diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..f769180
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,6 @@
+[submodule "libopencm3"]
+	path = libopencm3
+	url = ./libopencm3
+[submodule "libopencm3-tests"]
+	path = libopencm3-tests
+	url = ./libopencm3-tests/
diff --git a/libopencm3 b/libopencm3
new file mode 120000
index 0000000..b8131ca
--- /dev/null
+++ b/libopencm3
@@ -0,0 +1 @@
+/home/user/resource/libopencm3
\ No newline at end of file