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-rw-r--r--quantum/matrix.c143
1 files changed, 87 insertions, 56 deletions
diff --git a/quantum/matrix.c b/quantum/matrix.c
index 34d6af2e6d..566d9ff340 100644
--- a/quantum/matrix.c
+++ b/quantum/matrix.c
@@ -16,6 +16,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <stdbool.h>
+#include <string.h>
#include "util.h"
#include "matrix.h"
#include "debounce.h"
@@ -24,14 +25,23 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#ifdef DIRECT_PINS
static pin_t direct_pins[MATRIX_ROWS][MATRIX_COLS] = DIRECT_PINS;
#elif (DIODE_DIRECTION == ROW2COL) || (DIODE_DIRECTION == COL2ROW)
+# ifdef MATRIX_ROW_PINS
static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
+# endif // MATRIX_ROW_PINS
+# ifdef MATRIX_COL_PINS
static const pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
+# endif // MATRIX_COL_PINS
#endif
/* matrix state(1:on, 0:off) */
extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
extern matrix_row_t matrix[MATRIX_ROWS]; // debounced values
+// user-defined overridable functions
+__attribute__((weak)) void matrix_init_pins(void);
+__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
+__attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
+
static inline void setPinOutput_writeLow(pin_t pin) {
ATOMIC_BLOCK_FORCEON {
setPinOutput(pin);
@@ -43,11 +53,19 @@ static inline void setPinInputHigh_atomic(pin_t pin) {
ATOMIC_BLOCK_FORCEON { setPinInputHigh(pin); }
}
+static inline uint8_t readMatrixPin(pin_t pin) {
+ if (pin != NO_PIN) {
+ return readPin(pin);
+ } else {
+ return 1;
+ }
+}
+
// matrix code
#ifdef DIRECT_PINS
-static void init_pins(void) {
+__attribute__((weak)) void matrix_init_pins(void) {
for (int row = 0; row < MATRIX_ROWS; row++) {
for (int col = 0; col < MATRIX_COLS; col++) {
pin_t pin = direct_pins[row][col];
@@ -58,7 +76,7 @@ static void init_pins(void) {
}
}
-static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
+__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
// Start with a clear matrix row
matrix_row_t current_row_value = 0;
@@ -69,46 +87,57 @@ static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
}
}
- // If the row has changed, store the row and return the changed flag.
- if (current_matrix[current_row] != current_row_value) {
- current_matrix[current_row] = current_row_value;
- return true;
- }
- return false;
+ // Update the matrix
+ current_matrix[current_row] = current_row_value;
}
#elif defined(DIODE_DIRECTION)
-# if (DIODE_DIRECTION == COL2ROW)
+# if defined(MATRIX_ROW_PINS) && defined(MATRIX_COL_PINS)
+# if (DIODE_DIRECTION == COL2ROW)
-static void select_row(uint8_t row) { setPinOutput_writeLow(row_pins[row]); }
+static bool select_row(uint8_t row) {
+ pin_t pin = row_pins[row];
+ if (pin != NO_PIN) {
+ setPinOutput_writeLow(pin);
+ return true;
+ }
+ return false;
+}
-static void unselect_row(uint8_t row) { setPinInputHigh_atomic(row_pins[row]); }
+static void unselect_row(uint8_t row) {
+ pin_t pin = row_pins[row];
+ if (pin != NO_PIN) {
+ setPinInputHigh_atomic(pin);
+ }
+}
static void unselect_rows(void) {
for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
- setPinInputHigh_atomic(row_pins[x]);
+ unselect_row(x);
}
}
-static void init_pins(void) {
+__attribute__((weak)) void matrix_init_pins(void) {
unselect_rows();
for (uint8_t x = 0; x < MATRIX_COLS; x++) {
- setPinInputHigh_atomic(col_pins[x]);
+ if (col_pins[x] != NO_PIN) {
+ setPinInputHigh_atomic(col_pins[x]);
+ }
}
}
-static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
+__attribute__((weak)) void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
// Start with a clear matrix row
matrix_row_t current_row_value = 0;
- // Select row
- select_row(current_row);
+ if (!select_row(current_row)) { // Select row
+ return; // skip NO_PIN row
+ }
matrix_output_select_delay();
// For each col...
for (uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
- // Select the col pin to read (active low)
- uint8_t pin_state = readPin(col_pins[col_index]);
+ uint8_t pin_state = readMatrixPin(col_pins[col_index]);
// Populate the matrix row with the state of the col pin
current_row_value |= pin_state ? 0 : (MATRIX_ROW_SHIFTER << col_index);
@@ -118,79 +147,78 @@ static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
unselect_row(current_row);
matrix_output_unselect_delay(); // wait for all Col signals to go HIGH
- // If the row has changed, store the row and return the changed flag.
- if (current_matrix[current_row] != current_row_value) {
- current_matrix[current_row] = current_row_value;
+ // Update the matrix
+ current_matrix[current_row] = current_row_value;
+}
+
+# elif (DIODE_DIRECTION == ROW2COL)
+
+static bool select_col(uint8_t col) {
+ pin_t pin = col_pins[col];
+ if (pin != NO_PIN) {
+ setPinOutput_writeLow(pin);
return true;
}
return false;
}
-# elif (DIODE_DIRECTION == ROW2COL)
-
-static void select_col(uint8_t col) { setPinOutput_writeLow(col_pins[col]); }
-
-static void unselect_col(uint8_t col) { setPinInputHigh_atomic(col_pins[col]); }
+static void unselect_col(uint8_t col) {
+ pin_t pin = col_pins[col];
+ if (pin != NO_PIN) {
+ setPinInputHigh_atomic(pin);
+ }
+}
static void unselect_cols(void) {
for (uint8_t x = 0; x < MATRIX_COLS; x++) {
- setPinInputHigh_atomic(col_pins[x]);
+ unselect_col(x);
}
}
-static void init_pins(void) {
+__attribute__((weak)) void matrix_init_pins(void) {
unselect_cols();
for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
- setPinInputHigh_atomic(row_pins[x]);
+ if (row_pins[x] != NO_PIN) {
+ setPinInputHigh_atomic(row_pins[x]);
+ }
}
}
-static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
- bool matrix_changed = false;
-
+__attribute__((weak)) void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
// Select col
- select_col(current_col);
+ if (!select_col(current_col)) { // select col
+ return; // skip NO_PIN col
+ }
matrix_output_select_delay();
// For each row...
for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
- // Store last value of row prior to reading
- matrix_row_t last_row_value = current_matrix[row_index];
- matrix_row_t current_row_value = last_row_value;
-
// Check row pin state
- if (readPin(row_pins[row_index]) == 0) {
+ if (readMatrixPin(row_pins[row_index]) == 0) {
// Pin LO, set col bit
- current_row_value |= (MATRIX_ROW_SHIFTER << current_col);
+ current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
} else {
// Pin HI, clear col bit
- current_row_value &= ~(MATRIX_ROW_SHIFTER << current_col);
- }
-
- // Determine if the matrix changed state
- if ((last_row_value != current_row_value)) {
- matrix_changed |= true;
- current_matrix[row_index] = current_row_value;
+ current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
}
}
// Unselect col
unselect_col(current_col);
matrix_output_unselect_delay(); // wait for all Row signals to go HIGH
-
- return matrix_changed;
}
-# else
-# error DIODE_DIRECTION must be one of COL2ROW or ROW2COL!
-# endif
+# else
+# error DIODE_DIRECTION must be one of COL2ROW or ROW2COL!
+# endif
+# endif // defined(MATRIX_ROW_PINS) && defined(MATRIX_COL_PINS)
#else
# error DIODE_DIRECTION is not defined!
#endif
void matrix_init(void) {
// initialize key pins
- init_pins();
+ matrix_init_pins();
// initialize matrix state: all keys off
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
@@ -204,20 +232,23 @@ void matrix_init(void) {
}
uint8_t matrix_scan(void) {
- bool changed = false;
+ matrix_row_t curr_matrix[MATRIX_ROWS] = {0};
#if defined(DIRECT_PINS) || (DIODE_DIRECTION == COL2ROW)
// Set row, read cols
for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
- changed |= read_cols_on_row(raw_matrix, current_row);
+ matrix_read_cols_on_row(curr_matrix, current_row);
}
#elif (DIODE_DIRECTION == ROW2COL)
// Set col, read rows
for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
- changed |= read_rows_on_col(raw_matrix, current_col);
+ matrix_read_rows_on_col(curr_matrix, current_col);
}
#endif
+ bool changed = memcmp(raw_matrix, curr_matrix, sizeof(curr_matrix)) != 0;
+ if (changed) memcpy(raw_matrix, curr_matrix, sizeof(curr_matrix));
+
debounce(raw_matrix, matrix, MATRIX_ROWS, changed);
matrix_scan_quantum();