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 static inline void KEY_POWER_ON(void) {}
45 static inline void KEY_POWER_OFF(void) {}
46 static inline void KEY_INIT(void)
52 /* keyswitch board power on */
56 /* row extention for HHKB JP */
63 static inline void KEY_SELECT(uint8_t ROW, uint8_t COL)
65 PORTB = (PORTB & 0xC0) | (((COL) & 0x07)<<3) | ((ROW) & 0x07);
67 if ((ROW) & 0x08) PORTC = (PORTC & ~(1<<6|1<<7)) | (1<<6);
68 else PORTC = (PORTC & ~(1<<6|1<<7)) | (1<<7);
73 #elif defined(__AVR_AT90USB1286__)
75 * For Teensy++(AT90USB1286)
78 * row: PB0-2 (6-8) (5-7)
79 * col: PB3-5,6 (9-12) (8-11)
80 * key: PE6(pull-uped) (4) (3)
83 * TODO: convert into 'staitc inline' function
85 #define KEY_INIT() do { \
91 #define KEY_SELECT(ROW, COL) (PORTB = (PORTB & 0xC0) | \
92 (((COL) & 0x07)<<3) | \
94 #define KEY_ENABLE() (PORTB &= ~(1<<6))
95 #define KEY_UNABLE() (PORTB |= (1<<6))
96 #define KEY_STATE() (PINE & (1<<6))
97 #define KEY_PREV_ON() (PORTE |= (1<<7))
98 #define KEY_PREV_OFF() (PORTE &= ~(1<<7))
99 #define KEY_POWER_ON()
100 #define KEY_POWER_OFF()
104 # error "define code for matrix scan"
109 // For ATMega328P with V-USB
111 // #elif defined(__AVR_ATmega328P__)
113 // key: PB0(pull-uped)
117 // power: PB5(Low:on/Hi-z:off)
118 #define KEY_INIT() do { \
126 #define KEY_SELECT(ROW, COL) do { \
127 PORTB = (PORTB & 0xE3) | ((ROW) & 0x07)<<2; \
128 PORTC = (PORTC & 0xF8) | ((COL) & 0x07); \
130 #define KEY_ENABLE() (PORTC &= ~(1<<3))
131 #define KEY_UNABLE() (PORTC |= (1<<3))
132 #define KEY_STATE() (PINB & (1<<0))
133 #define KEY_PREV_ON() (PORTB |= (1<<1))
134 #define KEY_PREV_OFF() (PORTB &= ~(1<<1))
135 // Power supply switching
136 #define KEY_POWER_ON() do { \
141 #define KEY_POWER_OFF() do { \