diff --git a/fw/fpmath.h b/fw/fpmath.h
index 927dace..3ae082b 100644
--- a/fw/fpmath.h
+++ b/fw/fpmath.h
@@ -4,6 +4,10 @@
 #include <stdint.h>
 #include <assert.h>
 
+/*
+ * Minimal Fixed-Point math library implementation
+ */
+
 // This library depends on sign extension
 static_assert(-4 >> 1 == -2, ">> doesn't do sign extension");
 
diff --git a/fw/lib_i2c.h b/fw/lib_i2c.h
index dd51640..c3bf8fd 100644
--- a/fw/lib_i2c.h
+++ b/fw/lib_i2c.h
@@ -1,10 +1,10 @@
-#ifndef _LIB_I2C_H
-#define _LIB_I2C_H
-
 // MIT License
 // Copyright (c) 2025 UniTheCat
 // Tested with Ch32X03x and CH32V30x
 
+#ifndef _LIB_I2C_H
+#define _LIB_I2C_H
+
 #include <ch32fun.h>
 
 
diff --git a/fw/sc7a20.c b/fw/sc7a20.c
index e2239cd..d787b95 100644
--- a/fw/sc7a20.c
+++ b/fw/sc7a20.c
@@ -1,3 +1,11 @@
+/*
+ * Register functions for the SC7A20 accellerometer
+ * Original Author:
+ *     Ralim
+ *     Created on: 18 Sep. 2020
+ *     https://github.com/Ralim/IronOS.git
+ */
+
 #include <ch32fun.h>
 #include "lib_i2c.h"
 
diff --git a/fw/sc7a20.h b/fw/sc7a20.h
index 75b9f88..533418b 100644
--- a/fw/sc7a20.h
+++ b/fw/sc7a20.h
@@ -1,8 +1,9 @@
 /*
- * SC7A20_defines.h
- *
- *  Created on: 18 Sep. 2020
- *      Author: Ralim
+ * Defines for the SC7A20 accellerometer
+ * Original Author:
+ *     Ralim
+ *     Created on: 18 Sep. 2020
+ *     https://github.com/Ralim/IronOS.git
  */
 
 #ifndef _SC7A20_H_