Question

我正在研究如何通过TCP从Linux / PHP直接连接到AnViz生物识别设备（TC550，它使用TC400.dll方法），然而我设法得到一些字符串来读取设备，我很难弄清楚每个代码的最后2个字节上出现的校验和，以便将我自己的指令发送到设备。

工作代码的示例可能是：

      function get_device_clock(){
      if(!$this->ip) return;
      if(!$this->open_socket()) return;
      $bytes = "A5";
      $bytes .= $this->fill_hex($this->id,8);
      $bytes .= "380000C4B8";

      $o = $this->comm($bytes);
      if(!trim($o)) return;
      $split = array();
      for($l = 0; $l < strlen($o); $l+=2){
          $split[] = substr($o,$l,2);
      }
      $year = hexdec($split[9]);
      if($year < 10) $year = "0" . $year;
      $year = "20$year";
      $month = hexdec($split[10]);
      if($month < 10) $month = "0$month";
      $day = hexdec($split[11]);
      if($day < 10) $day = "0$day";
      $hour = hexdec($split[12]);
      if($hour < 10) $hour = "0$hour";
      $min = hexdec($split[13]);
      if($min < 10) $min = "0$min";
      $sec = hexdec($split[14]);
      if($sec < 10) $sec = "0$sec";
      fclose($this->socket);
      return "$year-$month-$day $hour:$min:$sec\r\n";
  }

这将发送A5 00 00 05 38 00 00 C4 B8到端口5010的设备，使其回复时间和日期。

因为这可以实现实时：

A5 00 00 00 05 33 00 0F FF FF FF FF 01 FF FF FF FF FF FF FF FF FF 4E 37

这将列出最后的条目：

A5 00 00 00 05 40 00 02 01 19 FA FA

A5 00 00 00 06 3C 00 00 68 FE

A5 00 00 00 05 3C 00 00 A5 DB

现在问题是，最后2个字节，第一个例子是C4 B8，第二个是4E 37，第三个是FA FA，68 FE和A5 DB，ID从5变为6，接缝是某种校验和。我尝试了常见算法的所有变种，甚至使用了Fsum Frontend，所有字节顺序变种到目前为止都没有成功。

在较长的说明中似乎也有一些差异，例如：

<00> a5 00 00 00 05 73 00 29 01 00 00 00 17 ff ff ff 00 12 d6 93 00 58 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 40 6e 57

<00> a5 00 00 00 05 73 00 29 01 00 00 00 00 01 10 00 01 3e eb 18 08 00 54 00 65 00 73 00 74 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 50 6f 54

在这种情况下，校验和似乎是40 6E 57和50 6F 54

注意：请求接缝由以下组成：

A5 + 4字节器件串行号+ 1字节指令代码+可变长度内容+ 16/24位校验和

您可以在SDK BIO-OFFICE

获取生成此代码的SDK，tc400.dll

任何帮助解决这个问题将不胜感激。 TY提前。

* 更新 - 感谢Anviz支持小组*

工作代码：

<?php 
 $crc_table = [
      0x0000,0x1189,0x2312,0x329B,0x4624,0x57AD,0x6536,0x74BF,0x8C48,0x9DC1,0xAF5A,0xBED3,0xCA6C,0xDBE5,0xE97E,0xF8F7,
    0x1081,0x0108,0x3393,0x221A,0x56A5,0x472C,0x75B7,0x643E,0x9CC9,0x8D40,0xBFDB,0xAE52,0xDAED,0xCB64,0xF9FF,0xE876,
    0x2102,0x308B,0x0210,0x1399,0x6726,0x76AF,0x4434,0x55BD,0xAD4A,0xBCC3,0x8E58,0x9FD1,0xEB6E,0xFAE7,0xC87C,0xD9F5,
    0x3183,0x200A,0x1291,0x0318,0x77A7,0x662E,0x54B5,0x453C,0xBDCB,0xAC42,0x9ED9,0x8F50,0xFBEF,0xEA66,0xD8FD,0xC974,
    0x4204,0x538D,0x6116,0x709F,0x0420,0x15A9,0x2732,0x36BB,0xCE4C,0xDFC5,0xED5E,0xFCD7,0x8868,0x99E1,0xAB7A,0xBAF3,
    0x5285,0x430C,0x7197,0x601E,0x14A1,0x0528,0x37B3,0x263A,0xDECD,0xCF44,0xFDDF,0xEC56,0x98E9,0x8960,0xBBFB,0xAA72,
    0x6306,0x728F,0x4014,0x519D,0x2522,0x34AB,0x0630,0x17B9,0xEF4E,0xFEC7,0xCC5C,0xDDD5,0xA96A,0xB8E3,0x8A78,0x9BF1,
    0x7387,0x620E,0x5095,0x411C,0x35A3,0x242A,0x16B1,0x0738,0xFFCF,0xEE46,0xDCDD,0xCD54,0xB9EB,0xA862,0x9AF9,0x8B70,
    0x8408,0x9581,0xA71A,0xB693,0xC22C,0xD3A5,0xE13E,0xF0B7,0x0840,0x19C9,0x2B52,0x3ADB,0x4E64,0x5FED,0x6D76,0x7CFF,
    0x9489,0x8500,0xB79B,0xA612,0xD2AD,0xC324,0xF1BF,0xE036,0x18C1,0x0948,0x3BD3,0x2A5A,0x5EE5,0x4F6C,0x7DF7,0x6C7E,
    0xA50A,0xB483,0x8618,0x9791,0xE32E,0xF2A7,0xC03C,0xD1B5,0x2942,0x38CB,0x0A50,0x1BD9,0x6F66,0x7EEF,0x4C74,0x5DFD,
    0xB58B,0xA402,0x9699,0x8710,0xF3AF,0xE226,0xD0BD,0xC134,0x39C3,0x284A,0x1AD1,0x0B58,0x7FE7,0x6E6E,0x5CF5,0x4D7C,
    0xC60C,0xD785,0xE51E,0xF497,0x8028,0x91A1,0xA33A,0xB2B3,0x4A44,0x5BCD,0x6956,0x78DF,0x0C60,0x1DE9,0x2F72,0x3EFB,
    0xD68D,0xC704,0xF59F,0xE416,0x90A9,0x8120,0xB3BB,0xA232,0x5AC5,0x4B4C,0x79D7,0x685E,0x1CE1,0x0D68,0x3FF3,0x2E7A,
    0xE70E,0xF687,0xC41C,0xD595,0xA12A,0xB0A3,0x8238,0x93B1,0x6B46,0x7ACF,0x4854,0x59DD,0x2D62,0x3CEB,0x0E70,0x1FF9,
    0xF78F,0xE606,0xD49D,0xC514,0xB1AB,0xA022,0x92B9,0x8330,0x7BC7,0x6A4E,0x58D5,0x495C,0x3DE3,0x2C6A,0x1EF1,0x0F78  
 ];
 /*************************************************
 * Calc CRC16 for Anviz TC-300,TC-400,TC-500,TC-550
 * 
 * @param binary $b
 */
 function tc_crc16($b){
  global $crc_table;
  $crc = 0xFFFF;
  for($l = 0; $l < strlen($b); $l++){
      $crc ^= ord($b[$l]);
      $crc = ($crc >> 8) ^ $crc_table[$crc & 255];
  }
  $res = strtoupper( dechex($crc) );
  return($res[2].$res[3].$res[0].$res[1]);
}  

/*****TEST AREA*****/
//$x = "A5000000033C0000"; //A5000000033C00003F90
 $x = "A5000000057300290100000000011000013EEB180800540065007300740000000000000000000000000001000000000050"; //A5000000057300290100000000011000013EEB1808005400650073007400000000000000000000000000010000000000506F54
echo tc_crc16(hex2bin($x)); 
?>

Answer 1

我咨询了R＆amp; D团队，他们告诉我问题是CRC16校验和。请下载包含CRC16Demo的CRC.rar文件，如果对您有用，请告诉我。 http://download.anviz.com/felix/CRC.rar

亲切的问候，

Anviz支持团队

http://anviz.com

Answer 2

我知道这是一个古老的问题/答案，但这是我能找到的与Anviz有关的唯一有用的东西，不适用于Windows，所以我会用更多信息更新它以防其他人需要它在未来：

命令格式

STXCH    (device code)    CMD（command)     LEN（data length)      DATA        CRC16
0xA5        4Bytes            1Byte              2Bytes         0-400Bytes    2Bytes

响应格式

STX CH   (device code)    ACK（response)       RET（return value)     LEN（data length)        DATA       CRC16
0xA5        4Bytes      1Byte（command+0x80）      1Byte                  2Bytes            0-400Bytes    2Bytes

描述

四字节CH的顺序：IDHH，IDHL，IDLH，IDLL;
CRC16检查表示所有数据CRC16，两字节CRC16的顺序：CRCL CRCH;
当CH为0时，所有连接的设备都将响应此命令。
RET定义为：
- 定义ACK_SUCCESS 0x00 //操作成功
- 定义ACK_FAIL 0x01 //操作失败
- 定义ACK_FULL 0x04 //用户满
- 定义ACK_EMPTY 0x05 //用户空
- 定义ACK_NO_USER 0x06 //用户不存在
- 定义ACK_TIME_OUT 0x08 //捕获超时
- 定义ACK_USER_OCCUPIED 0x0A //用户已存在
- 定义ACK_FINGER_OCCUPIED 0x0B //指纹已存在
当RET！= ACK_SUCCESS时，响应数据中的DATA和LEN始终为0.

命令

我已将Anviz技术支持的通信协议文档上传到https://github.com/benperiton/anviz-protocol

什么是AnViz设备的校验和算法？

2 个答案:

命令格式

响应格式

描述

命令