diff --git a/ptb3master.json b/ptb3master.json
index 92a03a4..583e6b7 100644
--- a/ptb3master.json
+++ b/ptb3master.json
@@ -10,6 +10,7 @@
     "peripherals": [
         {
             "type": "dio",
+            "edge_counter": true,
             "ports": [0],
             "board": "DIO_SMA",
             "hw_rev": "v1.1",