adding comment

Author: leonardobsi

mdb-master-esp32/main/mdb-master-esp32.c

@@ -1,3 +1,10 @@
+/*
+ * mdb-master-esp32.c - Vending machine controller
+ *
+ * Written by Leonardo Soares <leonardobsi@gmail.com>
+ *
+ */
+
 #include <stdio.h>
 #include <math.h>
 

mdb-slave-esp32s3/main/mdb-slave-esp32s3.c

@@ -1,3 +1,10 @@
+/*
+ * mdb-slave-esp32.c - Vending machine peripheral
+ *
+ * Written by Leonardo Soares <leonardobsi@gmail.com>
+ *
+ */
+
 #include <stdio.h>
 #include <string.h>
 #include <math.h>