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Use single memcmp to determine if matrix changed. (#13064)

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* Use memcmp to determine if matrix changed.

* Firmware size issues.

* Add documentation for the lack of need of MATRIX_ROW_PINS/MATRIX_COL_PINS, when overriding low-level matrix functions.
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Nick Brassel 2021-06-09 17:19:42 +10:00 • committed by GitHub
parent cbfa2dba25
commit f287597c19
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8 changed files with 131 additions and 79 deletions
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69
quantum/split_common/matrix.c
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@ -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"
@ -31,8 +32,12 @@ 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 pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
# endif // MATRIX_ROW_PINS
# ifdef MATRIX_COL_PINS
static pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
# endif // MATRIX_COL_PINS
#endif
/* matrix state(1:on, 0:off) */
@ -45,6 +50,9 @@ uint8_t thisHand, thatHand;
// user-defined overridable functions
__attribute__((weak)) void matrix_slave_scan_kb(void) { matrix_slave_scan_user(); }
__attribute__((weak)) void matrix_slave_scan_user(void) {}
__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 {
@ -72,7 +80,7 @@ __attribute__((weak)) void matrix_init_pins(void) {
}
}
__attribute__((weak)) bool matrix_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;
@ -83,16 +91,13 @@ __attribute__((weak)) bool matrix_read_cols_on_row(matrix_row_t current_matrix[]
}
}
// 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]); }
@ -111,7 +116,7 @@ __attribute__((weak)) void matrix_init_pins(void) {
}
}
__attribute__((weak)) bool matrix_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;
@ -132,15 +137,11 @@ __attribute__((weak)) bool matrix_read_cols_on_row(matrix_row_t current_matrix[]
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;
return true;
}
return false;
// Update the matrix
current_matrix[current_row] = current_row_value;
}
# elif (DIODE_DIRECTION == ROW2COL)
# elif (DIODE_DIRECTION == ROW2COL)
static void select_col(uint8_t col) { setPinOutput_writeLow(col_pins[col]); }
@ -159,45 +160,32 @@ __attribute__((weak)) void matrix_init_pins(void) {
}
}
__attribute__((weak)) bool matrix_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);
matrix_output_select_delay();
// For each row...
for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; 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) {
// 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
@ -288,20 +276,23 @@ bool matrix_post_scan(void) {
}
uint8_t matrix_scan(void) {
bool local_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 < ROWS_PER_HAND; current_row++) {
local_changed |= matrix_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++) {
local_changed |= matrix_read_rows_on_col(raw_matrix, current_col);
matrix_read_rows_on_col(curr_matrix, current_col);
}
#endif
bool local_changed = memcmp(raw_matrix, curr_matrix, sizeof(curr_matrix)) != 0;
if (local_changed) memcpy(raw_matrix, curr_matrix, sizeof(curr_matrix));
debounce(raw_matrix, matrix + thisHand, ROWS_PER_HAND, local_changed);
bool remote_changed = matrix_post_scan();