diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 570ca9b..157f2fc 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,10 +1,10 @@
-repos:
-    - repo: local
-      hooks:
-        - id: clang_restage
-          name: Restage formatted files
-          entry: clang_restage
-          language: system
-          pass_filenames: false
-          always_run: true
+repos:
+    - repo: local
+      hooks:
+        - id: clang_restage
+          name: Restage formatted files
+          entry: clang_restage
+          language: system
+          pass_filenames: false
+          always_run: true
           stages: [pre-commit]
\ No newline at end of file
diff --git a/middleware/simple_ema.c b/middleware/simple_ema.c
new file mode 100644
index 0000000..567b107
--- /dev/null
+++ b/middleware/simple_ema.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+#include "simple_ema.h"
+
+void ema_filter(float current_value, float *previous_ema, float alpha)
+{
+	*previous_ema =
+		(alpha * current_value) + ((1 - alpha) * (*previous_ema));
+}
diff --git a/middleware/simple_ema.h b/middleware/simple_ema.h
new file mode 100644
index 0000000..a70cc7a
--- /dev/null
+++ b/middleware/simple_ema.h
@@ -0,0 +1,7 @@
+#ifndef SIMPLE_EMA
+#define SIMPLE_EMA
+
+// Exponential Moving Average Lowpass Filter
+void ema_filter(float current_value, float *previous_ema, float alpha);
+
+#endif /* SIMPLE_EMA */
\ No newline at end of file