diff --git a/.gitmodules b/.gitmodules
index 0228bdd..aa278b5 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,3 +10,6 @@
 [submodule "tmtc/tmtccmd"]
 	path = tmtc/tmtccmd
 	url = https://github.com/spacefisch/tmtccmd.git
+[submodule "cmake/stm32-cmake"]
+	path = cmake/stm32-cmake
+	url = https://github.com/spacefisch/stm32-cmake.git
diff --git a/cmake/stm32-cmake b/cmake/stm32-cmake
new file mode 160000
index 0000000..89c68c6
--- /dev/null
+++ b/cmake/stm32-cmake
@@ -0,0 +1 @@
+Subproject commit 89c68c69a17435035a4a48712936e06118bed3fb