diff options
Diffstat (limited to 'keyboard/hhkb_rn42/hhkb_avr.h')
| -rw-r--r-- | keyboard/hhkb_rn42/hhkb_avr.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/keyboard/hhkb_rn42/hhkb_avr.h b/keyboard/hhkb_rn42/hhkb_avr.h new file mode 100644 index 000000000..f007d7667 --- /dev/null +++ b/keyboard/hhkb_rn42/hhkb_avr.h @@ -0,0 +1,164 @@ +#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)); } +#ifdef HHKB_POWER_SAVING +static inline void KEY_POWER_ON(void) { + DDRB = 0xFF; PORTB = 0x40; // change pins output + DDRD |= (1<<4); PORTD |= (1<<4); // MOS FET switch on + /* Without this wait you will miss or get false key events. */ + _delay_ms(5); // wait for powering up +} +static inline void KEY_POWER_OFF(void) { + /* input with pull-up consumes less than without it when pin is open. */ + DDRB = 0x00; PORTB = 0xFF; // change pins input with pull-up + DDRD |= (1<<4); PORTD &= ~(1<<4); // MOS FET switch off +} +#else +static inline void KEY_POWER_ON(void) {} +static inline void KEY_POWER_OFF(void) {} +#endif +static inline void KEY_INIT(void) +{ + /* row,col,prev: output */ + DDRB = 0xFF; + PORTB = 0x40; // unable + /* key: input with pull-up */ + DDRD &= ~0x80; + PORTD |= 0x80; +#ifdef HHKB_JP + /* row extention for HHKB JP */ + DDRC |= (1<<6|1<<7); + PORTC |= (1<<6|1<<7); +#endif + KEY_UNABLE(); + KEY_PREV_OFF(); + + KEY_POWER_ON(); +} +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 |