-
Notifications
You must be signed in to change notification settings - Fork 5
/
hhkb_avr.h
167 lines (152 loc) · 4.97 KB
/
hhkb_avr.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
#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
}
static inline bool KEY_POWER_STATE(void) { return PORTD & (1<<4); }
#else
static inline void KEY_POWER_ON(void) {}
static inline void KEY_POWER_OFF(void) {}
static inline bool KEY_POWER_STATE(void) { return true; }
#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_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()
#define KEY_POWER_STATE() true
#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