Refactoring Matrix scanning
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IBNobody
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508eddf8ba
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4c6960835c
173
quantum/matrix.c
173
quantum/matrix.c
@ -43,16 +43,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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# define ROW_SHIFTER ((uint32_t)1)
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#endif
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#if (MATRIX_ROWS <= 8)
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# define COL_SHIFTER ((uint8_t)1)
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#elif (MATRIX_ROWS <= 16)
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# define COL_SHIFTER ((uint16_t)1)
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#elif (MATRIX_ROWS <= 32)
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# define COL_SHIFTER ((uint32_t)1)
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#endif
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#ifdef MATRIX_MASKED
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extern const matrix_row_t matrix_mask[];
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#endif
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@ -70,6 +60,9 @@ static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
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/* matrix state(1:on, 0:off) */
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static matrix_row_t matrix[MATRIX_ROWS];
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static matrix_row_t matrix_raw[MATRIX_ROWS];
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#if DIODE_DIRECTION == COL2ROW
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static matrix_row_t matrix_debouncing[MATRIX_ROWS];
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#else // ROW2COL
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@ -79,13 +72,13 @@ static matrix_row_t matrix[MATRIX_ROWS];
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#if (DIODE_DIRECTION == COL2ROW)
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static void init_cols(void);
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static matrix_row_t read_cols(void);
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static void read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
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static void unselect_rows(void);
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static void select_row(uint8_t row);
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static void unselect_row(uint8_t row);
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#else // ROW2COL
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static void init_rows(void);
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static matrix_col_t read_rows(void);
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static void read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
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static void unselect_cols(void);
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static void unselect_col(uint8_t col);
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static void select_col(uint8_t col);
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@ -169,6 +162,7 @@ void matrix_init(void) {
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// initialize matrix state: all keys off
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for (uint8_t i=0; i < MATRIX_ROWS; i++) {
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matrix[i] = 0;
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matrix_raw[i] = 0;
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matrix_debouncing[i] = 0;
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}
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@ -178,6 +172,7 @@ void matrix_init(void) {
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// initialize matrix state: all keys off
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for (uint8_t i=0; i < MATRIX_ROWS; i++) {
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matrix_raw[i] = 0;
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matrix[i] = 0;
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}
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@ -196,67 +191,73 @@ uint8_t matrix_scan(void)
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#if (DIODE_DIRECTION == COL2ROW)
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// Set row, read cols
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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select_row(i);
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wait_us(30); // without this wait read unstable value.
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matrix_row_t current_row = read_cols();
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if (matrix_debouncing[i] != current_row) {
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matrix_debouncing[i] = current_row;
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if (debouncing) {
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debug("bounce!: "); debug_hex(debouncing); debug("\n");
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}
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debouncing = DEBOUNCING_DELAY;
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}
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unselect_row(i);
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for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
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read_cols_on_row(matrix, current_row);
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}
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if (debouncing) {
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if (--debouncing) {
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wait_ms(1);
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} else {
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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matrix[i] = matrix_debouncing[i];
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}
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}
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}
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// select_row(i);
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// wait_us(30); // without this wait read unstable value.
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// matrix_row_t current_row = read_cols();
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// if (matrix_debouncing[i] != current_row) {
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// matrix_debouncing[i] = current_row;
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// if (debouncing) {
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// debug("bounce!: "); debug_hex(debouncing); debug("\n");
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// }
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// debouncing = DEBOUNCING_DELAY;
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// }
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// unselect_row(i);
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// }
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// if (debouncing) {
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// if (--debouncing) {
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// wait_ms(1);
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// } else {
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// for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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// matrix[i] = matrix_debouncing[i];
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// }
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// }
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// }
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#else // ROW2COL
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// Set col, read rows
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for (uint8_t i = 0; i < MATRIX_COLS; i++) {
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select_col(i);
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wait_us(30); // without this wait read unstable value.
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matrix_col_t current_col = read_rows();
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if (matrix_transposed_debouncing[i] != current_col) {
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matrix_transposed_debouncing[i] = current_col;
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if (debouncing) {
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debug("bounce!: "); debug_hex(debouncing); debug("\n");
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}
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debouncing = DEBOUNCING_DELAY;
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}
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unselect_col(i);
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for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
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read_rows_on_col(matrix, current_col);
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}
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if (debouncing) {
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if (--debouncing) {
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wait_ms(1);
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} else {
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for (uint8_t i = 0; i < MATRIX_COLS; i++) {
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matrix_transposed[i] = matrix_transposed_debouncing[i];
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}
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}
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}
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// Untranspose matrix
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for (uint8_t y = 0; y < MATRIX_ROWS; y++) {
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matrix_row_t row = 0;
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for (uint8_t x = 0; x < MATRIX_COLS; x++) {
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row |= ((matrix_transposed[x] & (1<<y)) >> y) << x;
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}
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matrix[y] = row;
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}
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// for (uint8_t i = 0; i < MATRIX_COLS; i++) {
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// select_col(i);
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// wait_us(30); // without this wait read unstable value.
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// matrix_col_t current_col = read_rows();
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// if (matrix_transposed_debouncing[i] != current_col) {
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// matrix_transposed_debouncing[i] = current_col;
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// if (debouncing) {
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// debug("bounce!: "); debug_hex(debouncing); debug("\n");
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// }
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// debouncing = DEBOUNCING_DELAY;
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// }
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// unselect_col(i);
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// }
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// if (debouncing) {
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// if (--debouncing) {
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// wait_ms(1);
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// } else {
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// for (uint8_t i = 0; i < MATRIX_COLS; i++) {
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// matrix_transposed[i] = matrix_transposed_debouncing[i];
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// }
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// }
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// }
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// // Untranspose matrix
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// for (uint8_t y = 0; y < MATRIX_ROWS; y++) {
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// matrix_row_t row = 0;
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// for (uint8_t x = 0; x < MATRIX_COLS; x++) {
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// row |= ((matrix_transposed[x] & (1<<y)) >> y) << x;
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// }
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// matrix[y] = row;
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// }
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#endif
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@ -322,16 +323,25 @@ static void init_cols(void)
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}
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}
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static matrix_row_t read_cols(void)
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static void read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
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{
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matrix_row_t result = 0;
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// Clear data in matrix row
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current_matrix[current_row] = 0;
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for(uint8_t x = 0; x < MATRIX_COLS; x++) {
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uint8_t pin = col_pins[x];
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result |= (_SFR_IO8(pin >> 4) & _BV(pin & 0xF)) ? 0 : (ROW_SHIFTER << x);
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// Select row and wait for row selecton to stabilize
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select_row(current_row);
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wait_us(30);
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// For each col...
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for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
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// Select the col pin to read (active low)
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uint8_t pin = col_pins[col_index];
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uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
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// Populate the matrix row with the state of the col pin
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current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
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}
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return result;
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}
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static void select_row(uint8_t row)
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@ -368,16 +378,23 @@ static void init_rows(void)
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}
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}
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static matrix_col_t read_rows(void)
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static void read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
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{
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matrix_col_t result = 0;
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for(uint8_t x = 0; x < MATRIX_ROWS; x++) {
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uint8_t pin = row_pins[x];
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result |= (_SFR_IO8(pin >> 4) & _BV(pin & 0xF)) ? 0 : (COL_SHIFTER << x);
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// Select col and wait for col selecton to stabilize
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select_col(current_col);
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wait_us(30);
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// For each row...
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for(uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
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// Select the row pin to read (active low)
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uint8_t pin = row_pins[row_index];
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uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
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// Populate the matrix row with the state of the col pin
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current_matrix[row_index] &= pin_state ? ~(ROW_SHIFTER << current_col) : 0;
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}
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return result;
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}
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static void select_col(uint8_t col)
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@ -31,16 +31,6 @@ typedef uint32_t matrix_row_t;
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#error "MATRIX_COLS: invalid value"
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#endif
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#if (MATRIX_ROWS <= 8)
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typedef uint8_t matrix_col_t;
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#elif (MATRIX_ROWS <= 16)
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typedef uint16_t matrix_col_t;
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#elif (MATRIX_ROWS <= 32)
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typedef uint32_t matrix_col_t;
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#else
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#error "MATRIX_COLS: invalid value"
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#endif
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#define MATRIX_IS_ON(row, col) (matrix_get_row(row) && (1<<col))
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