7 #include <avr/interrupt.h>
8 #include <util/delay.h>
11 // Timer resolution check
12 #if (1000000/TIMER_RAW_FREQ > 20)
13 # error "Timer resolution(>20us) is not enough for HHKB matrix scan tweak on V-USB."
20 * row: HC4051[A,B,C] selects scan row0-7
21 * row-ext: [En0,En1] row extention for JP
22 * col: LS145[A,B,C,D] selects scan col0-7 and enable(D)
24 * prev: hysteresis control: assert(1) when previous key state is on
28 #if defined(__AVR_ATmega32U4__)
30 * For TMK HHKB alt controller(ATMega32U4)
36 * power: PD4(L:off/H:on)
37 * row-ext: PC6,7 for HHKB JP(active low)
39 static inline void KEY_ENABLE(void) { (PORTB &= ~(1<<6)); }
40 static inline void KEY_UNABLE(void) { (PORTB |= (1<<6)); }
41 static inline bool KEY_STATE(void) { return (PIND & (1<<7)); }
42 static inline void KEY_PREV_ON(void) { (PORTB |= (1<<7)); }
43 static inline void KEY_PREV_OFF(void) { (PORTB &= ~(1<<7)); }
44 #ifdef HHKB_POWER_SAVING
45 static inline void KEY_POWER_ON(void) {
46 DDRB = 0xFF; PORTB = 0x40; // change pins output
47 DDRD |= (1<<4); PORTD |= (1<<4); // MOS FET switch on
48 /* Without this wait you will miss or get false key events. */
49 _delay_ms(5); // wait for powering up
51 static inline void KEY_POWER_OFF(void) {
52 /* input with pull-up consumes less than without it when pin is open. */
53 DDRB = 0x00; PORTB = 0xFF; // change pins input with pull-up
54 DDRD |= (1<<4); PORTD &= ~(1<<4); // MOS FET switch off
56 static inline bool KEY_POWER_STATE(void) { return PORTD & (1<<4); }
58 static inline void KEY_POWER_ON(void) {}
59 static inline void KEY_POWER_OFF(void) {}
60 static inline bool KEY_POWER_STATE(void) { return true; }
62 static inline void KEY_INIT(void)
64 /* row,col,prev: output */
66 PORTB = 0x40; // unable
67 /* key: input with pull-up */
71 /* row extention for HHKB JP */
73 PORTC &= ~(1<<6|1<<7);
80 static inline void KEY_SELECT(uint8_t ROW, uint8_t COL)
82 PORTB = (PORTB & 0xC0) | (((COL) & 0x07)<<3) | ((ROW) & 0x07);
84 if ((ROW) & 0x08) PORTC = (PORTC & ~(1<<6|1<<7)) | (1<<6);
85 else PORTC = (PORTC & ~(1<<6|1<<7)) | (1<<7);
90 #elif defined(__AVR_AT90USB1286__)
92 * For Teensy++(AT90USB1286)
95 * row: PB0-2 (6-8) (5-7)
96 * col: PB3-5,6 (9-12) (8-11)
97 * key: PE6(pull-uped) (4) (3)
100 * TODO: convert into 'staitc inline' function
102 #define KEY_INIT() do { \
108 #define KEY_SELECT(ROW, COL) (PORTB = (PORTB & 0xC0) | \
109 (((COL) & 0x07)<<3) | \
111 #define KEY_ENABLE() (PORTB &= ~(1<<6))
112 #define KEY_UNABLE() (PORTB |= (1<<6))
113 #define KEY_STATE() (PINE & (1<<6))
114 #define KEY_PREV_ON() (PORTE |= (1<<7))
115 #define KEY_PREV_OFF() (PORTE &= ~(1<<7))
116 #define KEY_POWER_ON()
117 #define KEY_POWER_OFF()
118 #define KEY_POWER_STATE() true
122 # error "define code for matrix scan"
127 // For ATMega328P with V-USB
129 // #elif defined(__AVR_ATmega328P__)
131 // key: PB0(pull-uped)
135 // power: PB5(Low:on/Hi-z:off)
136 #define KEY_INIT() do { \
144 #define KEY_SELECT(ROW, COL) do { \
145 PORTB = (PORTB & 0xE3) | ((ROW) & 0x07)<<2; \
146 PORTC = (PORTC & 0xF8) | ((COL) & 0x07); \
148 #define KEY_ENABLE() (PORTC &= ~(1<<3))
149 #define KEY_UNABLE() (PORTC |= (1<<3))
150 #define KEY_STATE() (PINB & (1<<0))
151 #define KEY_PREV_ON() (PORTB |= (1<<1))
152 #define KEY_PREV_OFF() (PORTB &= ~(1<<1))
153 // Power supply switching
154 #define KEY_POWER_ON() do { \
159 #define KEY_POWER_OFF() do { \