From 85f4c3ebb456c2d6feebf8934ab014436d7f8f17 Mon Sep 17 00:00:00 2001 From: Drashna Jaelre Date: Mon, 16 Dec 2019 08:31:59 -0800 Subject: [Core] Optimize matrix processing (#7621) Backport of tmk/tmk_keyboard@ad6059adc7039a54d1db75da783068654906a679 --- tmk_core/common/keyboard.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/tmk_core/common/keyboard.c b/tmk_core/common/keyboard.c index 125f00ccf7..af2b2fd48b 100644 --- a/tmk_core/common/keyboard.c +++ b/tmk_core/common/keyboard.c @@ -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) -- cgit v1.2.3