Make debounce() signal changes in the cooked matrix as return value (#17554)

1 files changed, 8 insertions, 3 deletions

diff --git a/quantum/debounce/sym_eager_pr.c b/quantum/debounce/sym_eager_pr.c
index 29b0cabefb..aad5ca351b 100644
--- a/quantum/debounce/sym_eager_pr.c
+++ b/quantum/debounce/sym_eager_pr.c
@@ -48,6 +48,7 @@ static bool matrix_need_update;
 static debounce_counter_t *debounce_counters;
 static fast_timer_t        last_time;
 static bool                counters_need_update;
+static bool                cooked_changed;
 
 #    define DEBOUNCE_ELAPSED 0
 
@@ -67,8 +68,9 @@ void debounce_free(void) {
     debounce_counters = NULL;
 }
 
-void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed) {
+bool debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed) {
     bool updated_last = false;
+    cooked_changed    = false;
 
     if (counters_need_update) {
         fast_timer_t now          = timer_read_fast();
@@ -92,6 +94,8 @@ void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool
 
         transfer_matrix_values(raw, cooked, num_rows);
     }
+
+    return cooked_changed;
 }
 
 // If the current time is > debounce counter, set the counter to enable input.
@@ -123,8 +127,9 @@ static void transfer_matrix_values(matrix_row_t raw[], matrix_row_t cooked[], ui
         // determine new value basd on debounce pointer + raw value
         if (existing_row != raw_row) {
             if (*debounce_pointer == DEBOUNCE_ELAPSED) {
-                *debounce_pointer    = DEBOUNCE;
-                cooked[row]          = raw_row;
+                *debounce_pointer = DEBOUNCE;
+                cooked[row]       = raw_row;
+                cooked_changed |= cooked[row] ^ raw[row];
                 counters_need_update = true;
             }
         }