Let us start here, from square one. No, from Zero!

script/api/iidx.cpp

@@ -0,0 +1,46 @@
+#include "iidx.h"
+#include <cstring>
+#include "external/LuaBridge.h"
+#include "games/iidx/iidx.h"
+
+using namespace luabridge;
+
+namespace script::api::iidx {
+
+    // settings
+    static const size_t TICKER_SIZE = 9;
+
+    std::string ticker_get() {
+        std::lock_guard<std::mutex> lock(games::iidx::IIDX_LED_TICKER_LOCK);
+        return std::string(games::iidx::IIDXIO_LED_TICKER);
+    }
+
+    void ticker_set(const std::string &text) {
+
+        // lock
+        std::lock_guard<std::mutex> ticker_lock(games::iidx::IIDX_LED_TICKER_LOCK);
+
+        // set to read only
+        games::iidx::IIDXIO_LED_TICKER_READONLY = true;
+
+        // set led ticker
+        memset(games::iidx::IIDXIO_LED_TICKER, ' ', TICKER_SIZE);
+        for (size_t i = 0; i < TICKER_SIZE && i < text.size(); i++) {
+            games::iidx::IIDXIO_LED_TICKER[i] = text[i];
+        }
+    }
+
+    void ticker_reset() {
+        std::lock_guard<std::mutex> ticker_lock(games::iidx::IIDX_LED_TICKER_LOCK);
+        games::iidx::IIDXIO_LED_TICKER_READONLY = false;
+    }
+
+    void init(lua_State *L) {
+        getGlobalNamespace(L)
+        .beginNamespace("iidx")
+            .addFunction("ticker_get", ticker_get)
+            .addFunction("ticker_set", ticker_set)
+            .addFunction("ticker_reset", ticker_reset)
+        .endNamespace();
+    }
+}