{"id":396,"date":"2016-10-11T16:47:39","date_gmt":"2016-10-11T08:47:39","guid":{"rendered":"http:\/\/www.freezhongzi.info\/?p=396"},"modified":"2019-09-29T09:14:59","modified_gmt":"2019-09-29T01:14:59","slug":"usb%e6%b6%b2%e6%99%b6%e5%b1%8ffor%e6%a0%91%e8%8e%93%e6%b4%be","status":"publish","type":"post","link":"https:\/\/bl4kraven.com\/index.php\/2016\/10\/11\/usb%e6%b6%b2%e6%99%b6%e5%b1%8ffor%e6%a0%91%e8%8e%93%e6%b4%be\/","title":{"rendered":"USB\u6db2\u6676\u5c4ffor\u6811\u8393\u6d3e"},"content":{"rendered":"

\u524d\u5e8f<\/strong><\/p>\n

\u81ea\u4ece\u5165\u624b\u6811\u8393\u6d3e\u4e00\u4ee3\uff0c\u4e00\u76f4\u95f2\u7f6e\u7740\u3002\u73b0\u5728\u6811\u8393\u6d3e\u90fd\u4e8c\u4ee3\u4e86\uff0c\u518d\u4e0d\u73a9\u73a9\u5c31\u5f7b\u5e95\u5403\u7070\u4e86\u3002\u53ef\u60dc\u7684\u662f\u6811\u8393\u6d3e\u6ca1\u63a5\u663e\u793a\u5668\u603b\u5f52\u4e0d\u597d\u73a9\u3002<\/p>\n

\u6211\u624b\u5934\u6709\u4e00\u4e2aAtmel A5(SAMA5D3)\u7684ARM\u677f\u5b50\uff0c\u81ea\u5e26TFT-LCD\u7535\u5bb9\u89e6\u6478\u6db2\u6676\u5c4f\u548cUSB\u63a5\u53e3\uff0c\u521a\u597d\u4f5c\u4e3a\u6811\u8393\u6d3e1\u4ee3\u7684\u663e\u793a\u5668\uff0c\u4e24\u8005\u4e4b\u95f4\u7528 USB\u4f20\u8f93\u56fe\u50cf\u6570\u636e\uff08\u4e0d\u6c42\u6027\u80fd\uff0c\u80fd\u663e\u793a\u5c31\u884c\uff09\u3002<\/p>\n

\u51c6\u5907\u5c31\u7eea\u5c31\u7f3a\u5b9e\u73b0\u65b9\u6848\u4e86\uff0c\u7a81\u7136\u60f3\u8d77RoboPeak<\/a>\u6709\u4e00\u4e2a\u6811\u8393\u6d3e\u7684\u6db2\u6676\u5c4f<\/a>\u5728\u5356,\u800c\u4e14\u5f00\u6e90\u6811\u8393\u6d3e\u7aef\u7684\u9a71\u52a8<\/a>\u548c\u534f\u8bae\uff0c\u90a3\u6211\u5c31\u5145\u5206\u53d1\u6325\u5f00\u6e90\u4f18\u52bf\uff0c\u5728\u8fd9\u4e2a\u57fa\u7840\u4e0a\u6539\u3002<\/p>\n

\u8fd9\u5c31\u6d89\u53ca\u5230\u4e24\u4e2aUSB\u9a71\u52a8\uff1a<\/p>\n

    \n
  1. ARM\u6db2\u6676\u5c4f\u7684USB gadget\u9a71\u52a8:\u9879\u76ee\u5728\u8fd9\u91cc<\/a><\/li>\n
  2. \u6811\u8393\u6d3e\u7684USB HOST\u9a71\u52a8:\u9996\u5148\u5237RoboPeak\u7684\u6811\u8393\u6d3e\u56fa\u4ef6\uff0c\u91cd\u65b0\u7f16\u8bd1\u6811\u8393\u6d3e\u7684Linux kernel, \u7f16\u8bd1\u4fee\u6539\u539f\u6765\u7684RoboPeak\u7684\u5f00\u6e90\u6811\u8393\u6d3e\u9a71\u52a8\u3002\u6700\u540e\u6539\u597d\u7684\u9a71\u52a8\u9879\u76ee\u5728\u8fd9\u91cc<\/a><\/li>\n<\/ol>\n

    \u5728\u7814\u7a76kernel\u7684USB gadget\u9a71\u52a8\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u4e86\u4e00\u4e2aUSB\u534f\u8bae\u8be6\u89e3\u7f51\u7ad9<\/a>\uff0c\u5f53\u7136USB\u534f\u8bae\u6587\u6863\u4e5f\u5fc5\u4e0d\u53ef\u5c11\uff0c\u5f00\u53d1\u9a71\u52a8\u7684\u8bdd\u5355\u5355\u770b\u7b2c9\u7ae0\u5c31\u884c\u4e86\u3002<\/p>\n

    \u5b9e\u73b0\u539f\u7406<\/strong><\/p>\n

    \u8fd9\u91cc\u53ea\u8bf4gadget\u9a71\u52a8\uff0chost\u9a71\u52a8\u7528RoboPeak\u539f\u6765\u7684rpusbdisp\uff0c\u5355\u5355\u6539\u4e86\u5206\u8fa8\u7387\uff08\u6539\u6210\u6db2\u6676\u5c4f\u7684\u5206\u8fa8\u7387800X480\uff09\uff0c\u5f53\u7136\u73b0\u5728\u9a71\u52a8\u521a\u521a\u80fd\u7528\uff0c\u8fd8\u6709\u5f88\u591a\u8981\u5b8c\u5584\u3002<\/p>\n

    \u5728USB\u534f\u8bae\u5c42\u4e0a\u6709\u4e00\u4e2ainterface\uff0c\u4e24\u4e2aendpoint\uff0c\u4e00\u4e2aOUT\u4f20\u8f93Robopeak\u6db2\u6676\u5c4f\u7684\u56fe\u50cf\u534f\u8bae\uff0c\u53e6\u4e00\u4e2aIN\u4f20\u8f93\u89e6\u6478\u5c4f\u7684\u8f93\u5165\u3002<\/p>\n

      \n
    1. OUT endpoint<\/li>\n<\/ol>\n

      \u6839\u636eRoboPeak\u7684rpusbdisp\u7684\u534f\u8bae\uff0c\u6211\u53ea\u5b9e\u73b0\u56fe\u7247\u62f7\u8d1d\u7684bitblt\u547d\u4ee4\u5c31\u884c\u4e86\uff0c\u8fd9\u4e2a\u662fhost\u9a71\u52a8\u68c0\u6d4b\u5230\u753b\u9762\u6709\u66f4\u65b0\u540e\u62f7\u8d1d\u56fe\u7247\u7ed9gadget\u9a71\u52a8\u3002\u6211\u53ea\u8981\u4ecb\u7ecd\u5230\u56fe\u7247\u6570\u636e(\u989c\u8272\u6df1\u5ea616\u4f4d\uff0c565\u683c\u5f0f\u7684\u771f\u5f69\u8272)\u62f7\u8d1d\u5230\u5f53\u524d\u7684framebuffer\u5c31\u53ef\u4ee5\u4e86\uff0c\u6211\u8fd9\u91cc\u76f4\u63a5\u9738\u738b\u786c\u4e0a\u5f13\u62f7\u8d1d\u7684framebuffer\u7684base memory\u91cc\u3002<\/p>\n

      \u5f53\u7136\u4e00\u5e45800480\u7684\u56fe\u7247\u4f20\u8f93\u6570\u636e\u5c31\u6709700\u591aK(800<\/em>480*2=768000)\uff0c\u4e3a\u4e86\u538b\u7f29\u6570\u636e\uff0cRoboPeak\u7684\u534f\u8bae\u91cc\u68c0\u6d4b\u5230gadget\u9a71\u52a8\u7248\u672c\u5927\u4e8e1.04\u4f1a\u91c7\u7528\u65b0\u7684\u538b\u7f29\u6570\u636e\u65b9\u6cd5\u3002\u7b80\u5355\u6765\u8bf4\u5c31\u662f\u5206\u6210128\u5b57\u8282\u7684\u6bb5\uff0c\u6bcf\u4e2a\u6bb5\u6709\u4e00\u4e2ahead\u5b57\u8282\uff0c\u8868\u793a\u5f53\u524d\u7aef\u662f\u5426\u662f\u91cd\u590d\u7684\u989c\u8272\u6570\u636e(\u4e00\u822c\u7684\u684c\u9762\u80cc\u666f\u5f88\u591a\u91cd\u590d\u989c\u8272\u6570\u636e),\u8fd9\u6837\u7b80\u5355\u7684\u538b\u7f29\u4e00\u4e0b\u4f20\u8f93\u7684\u6570\u636e\u4e00\u4e0b\u5b50\u5c31\u4e0b\u964d\u4e86\u5f88\u591a\u3002<\/p>\n

        \n
      1. IN endpoint<\/li>\n<\/ol>\n

        \u6807\u51c6\u7684\u4e2d\u65ad\u6570\u636e\uff0c\u7531\u4e8e\u8fd9\u4e2aARM\u677f\u5b50\u662fpixcir\u7684\u82af\u7247\uff0c\u652f\u6301\u7535\u5bb9\u5c4f\u548c\u591a\u70b9\u89e6\u6478\u3002\u6211\u5728pixcir\u7684\u9a71\u52a8\u91cc\u505a\u4e86\u4e00\u4e2aHOOK\u51fd\u6570\u83b7\u53d6\u89e6\u6478\u4f4d\u7f6e\u518d\u53d1\u9001\u7ed9host\u3002<\/p>\n

        \u597d\u4e86\uff0c\u5177\u4f53\u7684\u7ec6\u8282\u770b\u4ee3\u7801\u5427:\uff09\u3002<\/p>\n

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

        \u524d\u5e8f \u81ea\u4ece\u5165\u624b\u6811\u8393\u6d3e\u4e00\u4ee3\uff0c\u4e00\u76f4\u95f2\u7f6e\u7740\u3002\u73b0\u5728\u6811\u8393\u6d3e\u90fd\u4e8c\u4ee3\u4e86\uff0c\u518d\u4e0d\u73a9\u73a9\u5c31\u5f7b\u5e95\u5403\u7070\u4e86\u3002 … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a> \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-396","post","type-post","status-publish","format-standard","hentry","category-program"],"_links":{"self":[{"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/posts\/396","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/comments?post=396"}],"version-history":[{"count":4,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/posts\/396\/revisions"}],"predecessor-version":[{"id":536,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/posts\/396\/revisions\/536"}],"wp:attachment":[{"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/media?parent=396"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/categories?post=396"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/tags?post=396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}