abstract class SerialTool {
  /// 转16进制转字符串
  static String bytesToString(List<int> intList) {
    return intList
        .map((intVal) => intVal.toRadixString(16).toUpperCase().padLeft(2, '0'))
        .join();
  }

  /// 转16进制转字符串
  static List<int> stringToBytes(String strCode) {
    List<int> bytes = [];
    for (int i = 0; i < strCode.length; i += 2) {
      String hexPair = strCode.substring(i, i + 2);
      int byteValue = int.parse(hexPair, radix: 16);
      bytes.add(byteValue);
    }
    return bytes;
  }

  /// 字符串转16进制不够补零
  static String? toHexPadded({
    required String str,
    int max = 32,
  }) {
    String hex =
        str.codeUnits.map((c) => c.toRadixString(16).padLeft(2, '0')).join();
    if (hex.length > max) {
      return null;
    }
    return hex.padRight(max, '0');
  }
}