1 /* Copyright 2012 Jun Wako <wakojun@gmail.com>
3 * This is heavily based on hid_liber/board.{c|h}.
4 * https://github.com/BathroomEpiphanies/AVR-Keyboard
6 * Copyright (c) 2012 Fredrik Atmer, Bathroom Epiphanies Inc
7 * http://bathroomepiphanies.com
9 * As for liscensing consult with the original files or its author.
14 #include <util/delay.h>
24 static uint8_t debouncing
= DEBOUNCE
;
26 // bit array of key state(1:on, 0:off)
27 static matrix_row_t matrix
[MATRIX_ROWS
];
28 static matrix_row_t matrix_debouncing
[MATRIX_ROWS
];
31 #define _DDRA (uint8_t *const)&DDRA
32 #define _DDRB (uint8_t *const)&DDRB
33 #define _DDRC (uint8_t *const)&DDRC
34 #define _DDRD (uint8_t *const)&DDRD
35 #define _DDRE (uint8_t *const)&DDRE
36 #define _DDRF (uint8_t *const)&DDRF
38 #define _PINA (uint8_t *const)&PINA
39 #define _PINB (uint8_t *const)&PINB
40 #define _PINC (uint8_t *const)&PINC
41 #define _PIND (uint8_t *const)&PIND
42 #define _PINE (uint8_t *const)&PINE
43 #define _PINF (uint8_t *const)&PINF
45 #define _PORTA (uint8_t *const)&PORTA
46 #define _PORTB (uint8_t *const)&PORTB
47 #define _PORTC (uint8_t *const)&PORTC
48 #define _PORTD (uint8_t *const)&PORTD
49 #define _PORTE (uint8_t *const)&PORTE
50 #define _PORTF (uint8_t *const)&PORTF
61 /* Specifies the ports and pin numbers for the rows */
63 uint8_t *const row_ddr
[MATRIX_ROWS
] = {
66 _DDRD
, _DDRD
, _DDRD
, _DDRD
, _DDRD
, _DDRD
, _DDRD
, _DDRD
,
67 _DDRF
, _DDRF
, _DDRF
, _DDRF
, _DDRF
, _DDRF
};
70 uint8_t *const row_port
[MATRIX_ROWS
] = {
73 _PORTD
, _PORTD
, _PORTD
, _PORTD
, _PORTD
, _PORTD
, _PORTD
, _PORTD
,
74 _PORTF
, _PORTF
, _PORTF
, _PORTF
, _PORTF
, _PORTF
};
77 uint8_t *const row_pin
[MATRIX_ROWS
] = {
80 _PIND
, _PIND
, _PIND
, _PIND
, _PIND
, _PIND
, _PIND
, _PIND
,
81 _PINF
, _PINF
, _PINF
, _PINF
, _PINF
, _PINF
};
84 const uint8_t row_bit
[MATRIX_ROWS
] = {
87 _BIT0
, _BIT1
, _BIT2
, _BIT3
, _BIT4
, _BIT5
, _BIT6
, _BIT7
,
88 _BIT0
, _BIT1
, _BIT4
, _BIT5
, _BIT6
, _BIT7
};
91 const uint8_t mask
= 0x0E;
93 /* Specifies the ports and pin numbers for the columns */
95 const uint8_t col_bit
[MATRIX_COLS
] = { 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E};
98 inline void pull_column(int col
) {
99 PORTB
= col_bit
[col
] | (PORTB
& ~mask
);
103 inline void release_column(int col
) {
106 /* PORTB is set as input with pull-up resistors
107 PORTC,D,E,F are set to high output */
109 void setup_io_pins(void) {
113 for(row
= 0; row
< MATRIX_ROWS
; row
++) {
114 *row_ddr
[row
] &= ~row_bit
[row
];
115 *row_port
[row
] &= ~row_bit
[row
];
120 void setup_leds(void) {
127 uint8_t matrix_rows(void)
133 uint8_t matrix_cols(void)
138 void matrix_init(void)
140 // To use PORTF disable JTAG with writing JTD bit twice within four cycles.
144 // initialize row and col
148 // initialize matrix state: all keys off
149 for (uint8_t i
=0; i
< MATRIX_ROWS
; i
++) {
151 matrix_debouncing
[i
] = 0;
155 uint8_t matrix_scan(void)
157 for (uint8_t col
= 0; col
< MATRIX_COLS
; col
++) { // 0-7
158 pull_column(col
); // output hi on theline
159 _delay_us(5); // without this wait it won't read stable value.
160 for (uint8_t row
= 0; row
< MATRIX_ROWS
; row
++) { // 0-17
161 bool prev_bit
= matrix_debouncing
[row
] & (1<<col
);
162 bool curr_bit
= *row_pin
[row
] & row_bit
[row
];
163 if (prev_bit
!= curr_bit
) {
164 matrix_debouncing
[row
] ^= ((matrix_row_t
)1<<col
);
166 dprintf("bounce!: %02X\n", debouncing
);
168 debouncing
= DEBOUNCE
;
178 for (uint8_t i
= 0; i
< MATRIX_ROWS
; i
++) {
179 matrix
[i
] = matrix_debouncing
[i
];
187 bool matrix_is_modified(void)
189 // NOTE: no longer used
194 bool matrix_has_ghost(void)
200 bool matrix_is_on(uint8_t row
, uint8_t col
)
202 return (matrix
[row
] & ((matrix_row_t
)1<<col
));
206 matrix_row_t
matrix_get_row(uint8_t row
)
211 void matrix_print(void)
213 print("\nr/c 01234567\n");
214 for (uint8_t row
= 0; row
< MATRIX_ROWS
; row
++) {
215 phex(row
); print(": ");
216 pbin_reverse(matrix_get_row(row
));
221 uint8_t matrix_key_count(void)
224 for (uint8_t i
= 0; i
< MATRIX_ROWS
; i
++) {
225 for (uint8_t j
= 0; j
< MATRIX_COLS
; j
++) {
226 if (matrix_is_on(i
, j
))