diff --git a/config.h b/config.h
new file mode 100644
index 0000000..2b0893f
--- /dev/null
+++ b/config.h
@@ -0,0 +1,36 @@
+#ifndef _N_CONFIG_H_
+#define _N_CONFIG_H_
+
+#include "./g401302/src/G401_drv_hw_V01.h"
+#include "./sys_hw/drv_usart.h"
+
+#ifndef int8
+#define int8  signed char
+#endif
+
+#ifndef uint8
+#define uint8 unsigned char
+#endif
+
+#ifndef uint16
+#define uint16 unsigned short
+#endif
+
+#ifndef int16
+#define int16 signed short
+#endif
+
+#ifndef uint32
+#define uint32 unsigned int
+#endif
+
+#ifndef int32
+#define int32 signed int
+#endif
+
+#ifndef NULL
+#define NULL ((void *)0)
+#endif
+
+#endif
+