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[Core] Optimize matrix processing (#7621) 

Backport of tmk/tmk_keyboard@ad6059adc7
This commit is contained in:
Drashna Jaelre 2019-12-16 08:31:59 -08:00 committed by Joel Challis
parent 853b99954e
commit 85f4c3ebb4
1 changed files with 5 additions and 4 deletions
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9
tmk_core/common/keyboard.c
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@ -297,13 +297,14 @@ void keyboard_task(void) {
}
#endif
if (debug_matrix) matrix_print();
for (uint8_t c = 0; c < MATRIX_COLS; c++) {
if (matrix_change & ((matrix_row_t)1 << c)) {
matrix_row_t col_mask = 1;
for (uint8_t c = 0; c < MATRIX_COLS; c++, col_mask <<= 1) {
if (matrix_change & col_mask) {
action_exec((keyevent_t){
.key = (keypos_t){.row = r, .col = c}, .pressed = (matrix_row & ((matrix_row_t)1 << c)), .time = (timer_read() | 1) /* time should not be 0 */
.key = (keypos_t){.row = r, .col = c}, .pressed = (matrix_row & col_mask), .time = (timer_read() | 1) /* time should not be 0 */
});
// record a processed key
matrix_prev[r] ^= ((matrix_row_t)1 << c);
matrix_prev[r] ^= col_mask;
#ifdef QMK_KEYS_PER_SCAN
// only jump out if we have processed "enough" keys.
if (++keys_processed >= QMK_KEYS_PER_SCAN)