{"id":457,"date":"2025-06-22T16:18:03","date_gmt":"2025-06-22T08:18:03","guid":{"rendered":"https:\/\/www.armfun.cn\/?p=457"},"modified":"2025-06-22T16:20:48","modified_gmt":"2025-06-22T08:20:48","slug":"stm32-usb%e8%99%9a%e6%8b%9f%e4%b8%b2%e5%8f%a3","status":"publish","type":"post","link":"https:\/\/www.armfun.cn\/?p=457","title":{"rendered":"Stm32 USB\u865a\u62df\u4e32\u53e3"},"content":{"rendered":"\n<p>1\uff0c\u65b0\u5efaSTM32F072\u9879\u76ee\uff0c\u542f\u7528\u8c03\u8bd5\u53e3\uff0c\u542f\u7528\u5916\u90e88M\u65f6\u949f\uff0c<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"415\" src=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.1-1024x415.png\" alt=\"\" class=\"wp-image-460\" srcset=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.1-1024x415.png 1024w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.1-300x122.png 300w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.1-768x311.png 768w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.1-1536x622.png 1536w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.1-2048x830.png 2048w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.1-670x271.png 670w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"460\" src=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.2-1024x460.png\" alt=\"\" class=\"wp-image-461\" srcset=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.2-1024x460.png 1024w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.2-300x135.png 300w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.2-768x345.png 768w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.2-1536x690.png 1536w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.2-2048x920.png 2048w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.2-670x301.png 670w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"511\" src=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.3-1024x511.png\" alt=\"\" class=\"wp-image-462\" srcset=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.3-1024x511.png 1024w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.3-300x150.png 300w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.3-768x383.png 768w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.3-1536x767.png 1536w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.3-2048x1022.png 2048w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/1.3-670x334.png 670w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><br>2,\u542f\u7528USB\u8bbe\u5907\uff0c\u542f\u7528NVIC\u4e2d\u65ad<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"467\" src=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/2.1-1024x467.png\" alt=\"\" class=\"wp-image-463\" srcset=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/2.1-1024x467.png 1024w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/2.1-300x137.png 300w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/2.1-768x350.png 768w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/2.1-1536x701.png 1536w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/2.1-2048x935.png 2048w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/2.1-670x306.png 670w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><br>3,Middleware\u2192USB_DEVICE\u9009\u62e9Communication Device<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"472\" src=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/3-1024x472.png\" alt=\"\" class=\"wp-image-464\" srcset=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/3-1024x472.png 1024w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/3-300x138.png 300w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/3-768x354.png 768w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/3-1536x707.png 1536w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/3-2048x943.png 2048w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/3-670x309.png 670w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><br>4,\u914d\u7f6e\u9879\u76ee\u540d\u79f0\uff0c\u8f93\u51fa\u5730\u5740\uff0c\u8f93\u51faIDE\u7c7b\u578b\uff0c\u751f\u6210\u4ee3\u7801<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"397\" src=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4-1024x397.png\" alt=\"\" class=\"wp-image-465\" srcset=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4-1024x397.png 1024w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4-300x116.png 300w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4-768x298.png 768w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4-1536x596.png 1536w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4-670x260.png 670w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4.png 1690w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"598\" src=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4.2-1024x598.png\" alt=\"\" class=\"wp-image-466\" srcset=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4.2-1024x598.png 1024w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4.2-300x175.png 300w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4.2-768x449.png 768w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4.2-1536x897.png 1536w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4.2-670x391.png 670w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/4.2.png 1650w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>5,\u6253\u5f00\u9879\u76ee\u4ee3\u7801,\u6253\u5f00usb_cdc_if.c\u6587\u4ef6<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"446\" src=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/5-1024x446.png\" alt=\"\" class=\"wp-image-467\" srcset=\"https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/5-1024x446.png 1024w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/5-300x131.png 300w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/5-768x334.png 768w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/5-1536x669.png 1536w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/5-2048x891.png 2048w, https:\/\/www.armfun.cn\/wp-content\/uploads\/2025\/06\/5-670x292.png 670w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u67093\u4e2a\u63a5\u53e3\u51fd\u6570<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/USB\u4e32\u53e3\u53c2\u6570\u63a7\u5236\nstatic int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length)\n\/\/USB\u4e32\u53e3\u6570\u636e\u63a5\u6536\u56de\u8c03\nstatic int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len)\n\/\/USB\u4e32\u53e3\u6570\u636e\u53d1\u9001\nuint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len)<\/code><\/pre>\n\n\n\n<p>\u4fee\u6539\u63a5\u6536\u56de\u8c03\u51fd\u6570\uff0c\u8c03\u7528\u53d1\u9001\u51fd\u6570CDC_Transmit_FS\uff0c\u8ba9USB\u6536\u5230\u7684\u4e0a\u4f4d\u673a\u6570\u636e\u8fd4\u56de\uff0c\u53ef\u7528USB\u8fde\u63a5\u7535\u8111\uff0c\u901a\u8fc7\u4e32\u53e3\u52a9\u624b\u53d1\u9001\u6570\u636e\uff0c\u67e5\u770b\u662f\u5426\u80fd\u591f\u6536\u5230\u6570\u636e\u56de\u4f20<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>static int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len)\n{\n  \/* USER CODE BEGIN 6 *\/\n  USBD_CDC_SetRxBuffer(&amp;hUsbDeviceFS, &amp;Buf&#91;0]);\n  USBD_CDC_ReceivePacket(&amp;hUsbDeviceFS);\n\t\n\tCDC_Transmit_FS(Buf,*Len);\n  return (USBD_OK);\n  \/* USER CODE END 6 *\/\n}<\/code><\/pre>\n\n\n\n<p>6\uff0c\u5982\u679c\u9700\u8981\u4f7f\u7528\u7269\u7406\u4e32\u53e3\uff0c\u5219\u628a\u7269\u7406\u4e32\u53e3\u6536\u5230\u7684\u6570\u636e\u901a\u8fc7CDC_Transmit_FS\u53d1\u9001\u7ed9\u4e0a\u4f4d\u673a\uff0c\u865a\u62df\u4e32\u53e3\u6536\u5230\u7684\u6570\u636e\u901a\u8fc7\u7269\u7406\u4e32\u53e3\u53d1\u9001\uff0c\u9700\u8981\u6ce8\u610fCDC_Receive_FS\u51fd\u6570\u662f\u5728USB\u4e2d\u65ad\u4e2d\u56de\u8c03\uff0c\u9700\u8981\u9632\u6b62\u4e0e\u4e3b\u5faa\u73af\u51b2\u7a81\u3002<\/p>\n\n\n\n<p>7\uff0c CDC_Control_FS \u51fd\u6570\u4e2d CDC_SET_LINE_CODING\u547d\u4ee4\u4f1a\u4f20\u9012\u7269\u7406\u4e32\u53e3\u7684\u53c2\u6570\uff0c\u5982\u679c\u4e0d\u4f7f\u7528\u7269\u7406\u4e32\u53e3\uff0c\u5219\u4e0d\u7528\u5173\u5fc3\u5185\u5bb9\u3002<\/p>\n\n\n\n<p>CDC_SET_LINE_CODING\u547d\u4ee4\u4f1a\u6536\u52307\u5b57\u8282\u6570\u636e\uff0c\u524d4\u5b57\u8282\u662f\u6ce2\u7279\u7387\uff0cMSB\u5927\u7aef\u683c\u5f0f\uff0c\u540e3\u4e2a\u5b57\u8282\u5206\u522b\u662f\u505c\u6b62\u4f4d\u3001\u6821\u9a8c\u6a21\u5f0f\u3001\u6570\u636ebits\u5bbd\u5ea6\u63a7\u5236\u4fe1\u606f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*******************************************************************************\/\n  \/* Line Coding Structure                                                       *\/\n  \/*-----------------------------------------------------------------------------*\/\n  \/* Offset | Field       | Size | Value  | Description                          *\/\n  \/* 0      | dwDTERate   |   4  | Number |Data terminal rate, in bits per second*\/\n  \/* 4      | bCharFormat |   1  | Number | Stop bits                            *\/\n  \/*                                        0 - 1 Stop bit                       *\/\n  \/*                                        1 - 1.5 Stop bits                    *\/\n  \/*                                        2 - 2 Stop bits                      *\/\n  \/* 5      | bParityType |  1   | Number | Parity                               *\/\n  \/*                                        0 - None                             *\/\n  \/*                                        1 - Odd                              *\/\n  \/*                                        2 - Even                             *\/\n  \/*                                        3 - Mark                             *\/\n  \/*                                        4 - Space                            *\/\n  \/* 6      | bDataBits  |   1   | Number Data bits (5, 6, 7, 8 or 16).          *\/\n  \/*******************************************************************************\/<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>1\uff0c\u65b0\u5efaSTM32F072\u9879\u76ee\uff0c\u542f\u7528\u8c03\u8bd5\u53e3\uff0c\u542f\u7528\u5916\u90e88M\u65f6\u949f\uff0c 2,\u542f\u7528&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-457","post","type-post","status-publish","format-standard","hentry","category-arm"],"views":632,"_links":{"self":[{"href":"https:\/\/www.armfun.cn\/index.php?rest_route=\/wp\/v2\/posts\/457","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.armfun.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.armfun.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.armfun.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.armfun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=457"}],"version-history":[{"count":3,"href":"https:\/\/www.armfun.cn\/index.php?rest_route=\/wp\/v2\/posts\/457\/revisions"}],"predecessor-version":[{"id":470,"href":"https:\/\/www.armfun.cn\/index.php?rest_route=\/wp\/v2\/posts\/457\/revisions\/470"}],"wp:attachment":[{"href":"https:\/\/www.armfun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=457"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.armfun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=457"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.armfun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}