IIC发送和接收函数的printf函数改为条件编译，条件在main.h

inc/i2c.h

@@ -8,6 +8,7 @@
 #include "gd32e23x_it.h"
 #include "gd32e23x.h"
 #include "systick.h"
+#include "main.h"
 #include <stdbool.h>
 #include <string.h>
 #include <stdio.h>

inc/main.h

@@ -35,4 +35,6 @@ OF SUCH DAMAGE.
 #ifndef MAIN_H
 #define MAIN_H
 
+#define DEBUG_VERBOES
+
 #endif /* MAIN_H */