]>
git.gir.st - tmk_keyboard.git/blob - matrix.c
5 #include <util/delay.h>
12 static uint8_t _matrix0
[MATRIX_ROWS
];
13 static uint8_t _matrix1
[MATRIX_ROWS
];
15 static uint8_t read_col(void);
16 static void select_row(uint8_t row
);
19 void matrix_init(void)
21 // Column: input w/pullup
25 // Row: Hi-Z(unselected)
36 for (int i
=0; i
< MATRIX_ROWS
; i
++) {
41 prev_matrix
= _matrix1
;
44 uint8_t matrix_scan(void)
53 for (row
= 0; row
< MATRIX_ROWS
; row
++) {
55 _delay_us(30); // without this wait read unstable value.
63 static uint8_t read_col(void)
68 static void select_row(uint8_t row
)