feat(ex04)

ex04/include/lib/mystd.h

@@ -0,0 +1,27 @@
+#ifndef MYSTDINT_H
+#define MYSTDINT_H
+
+#include <avr/io.h>
+
+typedef unsigned char uint8_t;
+typedef signed char	  int8_t;
+
+typedef uint8_t bool;
+
+#define true	(1)
+#define false	(0)
+
+#define BV(bit) (1 << bit)
+
+#ifndef NULL
+#	define NULL ((void*)0)
+#endif
+
+typedef bool t_error;
+
+#define ERROR	 true
+#define NO_ERROR false
+
+#define ERR_RET(expr) if (expr) return ERROR
+
+#endif /* MYSTDINT_H */