{"id":2113,"date":"2017-02-20T18:49:13","date_gmt":"2017-02-20T10:49:13","guid":{"rendered":"http:\/\/www.51cos.com\/?p=2113"},"modified":"2017-02-20T18:49:13","modified_gmt":"2017-02-20T10:49:13","slug":"%e5%a4%96%e5%9b%b4%e7%a1%ac%e4%bb%b6%e5%92%8candroid%e6%89%8b%e6%9c%ba%e9%80%9a%e8%bf%87aoa%e5%8d%8f%e8%ae%ae%e8%bf%9b%e8%a1%8c%e6%95%b0%e6%8d%ae%e4%bc%a0%e8%be%93%e7%9a%84%e5%ae%9e%e7%8e%b0%e6%96%b9","status":"publish","type":"post","link":"http:\/\/www.51cos.com\/?p=2113","title":{"rendered":"\u5916\u56f4\u786c\u4ef6\u548cAndroid\u624b\u673a\u901a\u8fc7AOA\u534f\u8bae\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u7684\u5b9e\u73b0\u65b9\u6cd5"},"content":{"rendered":"<p>Android\u624b\u673aUSB\u89d2\u8272\u6709\u4e24\u79cd\uff0c<\/p>\n<p>\u4e00\u662f\u505aHost\uff0c\u9a71\u52a8\u5916\u9762\u7684\u786c\u4ef6\u8bbe\u5907\uff0c\u5bf9\u5916\u4f9b\u7535\uff1b<br \/>\n\u4e00\u662f\u505adevice\uff0c\u88ab\u5916\u90e8\u8bbe\u5907\u5145\u7535\uff0c\u540c\u65f6\u53ef\u4ee5\u5229\u7528AOA\uff08Android Open Accessory\uff09\u534f\u8bae\u4e0e\u5916\u9762\u8bbe\u5907\u8fdb\u884c\u6570\u636e\u4ea4\u4e92\u3002<\/p>\n<p>\u5728\u6570\u636e\u901a\u4fe1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u5916\u90e8\u786c\u4ef6\u901a\u8fc7libusb\u5e93\uff0c\u9996\u5148\u83b7\u5f97USB\u8fde\u63a5\u4e2d\u7684\u4e00\u4e9b\u914d\u7f6e\u5143\u6570\u636e\uff0c\u5305\u62ec\u63a5\u53e3\u7c7b\u578b\uff08UsbInterface\uff09\uff0c\u7aef\u70b9\u4fe1\u606f\uff08UsbEndpoint\uff09\u7b49\uff0c\u548c\u5bf9\u5e94\u7684bulk endpoints\u8fdb\u884c\u4e4b\u540e\u7684\u901a\u4fe1\u8fc7\u7a0b\u3002\u8fdb\u800c\u5229\u7528\u63d0\u4f9b\u7684libusb_control_transfer\u548clibusb_bulk_transfer\u63a5\u53e3\u8fdb\u884c\u6570\u636e\u7684\u4f20\u8f93\uff0c\u5176\u4e2d\uff0clibusb_control_transfer\u7528\u4e8e\u4f20\u8f93\u4e00\u4e9b\u6307\u4ee4\u6570\u636e\uff0c\u800clibusb_bulk_transfer\u7528\u4e8e\u4f20\u8f93\u4e00\u4e9b\u6bd4\u8f83\u5927\u7684\u6570\u636e\uff0c\u6bd4\u5982\u97f3\u9891\u6570\u636e\uff0c\u56fe\u50cf\u6570\u636e\u7b49\uff1b \u800c\u5b89\u5353\u624b\u673a\u5219\u901a\u8fc7Android USBManager\u63d0\u4f9b\u7684openAccessory\u63a5\u53e3\u83b7\u5f97\u4e00\u4e2a\u6587\u4ef6\u63cf\u8ff0\u7b26\uff0c\u7136\u540e\u901a\u8fc7\u5176\u5bf9\u5e94\u7684FileInputStream\u548cFileOutputStream\u8fdb\u884c\u6570\u636e\u7684\u8bfb\u5199\uff1a<\/p>\n<pre class=\"prettyprint linenums\" >\nParcelFileDescriptor mFD = mUSBManager.openAccessory(acc);<br \/>\nif (mFD != null) {<br \/>\n    FileDescripter fd = mFD.getFileDescriptor();<br \/>\n    mIS = new FileInputStream(fd);  \/\/ use this to receive messages<br \/>\n    mOS = new FileOutputStream(fd); \/\/ use this to send commands<br \/>\n}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Android\u624b\u673aUSB\u89d2\u8272\u6709\u4e24\u79cd\uff0c \u4e00\u662f\u505aHost\uff0c\u9a71\u52a8\u5916\u9762\u7684\u786c\u4ef6\u8bbe\u5907\uff0c\u5bf9\u5916\u4f9b\u7535\uff1b \u4e00\u662f\u505adevice\uff0c\u88ab\u5916 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-2113","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/2113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2113"}],"version-history":[{"count":1,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/2113\/revisions"}],"predecessor-version":[{"id":2114,"href":"http:\/\/www.51cos.com\/index.php?rest_route=\/wp\/v2\/posts\/2113\/revisions\/2114"}],"wp:attachment":[{"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2113"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.51cos.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}