hhkb_avr.h (6524B)
1 #pragma once 2 3 #include <stdint.h> 4 #include <stdbool.h> 5 #include <avr/io.h> 6 #include <avr/interrupt.h> 7 #include <util/delay.h> 8 9 10 // Timer resolution check 11 #if (1000000/TIMER_RAW_FREQ > 20) 12 # error "Timer resolution(>20us) is not enough for HHKB matrix scan tweak on V-USB." 13 #endif 14 15 16 /* 17 * HHKB Matrix I/O 18 * 19 * row: HC4051[A,B,C] selects scan row0-7 20 * row-ext: [En0,En1] row extention for JP 21 * col: LS145[A,B,C,D] selects scan col0-7 and enable(D) 22 * key: on: 0/off: 1 23 * prev: hysteresis control: assert(1) when previous key state is on 24 */ 25 26 27 #if defined(__AVR_ATmega32U4__) 28 /* 29 * For TMK HHKB alt controller(ATMega32U4) 30 * 31 * row: PB0-2 32 * col: PB3-5,6 33 * key: PD7(pull-uped) 34 * prev: PB7 35 * power: PD4(L:off/H:on) 36 * row-ext: PC6,7 for HHKB JP(active low) 37 */ 38 static inline void KEY_ENABLE(void) { (PORTB &= ~(1<<6)); } 39 static inline void KEY_UNABLE(void) { (PORTB |= (1<<6)); } 40 static inline bool KEY_STATE(void) { return (PIND & (1<<7)); } 41 static inline void KEY_PREV_ON(void) { (PORTB |= (1<<7)); } 42 static inline void KEY_PREV_OFF(void) { (PORTB &= ~(1<<7)); } 43 #ifdef HHKB_POWER_SAVING 44 static inline void KEY_POWER_ON(void) { 45 DDRB = 0xFF; PORTB = 0x40; // change pins output 46 DDRD |= (1<<4); PORTD |= (1<<4); // MOS FET switch on 47 /* Without this wait you will miss or get false key events. */ 48 _delay_ms(5); // wait for powering up 49 } 50 static inline void KEY_POWER_OFF(void) { 51 /* input with pull-up consumes less than without it when pin is open. */ 52 DDRB = 0x00; PORTB = 0xFF; // change pins input with pull-up 53 DDRD |= (1<<4); PORTD &= ~(1<<4); // MOS FET switch off 54 } 55 static inline bool KEY_POWER_STATE(void) { return PORTD & (1<<4); } 56 #else 57 static inline void KEY_POWER_ON(void) {} 58 static inline void KEY_POWER_OFF(void) {} 59 static inline bool KEY_POWER_STATE(void) { return true; } 60 #endif 61 static inline void KEY_INIT(void) 62 { 63 /* row,col,prev: output */ 64 DDRB = 0xFF; 65 PORTB = 0x40; // unable 66 /* key: input with pull-up */ 67 DDRD &= ~0x80; 68 PORTD |= 0x80; 69 70 KEY_UNABLE(); 71 KEY_PREV_OFF(); 72 73 KEY_POWER_OFF(); 74 } 75 static inline void KEY_SELECT(uint8_t ROW, uint8_t COL) 76 { 77 PORTB = (PORTB & 0xC0) | (((COL) & 0x07)<<3) | ((ROW) & 0x07); 78 79 } 80 81 #elif defined(__AVR_ATmega32U2__) 82 /* 83 * For TMK HHKB alt controller(ATMega32U4) 84 * 85 * row: PB0-2 86 * col: PB3-5,6 87 * key: PD3(pull-uped) 88 * prev: PB7 89 * power: PD4(L:off/H:on) 90 * row-ext: PC6,7 for HHKB JP(active low) 91 */ 92 static inline void KEY_ENABLE(void) { (PORTB &= ~(1<<6)); } 93 static inline void KEY_UNABLE(void) { (PORTB |= (1<<6)); } 94 static inline bool KEY_STATE(void) { return (PIND & (1<<3)); } 95 static inline void KEY_PREV_ON(void) { (PORTB |= (1<<7)); } 96 static inline void KEY_PREV_OFF(void) { (PORTB &= ~(1<<7)); } 97 #ifdef HHKB_POWER_SAVING 98 static inline void KEY_POWER_ON(void) { 99 DDRB = 0xFF; PORTB = 0x40; // change pins output 100 DDRD |= (1<<4); PORTD |= (1<<4); // MOS FET switch on 101 /* Without this wait you will miss or get false key events. */ 102 _delay_ms(5); // wait for powering up 103 } 104 static inline void KEY_POWER_OFF(void) { 105 /* input with pull-up consumes less than without it when pin is open. */ 106 DDRB = 0x00; PORTB = 0xFF; // change pins input with pull-up 107 DDRD |= (1<<4); PORTD &= ~(1<<4); // MOS FET switch off 108 } 109 static inline bool KEY_POWER_STATE(void) { return PORTD & (1<<4); } 110 #else 111 static inline void KEY_POWER_ON(void) {} 112 static inline void KEY_POWER_OFF(void) {} 113 static inline bool KEY_POWER_STATE(void) { return true; } 114 #endif 115 static inline void KEY_INIT(void) 116 { 117 /* row,col,prev: output */ 118 DDRB = 0xFF; 119 PORTB = 0x40; // unable 120 /* key: input with pull-up */ 121 DDRD &= ~0x80; 122 PORTD |= 0x80; 123 124 KEY_UNABLE(); 125 KEY_PREV_OFF(); 126 127 KEY_POWER_OFF(); 128 } 129 static inline void KEY_SELECT(uint8_t ROW, uint8_t COL) 130 { 131 PORTB = (PORTB & 0xC0) | (((COL) & 0x07)<<3) | ((ROW) & 0x07); 132 133 } 134 135 136 #elif defined(__AVR_AT90USB1286__) 137 /* 138 * For Teensy++(AT90USB1286) 139 * 140 * HHKB pro HHKB pro2 141 * row: PB0-2 (6-8) (5-7) 142 * col: PB3-5,6 (9-12) (8-11) 143 * key: PE6(pull-uped) (4) (3) 144 * prev: PE7 (5) (4) 145 * 146 * TODO: convert into 'staitc inline' function 147 */ 148 #define KEY_INIT() do { \ 149 DDRB |= 0x7F; \ 150 DDRE |= (1<<7); \ 151 DDRE &= ~(1<<6); \ 152 PORTE |= (1<<6); \ 153 } while (0) 154 #define KEY_SELECT(ROW, COL) (PORTB = (PORTB & 0xC0) | \ 155 (((COL) & 0x07)<<3) | \ 156 ((ROW) & 0x07)) 157 #define KEY_ENABLE() (PORTB &= ~(1<<6)) 158 #define KEY_UNABLE() (PORTB |= (1<<6)) 159 #define KEY_STATE() (PINE & (1<<6)) 160 #define KEY_PREV_ON() (PORTE |= (1<<7)) 161 #define KEY_PREV_OFF() (PORTE &= ~(1<<7)) 162 #define KEY_POWER_ON() 163 #define KEY_POWER_OFF() 164 #define KEY_POWER_STATE() true 165 166 167 #else 168 # error "define code for matrix scan" 169 #endif 170 171 172 #if 0 173 // For ATMega328P with V-USB 174 // 175 // #elif defined(__AVR_ATmega328P__) 176 // Ports for V-USB 177 // key: PB0(pull-uped) 178 // prev: PB1 179 // row: PB2-4 180 // col: PC0-2,3 181 // power: PB5(Low:on/Hi-z:off) 182 #define KEY_INIT() do { \ 183 DDRB |= 0x3E; \ 184 DDRB &= ~(1<<0); \ 185 PORTB |= 1<<0; \ 186 DDRC |= 0x0F; \ 187 KEY_UNABLE(); \ 188 KEY_PREV_OFF(); \ 189 } while (0) 190 #define KEY_SELECT(ROW, COL) do { \ 191 PORTB = (PORTB & 0xE3) | ((ROW) & 0x07)<<2; \ 192 PORTC = (PORTC & 0xF8) | ((COL) & 0x07); \ 193 } while (0) 194 #define KEY_ENABLE() (PORTC &= ~(1<<3)) 195 #define KEY_UNABLE() (PORTC |= (1<<3)) 196 #define KEY_STATE() (PINB & (1<<0)) 197 #define KEY_PREV_ON() (PORTB |= (1<<1)) 198 #define KEY_PREV_OFF() (PORTB &= ~(1<<1)) 199 // Power supply switching 200 #define KEY_POWER_ON() do { \ 201 KEY_INIT(); \ 202 PORTB &= ~(1<<5); \ 203 _delay_ms(1); \ 204 } while (0) 205 #define KEY_POWER_OFF() do { \ 206 DDRB &= ~0x3F; \ 207 PORTB &= ~0x3F; \ 208 DDRC &= ~0x0F; \ 209 PORTC &= ~0x0F; \ 210 } while (0) 211 #endif