
PORTB &= ~0x80; \
} while (0)
*/


#elif defined(__AVR_ATmega328P__)
// Ports for V-USB
// key: PB0(pull-uped)
// prev: PB1
// row: PB2-4
// col: PC0-2,3
// power: PB5(Low:on/Hi-z:off)
#define KEY_INIT() do { \
DDRB |= 0x3E; \
DDRB &= ~(1<<0); \
PORTB |= 1<<0; \
DDRC |= 0x0F; \
KEY_UNABLE(); \
KEY_PREV_OFF(); \
} while (0)
#define KEY_SELECT(ROW, COL) do { \
PORTB = (PORTB & 0xE3) | ((ROW) & 0x07)<<2; \
PORTC = (PORTC & 0xF8) | ((COL) & 0x07); \
} while (0)
#define KEY_ENABLE() (PORTC &= ~(1<<3))
#define KEY_UNABLE() (PORTC |= (1<<3))
#define KEY_STATE() (PINB & (1<<0))
#define KEY_PREV_ON() (PORTB |= (1<<1))
#define KEY_PREV_OFF() (PORTB &= ~(1<<1))
// Power supply switching
#define KEY_POWER_ON() do { \
KEY_INIT(); \
PORTB &= ~(1<<5); \
_delay_ms(1); \
} while (0)
#define KEY_POWER_OFF() do { \
DDRB &= ~0x3F; \
PORTB &= ~0x3F; \
DDRC &= ~0x0F; \
PORTC &= ~0x0F; \
} while (0)

#else
# error "define code for matrix scan"
#endif


inline
uint8_t matrix_rows(void)
{
@@ -199,13 +76,13 @@ uint8_t matrix_scan(void)
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
KEY_SELECT(row, col);
_delay_us(40);
_delay_us(5);

// Not sure this is needed. This just emulates HHKB controller's behaviour.
if (matrix_prev[row] & (1<<col)) {
KEY_PREV_ON();
}
_delay_us(7);
_delay_us(10);

// NOTE: KEY_STATE is valid only in 20us after KEY_ENABLE.
// If V-USB interrupts in this section we could lose 40us or so
@@ -241,11 +118,13 @@ uint8_t matrix_scan(void)
matrix[row] = matrix_prev[row];
}

_delay_us(5);
KEY_PREV_OFF();
KEY_UNABLE();

// NOTE: KEY_STATE keep its state in 20us after KEY_ENABLE.
// This takes 25us or more to make sure KEY_STATE returns to idle state.
_delay_us(150);
_delay_us(75);
}
}
KEY_POWER_OFF();