tmk
11 years ago
1 changed files with 18 additions and 21 deletions
+ 18
- 21
keyboard/hid_liber/matrix.c
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| @@ -24,10 +24,8 @@ | |||
| static uint8_t debouncing = DEBOUNCE; | |||
| // bit array of key state(1:on, 0:off) | |||
| static matrix_row_t *matrix; | |||
| static matrix_row_t *matrix_debounced; | |||
| static matrix_row_t _matrix0[MATRIX_ROWS]; | |||
| static matrix_row_t _matrix1[MATRIX_ROWS]; | |||
| static matrix_row_t matrix[MATRIX_ROWS]; | |||
| static matrix_row_t matrix_debouncing[MATRIX_ROWS]; | |||
| #define _DDRA (uint8_t *const)&DDRA | |||
| @@ -148,30 +146,24 @@ void matrix_init(void) | |||
| setup_leds(); | |||
| // initialize matrix state: all keys off | |||
| for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00; | |||
| for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0x00; | |||
| matrix = _matrix0; | |||
| matrix_debounced = _matrix1; | |||
| for (uint8_t i=0; i < MATRIX_ROWS; i++) { | |||
| matrix[i] = 0; | |||
| matrix_debouncing[i] = 0; | |||
| } | |||
| } | |||
| uint8_t matrix_scan(void) | |||
| { | |||
| if (!debouncing) { | |||
| uint8_t *tmp = matrix_debounced; | |||
| matrix_debounced = matrix; | |||
| matrix = tmp; | |||
| } | |||
| for (uint8_t col = 0; col < MATRIX_COLS; col++) { // 0-7 | |||
| pull_column(col); // output hi on theline | |||
| _delay_us(5); // without this wait it won't read stable value. | |||
| for (uint8_t row = 0; row < MATRIX_ROWS; row++) { // 0-17 | |||
| bool prev_bit = matrix[row] & (1<<col); | |||
| bool prev_bit = matrix_debouncing[row] & (1<<col); | |||
| bool curr_bit = *row_pin[row] & row_bit[row]; | |||
| if (prev_bit != curr_bit) { | |||
| matrix[row] ^= (1<<col); | |||
| matrix_debouncing[row] ^= ((matrix_row_t)1<<col); | |||
| if (debouncing) { | |||
| debug("bounce!: "); debug_hex(debouncing); print("\n"); | |||
| dprintf("bounce!: %02X\n", debouncing); | |||
| } | |||
| debouncing = DEBOUNCE; | |||
| } | |||
| @@ -180,8 +172,13 @@ uint8_t matrix_scan(void) | |||
| } | |||
| if (debouncing) { | |||
| _delay_ms(1); | |||
| debouncing--; | |||
| if (--debouncing) { | |||
| _delay_ms(1); | |||
| } else { | |||
| for (uint8_t i = 0; i < MATRIX_ROWS; i++) { | |||
| matrix[i] = matrix_debouncing[i]; | |||
| } | |||
| } | |||
| } | |||
| return 1; | |||
| @@ -202,13 +199,13 @@ bool matrix_has_ghost(void) | |||
| inline | |||
| bool matrix_is_on(uint8_t row, uint8_t col) | |||
| { | |||
| return (matrix_debounced[row] & (1<<col)); | |||
| return (matrix[row] & ((matrix_row_t)1<<col)); | |||
| } | |||
| inline | |||
| matrix_row_t matrix_get_row(uint8_t row) | |||
| { | |||
| return matrix_debounced[row]; | |||
| return matrix[row]; | |||
| } | |||
| void matrix_print(void) | |||
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