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git.gir.st - tmk_keyboard.git/blob - keyboard/hhkb_rn42/hhkb_avr.h
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
57 static inline void KEY_POWER_ON(void) {}
58 static inline void KEY_POWER_OFF(void) {}
60 static inline void KEY_INIT(void)
62 /* row,col,prev: output */
64 PORTB
= 0x40; // unable
65 /* key: input with pull-up */
69 /* row extention for HHKB JP */
78 static inline void KEY_SELECT(uint8_t ROW
, uint8_t COL
)
80 PORTB
= (PORTB
& 0xC0) | (((COL
) & 0x07)<<3) | ((ROW
) & 0x07);
82 if ((ROW
) & 0x08) PORTC
= (PORTC
& ~(1<<6|1<<7)) | (1<<6);
83 else PORTC
= (PORTC
& ~(1<<6|1<<7)) | (1<<7);
88 #elif defined(__AVR_AT90USB1286__)
90 * For Teensy++(AT90USB1286)
93 * row: PB0-2 (6-8) (5-7)
94 * col: PB3-5,6 (9-12) (8-11)
95 * key: PE6(pull-uped) (4) (3)
98 * TODO: convert into 'staitc inline' function
100 #define KEY_INIT() do { \
106 #define KEY_SELECT(ROW, COL) (PORTB = (PORTB & 0xC0) | \
107 (((COL) & 0x07)<<3) | \
109 #define KEY_ENABLE() (PORTB &= ~(1<<6))
110 #define KEY_UNABLE() (PORTB |= (1<<6))
111 #define KEY_STATE() (PINE & (1<<6))
112 #define KEY_PREV_ON() (PORTE |= (1<<7))
113 #define KEY_PREV_OFF() (PORTE &= ~(1<<7))
114 #define KEY_POWER_ON()
115 #define KEY_POWER_OFF()
119 # error "define code for matrix scan"
124 // For ATMega328P with V-USB
126 // #elif defined(__AVR_ATmega328P__)
128 // key: PB0(pull-uped)
132 // power: PB5(Low:on/Hi-z:off)
133 #define KEY_INIT() do { \
141 #define KEY_SELECT(ROW, COL) do { \
142 PORTB = (PORTB & 0xE3) | ((ROW) & 0x07)<<2; \
143 PORTC = (PORTC & 0xF8) | ((COL) & 0x07); \
145 #define KEY_ENABLE() (PORTC &= ~(1<<3))
146 #define KEY_UNABLE() (PORTC |= (1<<3))
147 #define KEY_STATE() (PINB & (1<<0))
148 #define KEY_PREV_ON() (PORTB |= (1<<1))
149 #define KEY_PREV_OFF() (PORTB &= ~(1<<1))
150 // Power supply switching
151 #define KEY_POWER_ON() do { \
156 #define KEY_POWER_OFF() do { \