{"id":925,"date":"2019-10-18T09:57:58","date_gmt":"2019-10-18T01:57:58","guid":{"rendered":"http:\/\/iqotom.com\/?p=925"},"modified":"2019-10-18T09:58:01","modified_gmt":"2019-10-18T01:58:01","slug":"usb%e4%bc%a0%e8%be%93%e4%b9%8b%e6%8e%a7%e5%88%b6%e4%bc%a0%e8%be%93","status":"publish","type":"post","link":"http:\/\/iqotom.com\/?p=925","title":{"rendered":"USB\u4f20\u8f93\u4e4b\u63a7\u5236\u4f20\u8f93"},"content":{"rendered":"\n

\u539f\u6587\uff1a https:\/\/blog.csdn.net\/go_str\/article\/details\/80782229<\/a> <\/p>\n\n\n\n

================================================================
\u300aUSB\u884c\u4e1a\u6807\u51c6\u4ecb\u7ecd<\/a>\u300b
\u300aUSB\u901a\u8baf\u8fc7\u7a0b<\/a>\u300b
\u300aUSB\u4e2d\u7684\u7aef\u70b9\u8be6\u7ec6\u4e86\u89e3<\/a>\u300b
\u300aUSB\u4f20\u8f93\u4e4b\u63a7\u5236\u4f20\u8f93<\/a>\u300b
================================================================ <\/p>\n\n\n\n

USB\u4f20\u8f93\u7c7b\u578b\u5206\u4e3a\u4ee5\u4e0b\u56db\u79cd \uff1a<\/p>\n\n\n\n

  1. \u6279\u91cf\u4f20\u8f93<\/strong>\uff1a\u6279\u91cf\u4f20\u8f93\u4e00\u822c\u7528\u4e8e\u6279\u91cf\u7684\u548c\u975e\u5b9e\u65f6\u7684\u6570\u636e\u4f20\u8f93\uff0c\u901a\u4fd7\u7684\u6765\u8bf4\u5c31\u662f\u7528\u4e8e\u6570\u636e\u91cf\u5927\u4f46\u5bf9\u65f6\u95f4\u8981\u6c42\u53c8\u4e0d\u9ad8\u7684\u573a\u5408\u7684\u4e00\u79cd\u4f20\u8f93\u65b9\u5f0f\uff0c\u7c7b\u4f3c\u7528\u4e8eUSB\u6253\u5370\u673a\u548cUSB\u626b\u63cf\u4eea\u7b49\u7b49\u3002 <\/li>
  2. \u4e2d\u65ad\u4f20\u8f93<\/strong>\uff1a\u4e2d\u65ad\u4f20\u8f93\u4e00\u822c\u7528\u4e8e\u5c0f\u6279\u91cf\u7684\u548c\u975e\u8fde\u7eed\u7684\u6570\u636e\u4f20\u8f93\uff0c\u901a\u4fd7\u7684\u6765\u8bf4\u5c31\u662f\u7528\u4e8e\u6570\u636e\u91cf\u5c0f\u7684\u6570\u636e\u4e0d\u8fde\u7eed\u7684\u4f46\u5b9e\u65f6\u6027\u9ad8\u7684\u573a\u5408\u7684\u4e00\u79cd\u4f20\u8f93\u65b9\u5f0f\uff0c\u7c7b\u4f3c\u7528\u4e8eUSB\u9f20\u6807\u548cUSB\u952e\u76d8\u7b49\u7b49\u3002 <\/li>
  3. \u7b49\u65f6\u4f20\u8f93<\/strong>\uff1a\u7b49\u65f6\u4f20\u8f93\u4e5f\u6709\u201c\u540c\u6b65\u4f20\u8f93\u201d\u7684\u53eb\u6cd5\uff0c\u4e00\u822c\u7528\u4e8e\u8981\u6c42\u6570\u636e\u8fde\u7eed\u3001\u5b9e\u65f6\u4e14\u6570\u636e\u91cf\u5927\u7684\u573a\u5408\uff0c\u5176\u5bf9\u4f20\u8f93\u5ef6\u65f6\u5341\u5206\u654f\u611f\uff0c\u7c7b\u4f3c\u7528\u4e8eUSB\u6444\u50cf\u8bbe\u5907\uff0cUSB\u8bed\u97f3\u8bbe\u5907\u7b49\u7b49\u3002 <\/li>
  4. \u63a7\u5236\u4f20\u8f93\uff1a<\/strong>\u63a7\u5236\u4f20\u8f93\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u4f20\u8f93\u65b9\u5f0f\uff0c\u4e14\u4f20\u8f93\u8fc7\u7a0b\u76f8\u5bf9\u4ee5\u4e0a\u4e09\u79cd\u800c\u8a00\u66f4\u590d\u6742\u4e00\u4e9b\uff0c\u4f46\u4e5f\u5341\u5206\u91cd\u8981\u3002\u5f53USB\u8bbe\u5907\u521d\u6b21\u8fde\u63a5\u4e3b\u673a\u65f6\uff0c\u7528\u63a7\u5236\u4f20\u8f93\u4f20\u9001\u63a7\u5236\u547d\u4ee4\u7b49\u5bf9\u8bbe\u5907\u8fdb\u884c\u914d\u7f6e\u3002\u540c\u65f6\u8bbe\u5907\u63a5\u5165\u4e3b\u673a\u65f6\uff0c\u9700\u8981\u901a\u8fc7\u63a7\u5236\u4f20\u8f93\u53bb\u83b7\u53d6USB\u8bbe\u5907\u7684\u63cf\u8ff0\u7b26\u4ee5\u53ca\u5bf9\u8bbe\u5907\u8fdb\u884c\u8bc6\u522b\uff0c\u5728\u8bbe\u5907\u7684\u679a\u4e3e\u8fc7\u7a0b\u4e2d\u90fd\u662f\u4f7f\u7528\u63a7\u5236\u4f20\u8f93\u8fdb\u884c\u6570\u636e\u4ea4\u6362\u3002 <\/li><\/ol>\n\n\n\n

    \u63a7\u5236\u4f20\u8f93\u7684\u7ed3\u6784<\/strong><\/h2>\n\n\n\n

    \u4e00\u6b21\u5b8c\u6574\u63a7\u5236\u4f20\u8f93\u53ef\u4ee5\u5206\u4e3a\u4e09\u4e2a\u9636\u6bb5\uff1a\u521d\u59cb\u8bbe\u7f6e\u9636\u6bb5—>\u6570\u636e\u9636\u6bb5(\u4e0d\u5fc5\u987b)—>\u72b6\u6001\u4fe1\u606f\u9636\u6bb5\u3002<\/p>\n\n\n\n

    1\u3001\u521d\u59cb\u8bbe\u7f6e\u9636\u6bb5<\/strong><\/h2>\n\n\n\n

    \u521d\u59cb\u8bbe\u7f6e\u9636\u6bb5\u7528\u4e8e\u56fa\u5b9a\u5efa\u7acbSETUP\u4e8b\u52a1\uff0c\u6807\u5fd7\u4e00\u6b21\u63a7\u5236\u4f20\u8f93\u7684\u5f00\u59cb\u3002\u521d\u59cb\u8bbe\u7f6e\u9636\u6bb5\u4e3a\u4e00\u4e2aSETUP\u4e8b\u52a1\uff0c\u540c\u6837\u5206\u4e3a\u4e09\u4e2a\u9636\u6bb5\u5982\u4e0b\uff1a <\/p>\n\n\n\n

    \u4ee4\u724c\u5305\u9636\u6bb5<\/strong>
    \u4e3b\u673a\u4f1a\u53d1\u9001\u4e00\u4e2aSETUP\u4ee4\u724c\u5305\uff0c\u5982\u4e0b\uff1a <\/p>\n\n\n\n\n \n \n
    Sync<\/th>\n SETUP<\/th>\n ADDR<\/th>\n ENDP<\/th>\n CRC5<\/th>\n <\/tr>\n
    _0000001<\/td>\n 0xB4<\/td>\n 0x00<\/td>\n 0x0<\/td>\n 0x08<\/td>\n <\/tr>\n<\/table>\n\n\n\n

    \u76f8\u5f53\u4e8e\u544a\u8bc9\u8bbe\u5907\uff0c\u6211\u8981\u8ddf\u4f60\u8fdb\u884c\u901a\u8baf\u8bf7\u4f60\u505a\u597d\u51c6\u5907 \u3002<\/p>\n\n\n\n

    \u6570\u636e\u5305\u9636\u6bb5<\/strong>
    \u53d1\u9001DATA0\u6570\u636e\u5305\uff08\u6ce8\u610fSETUP\u53ea\u80fd\u4f7f\u7528DATA0\u5305\uff0c8\u5b57\u8282\uff09\uff0c\u8ba9\u8bbe\u5907\u63a5\u6536\u3002\u4f8b\u5982\u53d1\u9001\u83b7\u53d6\u8bbe\u5907\u63cf\u8ff0\u7b26\u547d\u4ee4\u5305\uff1a <\/p>\n\n\n\n\n \n \n
    Sync<\/th>\n DATA0<\/th>\n DATA<\/th>\n CRC16<\/th>\n <\/tr>\n
    _0000001<\/td>\n 0xC3<\/td>\n 80 06 00 01 00 00 40 00<\/td>\n 0xBB29<\/td>\n <\/tr>\n<\/table>\n\n\n\n

    \u76f8\u5f53\u4e8e\u544a\u8bc9\u8bbe\u5907\uff0c\u8bf7\u5c06\u8bbe\u5907\u63cf\u8ff0\u7b26\u7684\u5185\u5bb9\u53d1\u7ed9\u6211 \u3002<\/p>\n\n\n\n

    \u63e1\u624b\u5305\u9636\u6bb5<\/strong>
    \u8bbe\u5907\u81ea\u52a8\u5e94\u7b54 <\/p>\n\n\n\n\n \n \n
    Sync<\/th>\n ACK<\/th>\n <\/tr>\n
    0000001<\/td>\n 0x4B<\/td>\n <\/tr>\n<\/table>\n\n\n\n

    \u7ed3\u5408\u4e0a\u9762\u7684\u8fc7\u7a0b\u53ef\u4ee5\u7528\u4e0b\u56fe\u8868\u793a\u521d\u59cb\u8bbe\u7f6e\u9636\u6bb5 <\/strong><\/p>\n\n\n\n

    \"\"
    usb control<\/figcaption><\/figure>\n\n\n\n

    2\u3001\u6570\u636e\u9636\u6bb5<\/strong><\/h2>\n\n\n\n

    \n\n\u521d\u59cb\u8bbe\u7f6e\u9636\u6bb5\u4e2d\u547d\u4ee4\u5982\u679c\u8981\u6c42\u8bfb\/\u5199\u6570\u636e\uff0c\u6570\u636e\u9636\u6bb5\u5c31\u4f1a\u5728\u8fd9\u4e00\u9636\u6bb5\u6765\u5177\u4f53\u4ea4\u6362\u6570\u636e(\u5982\u679c\u6ca1\u6709\u6570\u636e\u4ea4\u6362\u8981\u6c42\u5219\u53ef\u7701\u53bb\u8be5\u6b65\u9aa4\uff0c\u5177\u4f53\u6709SETUP\u4e8b\u52a1\u6807\u51c6\u8bf7\u6c42\u547d\u4ee4\u51b3\u5b9a)\u3002\u5728\u6b64\u9700\u8981\u505a\u4e00\u4e9b\u8bf4\u660e\uff1a\u4f20\u8f93\u63a7\u5236\u5728\u524d\u8a00\u6709\u8bf4\u5230\u63a7\u5236\u4f20\u8f93\u7684\u7528\u9014\u662f\u83b7\u53d6\u8bbe\u5907\u4fe1\u606f\u4e0e\u5bf9\u8bbe\u5907\u8fdb\u884c\u914d\u7f6e\u3002\u6240\u4ee5\u8fd9\u4e9b\u6570\u636e\u64cd\u4f5c\u5206\u4e3a\u4ee5\u4e0b\u4e09\u7c7b\uff1a\n\n<\/p>\n\n\n\n

    1. \u63a7\u5236\u8bfb\u4f20\u8f93 <\/li>
    2. \u63a7\u5236\u5199\u4f20\u8f93 <\/li>
    3. \u65e0\u6570\u636e\u63a7\u5236\u4f20\u8f93 <\/li><\/ol>\n\n\n\n

      \u4e00\u6b21\u63a7\u5236\u4f20\u8f93\u5fc5\u5b9a\u4e3a\u4e0a\u9762\u4e09\u79cd\u4e2d\u7684\u5176\u4e2d\u4e00\u79cd\uff0c\u6240\u4ee5\u6570\u636e\u9636\u6bb5\u4e2d\u7684\u6570\u636e\u4e8b\u52a1\u4e5f\u662f\u6839\u636e\u8be5\u89c4\u5219\u6765\u51b3\u5b9a\u6570\u636e\u4e8b\u52a1\u7684 \u3002<\/p>\n\n\n\n

      \u6b64\u5904\u8fd8\u5e94\u8be5\u6ce8\u610f\u7684\u662f\u6570\u636e\u9636\u6bb5\u662f\u7531\u4e00\u5230\u591a\u4e2aIN\/OUT\u4e8b\u52a1\u7ec4\u6210\u3002\u8fd9\u662f\u7531\u4e8e\u6709\u65f6\u5019\u5b58\u5728\u4e00\u4e2a\u4e8b\u52a1\u4f20\u4e0d\u5b8c\u7684\u6570\u636e\uff0c\u6240\u4ee5\u53ef\u80fd\u5b58\u5728\u591a\u4e2a\u8fde\u7eedIN\/OUT\u4e8b\u52a1\u7684\u60c5\u51b5\u3002\u8fd9\u4e5f\u5c31\u51b3\u5b9a\u4e86\uff0c\u5728\u540c\u4e00\u6b21\u6570\u636e\u4f20\u8f93\u9636\u6bb5\u4e2d\u4e8b\u52a1\u7c7b\u578b\u5fc5\u5b9a\u76f8\u540c(IN\/OUT\u4e8b\u52a1)\u3002 <\/p>\n\n\n\n

      2.1\u3001\u4f20\u8f93\u683c\u5f0f<\/strong><\/h3>\n\n\n\n

      \u7efc\u4e0a\u6240\u8ff0\uff0c\u6240\u4ee5\u4ece\u4f20\u8f93\u63a7\u5236\u7684\u4e0d\u540c\u7c7b\u578b\u6765\u8bb2\u8ff0\u6570\u636e\u9636\u6bb5\u7684\u683c\u5f0f\u4f1a\u66f4\u597d\u7406\u89e3 \u3002<\/p>\n\n\n\n

      2.1.1\u3001\u63a7\u5236\u8bfb\u4f20\u8f93<\/strong><\/h4>\n\n\n\n

      \u63a7\u5236\u8bfb\u4f20\u8f93\u65f6\u6570\u636e\u9636\u6bb5\u5728\u6574\u4e2a\u4f20\u8f93\u7684\u683c\u5f0f\u5982\u4e0b\u56fe\u84dd\u6846\u90e8\u5206 <\/p>\n\n\n\n

      \"\"
      usb control read<\/figcaption><\/figure><\/div>\n\n\n\n

      \u6570\u636e\u65b9\u5411\u4e3a\uff1a\u8bbe\u5907 \u2014> \u4e3b\u673a (\u8bfb\u53d6USB\u63cf\u8ff0\u7b26) <\/p>\n\n\n\n

      \u8fd9\u91cc\u6bcf\u4e2a\u6570\u636e\u5305\u662fDATA0\u548cDATA1\u4ea4\u66ff\u51fa\u73b0\u7684\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\u5f53\u6700\u540e\u4e00\u4e2a\u5305\u521a\u597d\u4e3a\u5141\u8bb8\u7684\u6700\u5927\u6570\u636e\u5305\u5927\u5c0f\u65f6\u9700\u8981\u518d\u4f20\u4e00\u4e2a0\u957f\u5ea6\u7684\u6570\u636e\u5305\uff0c\u8868\u793a\u4f20\u8f93\u7684\u7ed3\u675f\u3002 <\/p>\n\n\n\n

      \u63a7\u5236\u8bfb\u4f20\u8f93\u7684\u6570\u636e\u8fc7\u7a0bIN\u4e8b\u52a1\u7684\u4e09\u4e2a\u9636\u6bb5\u5982\u4e0b\uff1a <\/p>\n\n\n\n

      \u4ee4\u724c\u5305\u9636\u6bb5<\/strong>
      \u4e3b\u673a\u4f1a\u53d1\u9001\u4e00\u4e2aIN\u4ee4\u724c\u5305\uff0c\u89e6\u53d1\u8bbe\u5907\u4ea7\u751fIN\u5305\u4e2d\u65ad\uff0c\u5982\u4e0b\uff1a <\/p>\n\n\n\n\n \n \n
      Sync<\/th>\n IN<\/th>\n ADDR<\/th>\n ENDP<\/th>\n CRC5<\/th>\n <\/tr>\n
      _0000001<\/td>\n 0x96<\/td>\n 0x00<\/td>\n 0x0<\/td>\n 0x08<\/td>\n <\/tr>\n<\/table>\n\n\n\n

      \u6570\u636e\u5305\u9636\u6bb5<\/strong>
      \u8bbe\u5907\u56de\u590d\u4e3b\u673a\u8bf7\u6c42\uff0c\u56de\u5e94\u6570\u636e\u3002\u4f8b\u5982\u56de\u590d\u8bbe\u5907\u63cf\u8ff0\u7b26\u547d\u4ee4\u8bf7\u6c42\uff1a <\/p>\n\n\n\n\n \n \n
      Sync<\/th>\n DATA1<\/th>\n DATA<\/th>\n CRC16<\/th>\n <\/tr>\n
      _0000001<\/td>\n 0xD2<\/td>\n 12 01 00 01 DC 00 00 10 71 04 66 06 00 01 00 00<\/td>\n 0x42C6<\/td>\n <\/tr>\n<\/table>\n\n\n\n

      \u63e1\u624b\u5305\u9636\u6bb5<\/strong>
      \u4e3b\u673a\u81ea\u52a8\u5e94\u7b54 <\/p>\n\n\n\n\n \n \n
      Sync<\/th>\n ACK<\/th>\n <\/tr>\n
      0000001<\/td>\n 0x4B<\/td>\n <\/tr>\n<\/table>\n\n\n\n

      2.1.2\u3001\u63a7\u5236\u5199\u4f20\u8f93<\/strong><\/h4>\n\n\n\n

      \u63a7\u5236\u5199\u4f20\u8f93\u65f6\u6570\u636e\u9636\u6bb5\u5728\u6574\u4e2a\u4f20\u8f93\u7684\u683c\u5f0f\u5982\u4e0b\u4e0b\u56fe\u84dd\u6846\u90e8\u5206\uff1a <\/p>\n\n\n\n

      \"\"
      USB control write<\/figcaption><\/figure>\n\n\n\n

      \u6570\u636e\u65b9\u5411\u4e3a\uff1a\u4e3b\u673a \u2014> \u8bbe\u5907\uff08\u914d\u7f6eUSB\u8bbe\u5907\uff09 <\/p>\n\n\n\n

      \u4f20\u8f93\u8fc7\u7a0b\u548c\u89c4\u5219\u57fa\u672c\u4e0e\u8bfb\u53d6\u76f8\u4f3c\uff0c\u4e0d\u591a\u505a\u8d58\u8ff0 \u3002<\/p>\n\n\n\n

      2.1.3\u3001\u65e0\u6570\u636e\u63a7\u5236<\/strong><\/h4>\n\n\n\n

      \n\n\u63a7\u5236\u4f20\u8f93\u4e0d\u4e00\u5b9a\u8981\u4f20\u8f93\u5f88\u591a\u6570\u636e\uff0c\u6709\u4e9b\u63a7\u5236\u53ef\u80fd\u53ea\u662f\u544a\u8bc9\u8bbe\u5907\u8981\u505a\u4e00\u4ef6\u4e8b\uff0c\u8fd9\u4e2a\u547d\u4ee4\u5305\u542b\u5728\u5efa\u7acb\u9636\u6bb5\u7684\u5efa\u7acb\u4e8b\u52a1\u76848\u5b57\u8282\u6570\u636e\u4e2d\u5373\u53ef\uff0c\u8bbe\u5907\u53ea\u9700\u56de\u590d\u4e3b\u673a\u6536\u5230\u547d\u4ee4\u4e0e\u5426\u5373\u53ef\uff0c\u6240\u4ee5\u5c31\u8df3\u8fc7\u6570\u636e\u9636\u6bb5\u76f4\u63a5\u8fdb\u5165\u5230\u72b6\u6001\u9636\u6bb5\u3002\u65e0\u6570\u636e\u63a7\u5236\u7684\u683c\u5f0f\u5982\u4e0b\u56fe\uff1a\n\n<\/p>\n\n\n\n

      \"\"<\/figure>\n\n\n\n

      \n\n\u6240\u4ee5\u6ce8\u610f\u5728\u65e0\u6570\u636e\u63a7\u5236\u4f20\u8f93\u65f6\uff0c\u662f\u65e0\u6570\u636e\u9636\u6bb5\u7684!\n\n<\/p>\n\n\n\n

      3\u3001\u72b6\u6001\u4fe1\u606f\u9636\u6bb5<\/strong><\/h2>\n\n\n\n

      \u72b6\u6001\u4fe1\u606f\u9636\u6bb5\u662f\u8981\u8fd4\u56de\u6570\u636e\u4f20\u8f93\u7684\u6210\u529f\u4e0e\u5426\uff0c\u5177\u4f53\u4e5f\u9700\u8981\u770b\u63a7\u5236\u4f20\u8f93\u7684\u7c7b\u578b\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u72b6\u6001\u4fe1\u606f\u7684\u6570\u636e\u4f20\u8f93\u65b9\u5411\u4e0e\u6570\u636e\u9636\u6bb5\u65b9\u5411\u76f8\u53cd\u3002\u4f8b\u5982\uff0c\u6570\u636e\u9636\u6bb5\u4e3aIN\u4e8b\u52a1\u5219\u72b6\u6001\u4fe1\u606f\u9636\u6bb5\u4e3aOUT\u4e8b\u52a1\u3002 <\/p>\n\n\n\n

      3.1\u3001\u63a7\u5236\u8bfb\u4f20\u8f93<\/strong><\/h3>\n\n\n\n

      \u5728\u63a7\u5236\u8bfb\u4f20\u8f93\u65f6\uff0c\u8be5\u9636\u6bb5\u5219\u4e3aOUT\u4e8b\u52a1\uff0c\u5176\u4e2d\u7684\u6570\u636e\u5305\u56fa\u5b9a\u4e3aDATA1\u6570\u636e\u5305\u3002\u8fd4\u56de\u6570\u636e\u6210\u529f\u4e0e\u5426\u4ee5\u6709\u4ee5\u4e0b\u60c5\u51b5\uff1a <\/p>\n\n\n\n

      3.1.1 \u3001\u8bfb\u6570\u636e\u6210\u529f <\/h4>\n\n\n\n

      \u4e3b\u673a\u53d1\u9001OUT\u4ee4\u724c\u5305(ping\u4ee4\u724c\u5305\uff0c\u9ad8\u901f\u60c5\u51b5\u4e0b)\uff0c\u4e3b\u673a\u53d1\u90010\u957f\u5ea6\u6570\u636e\u5305\uff0c\u8bbe\u5907ACK\u3002 <\/p>\n\n\n\n

      3.1.2 \u3001\u6570\u636e\u4f20\u8f93\u51fa\u9519 <\/h4>\n\n\n\n

      \u4e3b\u673a\u53d1\u9001OUT\u4ee4\u724c\u5305(ping\u4ee4\u724c\u5305\uff0c\u9ad8\u901f\u60c5\u51b5\u4e0b)\uff0c\u4e3b\u673a\u53d1\u90010\u957f\u5ea6\u6570\u636e\u5305\uff0c\u8bbe\u5907STALL\u3002 <\/p>\n\n\n\n

      3.1.3 \u3001\u8bbe\u5907\u5fd9(\u6bd4\u5982\u6b63\u5728\u8bfb\u6570\u636e) <\/h4>\n\n\n\n

      \u4e3b\u673a\u53d1\u9001OUT\u4ee4\u724c\u5305(ping\u4ee4\u724c\u5305\uff0c\u9ad8\u901f\u60c5\u51b5\u4e0b)\uff0c\u4e3b\u673a\u53d1\u90010\u957f\u5ea6\u6570\u636e\u5305\uff0c\u8bbe\u5907NAK\u3002\u00a0 <\/p>\n\n\n\n

      \u63a7\u5236\u8bfb\u4f20\u8f93\u7684\u72b6\u6001\u4fe1\u606f\u9636\u6bb5OUT\u4e8b\u52a1\u7684\u4e09\u4e2a\u9636\u6bb5\u5982\u4e0b(\u4ee5ACK\u4e3a\u4f8b)\uff1a <\/p>\n\n\n\n

      \u4ee4\u724c\u5305\u9636\u6bb5\uff1a<\/strong>
      \u4e3b\u673a\u4f1a\u53d1\u9001\u4e00\u4e2aOUT\u4ee4\u724c\u5305\uff0c\u5982\u4e0b\uff1a <\/p>\n\n\n\n\n \n \n
      Sync<\/th>\n OUT<\/th>\n ADDR<\/th>\n ENDP<\/th>\n CRC5<\/th>\n <\/tr>\n
      _0000001<\/td>\n 0x87<\/td>\n 0x00<\/td>\n 0x0<\/td>\n 0x08<\/td>\n <\/tr>\n<\/table>\n\n\n\n

      \u6570\u636e\u5305\u9636\u6bb5<\/strong>
      \u4e3b\u673a\u53d1\u90010\u5b57\u8282\u6570\u636e\u5305\uff0c\u4f5c\u4e3a\u72b6\u6001\u6b63\u5e38\u4fe1\u606f\u56de\u5e94\uff1a <\/p>\n\n\n\n\n \n \n
      Sync<\/th>\n DATA1<\/th>\n DATA<\/th>\n CRC16<\/th>\n <\/tr>\n
      _0000001<\/td>\n 0xD2<\/td>\n <\/td>\n 0x000<\/td>\n <\/tr>\n<\/table>\n\n\n\n

      \u63e1\u624b\u5305\u9636\u6bb5<\/strong>
      \u8bbe\u5907\u81ea\u52a8\u5e94\u7b54 <\/p>\n\n\n\n\n \n \n
      Sync<\/th>\n ACK<\/th>\n <\/tr>\n
      0000001<\/td>\n 0x4B<\/td>\n <\/tr>\n<\/table>\n\n\n\n

      3.2\u3001\u63a7\u5236\u5199\u4f20\u8f93<\/strong> <\/h3>\n\n\n\n

      \n\n\u5728\u63a7\u5236\u8bfb\u4f20\u8f93\u65f6\uff0c\u8be5\u9636\u6bb5\u5219\u4e3aIN\u4e8b\u52a1\uff0c\u5176\u4e2d\u7684\u6570\u636e\u5305\u56fa\u5b9a\u4e3aDATA1\u6570\u636e\u5305\u3002\u8fd4\u56de\u6570\u636e\u6210\u529f\u4e0e\u5426\u4ee5\u6709\u4ee5\u4e0b\u60c5\u51b5\uff1a\n\n<\/p>\n\n\n\n

      3.2.1\u3001 \u5199\u6570\u636e\u6210\u529f <\/h4>\n\n\n\n

      \n\n\u4e3b\u673a\u53d1\u9001IN\u4ee4\u724c\u5305\uff0c\u8bbe\u5907\u53d1\u90010\u957f\u5ea6\u6570\u636e\u5305\uff0c\u4e3b\u673a\u56de\u590dACK\u3002\n\n<\/p>\n\n\n\n

      3.2.2\u3001 \u6570\u636e\u4f20\u8f93\u51fa\u9519 <\/h4>\n\n\n\n

      \u4e3b\u673a\u53d1\u9001IN\u4ee4\u724c\u5305\uff0c\u8bbe\u5907\u56de\u590dSTALL \u3002<\/p>\n\n\n\n

      3.2.3\u3001 \u8bbe\u5907\u5fd9(\u6bd4\u5982\u6b63\u5728\u5199\u6570\u636e)\u00a0 <\/h4>\n\n\n\n

      \u4e3b\u673a\u53d1\u9001IN\u4ee4\u724c\u5305\uff0c\u8bbe\u5907\u56de\u590dNAK\u3002\u00a0 <\/p>\n\n\n\n

      \u63a7\u5236\u5199\u4f20\u8f93\u7684\u72b6\u6001\u4fe1\u606f\u9636\u6bb5IN\u4e8b\u52a1\u8fc7\u7a0b\u4e0e\u8bfb\u7c7b\u4f3c \u3002<\/p>\n\n\n\n

      3.3\u3001\u65e0\u6570\u636e\u63a7\u5236\u4f20\u8f93<\/strong><\/h3>\n\n\n\n

      \u8be5\u9636\u6bb5\u5219\u4e3aIN\u4e8b\u52a1\uff0c\u5176\u89c4\u5219\u4e0e\u63a7\u5236\u5199\u4f20\u8f93\u76f8\u4f3c \u3002<\/p>\n\n\n\n

      \u81f3\u6b64\uff0c\u4e00\u6b21\u63a7\u5236\u4f20\u8f93\u5b8c\u6210\uff0c\u6574\u4e2a\u8fc7\u7a0b\u7ed3\u675f \u3002<\/h2>\n","protected":false},"excerpt":{"rendered":"

      USB\u4f20\u8f93\u4e4b\u63a7\u5236\u4f20\u8f93\uff1b
      \nUSB\u4f20\u8f93\u7c7b\u578b\u5206\u4e3a\u56db\u79cd\uff1a\u6279\u91cf\u4f20\u8f93\u3001\u4e2d\u65ad\u4f20\u8f93\u3001\u7b49\u65f6\u4f20\u8f93\u3001\u63a7\u5236\u4f20\u8f93\u3002<\/p>\n","protected":false},"author":1,"featured_media":927,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[78,63],"tags":[76],"_links":{"self":[{"href":"http:\/\/iqotom.com\/index.php?rest_route=\/wp\/v2\/posts\/925"}],"collection":[{"href":"http:\/\/iqotom.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/iqotom.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/iqotom.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/iqotom.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=925"}],"version-history":[{"count":25,"href":"http:\/\/iqotom.com\/index.php?rest_route=\/wp\/v2\/posts\/925\/revisions"}],"predecessor-version":[{"id":955,"href":"http:\/\/iqotom.com\/index.php?rest_route=\/wp\/v2\/posts\/925\/revisions\/955"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/iqotom.com\/index.php?rest_route=\/wp\/v2\/media\/927"}],"wp:attachment":[{"href":"http:\/\/iqotom.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/iqotom.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=925"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/iqotom.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}