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- #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)
- *
- * HHKB pro HHKB pro2
- * row: PB0-2 (6-8) (5-7)
- * col: PB3-5,6 (9-12) (8-11)
- * key: PE6(pull-uped) (4) (3)
- * prev: PE7 (5) (4)
- *
- * 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
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