diff --git a/.gitmodules b/.gitmodules
index e9cc936..525c5af 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "boards"]
 	path = boards
 	url = https://github.com/rzeldent/platformio-espressif32-sunton.git
+	branch = feature/iodefs
diff --git a/boards b/boards
index 03a28ef..818309e 160000
--- a/boards
+++ b/boards
@@ -1 +1 @@
-Subproject commit 03a28efc97b4c631bdb854a8d6634d9b2da84052
+Subproject commit 818309e7dd741ece46cc99631a1e9537bb017fff
diff --git a/src/main.cpp b/src/main.cpp
index 9ccd1a4..d01772b 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -76,7 +76,7 @@ void loop()
 #endif
 
 #ifdef BOARD_HAS_CDS
-        auto cdr = analogReadMilliVolts(CDS_GPIO);
+        auto cdr = analogReadMilliVolts(CDS);
         sprintf(text_buffer, "%d", cdr);
         lv_label_set_text(ui_lblCdrValue, text_buffer);
 #endif