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-rw-r--r--quantum/debounce.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/quantum/debounce.c b/quantum/debounce.c
new file mode 100644
index 000000000..929023ab2
--- /dev/null
+++ b/quantum/debounce.c
@@ -0,0 +1,52 @@
+
+#include "matrix.h"
+#include "timer.h"
+#include "quantum.h"
+
+#ifndef DEBOUNCING_DELAY
+# define DEBOUNCING_DELAY 5
+#endif
+
+void debounce_init(uint8_t num_rows) {
+}
+
+#if DEBOUNCING_DELAY > 0
+
+static bool debouncing = false;
+
+void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed) {
+ static uint16_t debouncing_time;
+
+ if (changed) {
+ debouncing = true;
+ debouncing_time = timer_read();
+ }
+
+ if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
+ for (uint8_t i = 0; i < num_rows; i++) {
+ cooked[i] = raw[i];
+ }
+ debouncing = false;
+ }
+}
+
+bool debounce_active(void) {
+ return debouncing;
+}
+
+#else
+
+// no debounce
+void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed) {
+ if (changed)
+ {
+ for (uint8_t i = 0; i < num_rows; i++) {
+ cooked[i] = raw[i];
+ }
+ }
+}
+
+bool debounce_active(void) {
+ return false;
+}
+#endif