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@ -37,27 +37,20 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef DEBOUNCE
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# define DEBOUNCE 0
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# define DEBOUNCE 5
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#endif
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static uint8_t debouncing = DEBOUNCE;
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// matrix state buffer(1:on, 0:off)
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#if (MATRIX_COLS <= 8)
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static uint8_t *matrix;
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static uint8_t *matrix_prev;
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static uint8_t _matrix0[MATRIX_ROWS];
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static uint8_t _matrix1[MATRIX_ROWS];
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#else
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static uint16_t *matrix;
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static uint16_t *matrix_prev;
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static uint16_t _matrix0[MATRIX_ROWS];
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static uint16_t _matrix1[MATRIX_ROWS];
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#endif
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static matrix_row_t *matrix;
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static matrix_row_t *matrix_debouncing;
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static matrix_row_t matrix0[MATRIX_ROWS];
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static matrix_row_t matrix1[MATRIX_ROWS];
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#ifdef MATRIX_HAS_GHOST
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static bool matrix_has_ghost_in_row(uint8_t row);
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#endif
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static uint8_t read_col(void);
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static matrix_row_t read_col(void);
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static void unselect_rows(void);
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static void select_row(uint8_t row);
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@ -83,26 +76,22 @@ void matrix_init(void)
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PORTB = 0xFF;
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// initialize matrix state: all keys off
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for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
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for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0x00;
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matrix = _matrix0;
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matrix_prev = _matrix1;
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for (uint8_t i=0; i < MATRIX_ROWS; i++) {
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matrix0[i] = 0;
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matrix1[i] = 0;
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}
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matrix = matrix0;
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matrix_debouncing = matrix1;
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}
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uint8_t matrix_scan(void)
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{
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if (!debouncing) {
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uint8_t *tmp = matrix_prev;
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matrix_prev = matrix;
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matrix = tmp;
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}
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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unselect_rows();
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select_row(i);
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_delay_us(30); // without this wait read unstable value.
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if (matrix[i] != (uint8_t)~read_col()) {
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matrix[i] = (uint8_t)~read_col();
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if (matrix[i] != read_col()) {
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matrix[i] = read_col();
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if (debouncing) {
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debug("bounce!: "); debug_hex(debouncing); print("\n");
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}
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@ -112,7 +101,14 @@ uint8_t matrix_scan(void)
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unselect_rows();
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if (debouncing) {
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debouncing--;
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if (--debouncing) {
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_delay_ms(1);
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} else {
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matrix_row_t *tmp = matrix;
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matrix = matrix_debouncing;
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matrix_debouncing = tmp;
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}
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}
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return 1;
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@ -121,24 +117,7 @@ uint8_t matrix_scan(void)
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bool matrix_is_modified(void)
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{
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if (debouncing) return false;
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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if (matrix[i] != matrix_prev[i]) {
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return true;
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}
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}
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return false;
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}
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inline
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bool matrix_has_ghost(void)
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{
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#ifdef MATRIX_HAS_GHOST
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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if (matrix_has_ghost_in_row(i))
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return true;
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}
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#endif
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return false;
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}
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inline
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@ -148,11 +127,7 @@ bool matrix_is_on(uint8_t row, uint8_t col)
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}
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inline
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#if (MATRIX_COLS <= 8)
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uint8_t matrix_get_row(uint8_t row)
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#else
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uint16_t matrix_get_row(uint8_t row)
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#endif
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matrix_row_t matrix_get_row(uint8_t row)
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{
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return matrix[row];
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}
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@ -207,9 +182,9 @@ static bool matrix_has_ghost_in_row(uint8_t row)
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#endif
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inline
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static uint8_t read_col(void)
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static matrix_row_t read_col(void)
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{
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return PINB;
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return ~PINB;
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}
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inline
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