first version

src/include/utils.h

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+#ifndef __DAWN_UTILS_H
+#define __DAWN_UTILS_H
+
+#include <stdint.h>
+#include <ctype.h>
+
+#define MAC2STR(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]
+#define STR2MAC(a) &(a)[0], &(a)[1], &(a)[2], &(a)[3], &(a)[4], &(a)[5]
+
+#define MACSTR "%02X:%02X:%02X:%02X:%02X:%02X"
+
+/**
+ * Convert char to binary.
+ * @param ch
+ * @return
+ */
+int hex_to_bin(char ch);
+
+/**
+ * Convert mac adress string to mac adress.
+ * @param txt
+ * @param addr
+ * @return
+ */
+int hwaddr_aton(const char *txt, uint8_t *addr);
+
+/**
+ * Convert mac to use big characters.
+ * @param in
+ * @param out
+ * @return
+ */
+int convert_mac(char *in, char *out);
+
+/**
+ * Write mac to a file.
+ * @param path
+ * @param addr
+ */
+void write_mac_to_file(char *path, uint8_t addr[]);
+
+/**
+ * Check if a string is greater than another one.
+ * @param str
+ * @param str_2
+ * @return
+ */
+int string_is_greater(uint8_t *str, uint8_t *str_2);
+
+#endif