diff --git a/inc/cpld.hpp b/inc/cpld.hpp
new file mode 100644
index 0000000..206f0c6
--- /dev/null
+++ b/inc/cpld.hpp
@@ -0,0 +1,18 @@
+
+#pragma once
+#include "config.h"
+
+#include <cstdint>
+#include <string>
+
+struct ButtonConfig;
+
+struct CpldInfo
+{
+    std::string registerName;
+    uint32_t i2cAddress;
+    uint32_t i2cBus;
+    int cpldMappedFd; // io fd mapped with the cpld
+};
+
+int configCpld(ButtonConfig& buttonCfg);