diff --git a/.gitmodules b/.gitmodules
index 2bcea77f..986c695c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -772,3 +772,6 @@
 [submodule "libraries/drivers/sht4x"]
 	path = libraries/drivers/sht4x
 	url = https://github.com/adafruit/Adafruit_CircuitPython_SHT4x.git
+[submodule "libraries/helpers/pioasm"]
+	path = libraries/helpers/pioasm
+	url = https://github.com/adafruit/Adafruit_CircuitPython_PIOASM.git
diff --git a/libraries/helpers/pioasm b/libraries/helpers/pioasm
new file mode 160000
index 00000000..25618d83
--- /dev/null
+++ b/libraries/helpers/pioasm
@@ -0,0 +1 @@
+Subproject commit 25618d8385618c3447b36a84ae08fdd1adf67c5d