{"id":844,"date":"2019-10-16T16:21:30","date_gmt":"2019-10-16T08:21:30","guid":{"rendered":"http:\/\/iqotom.com\/?p=844"},"modified":"2019-10-18T10:01:52","modified_gmt":"2019-10-18T02:01:52","slug":"usb%e9%80%9a%e8%ae%af%e8%bf%87%e7%a8%8b","status":"publish","type":"post","link":"http:\/\/iqotom.com\/?p=844","title":{"rendered":"USB\u901a\u8baf\u8fc7\u7a0b"},"content":{"rendered":"\n

\u539f\u6587\uff1a https:\/\/blog.csdn.net\/go_str\/article\/details\/80802452<\/a> <\/p>\n\n\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
================================================================\n\n<\/p>\n\n\n\n

\u4e00\u3001USB\u7cfb\u7edf\u7684\u7ed3\u6784<\/strong><\/h2>\n\n\n\n

USB\u7cfb\u7edf\u662f\u7531\u4e09\u4e2a\u903b\u8f91\u5c42\u7ec4\u6210\uff1a\u529f\u80fd\u5c42\u3001USB\u8bbe\u5907\u5c42\u548cUSB\u603b\u7ebf\u63a5\u53e3\u5c42\u3002\u5e76\u4e14\u6bcf\u4e00\u5c42\u90fd\u662f\u7531\u4e3b\u673a\u548cUSB\u8bbe\u5907\u4e0d\u540c\u7684\u529f\u80fd\u6a21\u5757\u7ec4\u6210\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a <\/p>\n\n\n\n

\"\"
\"\"<\/figcaption><\/figure><\/div>\n\n\n\n

1\u3001\u529f\u80fd\u5c42(\u63a5\u53e3)<\/strong><\/h3>\n\n\n\n

\u529f\u80fd\u5c42\u662f\u7531\u5ba2\u6237\u8f6f\u4ef6\u548c\u8bbe\u5907\u65b9\u7684\u529f\u80fd\u5355\u5143\u7ec4\u6210\uff0c\u5176\u80fd\u591f\u5b9e\u73b0USB\u8bbe\u5907\u4f20\u8f93\u7684\u7279\u5b9a\u529f\u80fd\u3002\u901a\u8fc7\u529f\u80fd\u5c42\u53ef\u76f4\u89c2\u5730\u7406\u89e3USB\u4f20\u8f93\u7684\u6570\u636e\u5185\u5bb9\u3002\u5176\u4e2d\uff0c\u5ba2\u6237\u8f6f\u4ef6\u901a\u8fc7USB\u7cfb\u7edf\u8f6f\u4ef6\u6765\u4e0eUSB\u8bbe\u5907\u8fdb\u884c\u901a\u4fe1\u3002\u529f\u80fd\u5355\u5143\u5bf9\u4e8e\u5ba2\u6237\u8f6f\u4ef6\uff0c\u53ef\u89c6\u4e3a\u63a5\u53e3\u7684\u96c6\u5408\u3002 <\/p>\n\n\n\n

2\u3001USB\u8bbe\u5907\u5c42\u2002(\u7aef\u70b9)<\/strong><\/h3>\n\n\n\n

    USB\u8bbe\u5907\u5c42\u662f\u7531USB\u7cfb\u7edf\u8f6f\u4ef6\u548cUSB\u8bbe\u5907\u7684USB\u903b\u8f91\u8bbe\u5907\u7ec4\u6210\uff0c\u5176\u5b9e\u73b0\u4e3b\u673a\u548cUSB\u8bbe\u5907\u4e4b\u95f4\u4f20\u8f93\u7684\u5177\u4f53\u914d\u7f6e\u3002USB\u903b\u8f91\u8bbe\u5907\u5bf9\u4e8eUSB\u7cfb\u7edf\u8f6f\u4ef6\uff0c\u53ef\u89c6\u4e3a\u7aef\u70b9\u7684\u96c6\u5408\u3002<\/p>\n\n\n\n

3\u3001USB\u603b\u7ebf\u63a5\u53e3\u5c42<\/strong><\/h3>\n\n\n\n

USB\u603b\u7ebf\u63a5\u53e3\u5c42\u662f\u7531\u4e3b\u673a\u7684USB\u4e3b\u63a7\u5236\u5668\u548c\u8bbe\u5907\u7684USB\u603b\u7ebf\u63a5\u53e3\u7ec4\u6210\u3002\u5176\u5b9e\u73b0\u4e3b\u673a\u548cUSB\u8bbe\u5907\u5b9e\u9645\u7684\u6570\u636e\u4f20\u8f93\u3002 <\/p>\n\n\n\n

4\u3001\u4e3b\u673a\u90e8\u5206<\/strong><\/h3>\n\n\n\n

USB\u4e3b\u673a\u90e8\u5206\u7531\u5ba2\u6237\u8f6f\u4ef6\u3001USB\u7cfb\u7edf\u8f6f\u4ef6\u548cUSB\u603b\u7ebf\u63a5\u53e3\u7ec4\u6210\u3002 <\/p>\n\n\n\n

  1. \u5ba2\u6237\u8f6f\u4ef6
    \u5ba2\u6237\u8f6f\u4ef6\u8d1f\u8d23\u548cUSB\u8bbe\u5907\u7684\u529f\u80fd\u5355\u5143\u8fdb\u884c\u901a\u4fe1\uff0c\u4ee5\u5b9e\u73b0\u7279\u5b9a\u7684\u529f\u80fd\u3002\u5ba2\u6237\u8f6f\u4ef6\u4e0d\u80fd\u76f4\u63a5\u4e0eUSB\u8bbe\u5907\u76f8\u8fde\u63a5\uff0c\u5fc5\u987b\u901a\u8fc7USB\u7cfb\u7edf\u8f6f\u4ef6\u548cUSB\u603b\u7ebf\u63a5\u53e3\u624d\u80fd\u5b9e\u73b0\u8fde\u63a5\u3002\u5ba2\u6237\u8f6f\u4ef6\u5305\u62ecUSB\u8bbe\u5907\u9a71\u52a8\u7a0b\u5e8f<\/strong>\u548c\u754c\u9762\u5e94\u7528\u7a0b\u5e8f\u4e24\u90e8\u5206\u3002 <\/li>
  2. USB\u7cfb\u7edf\u8f6f\u4ef6
    USB\u7cfb\u7edf\u8f6f\u4ef6\u8d1f\u8d23\u548cUSB\u903b\u8f91\u8bbe\u5907\u8fdb\u884c\u914d\u7f6e\u901a\u4fe1\uff0c\u5e76\u7ba1\u7406\u5ba2\u6237\u8f6f\u4ef6\u542f\u52a8\u7684\u6570\u636e\u3002\u4e00\u822c\u5305\u62ecUSB\u603b\u7ebf\u9a71\u52a8\u7a0b\u5e8f<\/strong>\u3001USB\u4e3b\u63a7\u5236\u9a71\u52a8\u7a0b\u5e8f<\/strong>\u548c\u975eUSB\u4e3b\u673a\u8f6f\u4ef6\u4e09\u4e2a\u90e8\u5206\uff0c\u8fd9\u90e8\u5206\u4f1a\u7531\u7cfb\u7edf\u63d0\u4f9b\u3002 <\/li>
  3. USB\u603b\u7ebf\u63a5
    USB\u603b\u7ebf\u63a5\u53e3\u5305\u62ec\u4e3b\u63a7\u5236\u5668\u548c\u8ddf\u96c6\u7ebf\u5668\u4e24\u90e8\u5206\u3002\u5176\u4e2d\uff0c\u4e3b\u63a7\u5236\u5668\u662f\u8d1f\u8d23\u5b8c\u6210\u4e3b\u673a\u548cUSB\u8bbe\u5907\u95f4\u7684\u6570\u636e\u5b9e\u9645\u4f20\u8f93\u3002\u6839\u96c6\u7ebf\u5668\u662f\u4e3aUSB\u7cfb\u7edf\u8fde\u63a5\u8d77\u70b9\u3002 <\/li><\/ol>\n\n\n\n

    5\u3001\u8bbe\u5907\u90e8\u5206<\/strong><\/h3>\n\n\n\n

    USB\u8bbe\u5907\u90e8\u5206\u7531\u4e09\u4e2a\u529f\u80fd\u6a21\u5757\u7ec4\u6210\uff0c\u5206\u522b\u662fUSB\u603b\u7ebf\u63a5\u53e3\u3001USB\u903b\u8f91\u8bbe\u5907\u548c\u529f\u80fd\u5355\u5143\u3002
    \u529f\u80fd\u5355\u5143\u770b\u4f5c\u662f\u4e00\u4e2a\u63a5\u53e3\u7684\u96c6\u5408\uff1b
    USB \u903b\u8f91\u8bbe\u5907\u88abUSB\u7cfb\u7edf\u8f6f\u4ef6\u770b\u4f5c\u4e00\u4e2a\u7aef\u70b9\u7684\u96c6\u5408\uff1b
    USB\u603b\u7ebf\u63a5\u53e3\u662fUSB\u8bbe\u5907\u4e2d\u7684\u4e32\u884c\u63a5\u53e3\u5f15\u64ce(SIE)\u3002 <\/p>\n\n\n\n

    \u5f53\u5ba2\u6237\u7a0b\u5e8f\u901a\u8fc7USB\u7ba1\u9053\u53d1\u9001\u6216\u63a5\u6536\u6570\u636e\u65f6\uff0c\u5b83\u9996\u5148\u8c03\u7528Win32 APl\uff0c\u8c03\u7528\u6700\u7ec8\u5c06\u4f7f\u529f\u80fd\u9a71\u52a8\u7a0b\u5e8f\u6536\u5230\u4e00\u4e2aIRP\u3002\u800c\u9a71\u52a8\u7a0b\u5e8f\u7684\u5de5\u4f5c\u5c31\u662f\u628a\u5ba2\u6237\u7684\u8bf7\u6c42\u5f15\u5bfc\u5230\u6709\u6b63\u786e\u7aef\u70b9\u7684\u7ba1\u9053\u4e0a\u3002\u5b83\u628a\u8bf7\u6c42\u63d0\u4ea4\u5230\u603b\u7ebf\u9a71\u52a8\u7a0b\u5e8f\uff0c\u603b\u7ebf\u9a71\u52a8\u7a0b\u5e8f\u518d\u628a\u8bf7\u6c42\u5206\u89e3\u6210\u591a\u4e2a\u4e8b\u52a1\uff0c\u7136\u540e\u8fd9\u4e9b\u4e8b\u52a1\u88ab\u9001\u5f80\u603b\u7ebf\u3002\u603b\u7ebf\u4e0a\u7684\u4fe1\u606f\u6d41\u4ee5\u6bcf\u6beb\u79d2\u4e00\u5e27\u6570\u636e\u7684\u5f62\u5f0f\u6d41\u52a8\u3002\u603b\u7ebf\u9a71\u52a8\u7a0b\u5e8f\u5fc5\u987b\u5b89\u6392\u597d\u591a\u4e2a\u4e8b\u52a1\u4ee5\u4f7f\u5b83\u4eec\u80fd\u88ab\u88c5\u5165\u540c\u4e00\u5e27\u4e2d\u3002 <\/p>\n\n\n\n

    \u4e8c\u3001USB\u7684\u62d3\u6251\u7ed3\u6784<\/strong> <\/h2>\n\n\n\n

    USB\u662f\u4e00\u79cd\u4e3b\u4ece\u7ed3\u6784\u7684\u7cfb\u7edf\u3002\u4e3b\u673a\u53ebHost\uff0c\u4ece\u673a\u53eb\u505aDevice\uff08\u4e5f\u53eb\u8bbe\u5907\uff09\u3002\u901a\u5e38\u6240\u8bf4\u7684\u4e3b\u673a\u5177\u6709\u4e00\u4e2a\u6216\u8005\u591a\u4e2aUSB\u4e3b\u63a7\u5236\u5668\uff08host  controller\uff09\u548c\u6839\u96c6\u7ebf\u5668\uff08root hub\uff09\u3002\u4e3b\u63a7\u5236\u5668\u4e3b\u8981\u8d1f\u8d23\u6570\u636e\u5904\u7406\uff0c\u800c\u8ddf\u96c6\u7ebf\u5668\u5219\u63d0\u4f9b\u4e00\u4e2a\u8fde\u63a5\u4e3b\u63a7\u5236\u5668\u4e0e\u8bbe\u5907\u4e4b\u95f4\u7684\u63a5\u53e3\u548c\u901a\u8def\u3002 <\/p>\n\n\n\n

    \u901a\u5e38\u60c5\u51b5\u4e0b\uff0cPC\u673a\u4e0a\u6709\u591a\u4e2a\u4e3b\u63a7\u5668\u548c\u591a\u4e2aUSB\u53e3\uff0c\u4e00\u4e2a\u4e3b\u63a7\u5668\u4e0b\u6709\u4e00\u6839\u96c6\u7ebf\u5668\uff0c\u4e00\u6839\u96c6\u7ebf\u5668\u901a\u5e38\u5177\u6709\u4e00\u4e2a\u6216\u8005\u51e0\u4e2aUSB\u63a5\u53e3\u3002\u901a\u5e38\u96c6\u7ebf\u5668\u53ef\u4ee5\u901a\u8fc7USB\u96c6\u7ebf\u5668\u6765\u6269\u5c55USB\u63a5\u53e3\uff0c\u53ea\u662f\u5e26\u5bbd\u662f\u4e0d\u80fd\u591f\u62d3\u5bbd\u7684\uff0c\u56e0\u4e3a\u5e26\u5bbd\u662f\u5171\u4eab\u4e00\u4e2aUSB\u4e3b\u63a7\u5668\u7684\u3002 <\/p>\n\n\n\n

    \u4e86\u89e3\u4e0a\u9762\u7684\u4fe1\u606f\u540e\uff0c\u518d\u6765\u770bUSB\u7684\u62d3\u6251\u7ed3\u6784\u5982\u4e0b\u56fe\uff1a <\/p>\n\n\n\n

    \"\"
    USB \u7ed3\u6784<\/figcaption><\/figure><\/div>\n\n\n\n

    USB\u7684\u62d3\u6251\u7ed3\u6784\u770b\u8d77\u6765\u662f\u4e00\u4e2a\u91d1\u5b57\u5854\u5f62\u7684\u7ed3\u6784\uff0c\u5177\u4f53\u6784\u6210\u5982\u4e0b\uff1a <\/p>\n\n\n\n

    \u5854\u9876\u662fUSB\u7684\u4e3b\u63a7\u5668\u548c\u6839\u96c6\u7ebf\u5668\uff0c\u4e0b\u9762\u63a5USB\u96c6\u7ebf\u5668\uff0cUSB\u96c6\u7ebf\u5668\u5c06\u4e00\u4e2aUSB\u53e3\u6269\u5c55\u4e3a\u591a\u4e2aUSB\u53e3\uff0c\u591a\u4e2aUSB\u53e3\u540c\u6837\u53ef\u4ee5\u901a\u8fc7USB\u96c6\u7ebf\u5668\u6269\u5c55\u51fa\u66f4\u591a\u7684\u63a5\u53e3\u3002\u4e0d\u8fc7USB\u53e3\u5e76\u4e0d\u80fd\u901a\u8fc7USB\u96c6\u7ebf\u5668\u65e0\u6b62\u5883\u7684\u6269\u5c55\uff0c\u4ed6\u662f\u6709\u9650\u5236\u7684\uff0c\u4f8b\u5982\u5728USB2.0\u89c4\u5b9a\u5b83\u6700\u591a\u6269\u5c556\u6b21\u3002 <\/p>\n\n\n\n

    \u7406\u8bba\u4e0a\u4e00\u4e2aUSB\u4e3b\u63a7\u5668\u6700\u591a\u53ef\u63a5127\u4e2a\u8bbe\u5907\uff0c\u8fd9\u662f\u56e0\u4e3a\u534f\u8bae\u89c4\u5b9a\u6bcf\u4e2aUSB\u8bbe\u5907\u5177\u6709\u4e00\u4e2a7bit\u5730\u5740(\u53d6\u503c\u8303\u56f4\u4e3a0~127\uff0c\u5730\u5740\u7528\u4e8e\u7ed9\u4e3b\u673a\u8bc6\u522b\u662f\u54ea\u4e2a\u8bbe\u5907\uff0c\u5176\u4e2d0\u5730\u5740\u503c\u5f97\u6ce8\u610f\uff0c\u662f\u7ed9\u521a\u63a5\u5165\u672a\u521d\u59cb\u5316\u7684\u8bbe\u5907\u4f7f\u7528\u7684)\u3002 <\/p>\n\n\n\n

    \u4e09\u3001USB\u7684\u8bbe\u5907\u67b6\u6784<\/strong><\/h2>\n\n\n\n

    \u8bbe\u5907\u67b6\u6784\u8ba4\u4e3a\u8bbe\u5907\u662f\u7531\u4e00\u4e9b\u914d\u7f6e\u3001\u63a5\u53e3\u548c\u7aef\u70b9\u6784\u6210\u7684\u3002\u5176\u4e2d\u914d\u7f6e\u548c\u63a5\u53e3\u662fUSB\u529f\u80fd\u7684\u62bd\u8c61\uff0c\u5b9e\u9645\u7684\u6570\u636e\u4f20\u8f93\u7531\u7aef\u70b9\u6765\u5b8c\u6210\u3002\u5176\u5bf9\u5e94\u5173\u7cfb\u5982\u4e0b\u56fe\u6240\u793a\uff1a <\/p>\n\n\n\n

    \"\"<\/figure><\/div>\n\n\n\n
    1. \u8bbe\u5907<\/strong>
      \u8bbe\u5907\u4ee3\u8868USB\u8bbe\u5907\uff0c\u5b83\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u914d\u7f6e\u7ec4\u6210\u3002\u8bbe\u5907\u63cf\u8ff0\u7b26\u7528\u4e8e\u8bf4\u660e\u8bbe\u5907\u7684\u603b\u4f53\u4fe1\u606f\uff0c\u5e76\u6307\u51fa\u5176\u6240\u5305\u542b\u914d\u7f6e\u7684\u4e2a\u6570\u3002 <\/li>
    2. \u914d\u7f6e<\/strong>
      \u5728\u4f7f\u7528USB\u8bbe\u5907\u524d\uff0c\u5fc5\u987b\u4e3a\u5176\u9009\u62e9\u4e00\u4e2a\u5408\u9002\u7684\u914d\u7f6e\u3002\u5982USB\u8bbe\u5907\u7684\u4f4e\u529f\u8017\u6a21\u5f0f\u548c\u9ad8\u529f\u8017\u6a21\u5f0f\u5206\u522b\u5bf9\u5e94\u4e00\u4e2a\u914d\u7f6e\u3002\u914d\u7f6e\u63cf\u8ff0\u7b26\u7528\u4e8e\u8bf4\u660eUSB\u8bbe\u5907\u4e2d\u5404\u4e2a\u914d\u7f6e\u7684\u7279\u6027\u3002 <\/li>
    3. \u63a5\u53e3<\/strong>
      \u4e00\u4e2a\u914d\u7f6e\u53ef\u4ee5\u5305\u542b\u4e00\u4e2a\u6216\u591a\u4e2a\u63a5\u53e3\u3002\u63a5\u53e3\u662f\u4e00\u4e2a\u7aef\u70b9\u7684\u96c6\u5408\u3002\u63a5\u53e3\u63cf\u8ff0\u7b26\u7528\u4e8e\u8bf4\u660eUSB\u8bbe\u5907\u4e2d\u5404\u4e2a\u63a5\u53e3\u7684\u7279\u6027\u3002 <\/li>
    4. \u7aef\u70b9<\/strong>
      \u7aef\u70b9\u662fUSB\u8bbe\u5907\u4e2d\u7684\u5b9e\u9645\u7269\u7406\u5355\u5143\uff0cUSB\u6570\u636e\u4f20\u8f93\u5c31\u662f\u5728\u4e3b\u673a\u548cUSB\u8bbe\u5907\u5404\u4e2a\u7aef\u70b9\u4e4b\u95f4\u8fdb\u884c\u7684\u3002 <\/li>
    5. \u7ba1\u9053<\/strong>
      \u7ba1\u9053\uff0c\u662f\u4e3b\u673a\u8f6f\u4ef6(\u6570\u636e\u7f13\u51b2\u533a)\u548cUSB\u8bbe\u5907\u7684\u5404\u4e2a\u7aef\u70b9\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u94fe\u63a5\uff0c\u5b83\u662f\u4e24\u8005\u4e4b\u95f4\u901a\u4fe1\u6d41\u7684\u62bd\u8c61\u3002\u7136\u800c\uff0c\u5b9e\u9645\u7684\u6570\u636e\u4f20\u8f93\u662f\u7531USB\u603b\u7ebf\u63a5\u53e3\u5c42\u6765\u5b8c\u6210\u7684\u3002\u7ba1\u9053\u548cUSB\u8bbe\u5907\u4e2d\u7684\u7aef\u70b9\u4e00\u4e00\u5bf9\u5e94\uff0c\u5e76\u4e14\u5404\u4e2a\u7ba1\u9053\u7684\u6570\u636e\u4f20\u8f93\u662f\u76f8\u4e92\u72ec\u7acb\u7684\u3002
      \u7ba1\u9053\u6709\u4e24\u79cd\u7c7b\u578b\uff1a\u6d41\u7ba1\u9053\u548c\u6d88\u606f\u7ba1\u9053\u3002\u5176\u4e2d\u6700\u4e3a\u91cd\u8981\u7684\u6d88\u606f\u7ba1\u9053\u662f\u201c\u7f3a\u7701\u63a7\u5236\u7ba1\u9053\u201d\uff0c\u8fd9\u4e2a\u7ba1\u9053\u5728\u8bbe\u5907\u5f00\u59cb\u4e0a\u7535\u540e\u5c31\u5b58\u5728\u4e86\uff0c\u5b83\u7528\u4e8e\u63d0\u4f9b\u8bbe\u5907\u7684\u914d\u7f6e\u4e0e\u72b6\u6001\u7b49\u4fe1\u606f\u3002\u4e3b\u673a\u4e0e\u8bbe\u5907\u4e4b\u95f4\u7684\u8054\u7edc\u5c31\u662f\u901a\u8fc7\u6d88\u606f\u7ba1\u9053\u5b9e\u73b0\u7684\u3002 <\/li><\/ol>\n\n\n\n

      \u56db\u3001USB\u679a\u4e3e\u4e0e\u901a\u4fe1\u7684\u5177\u4f53\u8fc7\u7a0b<\/strong><\/h2>\n\n\n\n

      1\u3001USB\u63a5\u5934<\/strong>
      \u4e0b\u56fe\u662f\u4e00\u4e2aUSB\u63a5\u5934\u7684\u7ed3\u6784\u56fe\uff1a <\/p>\n\n\n\n

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

      \u7531\u56fe\u53ef\u4ee5\u770b\u51fa\uff0c\u6807\u51c6\u7684USB\u94fe\u63a5\u7ebf\u4f7f\u75284\u82af\u7535\u7f06\uff1a5V\u7535\u6e90\u7ebf\uff08Vbus\uff09\\\u5dee\u5206\u6570\u636e\u7ebf\u8d1f\uff08D-\uff09\u3001\u5dee\u5206\u6570\u636e\u7ebf\u6b63\uff08D+\uff09\u548c\u5730\u7ebf\uff08GND\uff09\u3002 <\/p>\n\n\n\n

      \u5728hub\u7aef\uff0c\u6570\u636e\u7ebfD+\u548cD-\u90fd\u6709\u4e00\u4e2a\u963b\u503c\u572814.25k\u523024.8k\u7684\u4e0b\u62c9\u7535\u963bRpd\uff0c\u800c\u5728\u8bbe\u5907\u7aef\uff0cD+\uff08\u5168\u901f\uff0c\u9ad8\u901f\uff09\u548cD-\uff08\u4f4e\u901f\uff09\u4e0a\u6709\u4e00\u4e2a1.5k\u7684\u4e0a\u62c9\u7535\u963bRpu\u3002\u5f53\u8bbe\u5907\u63d2\u5165\u5230hub\u7aef\u53e3\u65f6\uff0c\u6709\u4e0a\u62c9\u7535\u963b\u7684\u4e00\u6839\u6570\u636e\u7ebf\u88ab\u62c9\u9ad8\u5230\u5e45\u503c\u768490%\u7684\u7535\u538b\uff08\u5927\u81f4\u662f3V\uff09\u3002hub\u68c0\u6d4b\u5230\u5b83\u7684\u4e00\u6839\u6570\u636e\u7ebf\u662f\u9ad8\u7535\u5e73\uff0c\u5c31\u8ba4\u4e3a\u662f\u6709\u8bbe\u5907\u63d2\u5165\uff0c\u5e76\u80fd\u6839\u636e\u662fD+\u8fd8\u662fD-\u88ab\u62c9\u9ad8\u6765\u5224\u65ad\u5230\u5e95\u662f\u4ec0\u4e48\u8bbe\u5907\uff08\u5168\u901f\/\u4f4e\u901f\uff09\u63d2\u5165\u7aef\u53e3\u3002<\/p>\n\n\n\n

      2\u3001USB\u901a\u4fe1\u8fc7\u7a0b<\/strong><\/p>\n\n\n\n

      \u4e3b\u673a\u548cUSB\u8bbe\u5907\u53ef\u4ee5\u76f8\u4e92\u4f20\u8f93\u6570\u636e\uff0c\u5176\u5177\u4f53\u8fc7\u7a0b\u5982\u4e0b(\u4ee5\u4e3b\u673a\u7bb1\u8bbe\u5907\u4f20\u8f93\u4e3a\u4f8b)\uff1a <\/p>\n\n\n\n

      step1\uff1a\u5ba2\u6237\u8f6f\u4ef6\u9996\u5148\u5c06\u8981\u4f20\u8f93\u7684\u6570\u636e\u653e\u5165\u7f13\u51b2\u533a\uff0c\u540c\u65f6\u5411USB\u603b\u7ebf\u9a71\u52a8\u7a0b\u5e8f\u53d1\u51faIRPS\uff0c\u8bf7\u6c42\u6570\u636e\u4f20\u8f93\u3002\uff08\u5ba2\u6237\u8f6f\u4ef6\uff09<\/p>\n\n\n\n

      step2\uff1aUSB\u603b\u7ebf\u9a71\u52a8\u63a5\u6536\u5230\u7a0b\u5e8f\u63a5\u6536\u8bf7\u6c42\uff0c\u5e76\u5bf9\u6570\u636e\u8fdb\u884c\u5904\u7406\uff0c\u8f6c\u5316\u4e3a\u5177\u6709USB\u683c\u5f0f\u7684\u4e8b\u52a1\u5904\u7406\u3002\uff08USB\u7cfb\u7edf\u8f6f\u4ef6\uff09 <\/p>\n\n\n\n

      step3\uff1aUSB\u4e3b\u63a7\u5236\u5668\u9a71\u52a8\u7a0b\u5e8f\u5c06\u8fd9\u4e9b\u4e8b\u52a1\u5904\u7406\u5efa\u7acb\u6210\u4e8b\u52a1\u5217\u8868\uff0c\u540c\u65f6\u8981\u6c42\u4e0d\u80fd\u8d85\u8fc7USB\u5e26\u5bbd\u3002\uff08USB\u7cfb\u7edf\u8f6f\u4ef6\uff09 <\/p>\n\n\n\n

      step4\uff1aUSB\u4e3b\u63a7\u5236\u5668\u8bfb\u53d6\u5230\u4e8b\u52a1\u5217\u8868\u5e76\u5c06\u4e8b\u52a1\u8f6c\u5316\u4e3a\u4fe1\u606f\u5305\uff0c\u53d1\u9001\u5230USB\u603b\u7ebf\u4e0a\u3002\uff08USB\u603b\u7ebf\u63a5\u53e3\uff09 <\/p>\n\n\n\n

      step5\uff1aUSB\u8bbe\u5907\u6536\u5230\u8fd9\u4e9b\u4fe1\u606f\u540e\uff0cSIE(USB\u603b\u7ebf\u63a5\u53e3\u662fUSB\u8bbe\u5907\u4e2d\u7684\u4e32\u884c\u63a5\u53e3\u5f15\u64ce)\u5c06\u5176\u89e3\u5305\u540e\u653e\u5165\u6307\u5b9a\u7aef\u70b9\u7684\u63a5\u6536\u7f13\u51b2\u533a\u5185\uff0c\u7531\u82af\u7247\u56fa\u4ef6\u5bf9\u5176\u8fdb\u884c\u5904\u7406\u3002<\/p>\n\n\n\n

      \u56fe\u8868\u5c55\u793a\u5982\u4e0b\uff1a<\/p>\n\n\n\n

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

      3\u3001USB\u679a\u4e3e\u901a\u4fe1\u5177\u4f53\u8fc7\u7a0b<\/strong><\/p>\n\n\n\n

      \u679a\u4e3e\u5c31\u662f\u4ece\u8bbe\u5907\u8bfb\u53d6\u4e00\u4e9b\u4fe1\u606f\uff0c\u77e5\u9053\u8bbe\u5907\u662f\u4ec0\u4e48\u6837\u7684\u8bbe\u5907\uff0c\u5982\u4f55\u8fdb\u884c\u901a\u4fe1\uff0c\u8fd9\u6837\u4e3b\u673a\u5c31\u53ef\u4ee5\u6839\u636e\u8fd9\u4e9b\u4fe1\u606f\u6765\u52a0\u8f7d\u5408\u9002\u7684\u9a71\u52a8\u7a0b\u5e8f\u3002\u8c03\u8bd5USB\u8bbe\u5907\uff0c\u5f88\u91cd\u8981\u7684\u4e00\u70b9\u5c31\u662fUSB\u7684\u679a\u4e3e\u8fc7\u7a0b\uff0c\u53ea\u8981\u679a\u4e3e\u6210\u529f\u4e86\uff0c\u90a3\u4e48\u5c31\u5df2\u7ecf\u6210\u529f\u5927\u534a\u4e86\u3002 <\/p>\n\n\n\n

      \u679a\u4e3e\u901a\u4fe1\u8fc7\u7a0b\u5177\u4f53\u5982\u4e0b\uff1a <\/strong><\/p>\n\n\n\n

      Step1\uff1a\u68c0\u6d4b\u7535\u538b\u53d8\u5316\uff0c\u62a5\u544a\u4e3b\u673a <\/strong>
      \u9996\u5148\uff0cUSB\u8bbe\u5907\u4e0a\u7535\u540e\uff0c\u4e00\u76f4\u76d1\u6d4bUSB\u8bbe\u5907\u63a5\u53e3\u7535\u5e73\u53d8\u5316HUB\u68c0\u6d4b\u5230\u6709\u7535\u538b\u53d8\u5316\uff0c\u5c06\u5229\u7528\u81ea\u5df1\u7684\u4e2d\u65ad\u7aef\u70b9\u5c06\u4fe1\u606f\u53cd\u9988\u7ed9\u4e3b\u63a7\u5236\u5668\u6709\u8bbe\u5907\u8fde\u63a5\u3002 <\/p>\n\n\n\n

      Step2\uff1a\u4e3b\u673a\u4e86\u89e3\u8fde\u63a5\u8bbe\u5907<\/strong>
      \u4e3b\u673a\u5728\u77e5\u9053\u6709\u8bbe\u5907\u63a5\u5165\u540e\u4f1a\u53d1\u9001\u4e00\u4e2aGet_Port_Status\u8bf7\u6c42(request)\u7ed9hub\u4ee5\u4e86\u89e3\u6b64\u6b21\u72b6\u6001\u6539\u53d8\u7684\u786e\u5207\u542b\u4e49\u3002 <\/p>\n\n\n\n

      Step3\uff1aHub\u68c0\u6d4b\u6240\u63d2\u5165\u7684\u8bbe\u5907\u662f\u9ad8\u901f\u8fd8\u662f\u4f4e\u901f<\/strong>
      hub\u901a\u8fc7\u68c0\u6d4bUSB\u603b\u7ebf\u7a7a\u95f2(Idle)\u65f6\u5dee\u5206\u7ebf\u7684\u9ad8\u4f4e\u7535\u538b\u6765\u5224\u65ad\u6240\u8fde\u63a5\u8bbe\u5907\u7684\u901f\u5ea6\u7c7b\u578b\uff0c\u5f53host\u53d1\u6765Get_Port_Status\u8bf7\u6c42\u65f6\uff0chub\u5c31\u53ef\u4ee5\u5c06\u6b64\u8bbe\u5907\u7684\u901f\u5ea6\u7c7b\u578b\u4fe1\u606f\u56de\u590d\u7ed9host\u3002USB 2.0\u89c4\u8303\u8981\u6c42\u901f\u5ea6\u68c0\u6d4b\u8981\u5148\u4e8e\u590d\u4f4d\uff08Reset\uff09\u64cd\u4f5c\u3002 <\/p>\n\n\n\n

      Step4\uff1ahub\u590d\u4f4d\u8bbe\u5907<\/strong>
      \u4e3b\u673a\u4e00\u65e6\u5f97\u77e5\u65b0\u8bbe\u5907\u5df2\u8fde\u4e0a\u4ee5\u540e\uff0c\u5b83\u81f3\u5c11\u7b49\u5f85100ms\u4ee5\u4f7f\u5f97\u63d2\u5165\u64cd\u4f5c\u7684\u5b8c\u6210\u4ee5\u53ca\u8bbe\u5907\u7535\u6e90\u7a33\u5b9a\u5de5\u4f5c\u3002\u7136\u540e\u4e3b\u673a\u63a7\u5236\u5668\u5c31\u5411hub\u53d1\u51fa\u4e00\u4e2a Set_Port_Feature\u8bf7\u6c42\u8ba9hub\u590d\u4f4d\u5176\u7ba1\u7406\u7684\u7aef\u53e3(\u521a\u624d\u8bbe\u5907\u63d2\u4e0a\u7684\u7aef\u53e3)\u3002hub\u901a\u8fc7\u9a71\u52a8\u6570\u636e\u7ebf\u5230\u590d\u4f4d\u72b6\u6001(D+\u548cD-\u5168\u4e3a\u4f4e\u7535\u5e73 )\uff0c\u5e76\u6301\u7eed\u81f3\u5c1110ms\u3002\u5f53\u7136\uff0chub\u4e0d\u4f1a\u628a\u8fd9\u6837\u7684\u590d\u4f4d\u4fe1\u53f7\u53d1\u9001\u7ed9\u5176\u4ed6\u5df2\u6709\u8bbe\u5907\u8fde\u63a5\u7684\u7aef\u53e3\uff0c\u6240\u4ee5\u5176\u4ed6\u8fde\u5728\u8be5hub\u4e0a\u7684\u8bbe\u5907\u81ea\u7136\u770b\u4e0d\u5230\u590d\u4f4d\u4fe1\u53f7\uff0c\u4e0d\u53d7\u5f71\u54cd\u3002 <\/p>\n\n\n\n

      Step5\uff1a Host\u68c0\u6d4b\u6240\u8fde\u63a5\u7684\u5168\u901f\u8bbe\u5907\u662f\u5426\u662f\u652f\u6301\u9ad8\u901f\u6a21\u5f0f<\/strong>
      \u56e0\u4e3a\u6839\u636eUSB 2.0\u534f\u8bae\uff0c\u9ad8\u901f\uff08High Speed\uff09\u8bbe\u5907\u5728\u521d\u59cb\u65f6\u662f\u9ed8\u8ba4\u5168\u901f\uff08Full Speed \uff09\u72b6\u6001\u8fd0\u884c\uff0c\u6240\u4ee5\u5bf9\u4e8e\u4e00\u4e2a\u652f\u6301USB 2.0\u7684\u9ad8\u901fhub\uff0c\u5f53\u5b83\u53d1\u73b0\u5b83\u7684\u7aef\u53e3\u8fde\u63a5\u7684\u662f\u4e00\u4e2a\u5168\u901f\u8bbe\u5907\u65f6\uff0c\u4f1a\u8fdb\u884c\u9ad8\u901f\u68c0\u6d4b\uff0c\u770b\u770b\u76ee\u524d\u8fd9\u4e2a\u8bbe\u5907\u662f\u5426\u8fd8\u652f\u6301\u9ad8\u901f\u4f20\u8f93\uff0c\u5982\u679c\u662f\uff0c\u90a3\u5c31\u5207\u5230\u9ad8\u901f\u4fe1\u53f7\u6a21\u5f0f\uff0c\u5426\u5219\u5c31\u4e00\u76f4\u5728\u5168\u901f\u72b6\u6001\u4e0b\u5de5\u4f5c\u3002
          \u540c\u6837\u7684\uff0c\u4ece\u8bbe\u5907\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u5982\u679c\u662f\u4e00\u4e2a\u9ad8\u901f\u8bbe\u5907\uff0c\u5728\u521a\u8fde\u63a5bub\u6216\u4e0a\u7535\u65f6\u53ea\u80fd\u7528\u5168\u901f\u4fe1\u53f7\u6a21\u5f0f\u8fd0\u884c\uff08\u6839\u636eUSB 2.0\u534f\u8bae\uff0c\u9ad8\u901f\u8bbe\u5907\u5fc5\u987b\u5411\u4e0b\u517c\u5bb9USB 1.1\u7684\u5168\u901f\u6a21\u5f0f\uff09\u3002\u968f\u540ehub\u4f1a\u8fdb\u884c\u9ad8\u901f\u68c0\u6d4b\uff0c\u4e4b\u540e\u8fd9\u4e2a\u8bbe\u5907\u624d\u4f1a\u5207\u6362\u5230\u9ad8\u901f\u6a21\u5f0f\u4e0b\u5de5\u4f5c\u3002\u5047\u5982\u6240\u8fde\u63a5\u7684hub\u4e0d\u652f\u6301USB 2.0\uff0c\u5373\u4e0d\u662f\u9ad8\u901fhub\uff0c\u4e0d\u80fd\u8fdb\u884c\u9ad8\u901f\u68c0\u6d4b\uff0c\u8bbe\u5907\u5c06\u4e00\u76f4\u4ee5\u5168\u901f\u5de5\u4f5c\u3002 <\/p>\n\n\n\n

      Step6\uff1aHub\u5efa\u7acb\u8bbe\u5907\u548c\u4e3b\u673a\u4e4b\u95f4\u7684\u4fe1\u606f\u901a\u9053<\/strong>
      \u4e3b\u673a\u4e0d\u505c\u5730\u5411hub\u53d1\u9001Get_Port_Status\u8bf7\u6c42\uff0c\u4ee5\u67e5\u8be2\u8bbe\u5907\u662f\u5426\u590d\u4f4d\u6210\u529f\u3002Hub\u8fd4\u56de\u7684\u62a5\u544a\u4fe1\u606f\u4e2d\u6709\u4e13\u95e8\u7684\u4e00\u4f4d\u7528\u6765\u6807\u5fd7\u8bbe\u5907\u7684\u590d\u4f4d\u72b6\u6001\u3002
             \u5f53hub\u64a4\u9500\u4e86\u590d\u4f4d\u4fe1\u53f7\uff0c\u8bbe\u5907\u5c31\u5904\u4e8e\u9ed8\u8ba4\uff0f\u7a7a\u95f2\u72b6\u6001\uff08Default state\uff09\uff0c\u51c6\u5907\u63a5\u6536\u4e3b\u673a\u53d1\u6765\u7684\u8bf7\u6c42\u3002\u8bbe\u5907\u548c\u4e3b\u673a\u4e4b\u95f4\u7684\u901a\u4fe1\u901a\u8fc7\u63a7\u5236\u4f20\u8f93\uff0c\u9ed8\u8ba4\u5730\u57400\uff0c\u7aef\u70b9\u53f70\u8fdb\u884c\u3002\u6b64\u65f6\uff0c\u8bbe\u5907\u80fd\u4ece\u603b\u7ebf\u4e0a\u5f97\u5230\u7684\u6700\u5927\u7535\u6d41\u662f100mA\u3002(\u6240\u6709\u7684USB\u8bbe\u5907\u5728\u603b\u7ebf\u590d\u4f4d\u540e\u5176\u5730\u5740\u90fd\u4e3a0\uff0c\u8fd9\u6837\u4e3b\u673a\u5c31\u53ef\u4ee5\u8ddf\u90a3\u4e9b\u521a\u521a\u63d2\u5165\u7684\u8bbe\u5907\u901a\u8fc7\u5730\u57400\u901a\u4fe1\u3002) <\/p>\n\n\n\n

      Step7\uff1a\u4e3b\u673a\u53d1\u9001Get_Descriptor\u8bf7\u6c42\u83b7\u53d6\u9ed8\u8ba4\u7ba1\u9053\u7684\u6700\u5927\u5305\u957f\u5ea6<\/strong>
      \u9ed8\u8ba4\u7ba1\u9053\uff08Default Pipe\uff09\u5728\u8bbe\u5907\u4e00\u7aef\u6765\u770b\u5c31\u662f\u7aef\u70b90\u3002\u4e3b\u673a\u6b64\u65f6\u53d1\u9001\u7684\u8bf7\u6c42\u662f\u9ed8\u8ba4\u5730\u57400\uff0c\u7aef\u70b90\uff0c\u867d\u7136\u6240\u6709\u672a\u5206\u914d\u5730\u5740\u7684\u8bbe\u5907\u90fd\u662f\u901a\u8fc7\u5730\u57400\u6765\u83b7\u53d6\u4e3b\u673a\u53d1\u6765\u7684\u8bf7\u6c42\uff0c\u4f46\u7531\u4e8e\u679a\u4e3e\u8fc7\u7a0b\u4e0d\u662f\u591a\u4e2a\u8bbe\u5907\u5e76\u884c\u5904\u7406\uff0c\u800c\u662f\u4e00\u6b21\u679a\u4e3e\u4e00\u4e2a\u8bbe\u5907\u7684\u65b9\u5f0f\u8fdb\u884c\uff0c\u6240\u4ee5\u4e0d\u4f1a\u53d1\u751f\u591a\u4e2a\u8bbe\u5907\u540c\u65f6\u54cd\u5e94\u4e3b\u673a\u53d1\u6765\u7684\u8bf7\u6c42\u3002
            \u8bbe\u5907\u63cf\u8ff0\u7b26\u7684\u7b2c8\u5b57\u8282\u4ee3\u8868\u8bbe\u5907\u7aef\u70b90\u7684\u6700\u5927\u5305\u5927\u5c0f\u3002\u867d\u7136\u8bf4\u8bbe\u5907\u6240\u8fd4\u56de\u7684\u8bbe\u5907\u63cf\u8ff0\u7b26\uff08Device Descriptor\uff09\u957f\u5ea6\u53ea\u670918\u5b57\u8282\uff0c\u4f46\u7cfb\u7edf\u4e5f\u4e0d\u5728\u4e4e\uff0c\u6b64\u65f6\uff0c\u63cf\u8ff0\u7b26\u7684\u957f\u5ea6\u4fe1\u606f\u5bf9\u5b83\u6765\u8bf4\u662f\u6700\u91cd\u8981\u7684\uff0c\u5176\u4ed6\u7684\u7784\u4e00\u773c\u5c31\u8fc7\u4e86\u3002\u5f53\u5b8c\u6210\u7b2c\u4e00\u6b21\u7684\u63a7\u5236\u4f20\u8f93\u540e\uff0c\u4e5f\u5c31\u662f\u5b8c\u6210\u63a7\u5236\u4f20\u8f93\u7684\u72b6\u6001\u9636\u6bb5\uff0c\u7cfb\u7edf\u4f1a\u8981\u6c42hub\u5bf9\u8bbe\u5907\u8fdb\u884c\u518d\u4e00\u6b21\u7684\u590d\u4f4d\u64cd\u4f5c\uff08USB\u89c4\u8303\u91cc\u9762\u53ef\u6ca1\u8fd9\u8981\u6c42\uff09\u3002\u518d\u6b21\u590d\u4f4d\u7684\u76ee\u7684\u662f\u4f7f\u8bbe\u5907\u8fdb\u5165\u4e00\u4e2a\u786e\u5b9a\u7684\u72b6\u6001\u3002 <\/p>\n\n\n\n

      Step8\uff1a\u4e3b\u673a\u7ed9\u8bbe\u5907\u5206\u914d\u4e00\u4e2a\u5730\u5740<\/strong>
      \u4e3b\u673a\u63a7\u5236\u5668\u901a\u8fc7Set_Address\u8bf7\u6c42\u5411\u8bbe\u5907\u5206\u914d\u4e00\u4e2a\u552f\u4e00\u7684\u5730\u5740\u3002\u5728\u5b8c\u6210\u8fd9\u6b21\u4f20\u8f93\u4e4b\u540e\uff0c\u8bbe\u5907\u8fdb\u5165\u5730\u5740\u72b6\u6001\uff08Address state\uff09\uff0c\u4e4b\u540e\u5c31\u542f\u7528\u65b0\u5730\u5740\u7ee7\u7eed\u4e0e\u4e3b\u673a\u901a\u4fe1\u3002\u8fd9\u4e2a\u5730\u5740\u5bf9\u4e8e\u8bbe\u5907\u6765\u8bf4\u662f\u7ec8\u751f\u5236\u7684\uff0c\u8bbe\u5907\u5728\uff0c\u5730\u5740\u5728\uff1b\u8bbe\u5907\u6d88\u5931\uff08\u88ab\u62d4\u51fa\uff0c\u590d\u4f4d\uff0c\u7cfb\u7edf\u91cd\u542f\uff09\uff0c\u5730\u5740\u88ab\u6536\u56de\u3002\u540c\u4e00\u4e2a\u8bbe\u5907\u5f53\u518d\u6b21\u88ab\u679a\u4e3e\u540e\u5f97\u5230\u7684\u5730\u5740\u4e0d\u4e00\u5b9a\u662f\u4e0a\u6b21\u90a3\u4e2a\u4e86\u3002 <\/p>\n\n\n\n

      Step9\uff1a\u4e3b\u673a\u83b7\u53d6\u8bbe\u5907\u7684\u4fe1\u606f<\/strong>
      \u4e3b\u673a\u53d1\u9001 Get_Descriptor\u8bf7\u6c42\u5230\u65b0\u5730\u5740\u8bfb\u53d6\u8bbe\u5907\u63cf\u8ff0\u7b26\uff0c\u8fd9\u6b21\u4e3b\u673a\u53d1\u9001Get_Descriptor\u8bf7\u6c42\u53ef\u7b97\u662f\u8bda\u5fc3\uff0c\u5b83\u4f1a\u8ba4\u771f\u89e3\u6790\u8bbe\u5907\u63cf\u8ff0\u7b26\u7684\u5185\u5bb9\u3002\u8bbe\u5907\u63cf\u8ff0\u7b26\u5185\u4fe1\u606f\u5305\u62ec\u7aef\u70b90\u7684\u6700\u5927\u5305\u957f\u5ea6\uff0c\u8bbe\u5907\u6240\u652f\u6301\u7684\u914d\u7f6e\uff08Configuration\uff09\u4e2a\u6570\uff0c\u8bbe\u5907\u7c7b\u578b\uff0cVID\uff08Vendor ID\uff0c\u7531USB-IF\u5206\u914d\uff09\uff0c PID\uff08Product ID\uff0c\u7531\u5382\u5546\u81ea\u5df1\u5b9a\u5236\uff09\u7b49\u4fe1\u606f\u3002
          \u4e4b\u540e\u4e3b\u673a\u53d1\u9001Get_Descriptor\u8bf7\u6c42\uff0c\u8bfb\u53d6\u914d\u7f6e\u63cf\u8ff0\u7b26\uff08Configuration Descriptor\uff09\uff0c\u5b57\u7b26\u4e32\u7b49\uff0c\u9010\u4e00\u4e86\u89e3\u8bbe\u5907\u66f4\u8be6\u7ec6\u7684\u4fe1\u606f\u3002\u4e8b\u5b9e\u4e0a\uff0c\u5bf9\u4e8e\u914d\u7f6e\u63cf\u8ff0\u7b26\u7684\u6807\u51c6\u8bf7\u6c42\u4e2d\uff0c\u6709\u65f6wLength\u4e00\u9879\u4f1a\u5927\u4e8e\u5b9e\u9645\u914d\u7f6e\u63cf\u8ff0\u7b26\u7684\u957f\u5ea6\uff089\u5b57\u8282\uff09\uff0c\u6bd4\u5982255\u3002\u8fd9\u6837\u7684\u6548\u679c\u4fbf\u662f\uff1a\u4e3b\u673a\u53d1\u9001\u4e86\u4e00\u4e2aGet_Descriptor_Configuration \u7684\u8bf7\u6c42\uff0c\u8bbe\u5907\u4f1a\u628a\u63a5\u53e3\u63cf\u8ff0\u7b26\uff0c\u7aef\u70b9\u63cf\u8ff0\u7b26\u7b49\u540e\u7eed\u63cf\u8ff0\u7b26\u4e00\u5e76\u56de\u7ed9\u4e3b\u673a\uff0c\u4e3b\u673a\u5219\u6839\u636e\u63cf\u8ff0\u7b26\u5934\u90e8\u7684\u6807\u5fd7\u5224\u65ad\u9001\u4e0a\u6765\u7684\u5177\u4f53\u662f\u4f55\u79cd\u63cf\u8ff0\u7b26\u3002
            \u63a5\u4e0b\u6765\uff0c\u4e3b\u673a\u5c31\u4f1a\u83b7\u53d6\u914d\u7f6e\u63cf\u8ff0\u7b26\u3002\u914d\u7f6e\u63cf\u8ff0\u7b26\u603b\u5171\u4e3a9\u5b57\u8282\u3002\u4e3b\u673a\u5728\u83b7\u53d6\u5230\u914d\u7f6e\u63cf\u8ff0\u7b26\u540e\uff0c\u6839\u636e\u91cc\u9762\u7684\u914d\u7f6e\u96c6\u5408\u603b\u957f\u5ea6\uff0c\u518d\u83b7\u53d6\u914d\u7f6e\u96c6\u5408\u3002\u914d\u7f6e\u96c6\u5408\u5305\u62ec\u914d\u7f6e\u63cf\u8ff0\u7b26\uff0c\u63a5\u53e3\u63cf\u8ff0\u7b26\uff0c\u7aef\u70b9\u63cf\u7b26\u7b49\u7b49\u3002
           \u5982\u679c\u6709\u5b57\u7b26\u4e32\u63cf\u8ff0\u7b26\u7684\u8bdd\uff0c\u8fd8\u8981\u83b7\u53d6\u5b57\u7b26\u4e32\u63cf\u8ff0\u7b26\u3002\u53e6\u5916HID\u8bbe\u5907\u8fd8\u6709HID\u63cf\u8ff0\u7b26\u7b49\u3002 <\/p>\n\n\n\n

      Step10\uff1a<\/strong> \u4e3b\u673a\u7ed9\u8bbe\u5907\u6302\u8f7d\u9a71\u52a8\uff08\u590d\u5408\u8bbe\u5907\u9664\u5916\uff09<\/strong>
      \u4e3b\u673a\u901a\u8fc7\u89e3\u6790\u63cf\u8ff0\u7b26\u540e\u5bf9\u8bbe\u5907\u6709\u4e86\u8db3\u591f\u7684\u4e86\u89e3\uff0c\u4f1a\u9009\u62e9\u4e00\u4e2a\u6700\u5408\u9002\u7684\u9a71\u52a8\u7ed9\u8bbe\u5907\u3002  \u7136\u540etell the world\uff08announce_device\uff09\u8bf4\u660e\u8bbe\u5907\u5df2\u7ecf\u627e\u5230\u4e86\uff0c\u6700\u540e\u8c03\u7528\u8bbe\u5907\u6a21\u578b\u63d0\u4f9b\u7684\u63a5\u53e3device_add\u5c06\u8bbe\u5907\u6dfb\u52a0\u5230 usb \u603b\u7ebf\u7684\u8bbe\u5907\u5217\u8868\u91cc\uff0c\u7136\u540e usb\u603b\u7ebf\u4f1a\u904d\u5386\u9a71\u52a8\u5217\u8868\u91cc\u7684\u6bcf\u4e2a\u9a71\u52a8\uff0c\u8c03\u7528\u81ea\u5df1\u7684 match\uff08usb_device_match\uff09 \u51fd\u6570\u770b\u5b83\u4eec\u548c\u4f60\u7684\u8bbe\u5907\u6216\u63a5\u53e3\u662f\u5426\u5339\u914d\uff0c\u5339\u914d\u7684\u8bdd\u8c03\u7528device_bind_driver\u51fd\u6570\uff0c\u73b0\u5728\u5c31\u5c06\u63a7\u5236\u6743\u4ea4\u5230\u8bbe\u5907\u9a71\u52a8\u4e86\u3002   
           \u5bf9\u4e8e\u590d\u5408\u8bbe\u5907\uff0c\u901a\u5e38\u5e94\u8be5\u662f\u4e0d\u540c\u7684\u63a5\u53e3\uff08Interface\uff09\u914d\u7f6e\u7ed9\u4e0d\u540c\u7684\u9a71\u52a8\uff0c\u56e0\u6b64\uff0c\u9700\u8981\u7b49\u5230\u5f53\u8bbe\u5907\u88ab\u914d\u7f6e\u5e76\u628a\u63a5\u53e3\u4f7f\u80fd\u540e\u624d\u53ef\u4ee5\u628a\u9a71\u52a8\u6302\u8f7d\u4e0a\u53bb\u3002 <\/p>\n\n\n\n

      Step11\uff1a\u8bbe\u5907\u9a71\u52a8\u9009\u62e9\u4e00\u4e2a\u914d\u7f6e<\/strong>
      \u9a71\u52a8\uff08\u6ce8\u610f\uff0c\u8fd9\u91cc\u662f\u9a71\u52a8\uff0c\u4e4b\u540e\u7684\u4e8b\u60c5\u90fd\u662f\u6709\u9a71\u52a8\u6765\u63a5\u7ba1\u8d1f\u8d23\u4e0e\u8bbe\u5907\u7684\u901a\u4fe1\uff09\u6839\u636e\u524d\u9762\u8bbe\u5907\u56de\u590d\u7684\u4fe1\u606f\uff0c\u53d1\u9001Set_Configuration\u8bf7\u6c42\u6765\u6b63\u5f0f\u786e\u5b9a\u9009\u62e9\u8bbe\u5907\u7684\u54ea\u4e2a\u914d\u7f6e\uff08Configuration\uff09\u4f5c\u4e3a\u5de5\u4f5c\u914d\u7f6e\uff08\u5bf9\u4e8e\u5927\u591a\u6570\u8bbe\u5907\u6765\u8bf4\uff0c\u4e00\u822c\u53ea\u6709\u4e00\u4e2a\u914d\u7f6e\u88ab\u5b9a\u4e49\uff09\u3002\u81f3\u6b64\uff0c\u8bbe\u5907\u5904\u4e8e\u914d\u7f6e\u72b6\u6001(Configured)\uff0c\u5f53\u7136\uff0c\u8bbe\u5907\u4e5f\u5e94\u8be5\u4f7f\u80fd\u5b83\u7684\u5404\u4e2a\u63a5\u53e3\uff08Interface\uff09\u3002
          \u5bf9\u4e8e\u590d\u5408\u8bbe\u5907\uff0c\u4e3b\u673a\u4f1a\u5728\u8fd9\u4e2a\u65f6\u5019\u6839\u636e\u8bbe\u5907\u63a5\u53e3\u4fe1\u606f\uff0c\u7ed9\u5b83\u4eec\u6302\u8f7d\u9a71\u52a8\u3002 <\/p>\n\n\n\n

      <\/p>\n","protected":false},"excerpt":{"rendered":"

      USB\u901a\u8baf\u8fc7\u7a0b\uff1bUSB\u7cfb\u7edf\u662f\u7531\u4e09\u4e2a\u903b\u8f91\u5c42\u7ec4\u6210\uff1a\u529f\u80fd\u5c42\u3001USB\u8bbe\u5907\u5c42\u548cUSB\u603b\u7ebf\u63a5\u53e3\u5c42\u3002\u5e76\u4e14\u6bcf\u4e00\u5c42\u90fd\u662f\u7531\u4e3b\u673a\u548cUSB\u8bbe\u5907\u4e0d\u540c\u7684\u529f\u80fd\u6a21\u5757\u7ec4\u6210<\/p>\n","protected":false},"author":1,"featured_media":834,"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\/844"}],"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=844"}],"version-history":[{"count":9,"href":"http:\/\/iqotom.com\/index.php?rest_route=\/wp\/v2\/posts\/844\/revisions"}],"predecessor-version":[{"id":958,"href":"http:\/\/iqotom.com\/index.php?rest_route=\/wp\/v2\/posts\/844\/revisions\/958"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/iqotom.com\/index.php?rest_route=\/wp\/v2\/media\/834"}],"wp:attachment":[{"href":"http:\/\/iqotom.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/iqotom.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=844"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/iqotom.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}