tmk
11 년 전
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keyboard/hid_liber/matrix.c
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| static uint8_t debouncing = DEBOUNCE; | static uint8_t debouncing = DEBOUNCE; | ||||
| // bit array of key state(1:on, 0:off) | // 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 | #define _DDRA (uint8_t *const)&DDRA | ||||
| setup_leds(); | setup_leds(); | ||||
| // initialize matrix state: all keys off | // 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) | 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 | for (uint8_t col = 0; col < MATRIX_COLS; col++) { // 0-7 | ||||
| pull_column(col); // output hi on theline | pull_column(col); // output hi on theline | ||||
| _delay_us(5); // without this wait it won't read stable value. | _delay_us(5); // without this wait it won't read stable value. | ||||
| for (uint8_t row = 0; row < MATRIX_ROWS; row++) { // 0-17 | 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]; | bool curr_bit = *row_pin[row] & row_bit[row]; | ||||
| if (prev_bit != curr_bit) { | if (prev_bit != curr_bit) { | ||||
| matrix[row] ^= (1<<col); | |||||
| matrix_debouncing[row] ^= ((matrix_row_t)1<<col); | |||||
| if (debouncing) { | if (debouncing) { | ||||
| debug("bounce!: "); debug_hex(debouncing); print("\n"); | |||||
| dprintf("bounce!: %02X\n", debouncing); | |||||
| } | } | ||||
| debouncing = DEBOUNCE; | debouncing = DEBOUNCE; | ||||
| } | } | ||||
| } | } | ||||
| if (debouncing) { | 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; | return 1; | ||||
| inline | inline | ||||
| bool matrix_is_on(uint8_t row, uint8_t col) | 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 | inline | ||||
| matrix_row_t matrix_get_row(uint8_t row) | matrix_row_t matrix_get_row(uint8_t row) | ||||
| { | { | ||||
| return matrix_debounced[row]; | |||||
| return matrix[row]; | |||||
| } | } | ||||
| void matrix_print(void) | void matrix_print(void) |
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