1 files changed, 30 insertions, 9 deletions

diff --git a/keyboards/sixkeyboard/matrix.c b/keyboards/sixkeyboard/matrix.c
index ed1b70e28..860452ebd 100644
--- a/keyboards/sixkeyboard/matrix.c
+++ b/keyboards/sixkeyboard/matrix.c
@@ -34,9 +34,15 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "util.h"
 #include "matrix.h"
 #include "sixkeyboard.h"
+#include <string.h>
 
 /* matrix state(1:on, 0:off) */
 static matrix_row_t matrix[MATRIX_ROWS];
+static matrix_row_t matrix_stage[MATRIX_ROWS];
+static matrix_row_t matrix_debouncing[MATRIX_ROWS];
+
+static uint16_t debouncing_time;
+static bool debouncing = false;
 
 __attribute__ ((weak))
 void matrix_init_kb(void) {
@@ -78,14 +84,35 @@ void matrix_init(void)
     DDRD  &= ~(1<<6 | 1<<4 | 1<<1);
     PORTD |=  (1<<6 | 1<<4 | 1<<1);
 
-    matrix_init_kb();
+    for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+        matrix[i] = 0;
+        matrix_debouncing[i] = 0;
+        matrix_stage[i] = 0;
+    }
+
+    matrix_init_quantum();
 
 }
 
 uint8_t matrix_scan(void)
 {
-    matrix[0] = (PINC&(1<<7) ? 0 : (1<<0)) | (PINB&(1<<7) ? 0 : (1<<1)) | (PINB&(1<<5) ? 0 : (1<<2));
-    matrix[1] = (PIND&(1<<6) ? 0 : (1<<0)) | (PIND&(1<<1) ? 0 : (1<<1)) | (PIND&(1<<4) ? 0 : (1<<2));
+    matrix_stage[0] = (PINC&(1<<7) ? 0 : (1<<0)) | (PINB&(1<<7) ? 0 : (1<<1)) | (PINB&(1<<5) ? 0 : (1<<2));
+    matrix_stage[1] = (PIND&(1<<6) ? 0 : (1<<0)) | (PIND&(1<<1) ? 0 : (1<<1)) | (PIND&(1<<4) ? 0 : (1<<2));
+
+    if (memcmp(matrix_debouncing, matrix_stage, sizeof(matrix)) != 0) {
+        debouncing = true;
+        debouncing_time = timer_read();
+    }
+
+    matrix_debouncing[0] = matrix_stage[0];
+    matrix_debouncing[1] = matrix_stage[1];
+
+    if (debouncing && (timer_elapsed(debouncing_time) > 20)) {
+        for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+            matrix[i] = matrix_debouncing[i];
+        }
+        debouncing = false;
+    }
 
     matrix_scan_quantum();
 
@@ -111,12 +138,6 @@ matrix_row_t matrix_get_row(uint8_t row)
 
 void matrix_print(void)
 {
-    print("\nr/c 0123456789ABCDEF\n");
-    for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
-        phex(row); print(": ");
-        pbin_reverse16(matrix_get_row(row));
-        print("\n");
-    }
 }
 
 uint8_t matrix_key_count(void)