diff --git a/.gitmodules b/.gitmodules
index c9c0110..36f1b26 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -11,3 +11,6 @@
 	path = src/freertos
 	url = https://github.com/xX7/freertos-bao-hartstone.git
 	branch = hartstone
+[submodule "src/freertos-neneco-hartstone"]
+	path = src/freertos-neneco-hartstone
+	url = https://github.com/xX7/freertos-neneco-hartstone.git
diff --git a/src/freertos-neneco-hartstone b/src/freertos-neneco-hartstone
new file mode 160000
index 0000000..d44c410
--- /dev/null
+++ b/src/freertos-neneco-hartstone
@@ -0,0 +1 @@
+Subproject commit d44c41058785a35d677f0b12b99d92a8cba391ce