util-hex

---

  void byte_to_hex( uint8_t * hex, uint8_t * byte, uint8_t len );
  void byte_to_hex_lowercase( uint8_t * hex, uint8_t * byte, uint8_t len );
  bool is_valid_hex( uint8_t * hex, uint8_t byteLen );
  bool hex_to_byte( uint8_t * byte, uint8_t * hex, uint8_t byteLen);

util-string

---

  // functions to get/set big-endian integer values
  inline void u16_to_bigendian( uint8_t * dst, uint16_t u16);
  inline void bigendian_to_u16( uint16_t * dst, uint8_t * src );
  inline void u24_to_bigendian( uint8_t * dst, uint32_t u24);
  inline void bigendian_to_u24( uint32_t * dst, uint8_t * src );
  inline void s24_to_bigendian( int8_t * dst, int32_t s24 );
  inline void bigendian_to_s24( int32_t * dst, uint8_t * src );
  inline void u32_to_bigendian( uint8_t * dst, uint32_t u32);
  inline void bigendian_to_u32( uint32_t * dst, uint8_t * src );

  int32_t str_to_s32( uint8_t * str );
  uint32_t str_to_u32( uint8_t * str );