diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..c7477c3
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "Drivers/RTT"]
+	path = Drivers/RTT
+	url = https://github.com/SEGGERMicro/RTT.git