\n
\u76ee\u5f55<\/p>\n
\u4e00\u3001\u00a0STM32\u5185\u7f6eUSB\u3001\u865a\u62df\u4e32\u53e3\u7b80\u8ff0<\/p>\n
\u4e8c\u3001CubeMX \u65b0\u5efa\u5de5\u7a0b<\/p>\n
\u4e09\u3001Keil \u5de5\u7a0b\u914d\u7f6e<\/p>\n
\u56db\u3001\u5b9e\u73b0USB\u6a21\u62df\u63d2\u62d4<\/p>\n
\u4e94\u3001\u53d1\u9001<\/p>\n
\u516d\u3001\u53d1\u9001\u4f18\u5316（\u8fde\u7eed\u53d1\u9001）<\/p>\n
\u4e03\u3001\u63a5\u6536<\/p>\n
\u516b\u3001\u63a5\u6536\u4f18\u5316（\u5728\u5916\u90e8\u5904\u7406\u6570\u636e）<\/p>\n
\n
\n
<\/h2>\n<\/h2>\n\u4e00\u3001\u00a0STM32\u5185\u7f6eUSB\u3001\u865a\u62df\u4e32\u53e3\u7b80\u8ff0<\/span><\/h2>\nSTM32 \u82af\u7247，\u7edd\u5927\u90e8\u5206\u578b\u53f7\u90fd\u5e26\u5185\u7f6eUSB，\u5982\u5e38\u7528\u7684 F1\u3001F4\u3001H7\u3001G4 \u7b49\u7cfb\u5217，\u80fd\u591f\u901a\u8fc7USB\u63a5\u53e3\u4e0e\u8ba1\u7b97\u673a\u6216\u5176\u4ed6USB\u8bbe\u5907\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n
STM32\u5185\u7f6e\u7684USB，\u5747\u53ef\u652f\u6301USB 2.0\u6807\u51c6，\u53ef\u4ee5\u652f\u6301\u4e09\u79cd\u4f20\u8f93\u901f\u7387：<\/p>\n
- \u9ad8\u901f\u6a21\u5f0f：\u6700\u9ad8\u53ef\u8fbe480 Mbps\u00a0 （\u90e8\u5206\u578b\u53f7\u652f\u6301，\u4e14\u9700\u642d\u914d\u5916\u90e8\u82af\u7247，\u4e0d\u5e38\u7528 )<\/li>\n
- \u5168\u901f\u6a21\u5f0f：\u6700\u9ad8\u53ef\u8fbe12 Mbps\u00a0 \u00a0 \u00a0 (\u6700\u5e38\u7528）<\/li>\n
- \u4f4e\u901f\u6a21\u5f0f：\u6700\u9ad8\u53ef\u8fbe1.5 Mbps\u00a0 \u00a0 \u00a0<\/li>\n
\u9ad8\u901f\u6a21\u5f0f，\u9700\u8981\u642d\u914d\u5916\u56f4USB PHY\u82af\u7247，\u5982USB3300，\u786c\u4ef6\u6210\u672c\u504f\u9ad8 \u3002 \u5168\u901f\u6a21\u5f0f，\u7535\u8def\u5f88\u7b80\u5355\u3002\u4ece\u673a\u5728PCB\u5e03\u7ebf\u65f6，\u4ec5\u9700\u628aSTM32\u7684\u5f15\u811aPA11\u3001PA12,\u00a0 \u8fde\u63a5\u81f3USB\u5ea7\u7684DP\u3001DM，\u7136\u540e，PA12(DP\u7ebf)\u75281.5K\u7535\u963b\u4e0a\u62c9\u81f33.3V\u3002\u5177\u4f53\u5982\u4e0b\u56fe：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005546-6848d412b1be7.png\")
<\/p>\n
\u4e0a\u62c9\u8bf4\u660e<\/p>\n
\u63d2\u62d4\u68c0\u6d4b：\u8bbe\u5907\u672a\u63d2\u5165\u65f6，\u4e3b\u673a\u7aefDP\u3001DM\u4e3a\u4f4e\u7535\u5e73，\u5f53\u53d1\u73b0\u88ab\u7f6e\u9ad8，\u5373\u4e3a\u6709\u8bbe\u5907\u63d2\u5165；<\/p>\n
\u533a\u5206\u901f\u7387：DM\u7ebf\u4e0a\u62c9\u662f\u4f4e\u901f\u6a21\u5f0f，DP\u7ebf\u4e0a\u62c9\u662f\u5168\u901f\\\\\u9ad8\u901f\u6a21\u5f0f；<\/p>\n
\u4e0a\u62c9\u7535\u538b：3.3V\u3002USB\u901a\u4fe1\u7535\u5e73\u662f3.3V，\u800c\u4e0d\u662f\u603b\u7ebf\u4f9b\u7535\u76845V\u3002<\/p>\n<\/p>\n
USB\u865a\u62df\u4e32\u53e3，\u7b80\u79f0VPC，Virtual Port Com \u7684\u7b80\u5199\u3002\u4f46\u66f4\u4e60\u60ef\u4e8e\u628a\u865a\u62df\u4e32\u53e3\u53eb\u4f5c: CDC，\u56e0\u4e3a\u5b83\u662f\u5229\u7528 USB \u7684 CDC\u7c7b \u5b9e\u73b0\u7684\u4e00\u79cd\u901a\u4fe1\u63a5\u53e3\u3002<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u5229\u7528STM32\u81ea\u5e26\u7684USB\u529f\u80fd，\u901a\u8fc7CubeMX\u7684\u914d\u7f6e，\u5f88\u65b9\u4fbf\u5730\u5b9e\u73b0\u4e00\u4e2aUSB\u865a\u62df\u4e32\u53e3，\u4ece\u800c\u901a\u8fc7USB\u7ebf，\u5b9e\u73b0\u7535\u8111\u4e0eSTM32\u7684\u6570\u636e\u4e92\u4f20\u3002<\/p>\n
\u54ea\u4e9bwin\u7cfb\u7edf\u652f\u6301\u865a\u62df\u4e32\u53e3？<\/p>\n
Win10\u3001Win11 \u5df2\u5e26\u865a\u62df\u4e32\u53e3\u9a71\u52a8；\u65e0\u9700\u5b89\u88c5\u4efb\u4f55\u9a71\u52a8;\u00a0<\/p>\n
Win7 \u8981\u63d0\u524d\u624b\u52a8\u5b89\u88c5\u9a71\u52a8，\u5426\u5219\u65e0\u6cd5\u8bc6\u522b ：\u865a\u62df\u4e32\u53e3\u9a71\u52a8 \u4e0b\u8f7d<\/p>\n
\n<\/h2>\n\u4e8c\u3001CubeMX \u65b0\u5efa\u5de5\u7a0b<\/span><\/h2>\n\u672c\u7bc7\u4e3a\u4e86\u5de5\u7a0b\u7684\u6e05\u6670，\u5c06\u4ece0\u5f00\u59cb， \u65b0\u5efa\u4e00\u4e2a\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u7684\u5de5\u7a0b\u3002<\/p>\n
\u65e5\u5e38\u505a\u9879\u76ee，\u4e0d\u5efa\u8bae\u65b0\u5efa，\u800c\u662f\u590d\u5236\u5df2\u6709\u7684\u65e7\u5de5\u7a0b，\u901a\u8fc7CubeMX\u589e\u5220\u9700\u8981\u7684\u529f\u80fd\u3002<\/p>\n
\u8fd9\u6837\u80fd\u51cf\u5c11\u4e00\u4e9b\u5e38\u7528\u529f\u80fd\u7684\u518d\u6b21\u914d\u7f6e，\u5982\u6309\u952e\u3001UART\u7b49；<\/p>\n
\u590d\u7528\u65e7\u5de5\u7a0b\u91cc\u5df2\u9a8c\u8bc1\u8fc7\u7684\u529f\u80fd，\u80fd\u6709\u6548\u5730\u51cf\u5c11\u5e38\u7528\u529f\u80fd\u7684\u8c03\u8bd5\u65f6\u95f4\u3002<\/p>\n<\/p>\n
1\u3001\u4ee5\u82af\u7247\u578b\u53f7\u65b0\u5efa<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005546-6848d412cc397.png\")
<\/p>\n<\/p>\n
2\u3001\u641c\u7d22\u82af\u7247\u578b\u53f7<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005547-6848d413162d2.png\")
<\/p>\n<\/p>\n
3\u3001\u8bbe\u7f6e\u8c03\u8bd5\u6a21\u5f0f<\/p>\n
\u8fdb\u5165\u914d\u7f6e\u9875\u9762\u540e，\u517b\u6210\u4e60\u60ef，\u4f18\u5148\u8bbe\u7f6e\u8c03\u8bd5\u6a21\u5f0f：Serial Wire\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005547-6848d4137641b.png\")
<\/p>\n<\/p>\n
4\u3001\u9009\u62e9\u6676\u632f\u6e90<\/p>\n
\u5916\u90e8\u9ad8\u901f\u6676\u632f\u6e90(HSE)：Crystal\/Ceramic Resonator<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005547-6848d413d4e98.png\")
<\/p>\n<\/p>\n
5\u3001USB\u5de5\u4f5c\u6a21\u5f0f<\/p>\n
USB_OTG_FS：\u9009\u62e9 Device_Only;\u00a0 \u8bbe\u5907\u6a21\u5f0f(\u4ece\u673a\u6a21\u5f0f);\u00a0 \u00a0\u5176\u5b83\u53c2\u6570，\u9ed8\u8ba4\u3002<\/p>\n
\u6709\u4e9b\u82af\u7247\u578b\u53f7，\u5982F103\u7cfb\u5217，CubeMX\u4e0a\u7684\u663e\u793a\u662f：USB_FS，\u914d\u7f6e\u6b65\u9aa4\u662f\u4e00\u6837\u7684\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005548-6848d41447866.png\")
<\/p>\n<\/p>\n
6\u3001\u4e2d\u95f4\u4ef6\u7ec4\u4ef6<\/p>\n
USB_DEVICE：\u9009\u62e9 CDC (VPC)；\u00a0 \u5176\u5b83\u53c2\u6570，\u9ed8\u8ba4;<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005548-6848d4149906a.png\")
<\/p>\n<\/p>\n
6\u3001\u914d\u7f6e\u7cfb\u7edf\u65f6\u949f<\/p>\n
\u2460\u00a0\u5f53\u542f\u7528USB\u529f\u80fd\u540e，\u8fdb\u5165\u65f6\u949f\u914d\u7f6e\u9875\u9762\u65f6，\u5f39\u7a97：\u00a0\u662f\u5426\u81ea\u52a8\u914d\u7f6e\u7cfb\u7edf\u65f6\u949f?\u00a0 \u9009\u62e9：No \u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005548-6848d414c6f9d.png\")
<\/p>\n<\/p>\n
\u2461\u00a0\u5148\u786e\u8ba4\u677f\u4e0a\u7684\u6676\u632f\u503c<\/p>\n
\n- \u914d\u7f6e\u65f6\u949f\u524d，\u5f88\u91cd\u8981\u7684\u4e00\u4e2a\u4e8b：\u5148\u6838\u5bf9\u5f00\u53d1\u677f\u4e0a\u7684\u6676\u632f\u9891\u7387（\u5728\u6676\u632f\u4e0a\u7684\u6570\u5b57）！<\/li>\n
- \u6676\u632f\u9891\u7387\u914d\u7f6e\u9519\u8bef\u65f6，\u7f16\u8bd1\u4e0d\u4f1a\u62a5\u9519，\u4f46\u7cfb\u7edf\u53ef\u80fd\u4e0d\u8fd0\u884c\u3001\u901a\u4fe1\u9519\u4e71\u7b49，\u540e\u671f\u6392\u67e5\u5f88\u8d39\u65f6\u95f4！<\/li>\n
- \u76ee\u524dSTM32\u7684\u677f\u5b50，\u5e38\u7528\u7684\u5916\u90e8\u9ad8\u901f\u6676\u632f\u6709\u4e09\u79cd：8M\u300112M\u300125M\u3002<\/li>\n<\/ul>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005549-6848d4151d222.png\")
<\/p>\n<\/p>\n
\u2462\u00a0STM32F103 \u65f6\u949f\u914d\u7f6e：<\/p>\n
\n\u6676\u632f\u503c\u8f93\u5165\u5206\u9891\u8f93\u51fa\u500d\u9891USB\u5206\u9891APB1\u5206\u9891APB2\u5206\u9891\u7cfb\u7edf\u00a0\u65f6\u949f<\/tr>\n \n\n8<\/td>\n 1<\/td>\n 9<\/td>\n 1.5<\/td>\n 2<\/td>\n 1<\/td>\n 72MHz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005549-6848d4153bc81.png\")
<\/p>\n<\/p>\n
\u2463\u00a0STM32F4xx \u65f6\u949f\u914d\u7f6e：<\/p>\n
\u6ce8\u610f：F4\u7cfb\u5217，\u5404\u677f\u5546\u7565\u6709\u4e0d\u540c，\u5927\u90e8\u5206\u662f25M,\u00a0\u5c11\u90e8\u5206\u662f8M，\u4f7f\u7528\u6548\u679c\u4e00\u6837\u3002<\/p>\n
\n\u6676\u632f\u503c\u8f93\u5165\u5206\u9891\u8f93\u51fa\u500d\u9891\u8f93\u51fa\u5206\u9891USB\u5206\u9891APB1\u5206\u9891APB2\u5206\u9891\u7cfb\u7edf\u65f6\u949f<\/tr>\n \n\n25<\/td>\n 25<\/td>\n 336<\/td>\n 2<\/td>\n 7<\/td>\n 4<\/td>\n 2<\/td>\n 168MHz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005549-6848d415a4216.png\")
<\/p>\n<\/p>\n
7\u3001\u5de5\u7a0b\u914d\u7f6e<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005550-6848d41604fd9.png\")
<\/p>\n
\n- \u5de5\u7a0b\u540d\u79f0\u3001\u8def\u5f84，\u8fd9\u4e24\u9879，\u5fc5\u987b\u82f1\u6587\u3002\u5426\u5219，\u751f\u6210\u7684\u5de5\u7a0b\u5c06\u4f1a\u7f3a\u5c11\u542f\u52a8\u6587\u4ef6<\/li>\n
- \u5f00\u53d1\u5de5\u5177：MDK-ARM,\u00a0 \u5373\u751f\u6210Keil\u5de5\u7a0b\u00a0<\/li>\n
- \u5806\u5927\u5c0f，\u5efa\u8bae：0x400<\/li>\n
- \u6808\u5927\u5c0f，\u5efa\u8bae：0x1000<\/li>\n<\/ul>\n<\/p>\n
8\u3001\u6587\u4ef6\u548c\u4ee3\u7801\u7684\u914d\u7f6e<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005550-6848d4164775e.png\")
<\/p>\n<\/p>\n
9\u3001\u751f\u6210<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005550-6848d4167a635.png\")
<\/p>\n<\/p>\n
\u7a0d\u7b49\u00a0\u7247\u523b：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005550-6848d416b9a91.png\")
<\/p>\n<\/p>\n
\u751f\u6210\u7684\u5de5\u7a0b\u6587\u4ef6\u5939：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005550-6848d416c887d.png\")
<\/p>\n
Keil\u5de5\u7a0b\u7684\u5165\u53e3\u6587\u4ef6：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005550-6848d416d587b.png\")
<\/p>\n<\/p>\n
\n<\/h2>\n<\/h2>\n\u4e09\u3001Keil \u5de5\u7a0b\u914d\u7f6e<\/span><\/h2>\n<\/p>\n\u6309\u4e0a\u8ff0，\u53cc\u51fb\u6253\u5f00Keil\u5de5\u7a0b\u3002<\/p>\n
1\u3001\u65b0\u5efa\u7684\u5de5\u7a0b，\u9700\u8981\u8bbe\u7f6e\u4e00\u6b21\u4eff\u771f\u5668\u53c2\u6570 \u3002（\u70b9\u51fb OK \u4fdd\u5b58，\u5426\u5219\u65e0\u6548）\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005550-6848d416e7b21.png\")
<\/p>\n<\/p>\n
2\u3001\u914d\u7f6e\u5e38\u7528\u7684\u8c03\u8bd5\u9009\u9879<\/p>\n
\u4e0b\u9762\u8fd9\u4e24\u9879\u662f\u975e\u5fc5\u8981\u7684，\u5efa\u8bae\u6253\u52fe\u4f7f\u7528；\u7f16\u8bd1\u540e\u751f\u6548; \u6253\u52fe\u4f1a\u4ee4\u7f16\u8bd1\u901f\u5ea6\u53d8\u6162；<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005551-6848d41742685.png\")
<\/p>\n
\n- Debug Infomation: \u751f\u6210\u8c03\u8bd5\u4fe1\u606f\u3002debug\u6a21\u5f0f\u4e2d\u65e0\u6cd5\u8bbe\u7f6e\u65ad\u70b9，\u5c31\u662f\u8fd9\u4e2a\u9009\u9879\u6ca1\u6253\u52fe\u3002<\/li>\n
- Bowse Infomation: \u751f\u6210\u8ffd\u8e2a\u4fe1\u606f\u3002\u5982，\u53f3\u51fb\u51fd\u6570\u3001\u53d8\u91cf，\u70b9\u51fb\u5f39\u51fa\u83dc\u5355：Go To Definition…<\/li>\n<\/ul>\n
\u00a03\u3001\u7f16\u8bd1 \u9a8c\u8bc1<\/p>\n
\n- 0\u00a0Error，\u6b63\u7a0b\u6b63\u5e38\u3002<\/li>\n
- \u6709 Error，\u5931\u8d25；\u5e94\u8be5\u662f (2-7) \u90a3\u4e00\u6b65\u5de5\u7a0b\u540d\u79f0\u3001\u8def\u5f84\u6709\u4e2d\u6587\u3002\u4fee\u6539\u540e\u91cd\u65b0\u751f\u6210\u5373\u53ef\u3002<\/li>\n
- \u5148\u522b\u70e7\u5f55，\u522b\u70e7\u5f55，\u522b\u70e7\u5f55\u3002<\/li>\n<\/ul>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005551-6848d41759dd1.png\")
<\/p>\n<\/p>\n
\n\u56db\u3001\u5b9e\u73b0USB\u6a21\u62df\u63d2\u62d4<\/span><\/h2>\n<\/p>\n\u901a\u8fc7 CubeMX\u00a0\u914d\u7f6e\u540e\u751f\u6210\u7684\u5de5\u7a0b，\u5b83\u5df2\u5e26\u9700\u8981\u7684\u521d\u59cb\u5316\u4ee3\u7801\u3001\u914d\u7f6e\u4ee3\u7801\u3001\u57fa\u7840\u51fd\u6570\u7b49\u3002<\/p>\n
\u6211\u4eec\u53ea\u9700\u5728\u5de5\u7a0b\u91cc，\u6309\u9700\u8fdb\u884c\u7b80\u5355\u7684\u914d\u7f6e\u3001\u4fee\u6539\u4ee3\u7801，\u5373\u53ef\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\u00a01\u3001\u5305\u542b USB\u63a5\u53e3\u00a0\u7684\u5934\u6587\u4ef6<\/p>\n
\n- \u6253\u5f00 main.c\u6587\u4ef6，\u5927\u7ea6\u7b2c26\u884c，\u914d\u5bf9\u7684\u00a0\/*\u00a0USER CODE ……\u00a0Includes *\/\u00a0<\/span>\u6ce8\u91ca\u4e4b\u95f4,<\/li>\n
- \u6dfb\u52a0：#include\u00a0 "usbd_cdc_if.h"<\/li>\n<\/ul>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
![\"\"](\"2025-06-11j0gcpzhusym.png\")
<\/p>\n<\/p>\n
2\u3001\u589e\u52a0 USB\u6a21\u62df\u63d2\u62d4 <\/p>\n
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\u5f53\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf\u4e00\u76f4\u63d2\u5728USB\u53e3\u4e0a，\u7a0b\u5e8f\u91cd\u65b0\u70e7\u5f55\u540e，\u7a0b\u5e8f\u7684\u91cd\u65b0\u8fd0\u884c，\u5c06\u5bfc\u81f4\u901a\u4fe1\u9519\u8bef\u3001USB\u7aef\u53e3"\u5047\u6b7b"\u7b49\u73b0\u8c61;\u00a0<\/p>\n
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\u5f53\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf\u4e00\u76f4\u63d2\u5728USB\u53e3\u4e0a，\u5728STM32\u70e7\u5f55\u7a0b\u5e8f\u91cd\u65b0\u8fd0\u884c\u540e，\u7a0b\u5e8f\u91cc\u7684USB\u4ee3\u7801\u7b49\u5f85\u7740\u4e3b\u673a\u65b9\u53d1\u8d77\u679a\u4e3e\u8fc7\u7a0b；\u800c\u8fd9\u4e2a\u671f\u95f4\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf\u6ca1\u6709\u65ad\u5f00，\u4e3b\u673a\u65b9\u8ba4\u4e3a\u8bbe\u5907\u65b9\u4e00\u76f4\u5728\u7ebf，\u65e9\u5df2\u679a\u4e3e\u6210\u529f，\u4e00\u76f4\u5bf9\u5176\u8f6e\u8be2\u6570\u636e\u6536\u53d1\u3002\u53cc\u65b9\u201c\u5357\u8f95\u5317\u8f99，\u80e1\u8a00\u4e71\u8bed\u201d，\u6ce8\u5b9a\u7ffb\u8f66\u3002<\/p>\n
\u6b63\u5e38\u64cd\u4f5c\u662f：\u6bcf\u6b21\u70e7\u5f55\u524d，\u5148\u628a\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf\u62d4\u4e0b\u6765，\u70e7\u5f55\u597d\u4e86，\u518d\u63d2\u4e0a，……\u3002<\/p>\n
\u4e3a\u4e86\u907f\u514d\u8c03\u8bd5\u671f\u95f4\u9891\u7e41\u5730\u624b\u52a8\u64cd\u4f5c，\u6211\u4eec\u53ef\u4ee5\u5728\u7a0b\u5e8f\u5f00\u8dd1\u540e\u3001USB\u521d\u59cb\u5316\u524d，\u7528\u4ee3\u7801\u628aPA12\u7f6e\u4f4e，\u4f7fD+\u7ebf\u4e3a\u4f4e\u7535\u5e73，\u6301\u7eed\u4e00\u6bb5\u65f6\u95f4，\u6a21\u62dfUSB\u62d4\u51fa\u52a8\u4f5c，\u4ee4\u4e3b\u673a\u8ba4\u4e3a\u8bbe\u5907\u5df2\u65ad\u5f00\u8fde\u63a5，\u91ca\u653e\u7aef\u53e3; \u7136\u540e，\u5f53\u7a0b\u5e8f\u8fd0\u884c\u5230\u540e\u9762\u7684USB\u521d\u59cb\u5316\u51fd\u6570\u65f6，PA12\u4f1a\u88ab\u6b63\u5e38\u914d\u7f6e（DP\u7ebf\u7535\u5e73\u88ab\u7f6e\u9ad8)，USB\u4e3b\u673a\u5c31\u4f1a"\u53d1\u73b0"\u6709\u8bbe\u5907\u63d2\u5165，\u5f00\u59cb\u5c1d\u8bd5\u679a\u4e3e\u3001\u914d\u7f6e;<\/p>\n
\u5177\u4f53\u64cd\u4f5c：<\/p>\n
\n- \u6253\u5f00\u00a0usbd_conf.c\u00a0\u6587\u4ef6，\u5927\u7ea6\u7b2c70\u884c\u9644\u8fd1，\u627e\u5230HAL_PCD_MspInit ( )\u51fd\u6570;<\/li>\n
- \u5728\u4e24\u5bf9 \/* USER … 0 *\/\u00a0\u6ce8\u91ca\u4e4b\u95f4，\u7ea675\u884c，\u6dfb\u52a0PA12\u5f15\u811a\u7f6e\u4f4e\u7535\u5e73\u64cd\u4f5c,\u00a0 \u5982\u4e0b（\u53ef\u590d\u5236）:<\/li>\n<\/ul>\n
__HAL_RCC_GPIOA_CLK_ENABLE(); \/\/ \u4f7f\u80fdGPIOA\u7aef\u53e3
\n GPIO_InitTypeDef GPIO_InitStruct = {0}; \/\/ \u58f0\u660e\u7ed3\u6784\u4f53; \u5982\u679c\u4e0e\u6587\u4e2d\u4f4d\u7f6e\u76f8\u540c，\u8fd9\u884c\u53ef\u4e0d\u5199
\n GPIO_InitStruct.Pin = GPIO_PIN_12; \/\/ \u5f15\u811aPA12, \u5373D+
\n GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; \/\/ \u5f15\u811a\u5de5\u4f5c\u6a21\u5f0f
\n GPIO_InitStruct.Pull = GPIO_PULLDOWN; \/\/ \u4e0b\u62c9
\n GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; \/\/ \u5f15\u811a\u53cd\u8f6c\u901f\u5ea6
\n HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); \/\/ \u521d\u59cb\u5316
\n HAL_Delay(5); \/\/ \u6301\u7eed\u7247\u523b <\/p>\n
\u6ce8\u610f，\u6700\u540e\u4e00\u884c\u7684\u5ef6\u65f6，\u662f\u5fc5\u987b\u7684，\u5efa\u8bae\u57285ms\u5de6\u53f3;<\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
![\"\"](\"2025-06-11pkc4v3kde0s.png\")
<\/p>\n
\u589e\u52a0\u8fd9\u6bb5\u4ee3\u7801\u540e，\u518d\u65e0\u9700\u624b\u52a8\u63d2\u62d4\u00a0\u865a\u62df\u4e32\u53e3\u7684USB\u00a0\u7ebf\u4e86，\u7a0b\u5e8f\u5c06\u6a21\u62df \u201c\u00a0\u65ad\u5f00\u3001\u63d2\u5165\u201d;<\/p>\n
\u518d\u6b21\u7f16\u8bd1，\u786e\u4fdd\u4e0a\u8ff0\u64cd\u4f5c\u6b63\u5e38 （\u5148\u522b\u70e7\u5f55）\u3002<\/p>\n<\/p>\n
\n<\/h2>\n<\/h2>\n\u4e94\u3001\u53d1\u9001<\/span><\/h2>\n<\/p>\n\u53d1\u9001\u6570\u636e\u7684\u51fd\u6570<\/p>\n
uint8_t CDC_Transmit_FS ( uint8_t* Buf, uint16_t Len ); <\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u51fd\u6570\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570：\u6570\u636e\u7f13\u51b2\u533a\u7684\u5730\u5740\u3001\u5b57\u8282\u6570\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u679cUSB\u8bbe\u5907\u6b63\u5fd9，\u5b83\u4f1a\u8fd4\u56deUSBD_BUSY\u72b6\u6001\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u4e2a\u51fd\u6570\u7684\u4f5c\u7528\u662f\u8bbe\u7f6e\u4f20\u8f93\u6570\u636e\u7684\u7f13\u51b2\u533a，\u5e76\u6807\u8bb0\u6570\u636e\u5305\u4e3a\u5f85\u53d1\u9001\u3002\u6570\u636e\u5e76\u975e\u7acb\u523b\u53d1\u51fa，\u800c\u662f\u88ab\u5b58\u50a8\u5728USB\u5916\u8bbe\u7684\u7f13\u51b2\u533a\u4e2d，\u7b49\u5f85\u4e3b\u673a\u8f6e\u8be2\u8bf7\u6c42\u4f20\u8f93\u3002<\/p>\n<\/p>\n
\u53d1\u9001\u793a\u8303\u64cd\u4f5c<\/p>\n
\n- \u5728main.c\u00a0\u7684 while\u00a0\u5faa\u73af\u4e2d，\u6dfb\u52a0\u4e09\u884c\u6d4b\u8bd5\u4ee3\u7801：1\u884c\u5ef6\u65f6\u3001\u4e24\u884c\u53d1\u9001\u6570\u636e;<\/li>\n<\/ul>\n
\u6ce8\u610f：\u662f\u5171\u4e09\u884c，1\u884c\u5ef6\u65f6，2\u884c\u53d1\u9001\u3002<\/p>\n
\u8bf7\u4e25\u683c\u6309\u7167\u8fd9\u4e09\u884c\u6765\u5199，\u56e0\u4e3a\u6211\u4eec\u8981\u987a\u5e26\u5b9e\u73b0\u4e00\u4e2abug,\u00a0 \u7136\u540e\u4e0b\u9762\u65b9\u4fbf\u89e3\u91ca\u5177\u4f53\u539f\u56e0！<\/p>\n
![\"\"](\"2025-06-113mzkiksur3o.png\")
<\/p>\n
\u65b0\u624b，\u60f3\u7701\u65f6\u95f4，\u5c31\u8bf7\u6309\u6b65\u9aa4\u64cd\u4f5c\u00a0：<\/p>\n
\n- \u5148\u522b\u63d2\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf<\/li>\n
- \u7f16\u8bd1\u3001\u70e7\u5f55\u4ee3\u7801<\/li>\n
- \u6253\u5f00\u4e32\u53e3\u52a9\u624b, （\u8fd9\u65f6\u662f\u6ca1\u6709\u63d2\u865a\u62df\u4e32\u53e3USB\u7ebf\u7684），\u67e5\u770b\u76ee\u524d\u6709\u54ea\u4e9b\u7aef\u53e3\u53f7<\/li>\n
- \u63d2\u5165\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf，\u5230\u5f00\u53d1\u677f\u7684 USB-Slave\u63a5\u53e3\u00a0<\/li>\n
- ( \u524d\u63d0：win10\u300111\u7cfb\u7edf\u5df2\u5e26\u865a\u62df\u4e32\u53e3\u9a71\u52a8; win7\u8981\u624b\u52a8\u5b89\u88c5\u9a71\u52a8：\u865a\u62df\u4e32\u53e3\u4e0b\u8f7d)<\/li>\n
- ( \u7535\u8111\u4f1a\u81ea\u52a8\u8bc6\u522b\u5230\u8bbe\u5907；\u5982\u679c\u662f\u7b2c\u4e00\u6b21\u4f7f\u7528\u865a\u62df\u4e32\u53e3，\u7535\u8111\u5c06\u81ea\u52a8\u5b89\u88c5\u9a71\u52a8\u7a0b\u5e8f)<\/li>\n
- \u68c0\u67e5\u4e32\u53e3\u52a9\u624b，\u53d1\u73b0\u591a\u4e86\u4e00\u4e2a\u7aef\u53e3\u53f7， \u9009\u62e9\u5b83，\u6ce2\u7279\u7387\u7b49\u53c2\u6570\u4e0d\u7528\u4fee\u6539，\u6253\u5f00\u7aef\u53e3;<\/li>\n<\/ul>\n
\u63a5\u7ebf，\u5982\u4e0b\u56fe（\u793a\u4f8b\u6240\u7528\u7684\u5f00\u53d1\u677f）：<\/p>\n
\n- \u5de6\u4fa7\u4e3a\u7528\u6237USB\u63a5\u53e3，\u5df2\u8fde\u63a5PA11\u3001PA12，\u6211\u4eec\u5c31\u662f\u7528\u8fd9\u4e2aU\u53e3\u5b9e\u73b0\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u3002<\/li>\n
- \u53f3\u4fa7\u662f\u677f\u8f7d\u4eff\u771f\u5668CMSIS DAP\u7684\u63a5\u53e3，\u5b83\u81ea\u5e26\u4e86USB\u8f6cTTL\u529f\u80fd\u3002<\/li>\n<\/ul>\n
![\"\"](\"2025-06-11kygpd5qvaly.png\")
<\/p>\n
\u6ce8\u610f\u7aef\u53e3\u7684\u9009\u62e9：<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u5f53\u4f7f\u7528\u7684\u5f00\u53d1\u677f，\u5df2\u5e26USB\u8f6cTTL\u529f\u80fd，\u5982\u4e0a\u9762\u8fd9\u4e2a\u3002\u5728\u70e7\u5f55\u865a\u62df\u4e32\u53e3\u7684\u7a0b\u5e8f\u540e，\u4e32\u53e3\u52a9\u624b\u4f1a\u6709\u81f3\u5c11\u4e24\u4e2a\u7aef\u53e3\u53f7：\u677f\u5b50\u81ea\u5e26\u7684USB\u8f6cTTL（\u53f3\u4fa7）\u3001\u7a0b\u5e8f\u5b9e\u73b0\u7684\u865a\u62df\u4e32\u53e3（\u5de6\u4fa7），\u6ce8\u610f\u4e0d\u8981\u9009\u62e9\u9519\u4e86\u3002<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u5982\u679c\u4e0d\u77e5\u9053\u54ea\u6839\u7ebf\u5bf9\u5e94\u54ea\u4e2a\u7aef\u53e3：\u5728\u70e7\u5f55\u540e，\u62d4\u4e00\u4e0bUSB\u7ebf，\u770b\u770b\u54ea\u4e2a\u7aef\u53e3\u6d88\u5931\u4e86\u3002<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u53e6\u4e00\u65b9\u6cd5，\u6709\u4e9b\u4e32\u53e3\u52a9\u624b\u7684\u7aef\u53e3\u5217\u8868，\u80fd\u663e\u793a\u8bbe\u5907\u4fe1\u606f，\u627e\u5230\u5e26\u201cSTM…\u201d\u63cf\u8ff0\u7684\u90a3\u4e2a\u3002<\/p>\n<\/p>\n
\u73b0\u5728\u80fd\u770b\u5230，\u4e32\u53e3\u52a9\u624b\u80fd\u63a5\u6536\u5230\u7a0b\u5e8f\u6301\u7eed\u53d1\u51fa\u7684\u6570\u636e\u4e86！<\/p>\n
\u6548\u679c\u5982\u4e0b\u56fe：<\/p>\n
![\"\"](\"2025-06-11safnr4z5r5h.png\")
<\/p>\n
\n<\/p>\n\u516d\u3001\u53d1\u9001\u4f18\u5316（\u8fde\u7eed\u53d1\u9001）<\/span><\/h2>\n<\/p>\n\u4e0a\u8282\u7684\u53d1\u9001，\u5b9e\u73b0\u65f6，\u53ea\u80fd\u6536\u5230\u7b2c\u4e00\u884c"Hello"，\u800c\u7b2c\u4e8c\u884c\u53d1\u51fa\u7684\u6570\u636e:"\u501f\u70b9\u94b1 "\u5374\u6ca1\u6536\u5230！！<\/p>\n
\u4e0d\u662f\u6ca1\u6536\u5230\u3002\u5176\u5b9e，\u4eceSTM32\u7a0b\u5e8f\u7684\u89d2\u5ea6，\u662f\u6ca1\u6709\u53d1\u51fa\u6570\u636e！<\/p>\n
\u5148\u8bf4\u8bf4，USB\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u7684\u51e0\u4e2a\u91cd\u70b9 (\u7279\u6307：USB2.0\u3001\u5168\u901f\u6a21\u5f0f\u3001\u4e2d\u65ad\u4f20\u8f93）：<\/p>\n
\n- USB\u662f\u8f6e\u8be2\u673a\u5236，\u4e3b\u673a\u5bf9\u8bbe\u5907\u4e0d\u65ad\u8f6e\u8be2，\u95f4\u9694\u6700\u5c0f1ms；\u4e0d\u662f\u56fa\u5b9a\u76841ms,\u00a0 \u662f\u6700\u5c0f\u95f4\u9694\u65f6\u95f4;<\/li>\n
- USB\u7684\u6570\u636e，\u662f\u6309\u5305\u4f20\u8f93\u7684;\u00a0<\/li>\n
- \u6bcf\u4e2a\u8bbe\u5907，\u6bcf1ms，\u6700\u591a\u4f20\u8f931\u5305\u6570\u636e;<\/li>\n
- \u6bcf\u5305\u6700\u591a64\u5b57\u8282（\u6709\u6548\u8d1f\u8f7d）;<\/li>\n<\/ul>\n
\u518d\u8bf4\u8bf4，CDC_Transmit_FS ( )\u00a0\u51fd\u6570：<\/p>\n
\n- \u5b83\u7684\u7b2c2\u4e2a\u53c2\u6570，"\u5b57\u8282\u6570"，\u8303\u56f4：0~2048;\u00a0\u8fd9\u4e2a2048\u53ef\u4ee5\u5728CubeMX\u91cc\u8fdb\u884c\u8bbe\u7f6e\u5927\u5c0f;\u00a0<\/li>\n
- \u5b57\u8282\u6570 <= 64，\u7b971\u5305\u3002\u5982：\u53d13\u4e2a\u5b57\u8282，\u4e5f\u7b971\u5305\u3002<\/li>\n
- \u5b57\u8282\u6570 == 0，\u4e5f\u7b971\u5305\u3002\u4fd7\u79f0：\u7a7a\u5305; \u5982\u679c\u4e0a\u4e00\u5e27\u521a\u597d\u53d1\u900164\u5b57\u8282，\u518d\u53d1\u4e00\u4e2a\u7a7a\u5305\u4f5c\u4e3a\u7ed3\u675f\u5305;<\/li>\n
- \u5b57\u8282\u6570 >\u00a064，\u00a0CDC_Transmit_FS ( )\u00a0\u80cc\u540e\u6709\u7f13\u5b58，\u5b83\u81ea\u52a8\u5206\u5305，1ms\u5de6\u53f3\u53d11\u5305，\u76f4\u81f3\u53d1\u5b8c;<\/li>\n
- \u5982\u679c\u4e0a\u4e00\u5305\u8fd8\u6ca1\u53d1\u5b8c，\u518d\u6b21\u8c03\u7528CDC_Transmit_FS ( ) ，\u5c06\u653e\u5f03\u672c\u6b21\u8c03\u7528\u3002<\/li>\n<\/ul>\n
\u4e0a\u9762while\u5faa\u73af\u4e2d，\u8fde\u7eed\u3001\u4e24\u6b21\u8c03\u7528CDC_Transmit_FS ( ) .<\/p>\n
\n- \u7b2c1\u6b21\u8c03\u7528，\u5c06\u6b63\u5e38\u53d1\u51fa\u4e00\u5305\u6570\u636e;<\/li>\n
- \u7b2c2\u6b21\u8c03\u7528，\u518d\u53d1\u9001\u4e00\u5305\u3002\u4f46\u662f，\u4e24\u5305\u6ca1\u6709\u95f4\u96941ms\u4ee5\u4e0a，\u5bfc\u81f4\u4e86\u7b2c2\u6b21\u7684\u53d1\u9001，\u88ab\u820d\u5f03\u4e86\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u5148\u6253\u5f00\u00a0CDC_Transmit_FS ( )\u00a0\u51fd\u6570，\u770b\u770b\u51fd\u6570\u539f\u578b\u3002<\/p>\n
\u5728\u4ee3\u7801\u4e2d，\u53f3\u51fbCDC_Transmit_FS ( ) ，\u5f39\u51fa\u83dc\u5355，\u9009\u62e9Go To Definition…，\u5c06\u8df3\u8f6c\u5230\u51fd\u6570\u4f4d\u7f6e;<\/p>\n
\u6216\u8005，\u5728\u5de6\u4fa7\u6587\u4ef6\u6811\u4e2d，\u53cc\u51fb\u6253\u5f00usbd_cdc_if.c\u00a0\u6587\u4ef6 ，CDC_Transmit_FS ( ) \u4f4d\u4e8e\u5927\u7ea6280\u884c\u00a0;<\/p>\n
\u7279\u522b\u6ce8\u610f：<\/span><\/p>\nusbd_cdc_if.c\u00a0\u662f\u5e94\u7528\u5c42\u6587\u4ef6，\u6211\u4eec\u5bf9\u6536\u3001\u53d1\u6709\u5565\u7279\u6b8a\u9700\u6c42，\u901a\u8fc7\u4fee\u6539\u6587\u4ef6\u91cc\u7684\u53d1\u9001\u51fd\u6570\u3001\u63a5\u6536\u56de\u8c03\u51fd\u6570\u3001\u7c7b\u8bf7\u6c42\u51fd\u6570，\u57fa\u672c\u90fd\u80fd\u5b9e\u73b0\u3002<\/p>\n
\u4e0b\u56fe，\u662f\u00a0CDC_Transmit_FS ( )\u00a0\u51fd\u6570\u622a\u56fe\u3002<\/p>\n
\u7ea2\u6846\u7684\u4ee3\u7801\u4f5c\u7528\u662f：\u5f53\u8bbe\u5907\u5fd9\u65f6，\u76f4\u63a5\u653e\u5f03\u53d1\u9001,：<\/p>\n
![\"\"](\"2025-06-11jxr0cwv3plt.png\")
<\/p>\n<\/p>\n
\u4fee\u6539：<\/p>\n
\n- \u6ce8\u91ca\u6389\u521a\u624d if\u00a0\u4f53\u76843\u884c\u4ee3\u7801;<\/li>\n
- \u589e\u52a0\u7b49\u5f85\u53d1\u9001\u7a7a\u95f2\u3001\u5224\u65ad\u8d85\u65f6，\u5982\u4e0b6\u884c;<\/li>\n
- \u6574\u4e2aCDC_Transmit_FS ( ) \u51fd\u6570，\u5982\u4e0b:（\u53ef\u590d\u5236）<\/li>\n<\/ul>\n
uint8_t CDC_Transmit_FS(uint8_t *Buf, uint16_t Len)
\n{
\n uint8_t result = USBD_OK;
\n \/* USER CODE BEGIN 7 *\/<\/p>\n
USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)hUsbDeviceFS.pClassData; \/\/ \u83b7\u5f97\u8bbe\u5907\u7684\u72b6\u6001\u4fe1\u606f\u7ed3\u6784\u4f53
\n \/\/ if (hcdc->TxState != 0){
\n \/\/ return USBD_BUSY;
\n \/\/ }
\n uint32_t timeStart = HAL_GetTick();
\n while (hcdc->TxState)
\n {
\n if (HAL_GetTick() – timeStart > 20)
\n return USBD_BUSY;
\n }<\/p>\n
USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
\n result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);<\/p>\n
\/* USER CODE END 7 *\/
\n return result;
\n} <\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50：![\"\"](\"2025-06-11wskj2ab31oc.png\")
<\/p>\n<\/p>\n
\u518d\u6b21\u7f16\u8bd1\u3001\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u4e32\u53e3\u52a9\u624b，\u73b0\u5728\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
![\"\"](\"2025-06-11dz5w0t5fvi5.png\")
<\/p>\n
\u8fde\u7eed\u53d1\u9001\u5df2\u5b9e\u73b0\u4e86\u3002<\/p>\n
\u4e0a\u8ff0\u65b9\u6cd5\u80fd\u591f\u89e3\u51b3\u8fde\u7eed\u53d1\u9001\u5931\u8d25\u7684\u95ee\u9898\u3002<\/p>\n
\u4f46\u5b83\u5b58\u5728\u4e00\u4e2a\u663e\u8457\u7f3a\u70b9：\u7531\u4e8e\u5176\u963b\u585e\u6027\u8d28，\u9891\u5bc6\u8fde\u7eed\u53d1\u9001\u65f6，\u5c06\u5bfc\u81f4\u8fd0\u884c\u201c\u6b7b\u7b49\u201d，\u5f71\u54cd\u7a0b\u5e8f\u6548\u7387\u3002<\/p>\n
（\u5bf9\u4e8e\u5927\u90e8\u5206\u573a\u666f，\u4e0a\u8ff0\u65b9\u6cd5\u5df2\u8db3\u591f\u3002\u672c\u8282\u5185\u5bb9，\u53ea\u662f\u4e3a\u4f60\u9884\u57cb\u4e00\u79cd\u5907\u7528\u601d\u8def，\u65e0\u9700\u6b7b\u78d5\u3002）<\/p>\n
\u5982\u679c\u9879\u76ee\u5bf9\u5b9e\u65f6\u6027\u6709\u8f83\u9ad8\u7684\u8981\u6c42，\u53ef\u4ee5\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528\u53d1\u9001\u6570\u636e\u51fd\u6570 CDC_Transmit_FS() \u548c\u53d1\u9001\u5b8c\u6210\u56de\u8c03\u51fd\u6570 CDC_TransmitCplt_FS() \u6765\u63d0\u9ad8\u4f20\u8f93\u6548\u7387\u3002CDC_TransmitCplt_FS() \u4f1a\u5728 CDC_Transmit_FS() \u51fd\u6570\u53d1\u9001\u6570\u636e\u5b8c\u6bd5\u540e\u81ea\u52a8\u88ab\u8c03\u7528\u3002<\/p>\n
\u6839\u636e\u8fd9\u4e24\u4e2a\u51fd\u6570\u7684\u7279\u70b9，\u53ef\u4ee5\u8bbe\u8ba1\u4e00\u5957\u9ad8\u6548\u7684\u53d1\u9001\u7f13\u5b58\u673a\u5236\u3002\u4f8b\u5982，\u53ef\u4ee5\u7ef4\u62a4\u4e00\u4e2a\u53d1\u9001\u961f\u5217，\u5f53 CDC_Transmit_FS() \u5b8c\u6210\u53d1\u9001\u540e，CDC_TransmitCplt_FS() \u88ab\u8c03\u7528\u65f6，\u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u4e0b\u4e00\u4e2a\u6570\u636e\u9879\u8fdb\u884c\u53d1\u9001，\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u6570\u636e\u4f20\u8f93\u7684\u8fde\u7eed\u6027\u3002<\/p>\n
\u8fd9\u4e2a\u53d1\u9001\u5b8c\u6210\u56de\u8c03\u51fd\u6570 CDC_TransmitCplt_FS() ，\u4f4d\u4e8e\u53d1\u9001\u51fd\u6570 CDC_Transmit_FS() \u7684\u6b63\u4e0b\u65b9\u3002<\/p>\n
\u81f3\u4e8e\u5177\u4f53\u7684\u4ee3\u7801\u5b9e\u73b0，\u4e0d\u540c\u9879\u76ee\u9700\u6c42\u5404\u5f02，\u65e0\u6cd5\u63d0\u4f9b\u4e00\u4e2a\u901a\u7528\u7684\u89e3\u51b3\u65b9\u6848\u3002\u56e0\u6b64，\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u9879\u76ee\u9700\u6c42，\u8fdb\u884c\u9488\u5bf9\u6027\u7684\u8bbe\u8ba1\u548c\u4f18\u5316，\u4e0d\u80fd\u4e00\u836f\u6cbb\u767e\u75c5\u3002<\/p>\n
\n<\/h2>\n<\/h2>\n\u4e03\u3001\u63a5\u6536<\/span><\/h2>\n<\/p>\n1\u3001\u63a5\u6536\u65b9\u5f0f\u7684\u7b80\u8ff0<\/p>\n
\u5f53USB CDC\u63a5\u6536\u5230\u6765\u81eaUSB\u4e3b\u673a\u7684\u6570\u636e\u65f6，\u89e6\u53d1\u4e2d\u65ad\u8fdb\u5165\u4e2d\u65ad\u51fd\u6570，\u7ee7\u800c\u81ea\u52a8\u8c03\u7528\u63a5\u6536\u56de\u8c03\u51fd\u6570:<\/p>\n
int8_t\u00a0 CDC_Receive_FS\u00a0(uint8_t* Buf, uint32_t *Len);\u00a0\u00a0 <\/p>\n
\n- uint8_t* Buf:\u00a0 \u00a0\u6307\u5411\u63a5\u6536\u7f13\u51b2\u533a\u7684\u6307\u9488，\u5373\u6570\u636e\u7f13\u5b58\u7684\u5730\u5740\u3002<\/li>\n
- uint16_t* Len: \u5f53\u524d\u6570\u636e\u5305\u7684\u5b57\u8282\u6570\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u5c31\u5728\u8fd9\u4e2a\u56de\u8c03\u51fd\u6570\u91cc，\u5904\u7406\u63a5\u6536\u5230\u7684\u6570\u636e！<\/p>\n
\u5b83\u5728\u00a0usbd_cdc_if.c \u6587\u4ef6，\u4f4d\u4e8e\u53d1\u9001\u51fd\u6570\u7684\u6b63\u4e0a\u65b9；<\/p>\n
\u51fd\u6570\u5185\u90e8，\u751f\u6210\u7684\u4ee3\u7801\u91cc，\u53ea\u67092\u884c\u6267\u884c\u4ee3\u7801，\u6307\u5b9a\u4e0b\u6b21\u63a5\u6536\u7684\u5b58\u653e\u4f4d\u7f6e;\u00a0 \u5982\u4e0b\u56fe\u6240\u793a：<\/p>\n
\u800c\u672c\u6b21\u6240\u63a5\u6536\u5230\u7684\u6570\u636e，\u8be5\u5982\u4f55\u5904\u7406，\u9700\u8981\u6211\u4eec\u81ea\u884c\u6dfb\u52a0\u4ee3\u7801\u3002<\/p>\n
![\"\"](\"2025-06-11op5tenqbgv0.png\")
<\/p>\n<\/p>\n
\u63a5\u6536\u673a\u5236\u6ce8\u610f\u4e8b\u9879：<\/p>\n
\n- \u6bcf\u5f53\u63a5\u6536\u5230\u4e00\u5305\u6570\u636e，\u786c\u4ef6\u81ea\u52a8\u89e6\u53d1\u4e2d\u65ad\u51fd\u6570，\u00a0\u7ee7\u800c\u8c03\u7528\u6b64\u63a5\u6536\u56de\u8c03\u51fd\u6570，\u65e0\u9700\u4eba\u5de5\u8c03\u7528\u3002<\/li>\n
- \u4e0e\u53d1\u9001\u673a\u5236\u76f8\u4f3c，\u6bcf\u95f4\u96941ms，\u6700\u591a\u63a5\u65361\u5305\u6570\u636e，\u6bcf\u5305\u6700\u592764\u5b57\u8282\u3002\u3002<\/li>\n
- \u5982\u679c\u9700\u8981\u63a5\u6536\u8d85\u8fc764\u5b57\u8282\u7684\u6570\u636e\u5e27，\u6ce8\u610f，\u6307\u4e0a\u4f4d\u673a\u53d1\u9001\u76841\u4e2a\u5b8c\u6574\u6570\u636e\u5e27，\u800c\u975eUSB\u7684\u5355\u5305\u6570\u636e，\u5982，\u4e0a\u4f4d\u673a\u53d1\u6765\u4e00\u5f20\u56fe\u7247\u6570\u636e，8350\u4e2a\u5b57\u8282，\u5219\u9700\u8981\u5728\u6b64\u56de\u8c03\u51fd\u6570\u4e2d\u6dfb\u52a0\u989d\u5916\u7684\u4ee3\u7801\u6765\u5224\u65ad\u5e27\u6570\u636e\u4f20\u8f93\u5b8c\u6574\u7ed3\u675f \u3001\u624b\u52a8\u5c06\u591a\u4e2a\u6570\u636e\u5305\u62fc\u63a5\u6210\u5b8c\u6574\u7684\u6570\u636e\u5e27\u3002<\/li>\n
- \u63a5\u6536\u5230\u6570\u636e\u65f6，\u7f13\u5b58\u4e0d\u4f1a\u63d0\u524d\u81ea\u52a8\u6e05\u96f6，\u65b0\u6570\u636e\u4eceBuf\u7684\u8d77\u59cb\u4f4d\u7f6e\u5f00\u59cb，\u8986\u76d6\u5b58\u653e\u3002<\/li>\n
- \u7531\u4e8e\u8be5\u56de\u8c03\u51fd\u6570\u662f\u88ab\u4e2d\u65ad\u51fd\u6570\u8c03\u7528\u7684，\u56e0\u6b64\u5efa\u8bae\u51fd\u6570\u5185\u90e8\u7684\u5904\u7406\u5c3d\u53ef\u80fd\u5730\u7b80\u77ed，\u4ee5\u907f\u514d\u5f71\u54cd\u7cfb\u7edf\u7684\u5b9e\u65f6\u6027（\u4e2d\u65ad\u51fd\u6570\u8fd0\u884c\u671f\u95f4，\u4f1a\u4ee4\u7a0b\u5e8f\u6301\u7eed\u6302\u8d77）\u3002<\/li>\n<\/ul>\n
2\u3001\u63a5\u6536\u793a\u8303<\/p>\n
\u672c\u8282\u5c06\u793a\u8303：<\/p>\n
\n- \u901a\u8fc7\u4e32\u53e3\u52a9\u624b，\u53d1\u9001\u5b57\u7b26\u4e32\u00a0<\/li>\n
- STM32（\u8bbe\u5907\u7aef）\u6536\u5230\u6570\u636e\u540e，\u628a\u6536\u5230\u7684\u5b57\u8282\u6570\u3001\u5b57\u7b26\u4e32，\u53d1\u56de\u4e32\u53e3\u52a9\u624b\u663e\u793a（\u4e3b\u673a\u7aef）<\/li>\n<\/ul>\n
\u5728\u51fd\u6570\u5185\u7684\u6ce8\u91ca\u884c\u00a0 \/* USER CODE BEGIN *\/\u00a0 \u4e0b\u65b9，\u6dfb\u52a04\u884c\u81ea\u5b9a\u4e49\u4ee3\u7801（\u53ef\u590d\u5236）\u3002<\/p>\n
char myStr[64] = {0}; \/\/ \u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4，\u7528\u4e8e\u5b58\u653e\u8981\u8f93\u51fa\u7684\u5b57\u7b26\u4e32
\n sprintf(myStr, "\\\\r\\\\r\u6536\u5230 %d \u4e2a\u5b57\u8282；\\\\r\u5185\u5bb9\u662f：%s\\\\r\\\\r", *Len, (char *)Buf); \/\/ \u683c\u5f0f\u5316\u5b57\u7b26\u4e32
\n CDC_Transmit_FS((uint8_t *)myStr, strlen(myStr)); \/\/ \u53d1\u9001
\n memset(Buf, 0, 64); \/\/ \u5904\u7406\u5b8c\u6570\u636e，\u6e050\u63a5\u6536\u7f13\u5b58;<\/p>\n
\u6ce8\u610f：<\/p>\n
\n- \u7528char\u00a0\u58f0\u660emyStr[ ],\u00a0\u662f\u56e0\u4e3a\u6b64\u5904\u60f3\u628a\u5b83\u4f5c\u4e3a\u4e00\u6bb5\u5b57\u7b26\u4e32\u7a7a\u95f4;<\/li>\n
- sprintf\u662fC\u8bed\u8a00\u6807\u51c6\u8f93\u5165\u8f93\u51fa\u5e93\u7684\u51fd\u6570，\u5982\u679c\u62a5\u9519\u6ca1\u6709\u8fd9\u4e2a\u51fd\u6570，\u5c31：#include <stdio.h><\/li>\n
- \u83b7\u53d6\u5b57\u8282\u6570，\u662f*Len，\u800c\u4e0d\u662fLen;\u00a0 \u56e0\u4e3a\u5b83\u5728\u51fd\u6570\u53c2\u6570\u91cc\u7684\u58f0\u660e，\u662f\u4e00\u4e2a\u6307\u9488;<\/li>\n
- \u4e3a\u4e86\u683c\u5f0f\u5316\u6210\u5b57\u7b26\u4e32，Buf\u7528\u4e86(char*)\u8fdb\u884c\u5f3a\u5236\u8f6c\u6362\u6210\u5b57\u7b26\u7c7b\u578b;\u00a0<\/li>\n
- CDC_Transmit_FS( )\u91cc，\u7528\u4e86strlen\u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u5b57\u8282\u6570，\u5b83\u53ea\u5bf9\u5b57\u7b26\u4e32\u6709\u6548，\u5bf9\u5176\u5b83\u6570\u636e\u7c7b\u578b\u65e0\u6548;\u00a0 \u5982\u679c\u62a5\u9519\u6ca1\u6709\u8fd9\u4e2a\u51fd\u6570，\u5c31：#include\u00a0 <string.h><\/li>\n
- \u5982\u679c\u4f20\u8f93\u7684\u662f16\u8fdb\u5236\u6570，\u7528uint8_t\u00a0\u58f0\u660e\u4e0a\u9762\u6570\u7ec4，\u7136\u540e\u4fee\u6539sprintf\u7684\u683c\u5f0f\u5316\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n
\u6dfb\u52a0\u5b8c\u6210\u540e，\u6587\u4ef6\u662f\u8fd9\u6837\u5b50\u7684：<\/p>\n
![\"\"](\"2025-06-11iay4rrrmb1a.png\")
<\/p>\n<\/p>\n
\u518d\u6b21\u7f16\u8bd1\u3001\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u4e32\u53e3\u52a9\u624b，\u6253\u5f00\u5bf9\u5e94\u7684\u7aef\u53e3\u53f7（\u6ce2\u7279\u7387\u7b49\u53c2\u6570\u4e0d\u7528\u4fee\u6539），<\/p>\n
\u5728\u53d1\u9001\u533a，\u4ee5ASCII\u65b9\u5f0f，\u53d1\u9001\u5b57\u7b26\u4e32（\u56e0\u4e3a\u6dfb\u52a0\u7684\u4ee3\u7801\u91cc\u7528%s\u683c\u5f0f\u5316，\u5904\u7406\u7684\u662f\u5b57\u7b26\u4e32)，<\/p>\n
\u7136\u540e，\u4e32\u53e3\u52a9\u624b\u7684\u63a5\u6536\u533a，\u9a6c\u4e0a\u80fd\u63a5\u6536\u5230\u521a\u624d\u53d1\u51fa\u7684\u6570\u636e！<\/p>\n
\u81f3\u6b64，\u5df2\u5b9e\u73b0\u63a5\u6536\u7684\u5904\u7406\u3002<\/p>\n
![\"\"](\"2025-06-11zogxkm0imvb.png\")
<\/p>\n
\n<\/p>\n\u516b\u3001\u63a5\u6536\u4f18\u5316（\u5728\u5916\u90e8\u5904\u7406\u6570\u636e）<\/span><\/h2>\n<\/p>\n\u4e0a\u9762，\u6211\u4eec\u5df2\u5b9e\u73b0：\u83b7\u53d6\u3001\u4f7f\u7528\u63a5\u6536\u5230\u7684\u6570\u636e\u3002<\/p>\n
\u5728\u63a5\u6536\u56de\u8c03\u51fd\u6570\u4e2d，\u76f4\u63a5\u64cd\u4f5c\u6570\u636e\u7684\u53d1\u9001，\u901a\u5e38\u662f\u5b89\u5168\u7684，\u56e0\u4e3a\u8fd9\u79cd\u64cd\u4f5c\u8017\u65f6\u975e\u5e38\u77ed，\u6700\u591a\u7b49\u5f851\u6b21\u4e3b\u673a\u8f6e\u8be2\u5468\u671f（1ms）\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b，\u4e0d\u4f1a\u5bf9\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u6570\u636e\u63a5\u6536\u9020\u6210\u663e\u8457\u5f71\u54cd\u3002<\/p>\n
\u4f46\u662f，\u5982\u679c\u5728\u63a5\u6536\u56de\u8c03\u51fd\u6570\u4e2d\u6267\u884c\u8017\u65f6\u8f83\u957f\u7684\u64cd\u4f5c，\u5982\u663e\u793a\u5230LCD\u6216\u5b58\u50a8\u5230Flash\u7b49，\u8fd9\u4e9b\u64cd\u4f5c\u53ef\u80fd\u9700\u8981\u6570\u6beb\u79d2\u5230\u6570\u5341\u6beb\u79d2\u624d\u80fd\u5b8c\u6210\u3002\u8017\u65f6\u8f83\u957f\u7684\u64cd\u4f5c，\u53ef\u80fd\u4f1a\u5bfc\u81f4\u63a5\u6536\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u6f0f\u5305\u73b0\u8c61\u3002<\/p>\n
\u56e0\u4e3a\u63a5\u6536\u56de\u8c03\u51fd\u6570\u662f\u7531USB\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u8c03\u7528\u7684，\u5c5e\u4e8e\u4e2d\u65ad\u5904\u7406\u7684\u4e00\u90e8\u5206，\u5728\u56de\u8c03\u51fd\u6570\u6267\u884c\u671f\u95f4，\u4e3b\u7a0b\u5e8f\u8fd8\u5904\u4e8e\u4e2d\u65ad\u6302\u8d77\u72b6\u6001，\u5176\u4ed6\u4ee3\u7801\u548c\u4e2d\u65ad\u4e5f\u4f1a\u88ab\u6682\u505c\u6267\u884c，\u5f62\u8c61\u5730\u63cf\u8ff0：\u201c\u5361\u6b7b\u201d\u3002<\/p>\n
\u5982\u679c\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u7684\u6267\u884c\u64cd\u4f5c\u8f83\u8017\u65f6，\u4f1a\u5bfc\u81f4\u4e0b\u4e00\u5305\u6570\u636e\u65e0\u6cd5\u53ca\u65f6\u8fdb\u5165\u4e2d\u65ad，\u4ece\u800c\u9020\u6210\u6570\u636e\u4e22\u5931\u3002<\/p>\n
\u4e3e\u4f8b\u8bf4\u660e：<\/p>\n
\n- A (\u7535\u8111USB\u4e3b\u673a)\u6bcf\u96941ms\u6254\u51fa1\u679a\u9e21\u86cb，B(STM32\u4e2d\u65ad\u670d\u52a1\u51fd\u6570）\u8d1f\u8d23\u63a5\u9e21\u86cb\u3002<\/li>\n
- \u5f53B\u63a5\u9e21\u86cb\u5904\u7406\u5f97\u6bd4A\u5feb，\u5373\u6bd4A\u6254\u51fa\u7684\u95f4\u9694\u66f4\u77ed，\u59820.5ms，\u90a3，\u6ca1\u95ee\u9898\u3002<\/li>\n
- \u4f46\u662f，\u5f53B\u63a5\u9e21\u86cb\u7684\u5904\u7406\u65f6\u95f4\u8f83\u957f，\u5982，\u63a5\u4e86\u9e21\u86cb\u8fd8\u8981\u5199\u4e0a\u4ef7\u683c，\u518d\u653e\u7f6e\u5230\u8d27\u67b6，\u517120ms，\u00a0\u90a3\u80af\u5b9a\u5c31\u63a5\u4e0d\u4f4fA\u6301\u7eed\u6254\u8fc7\u6765\u7684\u9e21\u86cb\u4e86，\u6bcf\u63a51\u4e2a，\u5c31\u4f1a\u4e22\u5931\u540e\u9762\u768419\u4e2a，\u518d\u63a51\u4e2a，\u518d\u4e22\u593119\u4e2a…….;\u00a0\u6ce8\u610f，A\u662f\u4e0d\u7ba1B\u662f\u5426\u6570\u636e\u4e22\u5305\u7684，\u5b83\u53ea\u8d1f\u8d23\u6bcf1ms\u6254(\u53d1\u9001)\u4e00\u6b21\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u9700\u8981\u91c7\u53d6\u4e00\u79cd\u7b56\u7565，\u4f7f\u5f97\u7a0b\u5e8f\u7684\u4e2d\u65ad\u54cd\u5e94\u3001\u201c\u5361\u6b7b\u201d\u5360\u65f6，\u5c3d\u53ef\u80fd\u5730\u77ed：<\/p>\n
\n- \u63a5\u6536\u6570\u636e：\u5728\u4e2d\u65ad\u56de\u8c03\u51fd\u6570\u4e2d，\u6211\u4eec\u4ec5\u6267\u884c\u5fc5\u8981\u7684\u6570\u636e\u590d\u5236\u64cd\u4f5c，\u5373\u628a\u63a5\u6536\u5230\u7684\u6570\u636e\u8fc5\u901f\u590d\u5236\u5230\u5916\u90e8\u7f13\u5b58\u4e2d\u3002\u8fd9\u4e00\u64cd\u4f5c\u7684\u8017\u65f6\u901a\u5e38\u5728us\u7ea7\u522b;<\/li>\n
- \u5904\u7406\u6570\u636e：\u5728\u4e3b\u7a0b\u5e8f\u7684while\u5faa\u73af\u4e2d，\u6211\u4eec\u518d\u5bf9\u6570\u636e\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u5904\u7406\u3002\u7531\u4e8e\u8fd9\u4e00\u5904\u7406\u8fc7\u7a0b\u4e0d\u5360\u7528\u4e2d\u65ad\u8d44\u6e90，\u56e0\u6b64\u4e0d\u4f1a\u5f71\u54cd\u7a0b\u5e8f\u5bf9\u65b0\u6570\u636e\u7684\u63a5\u6536;<\/li>\n<\/ul>\n
\u8fd9\u79cd\u7b56\u7565\u901a\u8fc7\u5206\u79bb\u6570\u636e\u63a5\u6536\u548c\u6570\u636e\u5904\u7406\u4e24\u4e2a\u6b65\u9aa4，\u786e\u4fdd\u4e86\u7a0b\u5e8f\u80fd\u591f\u5feb\u901f\u54cd\u5e94\u8fde\u7eed\u7684\u6570\u636e\u6d41，\u540c\u65f6\u907f\u514d\u4e86\u56e0\u5904\u7406\u65f6\u95f4\u8fc7\u957f\u800c\u5bfc\u81f4\u7684\u6570\u636e\u4e22\u5931\u3002<\/p>\n<\/p>\n
\u64cd\u4f5c\u51714\u4e2a\u6b65\u9aa4，\u5177\u4f53\u5982\u4e0b：<\/p>\n
1\u3001\u589e\u52a0\u5168\u5c40\u53d8\u91cf<\/p>\n
\u5728usbd_cdc_if.c\u6587\u4ef6\u5927\u7ea697\u884c，\u914d\u5bf9\u7684\u6ce8\u91ca\u5185，\u5b9a\u4e49\u4e24\u4e2a\u53d8\u91cf：<\/p>\n
\/* USER CODE BEGIN PRIVATE_VARIABLES *\/
\nuint8_t myUsbRxData[64] = { 0 }; \/\/ \u63a5\u6536\u5230\u7684\u6570\u636e
\nuint16_t myUsbRxNum = 0; \/\/ \u63a5\u6536\u5230\u7684\u5b57\u8282\u6570<\/p>\n
\/* USER CODE END PRIVATE_VARIABLES *\/ <\/p>\n
\u73b0\u5728，\u5b83\u4fe9\u53ea\u662f\u672c\u5730\u53d8\u91cf，\u7b49\u4f1a\u8981\u5728main\u4e2d\u7528extern\u518d\u58f0\u660e\u4e00\u6b21，\u624d\u80fd\u88ab\u5916\u90e8\u8c03\u7528\u3002<\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
![\"\"](\"2025-06-11exiobdeetns.png\")
<\/p>\n<\/p>\n
2\u3001\u4fee\u6539\u63a5\u6536\u56de\u8c03\u51fd\u6570<\/p>\n
\u5728CDC_Receive_FS()\u00a0\u91cc，\u5220\u9664\u6211\u4eec\u4e0a\u8282\u589e\u52a0\u7684\u6d4b\u8bd5\u4ee3\u7801;<\/p>\n
\u628aBuf\u548c*Len\u7684\u6570\u636e，\u590d\u5236\u5230\u6211\u4eec\u521a\u624d\u7684\u4e24\u4e2a\u53d8\u91cf\u91cc\u3002\u51fd\u6570\u4fee\u6539\u6210：<\/p>\n
static int8_t CDC_Receive_FS(uint8_t *Buf, uint32_t *Len)
\n{
\n \/* USER CODE BEGIN 6 *\/
\n \/\/ \u628aBuf\u91cc\u9762\u7684\u6570\u636e，\u590d\u5236\u5230\u5916\u90e8\u7f13\u5b58
\n memset(myUsbRxData, 0, 64); \/\/ \u6e050\u7f13\u5b58\u533a
\n memcpy(myUsbRxData, Buf, *Len); \/\/ \u628a\u63a5\u6536\u5230\u7684\u6570\u636e，\u590d\u5236\u5230\u81ea\u5df1\u7684\u7f13\u5b58\u533a\u4e2d
\n myUsbRxNum = *Len; \/\/ \u590d\u5236\u5b57\u8282\u6570
\n memset(Buf, 0, 64); \/\/ \u5904\u7406\u5b8c\u6570\u636e，\u6e050\u63a5\u6536\u7f13\u5b58; <\/p>\n
\/\/ CubeMX\u751f\u6210\u7684\u4ee3\u7801，\u4fdd\u7559
\n USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]); \/\/ \u8bbe\u7f6e\u4e0b-\u4e2a\u63a5\u6536\u7f13\u51b2\u533a
\n USBD_CDC_ReceivePacket(&hUsbDeviceFS); \/\/ \u542f\u52a8\u4e0b\u4e00\u4e2a\u6570\u636e\u5305\u7684\u63a5\u6536
\n return (USBD_OK);
\n \/* USER CODE END 6 *\/
\n} <\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
![\"\"](\"2025-06-11c1fy3z2xri4.png\")
<\/p>\n
\u73b0\u5728，\u6570\u636e\u63a5\u6536\u90e8\u5206，\u5df2\u5904\u7406\u597d\u4e86\u3002<\/p>\n
\u4ee5\u540e\u56de\u8c03\u51fd\u6570\u8fd0\u884c\u65f6，\u53ea\u590d\u5236\u6570\u636e\u81f3\u5916\u90e8\u7f13\u5b58（\u5907\u7528），\u4e2d\u65ad\u65f6\u95f4\u5360\u7528\u6781\u77ed，\u4e0d\u4f1a\u5f71\u54cd\u4e0b\u5305\u63a5\u6536\u3002<\/p>\n<\/p>\n
3\u3001 \u5728\u5916\u90e8\u7528extern\u58f0\u660e\u53d8\u91cf，\u4ee4\u5916\u90e8\u53ef\u8c03\u7528\u6570\u636e<\/p>\n
\u5916\u90e8，\u54ea\u4e2a\u6587\u4ef6\u91cc\u8981\u4f7f\u7528CDC\u63a5\u6536\u7684\u6570\u636e，\u5c31\u5728\u8fd9\u4e2a\u6587\u4ef6\u91cc，\u7528extern\u58f0\u660e\u90a3\u4fe9\u53d8\u91cf\u3002<\/p>\n
\u5982，\u53ef\u4ee5\u5728LCD\u6587\u4ef6，\u4e5f\u53ef\u4ee5\u5728SD\u5361\u7684\u6587\u4ef6\u4e2d，\u90fd\u884c\u3002<\/p>\n
\u5efa\u8bae\u5728main.h\u6587\u4ef6\u4e2d\u58f0\u660e，\u5176\u5b83\u6587\u4ef6\u518d#include "main.h"，\u8fd9\u6837，\u53ef\u4ee5\u4ee4\u53d8\u91cf\u5168\u5c40\u53ef\u7528\u3002<\/p>\n
\n- \u6253\u5f00 main.c，\u53f3\u51fb\u7a7a\u767d，\u70b9\u51fb"Toggle\u00a0Header\/Code File"，\u53ef\u4ee5\u8df3\u8f6c\u5230\u5934\u6587\u4ef6：main.h\u00a0\u00a0<\/li>\n<\/ul>\n
![\"\"](\"2025-06-11tzbet4jrwx4.png\")
<\/p>\n<\/p>\n
\u5728main.h\u4e2d，\u5927\u7ea638\u884c，\u627e\u5230\u00a0\u914d\u5bf9\u7684\u6ce8\u91ca\u884c\u00a0\/* USER CODE BEGIN ET *\/<\/p>\n
\u7528 extern\u00a0\u518d\u6b21\u58f0\u660e\u521a\u624d\u4e24\u4e2a\u53d8\u91cf\u3002\u5982\u4e0b（\u53ef\u590d\u5236）：<\/p>\n
\u6ce8\u610f，\u662f\u53ea\u58f0\u660e，\u4e0d\u8981\u8d4b\u503c，\u5426\u5219\u7f16\u8bd1\u9519\u8bef\u3002<\/p>\n
\/* USER CODE BEGIN ET *\/
\nextern uint8_t myUsbRxData[ ] ;
\nextern uint16_t myUsbRxNum ;<\/p>\n
\/* USER CODE END ET *\/ <\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
![\"\"](\"2025-06-11ufgmhylgjv4.png\")
<\/p>\n
\u4ee3\u7801\u89c4\u8303：<\/span> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u91cc\u7684\u793a\u8303，\u4f7f\u7528\u5168\u5c40\u53d8\u91cf，\u53ea\u662f\u4e3a\u4e86\u66f4\u6e05\u6670\u5730\u6f14\u793a\u64cd\u4f5c\u601d\u8def\u3002<\/p>\n\u00a0 \u00a0 \u00a0 \u00a0 \u9879\u76ee\u4e2d，\u5c3d\u91cf\u907f\u514d\u4f7f\u7528\u5168\u5c40\u53d8\u91cf；\u4e0d\u540c\u6587\u4ef6\u95f4\u7684\u6570\u636e\u83b7\u53d6，\u53ef\u4ee5\u5c01\u88c5\u6210\u51fd\u6570，\u5982 CDC_GetRxData()\u3001CDC_GetRxNum()，\u8fd4\u56de\u6570\u636e\u5730\u5740\u3001\u63a5\u6536\u7684\u5b57\u8282\u6570\u3002\u00a0\u00a0\u00a0\u00a0<\/p>\n<\/p>\n
4\u3001\u4f7f\u7528\u63a5\u6536\u5230\u6570\u636e<\/p>\n
\u5728main.c\u7684while\u5faa\u73af\u4e2d，\u901a\u8fc7\u5224\u65admyUsbRxNum\u7684\u503c，\u53ea\u8981\u5927\u4e8e0，\u5c31\u8868\u793a\u6536\u5230\u6570\u636e\u4e86<\/p>\n
\u8bb0\u5f97\u6bcf\u6b21\u5904\u7406\u5b8c\u6570\u636e，\u628amyUsbRxNum\u7f6e0，\u4ee5\u4fbf\u4e8e\u4e0b\u4e00\u8f6e\u7684\u5224\u65ad\u3002<\/p>\n
![\"\"](\"2025-06-11bi2ulgxalow.png\")
<\/p>\n
\u518d\u6b21\u70e7\u5f55，\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u6253\u5f00\u4e32\u53e3\u52a9\u624b，\u53d1\u9001\u6d4b\u8bd5\u6587\u672c，\u53ef\u4ee5\u53d1\u73b0，\u80fd\u6210\u529f\u6536\u5230STM32\u53d1\u8fc7\u6765\u7684\u56de\u4f20\u6570\u636e\u3002<\/p>\n
![\"\"](\"2025-06-110noax3xzjeg.png\")
<\/p>\n<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u679c，\u5916\u90e8\u5904\u7406\u6570\u636e\u7684\u901f\u5ea6\u8ddf\u4e0d\u4e0a，\u5982，\u5728while\u91cc\u6bcf\u6b21\u6536\u5230\u6570\u636e\u90fd\u8981\u663e\u793a\u5230LCD，LCD\u7684\u901f\u5ea6\u8fdc\u6162\u4e8eUSB\u7684\u4f20\u8f93，\u90a3，\u8fd8\u4e0d\u662f\u53d8\u76f8\u4e22\u4e86\u6570\u636e？！\u662f\u7684，\u4f1a\u6709\u8fd9\u79cd\u60c5\u51b5！<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u4f46，\u90a3\u5df2\u7ecf\u662f\u7a0b\u5e8f\u903b\u8f91\u548c\u65f6\u95f4\u7247\u673a\u5236\u7684\u95ee\u9898\u4e86，3\u59293\u591c\u4e5f\u55d1\u4e0d\u5b8c！<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u672c\u8282\u53ea\u8ba8\u8bba：\u786e\u4fdd\u6bcf\u4e00\u5305\u6570\u636e，\u90fd\u80fd\u88ab\u6b63\u5e38\u63a5\u6536\u5230\u3002\u5916\u90e8\u80fd\u5426\u53ca\u65f6\u5904\u7406，\u4e0d\u8ff0\u3002<\/p>\n<\/p>\n
\u81f3\u6b64，\u672c\u7bc7\u5b8c\u7ed3\u3002<\/p>\n
\u5982\u6709\u9519\u6f0f，\u671b\u7559\u8a00\u6307\u6b63，\u53ca\u65f6\u66f4\u65b0！！<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
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\u4e00\u3001\u00a0STM32\u5185\u7f6eUSB\u3001\u865a\u62df\u4e32\u53e3\u7b80\u8ff0<\/span><\/h2>\nSTM32 \u82af\u7247，\u7edd\u5927\u90e8\u5206\u578b\u53f7\u90fd\u5e26\u5185\u7f6eUSB，\u5982\u5e38\u7528\u7684 F1\u3001F4\u3001H7\u3001G4 \u7b49\u7cfb\u5217，\u80fd\u591f\u901a\u8fc7USB\u63a5\u53e3\u4e0e\u8ba1\u7b97\u673a\u6216\u5176\u4ed6USB\u8bbe\u5907\u8fdb\u884c\u901a\u4fe1\u3002<\/p>\n
STM32\u5185\u7f6e\u7684USB，\u5747\u53ef\u652f\u6301USB 2.0\u6807\u51c6，\u53ef\u4ee5\u652f\u6301\u4e09\u79cd\u4f20\u8f93\u901f\u7387：<\/p>\n
- \u9ad8\u901f\u6a21\u5f0f：\u6700\u9ad8\u53ef\u8fbe480 Mbps\u00a0 （\u90e8\u5206\u578b\u53f7\u652f\u6301，\u4e14\u9700\u642d\u914d\u5916\u90e8\u82af\u7247，\u4e0d\u5e38\u7528 )<\/li>\n
- \u5168\u901f\u6a21\u5f0f：\u6700\u9ad8\u53ef\u8fbe12 Mbps\u00a0 \u00a0 \u00a0 (\u6700\u5e38\u7528）<\/li>\n
- \u4f4e\u901f\u6a21\u5f0f：\u6700\u9ad8\u53ef\u8fbe1.5 Mbps\u00a0 \u00a0 \u00a0<\/li>\n
\u9ad8\u901f\u6a21\u5f0f，\u9700\u8981\u642d\u914d\u5916\u56f4USB PHY\u82af\u7247，\u5982USB3300，\u786c\u4ef6\u6210\u672c\u504f\u9ad8 \u3002 \u5168\u901f\u6a21\u5f0f，\u7535\u8def\u5f88\u7b80\u5355\u3002\u4ece\u673a\u5728PCB\u5e03\u7ebf\u65f6，\u4ec5\u9700\u628aSTM32\u7684\u5f15\u811aPA11\u3001PA12,\u00a0 \u8fde\u63a5\u81f3USB\u5ea7\u7684DP\u3001DM，\u7136\u540e，PA12(DP\u7ebf)\u75281.5K\u7535\u963b\u4e0a\u62c9\u81f33.3V\u3002\u5177\u4f53\u5982\u4e0b\u56fe：<\/p>\n
<\/p>\n
\u4e0a\u62c9\u8bf4\u660e<\/p>\n
\u63d2\u62d4\u68c0\u6d4b：\u8bbe\u5907\u672a\u63d2\u5165\u65f6，\u4e3b\u673a\u7aefDP\u3001DM\u4e3a\u4f4e\u7535\u5e73，\u5f53\u53d1\u73b0\u88ab\u7f6e\u9ad8，\u5373\u4e3a\u6709\u8bbe\u5907\u63d2\u5165；<\/p>\n
\u533a\u5206\u901f\u7387：DM\u7ebf\u4e0a\u62c9\u662f\u4f4e\u901f\u6a21\u5f0f，DP\u7ebf\u4e0a\u62c9\u662f\u5168\u901f\\\\\u9ad8\u901f\u6a21\u5f0f；<\/p>\n
\u4e0a\u62c9\u7535\u538b：3.3V\u3002USB\u901a\u4fe1\u7535\u5e73\u662f3.3V，\u800c\u4e0d\u662f\u603b\u7ebf\u4f9b\u7535\u76845V\u3002<\/p>\n<\/p>\n
USB\u865a\u62df\u4e32\u53e3，\u7b80\u79f0VPC，Virtual Port Com \u7684\u7b80\u5199\u3002\u4f46\u66f4\u4e60\u60ef\u4e8e\u628a\u865a\u62df\u4e32\u53e3\u53eb\u4f5c: CDC，\u56e0\u4e3a\u5b83\u662f\u5229\u7528 USB \u7684 CDC\u7c7b \u5b9e\u73b0\u7684\u4e00\u79cd\u901a\u4fe1\u63a5\u53e3\u3002<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u5229\u7528STM32\u81ea\u5e26\u7684USB\u529f\u80fd，\u901a\u8fc7CubeMX\u7684\u914d\u7f6e，\u5f88\u65b9\u4fbf\u5730\u5b9e\u73b0\u4e00\u4e2aUSB\u865a\u62df\u4e32\u53e3，\u4ece\u800c\u901a\u8fc7USB\u7ebf，\u5b9e\u73b0\u7535\u8111\u4e0eSTM32\u7684\u6570\u636e\u4e92\u4f20\u3002<\/p>\n
\u54ea\u4e9bwin\u7cfb\u7edf\u652f\u6301\u865a\u62df\u4e32\u53e3？<\/p>\n
Win10\u3001Win11 \u5df2\u5e26\u865a\u62df\u4e32\u53e3\u9a71\u52a8；\u65e0\u9700\u5b89\u88c5\u4efb\u4f55\u9a71\u52a8;\u00a0<\/p>\n
Win7 \u8981\u63d0\u524d\u624b\u52a8\u5b89\u88c5\u9a71\u52a8，\u5426\u5219\u65e0\u6cd5\u8bc6\u522b ：\u865a\u62df\u4e32\u53e3\u9a71\u52a8 \u4e0b\u8f7d<\/p>\n
\n<\/h2>\n\u4e8c\u3001CubeMX \u65b0\u5efa\u5de5\u7a0b<\/span><\/h2>\n\u672c\u7bc7\u4e3a\u4e86\u5de5\u7a0b\u7684\u6e05\u6670，\u5c06\u4ece0\u5f00\u59cb， \u65b0\u5efa\u4e00\u4e2a\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u7684\u5de5\u7a0b\u3002<\/p>\n
\u65e5\u5e38\u505a\u9879\u76ee，\u4e0d\u5efa\u8bae\u65b0\u5efa，\u800c\u662f\u590d\u5236\u5df2\u6709\u7684\u65e7\u5de5\u7a0b，\u901a\u8fc7CubeMX\u589e\u5220\u9700\u8981\u7684\u529f\u80fd\u3002<\/p>\n
\u8fd9\u6837\u80fd\u51cf\u5c11\u4e00\u4e9b\u5e38\u7528\u529f\u80fd\u7684\u518d\u6b21\u914d\u7f6e，\u5982\u6309\u952e\u3001UART\u7b49；<\/p>\n
\u590d\u7528\u65e7\u5de5\u7a0b\u91cc\u5df2\u9a8c\u8bc1\u8fc7\u7684\u529f\u80fd，\u80fd\u6709\u6548\u5730\u51cf\u5c11\u5e38\u7528\u529f\u80fd\u7684\u8c03\u8bd5\u65f6\u95f4\u3002<\/p>\n<\/p>\n
1\u3001\u4ee5\u82af\u7247\u578b\u53f7\u65b0\u5efa<\/p>\n
<\/p>\n<\/p>\n
2\u3001\u641c\u7d22\u82af\u7247\u578b\u53f7<\/p>\n
<\/p>\n<\/p>\n
3\u3001\u8bbe\u7f6e\u8c03\u8bd5\u6a21\u5f0f<\/p>\n
\u8fdb\u5165\u914d\u7f6e\u9875\u9762\u540e，\u517b\u6210\u4e60\u60ef，\u4f18\u5148\u8bbe\u7f6e\u8c03\u8bd5\u6a21\u5f0f：Serial Wire\u3002<\/p>\n
<\/p>\n<\/p>\n
4\u3001\u9009\u62e9\u6676\u632f\u6e90<\/p>\n
\u5916\u90e8\u9ad8\u901f\u6676\u632f\u6e90(HSE)：Crystal\/Ceramic Resonator<\/p>\n
<\/p>\n<\/p>\n
5\u3001USB\u5de5\u4f5c\u6a21\u5f0f<\/p>\n
USB_OTG_FS：\u9009\u62e9 Device_Only;\u00a0 \u8bbe\u5907\u6a21\u5f0f(\u4ece\u673a\u6a21\u5f0f);\u00a0 \u00a0\u5176\u5b83\u53c2\u6570，\u9ed8\u8ba4\u3002<\/p>\n
\u6709\u4e9b\u82af\u7247\u578b\u53f7，\u5982F103\u7cfb\u5217，CubeMX\u4e0a\u7684\u663e\u793a\u662f：USB_FS，\u914d\u7f6e\u6b65\u9aa4\u662f\u4e00\u6837\u7684\u3002<\/p>\n
<\/p>\n<\/p>\n
6\u3001\u4e2d\u95f4\u4ef6\u7ec4\u4ef6<\/p>\n
USB_DEVICE：\u9009\u62e9 CDC (VPC)；\u00a0 \u5176\u5b83\u53c2\u6570，\u9ed8\u8ba4;<\/p>\n
<\/p>\n<\/p>\n
6\u3001\u914d\u7f6e\u7cfb\u7edf\u65f6\u949f<\/p>\n
\u2460\u00a0\u5f53\u542f\u7528USB\u529f\u80fd\u540e，\u8fdb\u5165\u65f6\u949f\u914d\u7f6e\u9875\u9762\u65f6，\u5f39\u7a97：\u00a0\u662f\u5426\u81ea\u52a8\u914d\u7f6e\u7cfb\u7edf\u65f6\u949f?\u00a0 \u9009\u62e9：No \u3002<\/p>\n
<\/p>\n<\/p>\n
\u2461\u00a0\u5148\u786e\u8ba4\u677f\u4e0a\u7684\u6676\u632f\u503c<\/p>\n
\n- \u914d\u7f6e\u65f6\u949f\u524d，\u5f88\u91cd\u8981\u7684\u4e00\u4e2a\u4e8b：\u5148\u6838\u5bf9\u5f00\u53d1\u677f\u4e0a\u7684\u6676\u632f\u9891\u7387（\u5728\u6676\u632f\u4e0a\u7684\u6570\u5b57）！<\/li>\n
- \u6676\u632f\u9891\u7387\u914d\u7f6e\u9519\u8bef\u65f6，\u7f16\u8bd1\u4e0d\u4f1a\u62a5\u9519，\u4f46\u7cfb\u7edf\u53ef\u80fd\u4e0d\u8fd0\u884c\u3001\u901a\u4fe1\u9519\u4e71\u7b49，\u540e\u671f\u6392\u67e5\u5f88\u8d39\u65f6\u95f4！<\/li>\n
- \u76ee\u524dSTM32\u7684\u677f\u5b50，\u5e38\u7528\u7684\u5916\u90e8\u9ad8\u901f\u6676\u632f\u6709\u4e09\u79cd：8M\u300112M\u300125M\u3002<\/li>\n<\/ul>\n
<\/p>\n<\/p>\n
\u2462\u00a0STM32F103 \u65f6\u949f\u914d\u7f6e：<\/p>\n
\n\u6676\u632f\u503c\u8f93\u5165\u5206\u9891\u8f93\u51fa\u500d\u9891USB\u5206\u9891APB1\u5206\u9891APB2\u5206\u9891\u7cfb\u7edf\u00a0\u65f6\u949f<\/tr>\n \n\n8<\/td>\n 1<\/td>\n 9<\/td>\n 1.5<\/td>\n 2<\/td>\n 1<\/td>\n 72MHz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/p>\n<\/p>\n
\u2463\u00a0STM32F4xx \u65f6\u949f\u914d\u7f6e：<\/p>\n
\u6ce8\u610f：F4\u7cfb\u5217，\u5404\u677f\u5546\u7565\u6709\u4e0d\u540c，\u5927\u90e8\u5206\u662f25M,\u00a0\u5c11\u90e8\u5206\u662f8M，\u4f7f\u7528\u6548\u679c\u4e00\u6837\u3002<\/p>\n
\n\u6676\u632f\u503c\u8f93\u5165\u5206\u9891\u8f93\u51fa\u500d\u9891\u8f93\u51fa\u5206\u9891USB\u5206\u9891APB1\u5206\u9891APB2\u5206\u9891\u7cfb\u7edf\u65f6\u949f<\/tr>\n \n\n25<\/td>\n 25<\/td>\n 336<\/td>\n 2<\/td>\n 7<\/td>\n 4<\/td>\n 2<\/td>\n 168MHz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/p>\n<\/p>\n
7\u3001\u5de5\u7a0b\u914d\u7f6e<\/p>\n
<\/p>\n
\n- \u5de5\u7a0b\u540d\u79f0\u3001\u8def\u5f84，\u8fd9\u4e24\u9879，\u5fc5\u987b\u82f1\u6587\u3002\u5426\u5219，\u751f\u6210\u7684\u5de5\u7a0b\u5c06\u4f1a\u7f3a\u5c11\u542f\u52a8\u6587\u4ef6<\/li>\n
- \u5f00\u53d1\u5de5\u5177：MDK-ARM,\u00a0 \u5373\u751f\u6210Keil\u5de5\u7a0b\u00a0<\/li>\n
- \u5806\u5927\u5c0f，\u5efa\u8bae：0x400<\/li>\n
- \u6808\u5927\u5c0f，\u5efa\u8bae：0x1000<\/li>\n<\/ul>\n<\/p>\n
8\u3001\u6587\u4ef6\u548c\u4ee3\u7801\u7684\u914d\u7f6e<\/p>\n
<\/p>\n<\/p>\n
9\u3001\u751f\u6210<\/p>\n
<\/p>\n<\/p>\n
\u7a0d\u7b49\u00a0\u7247\u523b：<\/p>\n
<\/p>\n<\/p>\n
\u751f\u6210\u7684\u5de5\u7a0b\u6587\u4ef6\u5939：<\/p>\n
<\/p>\n
Keil\u5de5\u7a0b\u7684\u5165\u53e3\u6587\u4ef6：<\/p>\n
<\/p>\n<\/p>\n
\n<\/h2>\n<\/h2>\n\u4e09\u3001Keil \u5de5\u7a0b\u914d\u7f6e<\/span><\/h2>\n<\/p>\n\u6309\u4e0a\u8ff0，\u53cc\u51fb\u6253\u5f00Keil\u5de5\u7a0b\u3002<\/p>\n
1\u3001\u65b0\u5efa\u7684\u5de5\u7a0b，\u9700\u8981\u8bbe\u7f6e\u4e00\u6b21\u4eff\u771f\u5668\u53c2\u6570 \u3002（\u70b9\u51fb OK \u4fdd\u5b58，\u5426\u5219\u65e0\u6548）\u3002<\/p>\n
<\/p>\n<\/p>\n
2\u3001\u914d\u7f6e\u5e38\u7528\u7684\u8c03\u8bd5\u9009\u9879<\/p>\n
\u4e0b\u9762\u8fd9\u4e24\u9879\u662f\u975e\u5fc5\u8981\u7684，\u5efa\u8bae\u6253\u52fe\u4f7f\u7528；\u7f16\u8bd1\u540e\u751f\u6548; \u6253\u52fe\u4f1a\u4ee4\u7f16\u8bd1\u901f\u5ea6\u53d8\u6162；<\/p>\n
<\/p>\n
\n- Debug Infomation: \u751f\u6210\u8c03\u8bd5\u4fe1\u606f\u3002debug\u6a21\u5f0f\u4e2d\u65e0\u6cd5\u8bbe\u7f6e\u65ad\u70b9，\u5c31\u662f\u8fd9\u4e2a\u9009\u9879\u6ca1\u6253\u52fe\u3002<\/li>\n
- Bowse Infomation: \u751f\u6210\u8ffd\u8e2a\u4fe1\u606f\u3002\u5982，\u53f3\u51fb\u51fd\u6570\u3001\u53d8\u91cf，\u70b9\u51fb\u5f39\u51fa\u83dc\u5355：Go To Definition…<\/li>\n<\/ul>\n
\u00a03\u3001\u7f16\u8bd1 \u9a8c\u8bc1<\/p>\n
\n- 0\u00a0Error，\u6b63\u7a0b\u6b63\u5e38\u3002<\/li>\n
- \u6709 Error，\u5931\u8d25；\u5e94\u8be5\u662f (2-7) \u90a3\u4e00\u6b65\u5de5\u7a0b\u540d\u79f0\u3001\u8def\u5f84\u6709\u4e2d\u6587\u3002\u4fee\u6539\u540e\u91cd\u65b0\u751f\u6210\u5373\u53ef\u3002<\/li>\n
- \u5148\u522b\u70e7\u5f55，\u522b\u70e7\u5f55，\u522b\u70e7\u5f55\u3002<\/li>\n<\/ul>\n
<\/p>\n<\/p>\n
\n\u56db\u3001\u5b9e\u73b0USB\u6a21\u62df\u63d2\u62d4<\/span><\/h2>\n<\/p>\n\u901a\u8fc7 CubeMX\u00a0\u914d\u7f6e\u540e\u751f\u6210\u7684\u5de5\u7a0b，\u5b83\u5df2\u5e26\u9700\u8981\u7684\u521d\u59cb\u5316\u4ee3\u7801\u3001\u914d\u7f6e\u4ee3\u7801\u3001\u57fa\u7840\u51fd\u6570\u7b49\u3002<\/p>\n
\u6211\u4eec\u53ea\u9700\u5728\u5de5\u7a0b\u91cc，\u6309\u9700\u8fdb\u884c\u7b80\u5355\u7684\u914d\u7f6e\u3001\u4fee\u6539\u4ee3\u7801，\u5373\u53ef\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\u00a01\u3001\u5305\u542b USB\u63a5\u53e3\u00a0\u7684\u5934\u6587\u4ef6<\/p>\n
\n- \u6253\u5f00 main.c\u6587\u4ef6，\u5927\u7ea6\u7b2c26\u884c，\u914d\u5bf9\u7684\u00a0\/*\u00a0USER CODE ……\u00a0Includes *\/\u00a0<\/span>\u6ce8\u91ca\u4e4b\u95f4,<\/li>\n
- \u6dfb\u52a0：#include\u00a0 "usbd_cdc_if.h"<\/li>\n<\/ul>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n<\/p>\n
2\u3001\u589e\u52a0 USB\u6a21\u62df\u63d2\u62d4 <\/p>\n
\u6211\u4eec\u5728\u8c03\u8bd5STM32\u7a0b\u5e8f\u671f\u95f4，\u9700\u8981\u53cd\u590d\u5730\u00a0\u4fee\u6539\u7a0b\u5e8f\u3001\u7f16\u8bd1\u3001\u70e7\u5f55;\u00a0 \u8fd9\u662f\u5e38\u89c4\u64cd\u4f5c，\u7528\u4e8e\u8c03\u8bd5\u5176\u5b83\u901a\u4fe1\u6a21\u5757，\u5982DHT11\u3001ESP8266\u7b49，\u662f\u6ca1\u6709\u95ee\u9898\u7684，\u4f46\u7528\u4e8e\u8c03\u8bd5USB\u7684\u901a\u4fe1，\u5c31\u4f1a\u7ffb\u8f66\u3002<\/p>\n
\u5f53\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf\u4e00\u76f4\u63d2\u5728USB\u53e3\u4e0a，\u7a0b\u5e8f\u91cd\u65b0\u70e7\u5f55\u540e，\u7a0b\u5e8f\u7684\u91cd\u65b0\u8fd0\u884c，\u5c06\u5bfc\u81f4\u901a\u4fe1\u9519\u8bef\u3001USB\u7aef\u53e3"\u5047\u6b7b"\u7b49\u73b0\u8c61;\u00a0<\/p>\n
\u4e0a\u6587\u4e2d\u5df2\u4ecb\u7ecd，\u7535\u8111\u7aefUSB\u53e3\u6ca1\u6709\u63d2\u5165\u8bbe\u5907\u65f6，DP\u548cDM\u7ebf，\u662f\u4f4e\u7535\u5e73\u72b6\u6001，\u800c\u8bbe\u5907\u7aef\u7684DP\u7ebf，\u67091.5K\u7535\u963b\u4e0a\u62c9\u52303.3V，\u5f53\u8bbe\u5907\u63d2\u5165\u5230\u7535\u8111USB\u53e3，USB\u53e3\u7684DP\u7ebf\u5c31\u4f1a\u88ab\u7f6e\u9ad8\u7535\u5e73，\u4e3b\u673a\u662f\u4f9d\u9760\u8fd9\u4e2a\u673a\u5236\u5224\u65ad\u8bbe\u5907\u662f\u5426\u63d2\u5165\u3001\u62d4\u51fa，\u7ee7\u800c\u89e6\u53d1\u4e0d\u540c\u7684\u52a8\u4f5c，\u5982\u679a\u4e3e\u3001\u91ca\u653e\u7aef\u53e3\u7b49\u3002<\/p>\n
\u5f53\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf\u4e00\u76f4\u63d2\u5728USB\u53e3\u4e0a，\u5728STM32\u70e7\u5f55\u7a0b\u5e8f\u91cd\u65b0\u8fd0\u884c\u540e，\u7a0b\u5e8f\u91cc\u7684USB\u4ee3\u7801\u7b49\u5f85\u7740\u4e3b\u673a\u65b9\u53d1\u8d77\u679a\u4e3e\u8fc7\u7a0b；\u800c\u8fd9\u4e2a\u671f\u95f4\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf\u6ca1\u6709\u65ad\u5f00，\u4e3b\u673a\u65b9\u8ba4\u4e3a\u8bbe\u5907\u65b9\u4e00\u76f4\u5728\u7ebf，\u65e9\u5df2\u679a\u4e3e\u6210\u529f，\u4e00\u76f4\u5bf9\u5176\u8f6e\u8be2\u6570\u636e\u6536\u53d1\u3002\u53cc\u65b9\u201c\u5357\u8f95\u5317\u8f99，\u80e1\u8a00\u4e71\u8bed\u201d，\u6ce8\u5b9a\u7ffb\u8f66\u3002<\/p>\n
\u6b63\u5e38\u64cd\u4f5c\u662f：\u6bcf\u6b21\u70e7\u5f55\u524d，\u5148\u628a\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf\u62d4\u4e0b\u6765，\u70e7\u5f55\u597d\u4e86，\u518d\u63d2\u4e0a，……\u3002<\/p>\n
\u4e3a\u4e86\u907f\u514d\u8c03\u8bd5\u671f\u95f4\u9891\u7e41\u5730\u624b\u52a8\u64cd\u4f5c，\u6211\u4eec\u53ef\u4ee5\u5728\u7a0b\u5e8f\u5f00\u8dd1\u540e\u3001USB\u521d\u59cb\u5316\u524d，\u7528\u4ee3\u7801\u628aPA12\u7f6e\u4f4e，\u4f7fD+\u7ebf\u4e3a\u4f4e\u7535\u5e73，\u6301\u7eed\u4e00\u6bb5\u65f6\u95f4，\u6a21\u62dfUSB\u62d4\u51fa\u52a8\u4f5c，\u4ee4\u4e3b\u673a\u8ba4\u4e3a\u8bbe\u5907\u5df2\u65ad\u5f00\u8fde\u63a5，\u91ca\u653e\u7aef\u53e3; \u7136\u540e，\u5f53\u7a0b\u5e8f\u8fd0\u884c\u5230\u540e\u9762\u7684USB\u521d\u59cb\u5316\u51fd\u6570\u65f6，PA12\u4f1a\u88ab\u6b63\u5e38\u914d\u7f6e（DP\u7ebf\u7535\u5e73\u88ab\u7f6e\u9ad8)，USB\u4e3b\u673a\u5c31\u4f1a"\u53d1\u73b0"\u6709\u8bbe\u5907\u63d2\u5165，\u5f00\u59cb\u5c1d\u8bd5\u679a\u4e3e\u3001\u914d\u7f6e;<\/p>\n
\u5177\u4f53\u64cd\u4f5c：<\/p>\n
\n- \u6253\u5f00\u00a0usbd_conf.c\u00a0\u6587\u4ef6，\u5927\u7ea6\u7b2c70\u884c\u9644\u8fd1，\u627e\u5230HAL_PCD_MspInit ( )\u51fd\u6570;<\/li>\n
- \u5728\u4e24\u5bf9 \/* USER … 0 *\/\u00a0\u6ce8\u91ca\u4e4b\u95f4，\u7ea675\u884c，\u6dfb\u52a0PA12\u5f15\u811a\u7f6e\u4f4e\u7535\u5e73\u64cd\u4f5c,\u00a0 \u5982\u4e0b（\u53ef\u590d\u5236）:<\/li>\n<\/ul>\n
__HAL_RCC_GPIOA_CLK_ENABLE(); \/\/ \u4f7f\u80fdGPIOA\u7aef\u53e3
\n GPIO_InitTypeDef GPIO_InitStruct = {0}; \/\/ \u58f0\u660e\u7ed3\u6784\u4f53; \u5982\u679c\u4e0e\u6587\u4e2d\u4f4d\u7f6e\u76f8\u540c，\u8fd9\u884c\u53ef\u4e0d\u5199
\n GPIO_InitStruct.Pin = GPIO_PIN_12; \/\/ \u5f15\u811aPA12, \u5373D+
\n GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; \/\/ \u5f15\u811a\u5de5\u4f5c\u6a21\u5f0f
\n GPIO_InitStruct.Pull = GPIO_PULLDOWN; \/\/ \u4e0b\u62c9
\n GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; \/\/ \u5f15\u811a\u53cd\u8f6c\u901f\u5ea6
\n HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); \/\/ \u521d\u59cb\u5316
\n HAL_Delay(5); \/\/ \u6301\u7eed\u7247\u523b <\/p>\n
\u6ce8\u610f，\u6700\u540e\u4e00\u884c\u7684\u5ef6\u65f6，\u662f\u5fc5\u987b\u7684，\u5efa\u8bae\u57285ms\u5de6\u53f3;<\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n
\u589e\u52a0\u8fd9\u6bb5\u4ee3\u7801\u540e，\u518d\u65e0\u9700\u624b\u52a8\u63d2\u62d4\u00a0\u865a\u62df\u4e32\u53e3\u7684USB\u00a0\u7ebf\u4e86，\u7a0b\u5e8f\u5c06\u6a21\u62df \u201c\u00a0\u65ad\u5f00\u3001\u63d2\u5165\u201d;<\/p>\n
\u518d\u6b21\u7f16\u8bd1，\u786e\u4fdd\u4e0a\u8ff0\u64cd\u4f5c\u6b63\u5e38 （\u5148\u522b\u70e7\u5f55）\u3002<\/p>\n<\/p>\n
\n<\/h2>\n<\/h2>\n\u4e94\u3001\u53d1\u9001<\/span><\/h2>\n<\/p>\n\u53d1\u9001\u6570\u636e\u7684\u51fd\u6570<\/p>\n
uint8_t CDC_Transmit_FS ( uint8_t* Buf, uint16_t Len ); <\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u51fd\u6570\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570：\u6570\u636e\u7f13\u51b2\u533a\u7684\u5730\u5740\u3001\u5b57\u8282\u6570\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u679cUSB\u8bbe\u5907\u6b63\u5fd9，\u5b83\u4f1a\u8fd4\u56deUSBD_BUSY\u72b6\u6001\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u4e2a\u51fd\u6570\u7684\u4f5c\u7528\u662f\u8bbe\u7f6e\u4f20\u8f93\u6570\u636e\u7684\u7f13\u51b2\u533a，\u5e76\u6807\u8bb0\u6570\u636e\u5305\u4e3a\u5f85\u53d1\u9001\u3002\u6570\u636e\u5e76\u975e\u7acb\u523b\u53d1\u51fa，\u800c\u662f\u88ab\u5b58\u50a8\u5728USB\u5916\u8bbe\u7684\u7f13\u51b2\u533a\u4e2d，\u7b49\u5f85\u4e3b\u673a\u8f6e\u8be2\u8bf7\u6c42\u4f20\u8f93\u3002<\/p>\n<\/p>\n
\u53d1\u9001\u793a\u8303\u64cd\u4f5c<\/p>\n
\n- \u5728main.c\u00a0\u7684 while\u00a0\u5faa\u73af\u4e2d，\u6dfb\u52a0\u4e09\u884c\u6d4b\u8bd5\u4ee3\u7801：1\u884c\u5ef6\u65f6\u3001\u4e24\u884c\u53d1\u9001\u6570\u636e;<\/li>\n<\/ul>\n
\u6ce8\u610f：\u662f\u5171\u4e09\u884c，1\u884c\u5ef6\u65f6，2\u884c\u53d1\u9001\u3002<\/p>\n
\u8bf7\u4e25\u683c\u6309\u7167\u8fd9\u4e09\u884c\u6765\u5199，\u56e0\u4e3a\u6211\u4eec\u8981\u987a\u5e26\u5b9e\u73b0\u4e00\u4e2abug,\u00a0 \u7136\u540e\u4e0b\u9762\u65b9\u4fbf\u89e3\u91ca\u5177\u4f53\u539f\u56e0！<\/p>\n
<\/p>\n
\u65b0\u624b，\u60f3\u7701\u65f6\u95f4，\u5c31\u8bf7\u6309\u6b65\u9aa4\u64cd\u4f5c\u00a0：<\/p>\n
\n- \u5148\u522b\u63d2\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf<\/li>\n
- \u7f16\u8bd1\u3001\u70e7\u5f55\u4ee3\u7801<\/li>\n
- \u6253\u5f00\u4e32\u53e3\u52a9\u624b, （\u8fd9\u65f6\u662f\u6ca1\u6709\u63d2\u865a\u62df\u4e32\u53e3USB\u7ebf\u7684），\u67e5\u770b\u76ee\u524d\u6709\u54ea\u4e9b\u7aef\u53e3\u53f7<\/li>\n
- \u63d2\u5165\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf，\u5230\u5f00\u53d1\u677f\u7684 USB-Slave\u63a5\u53e3\u00a0<\/li>\n
- ( \u524d\u63d0：win10\u300111\u7cfb\u7edf\u5df2\u5e26\u865a\u62df\u4e32\u53e3\u9a71\u52a8; win7\u8981\u624b\u52a8\u5b89\u88c5\u9a71\u52a8：\u865a\u62df\u4e32\u53e3\u4e0b\u8f7d)<\/li>\n
- ( \u7535\u8111\u4f1a\u81ea\u52a8\u8bc6\u522b\u5230\u8bbe\u5907；\u5982\u679c\u662f\u7b2c\u4e00\u6b21\u4f7f\u7528\u865a\u62df\u4e32\u53e3，\u7535\u8111\u5c06\u81ea\u52a8\u5b89\u88c5\u9a71\u52a8\u7a0b\u5e8f)<\/li>\n
- \u68c0\u67e5\u4e32\u53e3\u52a9\u624b，\u53d1\u73b0\u591a\u4e86\u4e00\u4e2a\u7aef\u53e3\u53f7， \u9009\u62e9\u5b83，\u6ce2\u7279\u7387\u7b49\u53c2\u6570\u4e0d\u7528\u4fee\u6539，\u6253\u5f00\u7aef\u53e3;<\/li>\n<\/ul>\n
\u63a5\u7ebf，\u5982\u4e0b\u56fe（\u793a\u4f8b\u6240\u7528\u7684\u5f00\u53d1\u677f）：<\/p>\n
\n- \u5de6\u4fa7\u4e3a\u7528\u6237USB\u63a5\u53e3，\u5df2\u8fde\u63a5PA11\u3001PA12，\u6211\u4eec\u5c31\u662f\u7528\u8fd9\u4e2aU\u53e3\u5b9e\u73b0\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u3002<\/li>\n
- \u53f3\u4fa7\u662f\u677f\u8f7d\u4eff\u771f\u5668CMSIS DAP\u7684\u63a5\u53e3，\u5b83\u81ea\u5e26\u4e86USB\u8f6cTTL\u529f\u80fd\u3002<\/li>\n<\/ul>\n
<\/p>\n
\u6ce8\u610f\u7aef\u53e3\u7684\u9009\u62e9：<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u5f53\u4f7f\u7528\u7684\u5f00\u53d1\u677f，\u5df2\u5e26USB\u8f6cTTL\u529f\u80fd，\u5982\u4e0a\u9762\u8fd9\u4e2a\u3002\u5728\u70e7\u5f55\u865a\u62df\u4e32\u53e3\u7684\u7a0b\u5e8f\u540e，\u4e32\u53e3\u52a9\u624b\u4f1a\u6709\u81f3\u5c11\u4e24\u4e2a\u7aef\u53e3\u53f7：\u677f\u5b50\u81ea\u5e26\u7684USB\u8f6cTTL（\u53f3\u4fa7）\u3001\u7a0b\u5e8f\u5b9e\u73b0\u7684\u865a\u62df\u4e32\u53e3（\u5de6\u4fa7），\u6ce8\u610f\u4e0d\u8981\u9009\u62e9\u9519\u4e86\u3002<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u5982\u679c\u4e0d\u77e5\u9053\u54ea\u6839\u7ebf\u5bf9\u5e94\u54ea\u4e2a\u7aef\u53e3：\u5728\u70e7\u5f55\u540e，\u62d4\u4e00\u4e0bUSB\u7ebf，\u770b\u770b\u54ea\u4e2a\u7aef\u53e3\u6d88\u5931\u4e86\u3002<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u53e6\u4e00\u65b9\u6cd5，\u6709\u4e9b\u4e32\u53e3\u52a9\u624b\u7684\u7aef\u53e3\u5217\u8868，\u80fd\u663e\u793a\u8bbe\u5907\u4fe1\u606f，\u627e\u5230\u5e26\u201cSTM…\u201d\u63cf\u8ff0\u7684\u90a3\u4e2a\u3002<\/p>\n<\/p>\n
\u73b0\u5728\u80fd\u770b\u5230，\u4e32\u53e3\u52a9\u624b\u80fd\u63a5\u6536\u5230\u7a0b\u5e8f\u6301\u7eed\u53d1\u51fa\u7684\u6570\u636e\u4e86！<\/p>\n
\u6548\u679c\u5982\u4e0b\u56fe：<\/p>\n
<\/p>\n
\n<\/p>\n\u516d\u3001\u53d1\u9001\u4f18\u5316（\u8fde\u7eed\u53d1\u9001）<\/span><\/h2>\n<\/p>\n\u4e0a\u8282\u7684\u53d1\u9001，\u5b9e\u73b0\u65f6，\u53ea\u80fd\u6536\u5230\u7b2c\u4e00\u884c"Hello"，\u800c\u7b2c\u4e8c\u884c\u53d1\u51fa\u7684\u6570\u636e:"\u501f\u70b9\u94b1 "\u5374\u6ca1\u6536\u5230！！<\/p>\n
\u4e0d\u662f\u6ca1\u6536\u5230\u3002\u5176\u5b9e，\u4eceSTM32\u7a0b\u5e8f\u7684\u89d2\u5ea6，\u662f\u6ca1\u6709\u53d1\u51fa\u6570\u636e！<\/p>\n
\u5148\u8bf4\u8bf4，USB\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u7684\u51e0\u4e2a\u91cd\u70b9 (\u7279\u6307：USB2.0\u3001\u5168\u901f\u6a21\u5f0f\u3001\u4e2d\u65ad\u4f20\u8f93）：<\/p>\n
\n- USB\u662f\u8f6e\u8be2\u673a\u5236，\u4e3b\u673a\u5bf9\u8bbe\u5907\u4e0d\u65ad\u8f6e\u8be2，\u95f4\u9694\u6700\u5c0f1ms；\u4e0d\u662f\u56fa\u5b9a\u76841ms,\u00a0 \u662f\u6700\u5c0f\u95f4\u9694\u65f6\u95f4;<\/li>\n
- USB\u7684\u6570\u636e，\u662f\u6309\u5305\u4f20\u8f93\u7684;\u00a0<\/li>\n
- \u6bcf\u4e2a\u8bbe\u5907，\u6bcf1ms，\u6700\u591a\u4f20\u8f931\u5305\u6570\u636e;<\/li>\n
- \u6bcf\u5305\u6700\u591a64\u5b57\u8282（\u6709\u6548\u8d1f\u8f7d）;<\/li>\n<\/ul>\n
\u518d\u8bf4\u8bf4，CDC_Transmit_FS ( )\u00a0\u51fd\u6570：<\/p>\n
\n- \u5b83\u7684\u7b2c2\u4e2a\u53c2\u6570，"\u5b57\u8282\u6570"，\u8303\u56f4：0~2048;\u00a0\u8fd9\u4e2a2048\u53ef\u4ee5\u5728CubeMX\u91cc\u8fdb\u884c\u8bbe\u7f6e\u5927\u5c0f;\u00a0<\/li>\n
- \u5b57\u8282\u6570 <= 64，\u7b971\u5305\u3002\u5982：\u53d13\u4e2a\u5b57\u8282，\u4e5f\u7b971\u5305\u3002<\/li>\n
- \u5b57\u8282\u6570 == 0，\u4e5f\u7b971\u5305\u3002\u4fd7\u79f0：\u7a7a\u5305; \u5982\u679c\u4e0a\u4e00\u5e27\u521a\u597d\u53d1\u900164\u5b57\u8282，\u518d\u53d1\u4e00\u4e2a\u7a7a\u5305\u4f5c\u4e3a\u7ed3\u675f\u5305;<\/li>\n
- \u5b57\u8282\u6570 >\u00a064，\u00a0CDC_Transmit_FS ( )\u00a0\u80cc\u540e\u6709\u7f13\u5b58，\u5b83\u81ea\u52a8\u5206\u5305，1ms\u5de6\u53f3\u53d11\u5305，\u76f4\u81f3\u53d1\u5b8c;<\/li>\n
- \u5982\u679c\u4e0a\u4e00\u5305\u8fd8\u6ca1\u53d1\u5b8c，\u518d\u6b21\u8c03\u7528CDC_Transmit_FS ( ) ，\u5c06\u653e\u5f03\u672c\u6b21\u8c03\u7528\u3002<\/li>\n<\/ul>\n
\u4e0a\u9762while\u5faa\u73af\u4e2d，\u8fde\u7eed\u3001\u4e24\u6b21\u8c03\u7528CDC_Transmit_FS ( ) .<\/p>\n
\n- \u7b2c1\u6b21\u8c03\u7528，\u5c06\u6b63\u5e38\u53d1\u51fa\u4e00\u5305\u6570\u636e;<\/li>\n
- \u7b2c2\u6b21\u8c03\u7528，\u518d\u53d1\u9001\u4e00\u5305\u3002\u4f46\u662f，\u4e24\u5305\u6ca1\u6709\u95f4\u96941ms\u4ee5\u4e0a，\u5bfc\u81f4\u4e86\u7b2c2\u6b21\u7684\u53d1\u9001，\u88ab\u820d\u5f03\u4e86\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u5148\u6253\u5f00\u00a0CDC_Transmit_FS ( )\u00a0\u51fd\u6570，\u770b\u770b\u51fd\u6570\u539f\u578b\u3002<\/p>\n
\u5728\u4ee3\u7801\u4e2d，\u53f3\u51fbCDC_Transmit_FS ( ) ，\u5f39\u51fa\u83dc\u5355，\u9009\u62e9Go To Definition…，\u5c06\u8df3\u8f6c\u5230\u51fd\u6570\u4f4d\u7f6e;<\/p>\n
\u6216\u8005，\u5728\u5de6\u4fa7\u6587\u4ef6\u6811\u4e2d，\u53cc\u51fb\u6253\u5f00usbd_cdc_if.c\u00a0\u6587\u4ef6 ，CDC_Transmit_FS ( ) \u4f4d\u4e8e\u5927\u7ea6280\u884c\u00a0;<\/p>\n
\u7279\u522b\u6ce8\u610f：<\/span><\/p>\nusbd_cdc_if.c\u00a0\u662f\u5e94\u7528\u5c42\u6587\u4ef6，\u6211\u4eec\u5bf9\u6536\u3001\u53d1\u6709\u5565\u7279\u6b8a\u9700\u6c42，\u901a\u8fc7\u4fee\u6539\u6587\u4ef6\u91cc\u7684\u53d1\u9001\u51fd\u6570\u3001\u63a5\u6536\u56de\u8c03\u51fd\u6570\u3001\u7c7b\u8bf7\u6c42\u51fd\u6570，\u57fa\u672c\u90fd\u80fd\u5b9e\u73b0\u3002<\/p>\n
\u4e0b\u56fe，\u662f\u00a0CDC_Transmit_FS ( )\u00a0\u51fd\u6570\u622a\u56fe\u3002<\/p>\n
\u7ea2\u6846\u7684\u4ee3\u7801\u4f5c\u7528\u662f：\u5f53\u8bbe\u5907\u5fd9\u65f6，\u76f4\u63a5\u653e\u5f03\u53d1\u9001,：<\/p>\n
<\/p>\n<\/p>\n
\u4fee\u6539：<\/p>\n
\n- \u6ce8\u91ca\u6389\u521a\u624d if\u00a0\u4f53\u76843\u884c\u4ee3\u7801;<\/li>\n
- \u589e\u52a0\u7b49\u5f85\u53d1\u9001\u7a7a\u95f2\u3001\u5224\u65ad\u8d85\u65f6，\u5982\u4e0b6\u884c;<\/li>\n
- \u6574\u4e2aCDC_Transmit_FS ( ) \u51fd\u6570，\u5982\u4e0b:（\u53ef\u590d\u5236）<\/li>\n<\/ul>\n
uint8_t CDC_Transmit_FS(uint8_t *Buf, uint16_t Len)
\n{
\n uint8_t result = USBD_OK;
\n \/* USER CODE BEGIN 7 *\/<\/p>\n
USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)hUsbDeviceFS.pClassData; \/\/ \u83b7\u5f97\u8bbe\u5907\u7684\u72b6\u6001\u4fe1\u606f\u7ed3\u6784\u4f53
\n \/\/ if (hcdc->TxState != 0){
\n \/\/ return USBD_BUSY;
\n \/\/ }
\n uint32_t timeStart = HAL_GetTick();
\n while (hcdc->TxState)
\n {
\n if (HAL_GetTick() – timeStart > 20)
\n return USBD_BUSY;
\n }<\/p>\n
USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
\n result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);<\/p>\n
\/* USER CODE END 7 *\/
\n return result;
\n} <\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50：<\/p>\n<\/p>\n
\u518d\u6b21\u7f16\u8bd1\u3001\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u4e32\u53e3\u52a9\u624b，\u73b0\u5728\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n
\u8fde\u7eed\u53d1\u9001\u5df2\u5b9e\u73b0\u4e86\u3002<\/p>\n
\u4e0a\u8ff0\u65b9\u6cd5\u80fd\u591f\u89e3\u51b3\u8fde\u7eed\u53d1\u9001\u5931\u8d25\u7684\u95ee\u9898\u3002<\/p>\n
\u4f46\u5b83\u5b58\u5728\u4e00\u4e2a\u663e\u8457\u7f3a\u70b9：\u7531\u4e8e\u5176\u963b\u585e\u6027\u8d28，\u9891\u5bc6\u8fde\u7eed\u53d1\u9001\u65f6，\u5c06\u5bfc\u81f4\u8fd0\u884c\u201c\u6b7b\u7b49\u201d，\u5f71\u54cd\u7a0b\u5e8f\u6548\u7387\u3002<\/p>\n
（\u5bf9\u4e8e\u5927\u90e8\u5206\u573a\u666f，\u4e0a\u8ff0\u65b9\u6cd5\u5df2\u8db3\u591f\u3002\u672c\u8282\u5185\u5bb9，\u53ea\u662f\u4e3a\u4f60\u9884\u57cb\u4e00\u79cd\u5907\u7528\u601d\u8def，\u65e0\u9700\u6b7b\u78d5\u3002）<\/p>\n
\u5982\u679c\u9879\u76ee\u5bf9\u5b9e\u65f6\u6027\u6709\u8f83\u9ad8\u7684\u8981\u6c42，\u53ef\u4ee5\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528\u53d1\u9001\u6570\u636e\u51fd\u6570 CDC_Transmit_FS() \u548c\u53d1\u9001\u5b8c\u6210\u56de\u8c03\u51fd\u6570 CDC_TransmitCplt_FS() \u6765\u63d0\u9ad8\u4f20\u8f93\u6548\u7387\u3002CDC_TransmitCplt_FS() \u4f1a\u5728 CDC_Transmit_FS() \u51fd\u6570\u53d1\u9001\u6570\u636e\u5b8c\u6bd5\u540e\u81ea\u52a8\u88ab\u8c03\u7528\u3002<\/p>\n
\u6839\u636e\u8fd9\u4e24\u4e2a\u51fd\u6570\u7684\u7279\u70b9，\u53ef\u4ee5\u8bbe\u8ba1\u4e00\u5957\u9ad8\u6548\u7684\u53d1\u9001\u7f13\u5b58\u673a\u5236\u3002\u4f8b\u5982，\u53ef\u4ee5\u7ef4\u62a4\u4e00\u4e2a\u53d1\u9001\u961f\u5217，\u5f53 CDC_Transmit_FS() \u5b8c\u6210\u53d1\u9001\u540e，CDC_TransmitCplt_FS() \u88ab\u8c03\u7528\u65f6，\u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u4e0b\u4e00\u4e2a\u6570\u636e\u9879\u8fdb\u884c\u53d1\u9001，\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u6570\u636e\u4f20\u8f93\u7684\u8fde\u7eed\u6027\u3002<\/p>\n
\u8fd9\u4e2a\u53d1\u9001\u5b8c\u6210\u56de\u8c03\u51fd\u6570 CDC_TransmitCplt_FS() ，\u4f4d\u4e8e\u53d1\u9001\u51fd\u6570 CDC_Transmit_FS() \u7684\u6b63\u4e0b\u65b9\u3002<\/p>\n
\u81f3\u4e8e\u5177\u4f53\u7684\u4ee3\u7801\u5b9e\u73b0，\u4e0d\u540c\u9879\u76ee\u9700\u6c42\u5404\u5f02，\u65e0\u6cd5\u63d0\u4f9b\u4e00\u4e2a\u901a\u7528\u7684\u89e3\u51b3\u65b9\u6848\u3002\u56e0\u6b64，\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u9879\u76ee\u9700\u6c42，\u8fdb\u884c\u9488\u5bf9\u6027\u7684\u8bbe\u8ba1\u548c\u4f18\u5316，\u4e0d\u80fd\u4e00\u836f\u6cbb\u767e\u75c5\u3002<\/p>\n
\n<\/h2>\n<\/h2>\n\u4e03\u3001\u63a5\u6536<\/span><\/h2>\n<\/p>\n1\u3001\u63a5\u6536\u65b9\u5f0f\u7684\u7b80\u8ff0<\/p>\n
\u5f53USB CDC\u63a5\u6536\u5230\u6765\u81eaUSB\u4e3b\u673a\u7684\u6570\u636e\u65f6，\u89e6\u53d1\u4e2d\u65ad\u8fdb\u5165\u4e2d\u65ad\u51fd\u6570，\u7ee7\u800c\u81ea\u52a8\u8c03\u7528\u63a5\u6536\u56de\u8c03\u51fd\u6570:<\/p>\n
int8_t\u00a0 CDC_Receive_FS\u00a0(uint8_t* Buf, uint32_t *Len);\u00a0\u00a0 <\/p>\n
\n- uint8_t* Buf:\u00a0 \u00a0\u6307\u5411\u63a5\u6536\u7f13\u51b2\u533a\u7684\u6307\u9488，\u5373\u6570\u636e\u7f13\u5b58\u7684\u5730\u5740\u3002<\/li>\n
- uint16_t* Len: \u5f53\u524d\u6570\u636e\u5305\u7684\u5b57\u8282\u6570\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u5c31\u5728\u8fd9\u4e2a\u56de\u8c03\u51fd\u6570\u91cc，\u5904\u7406\u63a5\u6536\u5230\u7684\u6570\u636e！<\/p>\n
\u5b83\u5728\u00a0usbd_cdc_if.c \u6587\u4ef6，\u4f4d\u4e8e\u53d1\u9001\u51fd\u6570\u7684\u6b63\u4e0a\u65b9；<\/p>\n
\u51fd\u6570\u5185\u90e8，\u751f\u6210\u7684\u4ee3\u7801\u91cc，\u53ea\u67092\u884c\u6267\u884c\u4ee3\u7801，\u6307\u5b9a\u4e0b\u6b21\u63a5\u6536\u7684\u5b58\u653e\u4f4d\u7f6e;\u00a0 \u5982\u4e0b\u56fe\u6240\u793a：<\/p>\n
\u800c\u672c\u6b21\u6240\u63a5\u6536\u5230\u7684\u6570\u636e，\u8be5\u5982\u4f55\u5904\u7406，\u9700\u8981\u6211\u4eec\u81ea\u884c\u6dfb\u52a0\u4ee3\u7801\u3002<\/p>\n
<\/p>\n<\/p>\n
\u63a5\u6536\u673a\u5236\u6ce8\u610f\u4e8b\u9879：<\/p>\n
\n- \u6bcf\u5f53\u63a5\u6536\u5230\u4e00\u5305\u6570\u636e，\u786c\u4ef6\u81ea\u52a8\u89e6\u53d1\u4e2d\u65ad\u51fd\u6570，\u00a0\u7ee7\u800c\u8c03\u7528\u6b64\u63a5\u6536\u56de\u8c03\u51fd\u6570，\u65e0\u9700\u4eba\u5de5\u8c03\u7528\u3002<\/li>\n
- \u4e0e\u53d1\u9001\u673a\u5236\u76f8\u4f3c，\u6bcf\u95f4\u96941ms，\u6700\u591a\u63a5\u65361\u5305\u6570\u636e，\u6bcf\u5305\u6700\u592764\u5b57\u8282\u3002\u3002<\/li>\n
- \u5982\u679c\u9700\u8981\u63a5\u6536\u8d85\u8fc764\u5b57\u8282\u7684\u6570\u636e\u5e27，\u6ce8\u610f，\u6307\u4e0a\u4f4d\u673a\u53d1\u9001\u76841\u4e2a\u5b8c\u6574\u6570\u636e\u5e27，\u800c\u975eUSB\u7684\u5355\u5305\u6570\u636e，\u5982，\u4e0a\u4f4d\u673a\u53d1\u6765\u4e00\u5f20\u56fe\u7247\u6570\u636e，8350\u4e2a\u5b57\u8282，\u5219\u9700\u8981\u5728\u6b64\u56de\u8c03\u51fd\u6570\u4e2d\u6dfb\u52a0\u989d\u5916\u7684\u4ee3\u7801\u6765\u5224\u65ad\u5e27\u6570\u636e\u4f20\u8f93\u5b8c\u6574\u7ed3\u675f \u3001\u624b\u52a8\u5c06\u591a\u4e2a\u6570\u636e\u5305\u62fc\u63a5\u6210\u5b8c\u6574\u7684\u6570\u636e\u5e27\u3002<\/li>\n
- \u63a5\u6536\u5230\u6570\u636e\u65f6，\u7f13\u5b58\u4e0d\u4f1a\u63d0\u524d\u81ea\u52a8\u6e05\u96f6，\u65b0\u6570\u636e\u4eceBuf\u7684\u8d77\u59cb\u4f4d\u7f6e\u5f00\u59cb，\u8986\u76d6\u5b58\u653e\u3002<\/li>\n
- \u7531\u4e8e\u8be5\u56de\u8c03\u51fd\u6570\u662f\u88ab\u4e2d\u65ad\u51fd\u6570\u8c03\u7528\u7684，\u56e0\u6b64\u5efa\u8bae\u51fd\u6570\u5185\u90e8\u7684\u5904\u7406\u5c3d\u53ef\u80fd\u5730\u7b80\u77ed，\u4ee5\u907f\u514d\u5f71\u54cd\u7cfb\u7edf\u7684\u5b9e\u65f6\u6027（\u4e2d\u65ad\u51fd\u6570\u8fd0\u884c\u671f\u95f4，\u4f1a\u4ee4\u7a0b\u5e8f\u6301\u7eed\u6302\u8d77）\u3002<\/li>\n<\/ul>\n
2\u3001\u63a5\u6536\u793a\u8303<\/p>\n
\u672c\u8282\u5c06\u793a\u8303：<\/p>\n
\n- \u901a\u8fc7\u4e32\u53e3\u52a9\u624b，\u53d1\u9001\u5b57\u7b26\u4e32\u00a0<\/li>\n
- STM32（\u8bbe\u5907\u7aef）\u6536\u5230\u6570\u636e\u540e，\u628a\u6536\u5230\u7684\u5b57\u8282\u6570\u3001\u5b57\u7b26\u4e32，\u53d1\u56de\u4e32\u53e3\u52a9\u624b\u663e\u793a（\u4e3b\u673a\u7aef）<\/li>\n<\/ul>\n
\u5728\u51fd\u6570\u5185\u7684\u6ce8\u91ca\u884c\u00a0 \/* USER CODE BEGIN *\/\u00a0 \u4e0b\u65b9，\u6dfb\u52a04\u884c\u81ea\u5b9a\u4e49\u4ee3\u7801（\u53ef\u590d\u5236）\u3002<\/p>\n
char myStr[64] = {0}; \/\/ \u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4，\u7528\u4e8e\u5b58\u653e\u8981\u8f93\u51fa\u7684\u5b57\u7b26\u4e32
\n sprintf(myStr, "\\\\r\\\\r\u6536\u5230 %d \u4e2a\u5b57\u8282；\\\\r\u5185\u5bb9\u662f：%s\\\\r\\\\r", *Len, (char *)Buf); \/\/ \u683c\u5f0f\u5316\u5b57\u7b26\u4e32
\n CDC_Transmit_FS((uint8_t *)myStr, strlen(myStr)); \/\/ \u53d1\u9001
\n memset(Buf, 0, 64); \/\/ \u5904\u7406\u5b8c\u6570\u636e，\u6e050\u63a5\u6536\u7f13\u5b58;<\/p>\n
\u6ce8\u610f：<\/p>\n
\n- \u7528char\u00a0\u58f0\u660emyStr[ ],\u00a0\u662f\u56e0\u4e3a\u6b64\u5904\u60f3\u628a\u5b83\u4f5c\u4e3a\u4e00\u6bb5\u5b57\u7b26\u4e32\u7a7a\u95f4;<\/li>\n
- sprintf\u662fC\u8bed\u8a00\u6807\u51c6\u8f93\u5165\u8f93\u51fa\u5e93\u7684\u51fd\u6570，\u5982\u679c\u62a5\u9519\u6ca1\u6709\u8fd9\u4e2a\u51fd\u6570，\u5c31：#include <stdio.h><\/li>\n
- \u83b7\u53d6\u5b57\u8282\u6570，\u662f*Len，\u800c\u4e0d\u662fLen;\u00a0 \u56e0\u4e3a\u5b83\u5728\u51fd\u6570\u53c2\u6570\u91cc\u7684\u58f0\u660e，\u662f\u4e00\u4e2a\u6307\u9488;<\/li>\n
- \u4e3a\u4e86\u683c\u5f0f\u5316\u6210\u5b57\u7b26\u4e32，Buf\u7528\u4e86(char*)\u8fdb\u884c\u5f3a\u5236\u8f6c\u6362\u6210\u5b57\u7b26\u7c7b\u578b;\u00a0<\/li>\n
- CDC_Transmit_FS( )\u91cc，\u7528\u4e86strlen\u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u5b57\u8282\u6570，\u5b83\u53ea\u5bf9\u5b57\u7b26\u4e32\u6709\u6548，\u5bf9\u5176\u5b83\u6570\u636e\u7c7b\u578b\u65e0\u6548;\u00a0 \u5982\u679c\u62a5\u9519\u6ca1\u6709\u8fd9\u4e2a\u51fd\u6570，\u5c31：#include\u00a0 <string.h><\/li>\n
- \u5982\u679c\u4f20\u8f93\u7684\u662f16\u8fdb\u5236\u6570，\u7528uint8_t\u00a0\u58f0\u660e\u4e0a\u9762\u6570\u7ec4，\u7136\u540e\u4fee\u6539sprintf\u7684\u683c\u5f0f\u5316\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n
\u6dfb\u52a0\u5b8c\u6210\u540e，\u6587\u4ef6\u662f\u8fd9\u6837\u5b50\u7684：<\/p>\n
<\/p>\n<\/p>\n
\u518d\u6b21\u7f16\u8bd1\u3001\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u4e32\u53e3\u52a9\u624b，\u6253\u5f00\u5bf9\u5e94\u7684\u7aef\u53e3\u53f7（\u6ce2\u7279\u7387\u7b49\u53c2\u6570\u4e0d\u7528\u4fee\u6539），<\/p>\n
\u5728\u53d1\u9001\u533a，\u4ee5ASCII\u65b9\u5f0f，\u53d1\u9001\u5b57\u7b26\u4e32（\u56e0\u4e3a\u6dfb\u52a0\u7684\u4ee3\u7801\u91cc\u7528%s\u683c\u5f0f\u5316，\u5904\u7406\u7684\u662f\u5b57\u7b26\u4e32)，<\/p>\n
\u7136\u540e，\u4e32\u53e3\u52a9\u624b\u7684\u63a5\u6536\u533a，\u9a6c\u4e0a\u80fd\u63a5\u6536\u5230\u521a\u624d\u53d1\u51fa\u7684\u6570\u636e！<\/p>\n
\u81f3\u6b64，\u5df2\u5b9e\u73b0\u63a5\u6536\u7684\u5904\u7406\u3002<\/p>\n
<\/p>\n
\n<\/p>\n\u516b\u3001\u63a5\u6536\u4f18\u5316（\u5728\u5916\u90e8\u5904\u7406\u6570\u636e）<\/span><\/h2>\n<\/p>\n\u4e0a\u9762，\u6211\u4eec\u5df2\u5b9e\u73b0：\u83b7\u53d6\u3001\u4f7f\u7528\u63a5\u6536\u5230\u7684\u6570\u636e\u3002<\/p>\n
\u5728\u63a5\u6536\u56de\u8c03\u51fd\u6570\u4e2d，\u76f4\u63a5\u64cd\u4f5c\u6570\u636e\u7684\u53d1\u9001，\u901a\u5e38\u662f\u5b89\u5168\u7684，\u56e0\u4e3a\u8fd9\u79cd\u64cd\u4f5c\u8017\u65f6\u975e\u5e38\u77ed，\u6700\u591a\u7b49\u5f851\u6b21\u4e3b\u673a\u8f6e\u8be2\u5468\u671f（1ms）\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b，\u4e0d\u4f1a\u5bf9\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u6570\u636e\u63a5\u6536\u9020\u6210\u663e\u8457\u5f71\u54cd\u3002<\/p>\n
\u4f46\u662f，\u5982\u679c\u5728\u63a5\u6536\u56de\u8c03\u51fd\u6570\u4e2d\u6267\u884c\u8017\u65f6\u8f83\u957f\u7684\u64cd\u4f5c，\u5982\u663e\u793a\u5230LCD\u6216\u5b58\u50a8\u5230Flash\u7b49，\u8fd9\u4e9b\u64cd\u4f5c\u53ef\u80fd\u9700\u8981\u6570\u6beb\u79d2\u5230\u6570\u5341\u6beb\u79d2\u624d\u80fd\u5b8c\u6210\u3002\u8017\u65f6\u8f83\u957f\u7684\u64cd\u4f5c，\u53ef\u80fd\u4f1a\u5bfc\u81f4\u63a5\u6536\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u6f0f\u5305\u73b0\u8c61\u3002<\/p>\n
\u56e0\u4e3a\u63a5\u6536\u56de\u8c03\u51fd\u6570\u662f\u7531USB\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u8c03\u7528\u7684，\u5c5e\u4e8e\u4e2d\u65ad\u5904\u7406\u7684\u4e00\u90e8\u5206，\u5728\u56de\u8c03\u51fd\u6570\u6267\u884c\u671f\u95f4，\u4e3b\u7a0b\u5e8f\u8fd8\u5904\u4e8e\u4e2d\u65ad\u6302\u8d77\u72b6\u6001，\u5176\u4ed6\u4ee3\u7801\u548c\u4e2d\u65ad\u4e5f\u4f1a\u88ab\u6682\u505c\u6267\u884c，\u5f62\u8c61\u5730\u63cf\u8ff0：\u201c\u5361\u6b7b\u201d\u3002<\/p>\n
\u5982\u679c\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u7684\u6267\u884c\u64cd\u4f5c\u8f83\u8017\u65f6，\u4f1a\u5bfc\u81f4\u4e0b\u4e00\u5305\u6570\u636e\u65e0\u6cd5\u53ca\u65f6\u8fdb\u5165\u4e2d\u65ad，\u4ece\u800c\u9020\u6210\u6570\u636e\u4e22\u5931\u3002<\/p>\n
\u4e3e\u4f8b\u8bf4\u660e：<\/p>\n
\n- A (\u7535\u8111USB\u4e3b\u673a)\u6bcf\u96941ms\u6254\u51fa1\u679a\u9e21\u86cb，B(STM32\u4e2d\u65ad\u670d\u52a1\u51fd\u6570）\u8d1f\u8d23\u63a5\u9e21\u86cb\u3002<\/li>\n
- \u5f53B\u63a5\u9e21\u86cb\u5904\u7406\u5f97\u6bd4A\u5feb，\u5373\u6bd4A\u6254\u51fa\u7684\u95f4\u9694\u66f4\u77ed，\u59820.5ms，\u90a3，\u6ca1\u95ee\u9898\u3002<\/li>\n
- \u4f46\u662f，\u5f53B\u63a5\u9e21\u86cb\u7684\u5904\u7406\u65f6\u95f4\u8f83\u957f，\u5982，\u63a5\u4e86\u9e21\u86cb\u8fd8\u8981\u5199\u4e0a\u4ef7\u683c，\u518d\u653e\u7f6e\u5230\u8d27\u67b6，\u517120ms，\u00a0\u90a3\u80af\u5b9a\u5c31\u63a5\u4e0d\u4f4fA\u6301\u7eed\u6254\u8fc7\u6765\u7684\u9e21\u86cb\u4e86，\u6bcf\u63a51\u4e2a，\u5c31\u4f1a\u4e22\u5931\u540e\u9762\u768419\u4e2a，\u518d\u63a51\u4e2a，\u518d\u4e22\u593119\u4e2a…….;\u00a0\u6ce8\u610f，A\u662f\u4e0d\u7ba1B\u662f\u5426\u6570\u636e\u4e22\u5305\u7684，\u5b83\u53ea\u8d1f\u8d23\u6bcf1ms\u6254(\u53d1\u9001)\u4e00\u6b21\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u9700\u8981\u91c7\u53d6\u4e00\u79cd\u7b56\u7565，\u4f7f\u5f97\u7a0b\u5e8f\u7684\u4e2d\u65ad\u54cd\u5e94\u3001\u201c\u5361\u6b7b\u201d\u5360\u65f6，\u5c3d\u53ef\u80fd\u5730\u77ed：<\/p>\n
\n- \u63a5\u6536\u6570\u636e：\u5728\u4e2d\u65ad\u56de\u8c03\u51fd\u6570\u4e2d，\u6211\u4eec\u4ec5\u6267\u884c\u5fc5\u8981\u7684\u6570\u636e\u590d\u5236\u64cd\u4f5c，\u5373\u628a\u63a5\u6536\u5230\u7684\u6570\u636e\u8fc5\u901f\u590d\u5236\u5230\u5916\u90e8\u7f13\u5b58\u4e2d\u3002\u8fd9\u4e00\u64cd\u4f5c\u7684\u8017\u65f6\u901a\u5e38\u5728us\u7ea7\u522b;<\/li>\n
- \u5904\u7406\u6570\u636e：\u5728\u4e3b\u7a0b\u5e8f\u7684while\u5faa\u73af\u4e2d，\u6211\u4eec\u518d\u5bf9\u6570\u636e\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u5904\u7406\u3002\u7531\u4e8e\u8fd9\u4e00\u5904\u7406\u8fc7\u7a0b\u4e0d\u5360\u7528\u4e2d\u65ad\u8d44\u6e90，\u56e0\u6b64\u4e0d\u4f1a\u5f71\u54cd\u7a0b\u5e8f\u5bf9\u65b0\u6570\u636e\u7684\u63a5\u6536;<\/li>\n<\/ul>\n
\u8fd9\u79cd\u7b56\u7565\u901a\u8fc7\u5206\u79bb\u6570\u636e\u63a5\u6536\u548c\u6570\u636e\u5904\u7406\u4e24\u4e2a\u6b65\u9aa4，\u786e\u4fdd\u4e86\u7a0b\u5e8f\u80fd\u591f\u5feb\u901f\u54cd\u5e94\u8fde\u7eed\u7684\u6570\u636e\u6d41，\u540c\u65f6\u907f\u514d\u4e86\u56e0\u5904\u7406\u65f6\u95f4\u8fc7\u957f\u800c\u5bfc\u81f4\u7684\u6570\u636e\u4e22\u5931\u3002<\/p>\n<\/p>\n
\u64cd\u4f5c\u51714\u4e2a\u6b65\u9aa4，\u5177\u4f53\u5982\u4e0b：<\/p>\n
1\u3001\u589e\u52a0\u5168\u5c40\u53d8\u91cf<\/p>\n
\u5728usbd_cdc_if.c\u6587\u4ef6\u5927\u7ea697\u884c，\u914d\u5bf9\u7684\u6ce8\u91ca\u5185，\u5b9a\u4e49\u4e24\u4e2a\u53d8\u91cf：<\/p>\n
\/* USER CODE BEGIN PRIVATE_VARIABLES *\/
\nuint8_t myUsbRxData[64] = { 0 }; \/\/ \u63a5\u6536\u5230\u7684\u6570\u636e
\nuint16_t myUsbRxNum = 0; \/\/ \u63a5\u6536\u5230\u7684\u5b57\u8282\u6570<\/p>\n
\/* USER CODE END PRIVATE_VARIABLES *\/ <\/p>\n
\u73b0\u5728，\u5b83\u4fe9\u53ea\u662f\u672c\u5730\u53d8\u91cf，\u7b49\u4f1a\u8981\u5728main\u4e2d\u7528extern\u518d\u58f0\u660e\u4e00\u6b21，\u624d\u80fd\u88ab\u5916\u90e8\u8c03\u7528\u3002<\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n<\/p>\n
2\u3001\u4fee\u6539\u63a5\u6536\u56de\u8c03\u51fd\u6570<\/p>\n
\u5728CDC_Receive_FS()\u00a0\u91cc，\u5220\u9664\u6211\u4eec\u4e0a\u8282\u589e\u52a0\u7684\u6d4b\u8bd5\u4ee3\u7801;<\/p>\n
\u628aBuf\u548c*Len\u7684\u6570\u636e，\u590d\u5236\u5230\u6211\u4eec\u521a\u624d\u7684\u4e24\u4e2a\u53d8\u91cf\u91cc\u3002\u51fd\u6570\u4fee\u6539\u6210：<\/p>\n
static int8_t CDC_Receive_FS(uint8_t *Buf, uint32_t *Len)
\n{
\n \/* USER CODE BEGIN 6 *\/
\n \/\/ \u628aBuf\u91cc\u9762\u7684\u6570\u636e，\u590d\u5236\u5230\u5916\u90e8\u7f13\u5b58
\n memset(myUsbRxData, 0, 64); \/\/ \u6e050\u7f13\u5b58\u533a
\n memcpy(myUsbRxData, Buf, *Len); \/\/ \u628a\u63a5\u6536\u5230\u7684\u6570\u636e，\u590d\u5236\u5230\u81ea\u5df1\u7684\u7f13\u5b58\u533a\u4e2d
\n myUsbRxNum = *Len; \/\/ \u590d\u5236\u5b57\u8282\u6570
\n memset(Buf, 0, 64); \/\/ \u5904\u7406\u5b8c\u6570\u636e，\u6e050\u63a5\u6536\u7f13\u5b58; <\/p>\n
\/\/ CubeMX\u751f\u6210\u7684\u4ee3\u7801，\u4fdd\u7559
\n USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]); \/\/ \u8bbe\u7f6e\u4e0b-\u4e2a\u63a5\u6536\u7f13\u51b2\u533a
\n USBD_CDC_ReceivePacket(&hUsbDeviceFS); \/\/ \u542f\u52a8\u4e0b\u4e00\u4e2a\u6570\u636e\u5305\u7684\u63a5\u6536
\n return (USBD_OK);
\n \/* USER CODE END 6 *\/
\n} <\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n
\u73b0\u5728，\u6570\u636e\u63a5\u6536\u90e8\u5206，\u5df2\u5904\u7406\u597d\u4e86\u3002<\/p>\n
\u4ee5\u540e\u56de\u8c03\u51fd\u6570\u8fd0\u884c\u65f6，\u53ea\u590d\u5236\u6570\u636e\u81f3\u5916\u90e8\u7f13\u5b58（\u5907\u7528），\u4e2d\u65ad\u65f6\u95f4\u5360\u7528\u6781\u77ed，\u4e0d\u4f1a\u5f71\u54cd\u4e0b\u5305\u63a5\u6536\u3002<\/p>\n<\/p>\n
3\u3001 \u5728\u5916\u90e8\u7528extern\u58f0\u660e\u53d8\u91cf，\u4ee4\u5916\u90e8\u53ef\u8c03\u7528\u6570\u636e<\/p>\n
\u5916\u90e8，\u54ea\u4e2a\u6587\u4ef6\u91cc\u8981\u4f7f\u7528CDC\u63a5\u6536\u7684\u6570\u636e，\u5c31\u5728\u8fd9\u4e2a\u6587\u4ef6\u91cc，\u7528extern\u58f0\u660e\u90a3\u4fe9\u53d8\u91cf\u3002<\/p>\n
\u5982，\u53ef\u4ee5\u5728LCD\u6587\u4ef6，\u4e5f\u53ef\u4ee5\u5728SD\u5361\u7684\u6587\u4ef6\u4e2d，\u90fd\u884c\u3002<\/p>\n
\u5efa\u8bae\u5728main.h\u6587\u4ef6\u4e2d\u58f0\u660e，\u5176\u5b83\u6587\u4ef6\u518d#include "main.h"，\u8fd9\u6837，\u53ef\u4ee5\u4ee4\u53d8\u91cf\u5168\u5c40\u53ef\u7528\u3002<\/p>\n
\n- \u6253\u5f00 main.c，\u53f3\u51fb\u7a7a\u767d，\u70b9\u51fb"Toggle\u00a0Header\/Code File"，\u53ef\u4ee5\u8df3\u8f6c\u5230\u5934\u6587\u4ef6：main.h\u00a0\u00a0<\/li>\n<\/ul>\n
<\/p>\n<\/p>\n
\u5728main.h\u4e2d，\u5927\u7ea638\u884c，\u627e\u5230\u00a0\u914d\u5bf9\u7684\u6ce8\u91ca\u884c\u00a0\/* USER CODE BEGIN ET *\/<\/p>\n
\u7528 extern\u00a0\u518d\u6b21\u58f0\u660e\u521a\u624d\u4e24\u4e2a\u53d8\u91cf\u3002\u5982\u4e0b（\u53ef\u590d\u5236）：<\/p>\n
\u6ce8\u610f，\u662f\u53ea\u58f0\u660e，\u4e0d\u8981\u8d4b\u503c，\u5426\u5219\u7f16\u8bd1\u9519\u8bef\u3002<\/p>\n
\/* USER CODE BEGIN ET *\/
\nextern uint8_t myUsbRxData[ ] ;
\nextern uint16_t myUsbRxNum ;<\/p>\n
\/* USER CODE END ET *\/ <\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n
\u4ee3\u7801\u89c4\u8303：<\/span> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u91cc\u7684\u793a\u8303，\u4f7f\u7528\u5168\u5c40\u53d8\u91cf，\u53ea\u662f\u4e3a\u4e86\u66f4\u6e05\u6670\u5730\u6f14\u793a\u64cd\u4f5c\u601d\u8def\u3002<\/p>\n\u00a0 \u00a0 \u00a0 \u00a0 \u9879\u76ee\u4e2d，\u5c3d\u91cf\u907f\u514d\u4f7f\u7528\u5168\u5c40\u53d8\u91cf；\u4e0d\u540c\u6587\u4ef6\u95f4\u7684\u6570\u636e\u83b7\u53d6，\u53ef\u4ee5\u5c01\u88c5\u6210\u51fd\u6570，\u5982 CDC_GetRxData()\u3001CDC_GetRxNum()，\u8fd4\u56de\u6570\u636e\u5730\u5740\u3001\u63a5\u6536\u7684\u5b57\u8282\u6570\u3002\u00a0\u00a0\u00a0\u00a0<\/p>\n<\/p>\n
4\u3001\u4f7f\u7528\u63a5\u6536\u5230\u6570\u636e<\/p>\n
\u5728main.c\u7684while\u5faa\u73af\u4e2d，\u901a\u8fc7\u5224\u65admyUsbRxNum\u7684\u503c，\u53ea\u8981\u5927\u4e8e0，\u5c31\u8868\u793a\u6536\u5230\u6570\u636e\u4e86<\/p>\n
\u8bb0\u5f97\u6bcf\u6b21\u5904\u7406\u5b8c\u6570\u636e，\u628amyUsbRxNum\u7f6e0，\u4ee5\u4fbf\u4e8e\u4e0b\u4e00\u8f6e\u7684\u5224\u65ad\u3002<\/p>\n
<\/p>\n
\u518d\u6b21\u70e7\u5f55，\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u6253\u5f00\u4e32\u53e3\u52a9\u624b，\u53d1\u9001\u6d4b\u8bd5\u6587\u672c，\u53ef\u4ee5\u53d1\u73b0，\u80fd\u6210\u529f\u6536\u5230STM32\u53d1\u8fc7\u6765\u7684\u56de\u4f20\u6570\u636e\u3002<\/p>\n
<\/p>\n<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u679c，\u5916\u90e8\u5904\u7406\u6570\u636e\u7684\u901f\u5ea6\u8ddf\u4e0d\u4e0a，\u5982，\u5728while\u91cc\u6bcf\u6b21\u6536\u5230\u6570\u636e\u90fd\u8981\u663e\u793a\u5230LCD，LCD\u7684\u901f\u5ea6\u8fdc\u6162\u4e8eUSB\u7684\u4f20\u8f93，\u90a3，\u8fd8\u4e0d\u662f\u53d8\u76f8\u4e22\u4e86\u6570\u636e？！\u662f\u7684，\u4f1a\u6709\u8fd9\u79cd\u60c5\u51b5！<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u4f46，\u90a3\u5df2\u7ecf\u662f\u7a0b\u5e8f\u903b\u8f91\u548c\u65f6\u95f4\u7247\u673a\u5236\u7684\u95ee\u9898\u4e86，3\u59293\u591c\u4e5f\u55d1\u4e0d\u5b8c！<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u672c\u8282\u53ea\u8ba8\u8bba：\u786e\u4fdd\u6bcf\u4e00\u5305\u6570\u636e，\u90fd\u80fd\u88ab\u6b63\u5e38\u63a5\u6536\u5230\u3002\u5916\u90e8\u80fd\u5426\u53ca\u65f6\u5904\u7406，\u4e0d\u8ff0\u3002<\/p>\n<\/p>\n
\u81f3\u6b64，\u672c\u7bc7\u5b8c\u7ed3\u3002<\/p>\n
\u5982\u6709\u9519\u6f0f，\u671b\u7559\u8a00\u6307\u6b63，\u53ca\u65f6\u66f4\u65b0！！<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb2.4w\u6b21\uff0c\u70b9\u8d5e164\u6b21\uff0c\u6536\u85cf499\u6b21\u3002\u901a\u8fc7CubeMX + Keil\uff0c\u914d\u7f6eSTM32\u4f5c\u4e3aUSB\u8bbe\u5907\u7aef\uff0c\u4e0e\u7535\u8111\u8fdb\u884c\u901a\u4fe1\uff08CDC\uff09\uff1b\u901a\u7528\u5e26USB\u529f\u80fd\u7684 STM32 \u82af\u7247 \uff08\u5982F1\u3001F4\u7b49\uff0c\u7cfb\u7edf\u65f6\u949f\u914d\u7f6e\u4e0d\u540c\uff0c\u4ee3\u7801\u901a\u7528\uff09\u3002_stm32 usb<\/p>\n","protected":false},"author":2,"featured_media":43139,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[4006,4008,217,4010,4009,4007],"topic":[],"class_list":["post-43159","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-hal-stm32-cubemx-","tag-cdc","tag-stm32","tag-stm32f407","tag-usb","tag-4007"],"yoast_head":"\n
STM32 - USB\u865a\u62df\u4e32\u53e3\u901a\u4fe1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/43159.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"STM32 - USB\u865a\u62df\u4e32\u53e3\u901a\u4fe1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb2.4w\u6b21\uff0c\u70b9\u8d5e164\u6b21\uff0c\u6536\u85cf499\u6b21\u3002\u901a\u8fc7CubeMX + Keil\uff0c\u914d\u7f6eSTM32\u4f5c\u4e3aUSB\u8bbe\u5907\u7aef\uff0c\u4e0e\u7535\u8111\u8fdb\u884c\u901a\u4fe1\uff08CDC\uff09\uff1b\u901a\u7528\u5e26USB\u529f\u80fd\u7684 STM32 \u82af\u7247 \uff08\u5982F1\u3001F4\u7b49\uff0c\u7cfb\u7edf\u65f6\u949f\u914d\u7f6e\u4e0d\u540c\uff0c\u4ee3\u7801\u901a\u7528\uff09\u3002_stm32 usb\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/43159.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-11T00:55:52+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005546-6848d412b1be7.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/43159.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/43159.html\",\"name\":\"STM32 - 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\u9ad8\u901f\u6a21\u5f0f，\u9700\u8981\u642d\u914d\u5916\u56f4USB PHY\u82af\u7247，\u5982USB3300，\u786c\u4ef6\u6210\u672c\u504f\u9ad8 \u3002 \u5168\u901f\u6a21\u5f0f，\u7535\u8def\u5f88\u7b80\u5355\u3002\u4ece\u673a\u5728PCB\u5e03\u7ebf\u65f6，\u4ec5\u9700\u628aSTM32\u7684\u5f15\u811aPA11\u3001PA12,\u00a0 \u8fde\u63a5\u81f3USB\u5ea7\u7684DP\u3001DM，\u7136\u540e，PA12(DP\u7ebf)\u75281.5K\u7535\u963b\u4e0a\u62c9\u81f33.3V\u3002\u5177\u4f53\u5982\u4e0b\u56fe：<\/p>\n
<\/p>\n
\u4e0a\u62c9\u8bf4\u660e<\/p>\n
\u63d2\u62d4\u68c0\u6d4b：\u8bbe\u5907\u672a\u63d2\u5165\u65f6，\u4e3b\u673a\u7aefDP\u3001DM\u4e3a\u4f4e\u7535\u5e73，\u5f53\u53d1\u73b0\u88ab\u7f6e\u9ad8，\u5373\u4e3a\u6709\u8bbe\u5907\u63d2\u5165；<\/p>\n
\u533a\u5206\u901f\u7387：DM\u7ebf\u4e0a\u62c9\u662f\u4f4e\u901f\u6a21\u5f0f，DP\u7ebf\u4e0a\u62c9\u662f\u5168\u901f\\\\\u9ad8\u901f\u6a21\u5f0f；<\/p>\n
\u4e0a\u62c9\u7535\u538b：3.3V\u3002USB\u901a\u4fe1\u7535\u5e73\u662f3.3V，\u800c\u4e0d\u662f\u603b\u7ebf\u4f9b\u7535\u76845V\u3002<\/p>\n<\/p>\n
USB\u865a\u62df\u4e32\u53e3，\u7b80\u79f0VPC，Virtual Port Com \u7684\u7b80\u5199\u3002\u4f46\u66f4\u4e60\u60ef\u4e8e\u628a\u865a\u62df\u4e32\u53e3\u53eb\u4f5c: CDC，\u56e0\u4e3a\u5b83\u662f\u5229\u7528 USB \u7684 CDC\u7c7b \u5b9e\u73b0\u7684\u4e00\u79cd\u901a\u4fe1\u63a5\u53e3\u3002<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u5229\u7528STM32\u81ea\u5e26\u7684USB\u529f\u80fd，\u901a\u8fc7CubeMX\u7684\u914d\u7f6e，\u5f88\u65b9\u4fbf\u5730\u5b9e\u73b0\u4e00\u4e2aUSB\u865a\u62df\u4e32\u53e3，\u4ece\u800c\u901a\u8fc7USB\u7ebf，\u5b9e\u73b0\u7535\u8111\u4e0eSTM32\u7684\u6570\u636e\u4e92\u4f20\u3002<\/p>\n
\u54ea\u4e9bwin\u7cfb\u7edf\u652f\u6301\u865a\u62df\u4e32\u53e3？<\/p>\n
Win10\u3001Win11 \u5df2\u5e26\u865a\u62df\u4e32\u53e3\u9a71\u52a8；\u65e0\u9700\u5b89\u88c5\u4efb\u4f55\u9a71\u52a8;\u00a0<\/p>\n
Win7 \u8981\u63d0\u524d\u624b\u52a8\u5b89\u88c5\u9a71\u52a8，\u5426\u5219\u65e0\u6cd5\u8bc6\u522b ：\u865a\u62df\u4e32\u53e3\u9a71\u52a8 \u4e0b\u8f7d<\/p>\n
\n
<\/h2>\n\u4e8c\u3001CubeMX \u65b0\u5efa\u5de5\u7a0b<\/span><\/h2>\n\u672c\u7bc7\u4e3a\u4e86\u5de5\u7a0b\u7684\u6e05\u6670，\u5c06\u4ece0\u5f00\u59cb， \u65b0\u5efa\u4e00\u4e2a\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u7684\u5de5\u7a0b\u3002<\/p>\n
\u65e5\u5e38\u505a\u9879\u76ee，\u4e0d\u5efa\u8bae\u65b0\u5efa，\u800c\u662f\u590d\u5236\u5df2\u6709\u7684\u65e7\u5de5\u7a0b，\u901a\u8fc7CubeMX\u589e\u5220\u9700\u8981\u7684\u529f\u80fd\u3002<\/p>\n
\u8fd9\u6837\u80fd\u51cf\u5c11\u4e00\u4e9b\u5e38\u7528\u529f\u80fd\u7684\u518d\u6b21\u914d\u7f6e，\u5982\u6309\u952e\u3001UART\u7b49；<\/p>\n
\u590d\u7528\u65e7\u5de5\u7a0b\u91cc\u5df2\u9a8c\u8bc1\u8fc7\u7684\u529f\u80fd，\u80fd\u6709\u6548\u5730\u51cf\u5c11\u5e38\u7528\u529f\u80fd\u7684\u8c03\u8bd5\u65f6\u95f4\u3002<\/p>\n<\/p>\n
1\u3001\u4ee5\u82af\u7247\u578b\u53f7\u65b0\u5efa<\/p>\n
<\/p>\n<\/p>\n
2\u3001\u641c\u7d22\u82af\u7247\u578b\u53f7<\/p>\n
<\/p>\n<\/p>\n
3\u3001\u8bbe\u7f6e\u8c03\u8bd5\u6a21\u5f0f<\/p>\n
\u8fdb\u5165\u914d\u7f6e\u9875\u9762\u540e，\u517b\u6210\u4e60\u60ef，\u4f18\u5148\u8bbe\u7f6e\u8c03\u8bd5\u6a21\u5f0f：Serial Wire\u3002<\/p>\n
<\/p>\n<\/p>\n
4\u3001\u9009\u62e9\u6676\u632f\u6e90<\/p>\n
\u5916\u90e8\u9ad8\u901f\u6676\u632f\u6e90(HSE)：Crystal\/Ceramic Resonator<\/p>\n
<\/p>\n<\/p>\n
5\u3001USB\u5de5\u4f5c\u6a21\u5f0f<\/p>\n
USB_OTG_FS：\u9009\u62e9 Device_Only;\u00a0 \u8bbe\u5907\u6a21\u5f0f(\u4ece\u673a\u6a21\u5f0f);\u00a0 \u00a0\u5176\u5b83\u53c2\u6570，\u9ed8\u8ba4\u3002<\/p>\n
\u6709\u4e9b\u82af\u7247\u578b\u53f7，\u5982F103\u7cfb\u5217，CubeMX\u4e0a\u7684\u663e\u793a\u662f：USB_FS，\u914d\u7f6e\u6b65\u9aa4\u662f\u4e00\u6837\u7684\u3002<\/p>\n
<\/p>\n<\/p>\n
6\u3001\u4e2d\u95f4\u4ef6\u7ec4\u4ef6<\/p>\n
USB_DEVICE：\u9009\u62e9 CDC (VPC)；\u00a0 \u5176\u5b83\u53c2\u6570，\u9ed8\u8ba4;<\/p>\n
<\/p>\n<\/p>\n
6\u3001\u914d\u7f6e\u7cfb\u7edf\u65f6\u949f<\/p>\n
\u2460\u00a0\u5f53\u542f\u7528USB\u529f\u80fd\u540e，\u8fdb\u5165\u65f6\u949f\u914d\u7f6e\u9875\u9762\u65f6，\u5f39\u7a97：\u00a0\u662f\u5426\u81ea\u52a8\u914d\u7f6e\u7cfb\u7edf\u65f6\u949f?\u00a0 \u9009\u62e9：No \u3002<\/p>\n
<\/p>\n<\/p>\n
\u2461\u00a0\u5148\u786e\u8ba4\u677f\u4e0a\u7684\u6676\u632f\u503c<\/p>\n
\n- \u914d\u7f6e\u65f6\u949f\u524d，\u5f88\u91cd\u8981\u7684\u4e00\u4e2a\u4e8b：\u5148\u6838\u5bf9\u5f00\u53d1\u677f\u4e0a\u7684\u6676\u632f\u9891\u7387（\u5728\u6676\u632f\u4e0a\u7684\u6570\u5b57）！<\/li>\n
- \u6676\u632f\u9891\u7387\u914d\u7f6e\u9519\u8bef\u65f6，\u7f16\u8bd1\u4e0d\u4f1a\u62a5\u9519，\u4f46\u7cfb\u7edf\u53ef\u80fd\u4e0d\u8fd0\u884c\u3001\u901a\u4fe1\u9519\u4e71\u7b49，\u540e\u671f\u6392\u67e5\u5f88\u8d39\u65f6\u95f4！<\/li>\n
- \u76ee\u524dSTM32\u7684\u677f\u5b50，\u5e38\u7528\u7684\u5916\u90e8\u9ad8\u901f\u6676\u632f\u6709\u4e09\u79cd：8M\u300112M\u300125M\u3002<\/li>\n<\/ul>\n
<\/p>\n<\/p>\n
\u2462\u00a0STM32F103 \u65f6\u949f\u914d\u7f6e：<\/p>\n
\n\u6676\u632f\u503c\u8f93\u5165\u5206\u9891\u8f93\u51fa\u500d\u9891USB\u5206\u9891APB1\u5206\u9891APB2\u5206\u9891\u7cfb\u7edf\u00a0\u65f6\u949f<\/tr>\n \n\n8<\/td>\n 1<\/td>\n 9<\/td>\n 1.5<\/td>\n 2<\/td>\n 1<\/td>\n 72MHz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/p>\n<\/p>\n
\u2463\u00a0STM32F4xx \u65f6\u949f\u914d\u7f6e：<\/p>\n
\u6ce8\u610f：F4\u7cfb\u5217，\u5404\u677f\u5546\u7565\u6709\u4e0d\u540c，\u5927\u90e8\u5206\u662f25M,\u00a0\u5c11\u90e8\u5206\u662f8M，\u4f7f\u7528\u6548\u679c\u4e00\u6837\u3002<\/p>\n
\n\u6676\u632f\u503c\u8f93\u5165\u5206\u9891\u8f93\u51fa\u500d\u9891\u8f93\u51fa\u5206\u9891USB\u5206\u9891APB1\u5206\u9891APB2\u5206\u9891\u7cfb\u7edf\u65f6\u949f<\/tr>\n \n\n25<\/td>\n 25<\/td>\n 336<\/td>\n 2<\/td>\n 7<\/td>\n 4<\/td>\n 2<\/td>\n 168MHz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/p>\n<\/p>\n
7\u3001\u5de5\u7a0b\u914d\u7f6e<\/p>\n
<\/p>\n
\n- \u5de5\u7a0b\u540d\u79f0\u3001\u8def\u5f84，\u8fd9\u4e24\u9879，\u5fc5\u987b\u82f1\u6587\u3002\u5426\u5219，\u751f\u6210\u7684\u5de5\u7a0b\u5c06\u4f1a\u7f3a\u5c11\u542f\u52a8\u6587\u4ef6<\/li>\n
- \u5f00\u53d1\u5de5\u5177：MDK-ARM,\u00a0 \u5373\u751f\u6210Keil\u5de5\u7a0b\u00a0<\/li>\n
- \u5806\u5927\u5c0f，\u5efa\u8bae：0x400<\/li>\n
- \u6808\u5927\u5c0f，\u5efa\u8bae：0x1000<\/li>\n<\/ul>\n<\/p>\n
8\u3001\u6587\u4ef6\u548c\u4ee3\u7801\u7684\u914d\u7f6e<\/p>\n
<\/p>\n<\/p>\n
9\u3001\u751f\u6210<\/p>\n
<\/p>\n<\/p>\n
\u7a0d\u7b49\u00a0\u7247\u523b：<\/p>\n
<\/p>\n<\/p>\n
\u751f\u6210\u7684\u5de5\u7a0b\u6587\u4ef6\u5939：<\/p>\n
<\/p>\n
Keil\u5de5\u7a0b\u7684\u5165\u53e3\u6587\u4ef6：<\/p>\n
<\/p>\n<\/p>\n
\n<\/h2>\n<\/h2>\n\u4e09\u3001Keil \u5de5\u7a0b\u914d\u7f6e<\/span><\/h2>\n<\/p>\n\u6309\u4e0a\u8ff0，\u53cc\u51fb\u6253\u5f00Keil\u5de5\u7a0b\u3002<\/p>\n
1\u3001\u65b0\u5efa\u7684\u5de5\u7a0b，\u9700\u8981\u8bbe\u7f6e\u4e00\u6b21\u4eff\u771f\u5668\u53c2\u6570 \u3002（\u70b9\u51fb OK \u4fdd\u5b58，\u5426\u5219\u65e0\u6548）\u3002<\/p>\n
<\/p>\n<\/p>\n
2\u3001\u914d\u7f6e\u5e38\u7528\u7684\u8c03\u8bd5\u9009\u9879<\/p>\n
\u4e0b\u9762\u8fd9\u4e24\u9879\u662f\u975e\u5fc5\u8981\u7684，\u5efa\u8bae\u6253\u52fe\u4f7f\u7528；\u7f16\u8bd1\u540e\u751f\u6548; \u6253\u52fe\u4f1a\u4ee4\u7f16\u8bd1\u901f\u5ea6\u53d8\u6162；<\/p>\n
<\/p>\n
\n- Debug Infomation: \u751f\u6210\u8c03\u8bd5\u4fe1\u606f\u3002debug\u6a21\u5f0f\u4e2d\u65e0\u6cd5\u8bbe\u7f6e\u65ad\u70b9，\u5c31\u662f\u8fd9\u4e2a\u9009\u9879\u6ca1\u6253\u52fe\u3002<\/li>\n
- Bowse Infomation: \u751f\u6210\u8ffd\u8e2a\u4fe1\u606f\u3002\u5982，\u53f3\u51fb\u51fd\u6570\u3001\u53d8\u91cf，\u70b9\u51fb\u5f39\u51fa\u83dc\u5355：Go To Definition…<\/li>\n<\/ul>\n
\u00a03\u3001\u7f16\u8bd1 \u9a8c\u8bc1<\/p>\n
\n- 0\u00a0Error，\u6b63\u7a0b\u6b63\u5e38\u3002<\/li>\n
- \u6709 Error，\u5931\u8d25；\u5e94\u8be5\u662f (2-7) \u90a3\u4e00\u6b65\u5de5\u7a0b\u540d\u79f0\u3001\u8def\u5f84\u6709\u4e2d\u6587\u3002\u4fee\u6539\u540e\u91cd\u65b0\u751f\u6210\u5373\u53ef\u3002<\/li>\n
- \u5148\u522b\u70e7\u5f55，\u522b\u70e7\u5f55，\u522b\u70e7\u5f55\u3002<\/li>\n<\/ul>\n
<\/p>\n<\/p>\n
\n\u56db\u3001\u5b9e\u73b0USB\u6a21\u62df\u63d2\u62d4<\/span><\/h2>\n<\/p>\n\u901a\u8fc7 CubeMX\u00a0\u914d\u7f6e\u540e\u751f\u6210\u7684\u5de5\u7a0b，\u5b83\u5df2\u5e26\u9700\u8981\u7684\u521d\u59cb\u5316\u4ee3\u7801\u3001\u914d\u7f6e\u4ee3\u7801\u3001\u57fa\u7840\u51fd\u6570\u7b49\u3002<\/p>\n
\u6211\u4eec\u53ea\u9700\u5728\u5de5\u7a0b\u91cc，\u6309\u9700\u8fdb\u884c\u7b80\u5355\u7684\u914d\u7f6e\u3001\u4fee\u6539\u4ee3\u7801，\u5373\u53ef\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\u00a01\u3001\u5305\u542b USB\u63a5\u53e3\u00a0\u7684\u5934\u6587\u4ef6<\/p>\n
\n- \u6253\u5f00 main.c\u6587\u4ef6，\u5927\u7ea6\u7b2c26\u884c，\u914d\u5bf9\u7684\u00a0\/*\u00a0USER CODE ……\u00a0Includes *\/\u00a0<\/span>\u6ce8\u91ca\u4e4b\u95f4,<\/li>\n
- \u6dfb\u52a0：#include\u00a0 "usbd_cdc_if.h"<\/li>\n<\/ul>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n<\/p>\n
2\u3001\u589e\u52a0 USB\u6a21\u62df\u63d2\u62d4 <\/p>\n
\u6211\u4eec\u5728\u8c03\u8bd5STM32\u7a0b\u5e8f\u671f\u95f4，\u9700\u8981\u53cd\u590d\u5730\u00a0\u4fee\u6539\u7a0b\u5e8f\u3001\u7f16\u8bd1\u3001\u70e7\u5f55;\u00a0 \u8fd9\u662f\u5e38\u89c4\u64cd\u4f5c，\u7528\u4e8e\u8c03\u8bd5\u5176\u5b83\u901a\u4fe1\u6a21\u5757，\u5982DHT11\u3001ESP8266\u7b49，\u662f\u6ca1\u6709\u95ee\u9898\u7684，\u4f46\u7528\u4e8e\u8c03\u8bd5USB\u7684\u901a\u4fe1，\u5c31\u4f1a\u7ffb\u8f66\u3002<\/p>\n
\u5f53\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf\u4e00\u76f4\u63d2\u5728USB\u53e3\u4e0a，\u7a0b\u5e8f\u91cd\u65b0\u70e7\u5f55\u540e，\u7a0b\u5e8f\u7684\u91cd\u65b0\u8fd0\u884c，\u5c06\u5bfc\u81f4\u901a\u4fe1\u9519\u8bef\u3001USB\u7aef\u53e3"\u5047\u6b7b"\u7b49\u73b0\u8c61;\u00a0<\/p>\n
\u4e0a\u6587\u4e2d\u5df2\u4ecb\u7ecd，\u7535\u8111\u7aefUSB\u53e3\u6ca1\u6709\u63d2\u5165\u8bbe\u5907\u65f6，DP\u548cDM\u7ebf，\u662f\u4f4e\u7535\u5e73\u72b6\u6001，\u800c\u8bbe\u5907\u7aef\u7684DP\u7ebf，\u67091.5K\u7535\u963b\u4e0a\u62c9\u52303.3V，\u5f53\u8bbe\u5907\u63d2\u5165\u5230\u7535\u8111USB\u53e3，USB\u53e3\u7684DP\u7ebf\u5c31\u4f1a\u88ab\u7f6e\u9ad8\u7535\u5e73，\u4e3b\u673a\u662f\u4f9d\u9760\u8fd9\u4e2a\u673a\u5236\u5224\u65ad\u8bbe\u5907\u662f\u5426\u63d2\u5165\u3001\u62d4\u51fa，\u7ee7\u800c\u89e6\u53d1\u4e0d\u540c\u7684\u52a8\u4f5c，\u5982\u679a\u4e3e\u3001\u91ca\u653e\u7aef\u53e3\u7b49\u3002<\/p>\n
\u5f53\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf\u4e00\u76f4\u63d2\u5728USB\u53e3\u4e0a，\u5728STM32\u70e7\u5f55\u7a0b\u5e8f\u91cd\u65b0\u8fd0\u884c\u540e，\u7a0b\u5e8f\u91cc\u7684USB\u4ee3\u7801\u7b49\u5f85\u7740\u4e3b\u673a\u65b9\u53d1\u8d77\u679a\u4e3e\u8fc7\u7a0b；\u800c\u8fd9\u4e2a\u671f\u95f4\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf\u6ca1\u6709\u65ad\u5f00，\u4e3b\u673a\u65b9\u8ba4\u4e3a\u8bbe\u5907\u65b9\u4e00\u76f4\u5728\u7ebf，\u65e9\u5df2\u679a\u4e3e\u6210\u529f，\u4e00\u76f4\u5bf9\u5176\u8f6e\u8be2\u6570\u636e\u6536\u53d1\u3002\u53cc\u65b9\u201c\u5357\u8f95\u5317\u8f99，\u80e1\u8a00\u4e71\u8bed\u201d，\u6ce8\u5b9a\u7ffb\u8f66\u3002<\/p>\n
\u6b63\u5e38\u64cd\u4f5c\u662f：\u6bcf\u6b21\u70e7\u5f55\u524d，\u5148\u628a\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf\u62d4\u4e0b\u6765，\u70e7\u5f55\u597d\u4e86，\u518d\u63d2\u4e0a，……\u3002<\/p>\n
\u4e3a\u4e86\u907f\u514d\u8c03\u8bd5\u671f\u95f4\u9891\u7e41\u5730\u624b\u52a8\u64cd\u4f5c，\u6211\u4eec\u53ef\u4ee5\u5728\u7a0b\u5e8f\u5f00\u8dd1\u540e\u3001USB\u521d\u59cb\u5316\u524d，\u7528\u4ee3\u7801\u628aPA12\u7f6e\u4f4e，\u4f7fD+\u7ebf\u4e3a\u4f4e\u7535\u5e73，\u6301\u7eed\u4e00\u6bb5\u65f6\u95f4，\u6a21\u62dfUSB\u62d4\u51fa\u52a8\u4f5c，\u4ee4\u4e3b\u673a\u8ba4\u4e3a\u8bbe\u5907\u5df2\u65ad\u5f00\u8fde\u63a5，\u91ca\u653e\u7aef\u53e3; \u7136\u540e，\u5f53\u7a0b\u5e8f\u8fd0\u884c\u5230\u540e\u9762\u7684USB\u521d\u59cb\u5316\u51fd\u6570\u65f6，PA12\u4f1a\u88ab\u6b63\u5e38\u914d\u7f6e（DP\u7ebf\u7535\u5e73\u88ab\u7f6e\u9ad8)，USB\u4e3b\u673a\u5c31\u4f1a"\u53d1\u73b0"\u6709\u8bbe\u5907\u63d2\u5165，\u5f00\u59cb\u5c1d\u8bd5\u679a\u4e3e\u3001\u914d\u7f6e;<\/p>\n
\u5177\u4f53\u64cd\u4f5c：<\/p>\n
\n- \u6253\u5f00\u00a0usbd_conf.c\u00a0\u6587\u4ef6，\u5927\u7ea6\u7b2c70\u884c\u9644\u8fd1，\u627e\u5230HAL_PCD_MspInit ( )\u51fd\u6570;<\/li>\n
- \u5728\u4e24\u5bf9 \/* USER … 0 *\/\u00a0\u6ce8\u91ca\u4e4b\u95f4，\u7ea675\u884c，\u6dfb\u52a0PA12\u5f15\u811a\u7f6e\u4f4e\u7535\u5e73\u64cd\u4f5c,\u00a0 \u5982\u4e0b（\u53ef\u590d\u5236）:<\/li>\n<\/ul>\n
__HAL_RCC_GPIOA_CLK_ENABLE(); \/\/ \u4f7f\u80fdGPIOA\u7aef\u53e3
\n GPIO_InitTypeDef GPIO_InitStruct = {0}; \/\/ \u58f0\u660e\u7ed3\u6784\u4f53; \u5982\u679c\u4e0e\u6587\u4e2d\u4f4d\u7f6e\u76f8\u540c，\u8fd9\u884c\u53ef\u4e0d\u5199
\n GPIO_InitStruct.Pin = GPIO_PIN_12; \/\/ \u5f15\u811aPA12, \u5373D+
\n GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; \/\/ \u5f15\u811a\u5de5\u4f5c\u6a21\u5f0f
\n GPIO_InitStruct.Pull = GPIO_PULLDOWN; \/\/ \u4e0b\u62c9
\n GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; \/\/ \u5f15\u811a\u53cd\u8f6c\u901f\u5ea6
\n HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); \/\/ \u521d\u59cb\u5316
\n HAL_Delay(5); \/\/ \u6301\u7eed\u7247\u523b <\/p>\n
\u6ce8\u610f，\u6700\u540e\u4e00\u884c\u7684\u5ef6\u65f6，\u662f\u5fc5\u987b\u7684，\u5efa\u8bae\u57285ms\u5de6\u53f3;<\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n
\u589e\u52a0\u8fd9\u6bb5\u4ee3\u7801\u540e，\u518d\u65e0\u9700\u624b\u52a8\u63d2\u62d4\u00a0\u865a\u62df\u4e32\u53e3\u7684USB\u00a0\u7ebf\u4e86，\u7a0b\u5e8f\u5c06\u6a21\u62df \u201c\u00a0\u65ad\u5f00\u3001\u63d2\u5165\u201d;<\/p>\n
\u518d\u6b21\u7f16\u8bd1，\u786e\u4fdd\u4e0a\u8ff0\u64cd\u4f5c\u6b63\u5e38 （\u5148\u522b\u70e7\u5f55）\u3002<\/p>\n<\/p>\n
\n<\/h2>\n<\/h2>\n\u4e94\u3001\u53d1\u9001<\/span><\/h2>\n<\/p>\n\u53d1\u9001\u6570\u636e\u7684\u51fd\u6570<\/p>\n
uint8_t CDC_Transmit_FS ( uint8_t* Buf, uint16_t Len ); <\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u51fd\u6570\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570：\u6570\u636e\u7f13\u51b2\u533a\u7684\u5730\u5740\u3001\u5b57\u8282\u6570\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u679cUSB\u8bbe\u5907\u6b63\u5fd9，\u5b83\u4f1a\u8fd4\u56deUSBD_BUSY\u72b6\u6001\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u4e2a\u51fd\u6570\u7684\u4f5c\u7528\u662f\u8bbe\u7f6e\u4f20\u8f93\u6570\u636e\u7684\u7f13\u51b2\u533a，\u5e76\u6807\u8bb0\u6570\u636e\u5305\u4e3a\u5f85\u53d1\u9001\u3002\u6570\u636e\u5e76\u975e\u7acb\u523b\u53d1\u51fa，\u800c\u662f\u88ab\u5b58\u50a8\u5728USB\u5916\u8bbe\u7684\u7f13\u51b2\u533a\u4e2d，\u7b49\u5f85\u4e3b\u673a\u8f6e\u8be2\u8bf7\u6c42\u4f20\u8f93\u3002<\/p>\n<\/p>\n
\u53d1\u9001\u793a\u8303\u64cd\u4f5c<\/p>\n
\n- \u5728main.c\u00a0\u7684 while\u00a0\u5faa\u73af\u4e2d，\u6dfb\u52a0\u4e09\u884c\u6d4b\u8bd5\u4ee3\u7801：1\u884c\u5ef6\u65f6\u3001\u4e24\u884c\u53d1\u9001\u6570\u636e;<\/li>\n<\/ul>\n
\u6ce8\u610f：\u662f\u5171\u4e09\u884c，1\u884c\u5ef6\u65f6，2\u884c\u53d1\u9001\u3002<\/p>\n
\u8bf7\u4e25\u683c\u6309\u7167\u8fd9\u4e09\u884c\u6765\u5199，\u56e0\u4e3a\u6211\u4eec\u8981\u987a\u5e26\u5b9e\u73b0\u4e00\u4e2abug,\u00a0 \u7136\u540e\u4e0b\u9762\u65b9\u4fbf\u89e3\u91ca\u5177\u4f53\u539f\u56e0！<\/p>\n
<\/p>\n
\u65b0\u624b，\u60f3\u7701\u65f6\u95f4，\u5c31\u8bf7\u6309\u6b65\u9aa4\u64cd\u4f5c\u00a0：<\/p>\n
\n- \u5148\u522b\u63d2\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf<\/li>\n
- \u7f16\u8bd1\u3001\u70e7\u5f55\u4ee3\u7801<\/li>\n
- \u6253\u5f00\u4e32\u53e3\u52a9\u624b, （\u8fd9\u65f6\u662f\u6ca1\u6709\u63d2\u865a\u62df\u4e32\u53e3USB\u7ebf\u7684），\u67e5\u770b\u76ee\u524d\u6709\u54ea\u4e9b\u7aef\u53e3\u53f7<\/li>\n
- \u63d2\u5165\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf，\u5230\u5f00\u53d1\u677f\u7684 USB-Slave\u63a5\u53e3\u00a0<\/li>\n
- ( \u524d\u63d0：win10\u300111\u7cfb\u7edf\u5df2\u5e26\u865a\u62df\u4e32\u53e3\u9a71\u52a8; win7\u8981\u624b\u52a8\u5b89\u88c5\u9a71\u52a8：\u865a\u62df\u4e32\u53e3\u4e0b\u8f7d)<\/li>\n
- ( \u7535\u8111\u4f1a\u81ea\u52a8\u8bc6\u522b\u5230\u8bbe\u5907；\u5982\u679c\u662f\u7b2c\u4e00\u6b21\u4f7f\u7528\u865a\u62df\u4e32\u53e3，\u7535\u8111\u5c06\u81ea\u52a8\u5b89\u88c5\u9a71\u52a8\u7a0b\u5e8f)<\/li>\n
- \u68c0\u67e5\u4e32\u53e3\u52a9\u624b，\u53d1\u73b0\u591a\u4e86\u4e00\u4e2a\u7aef\u53e3\u53f7， \u9009\u62e9\u5b83，\u6ce2\u7279\u7387\u7b49\u53c2\u6570\u4e0d\u7528\u4fee\u6539，\u6253\u5f00\u7aef\u53e3;<\/li>\n<\/ul>\n
\u63a5\u7ebf，\u5982\u4e0b\u56fe（\u793a\u4f8b\u6240\u7528\u7684\u5f00\u53d1\u677f）：<\/p>\n
\n- \u5de6\u4fa7\u4e3a\u7528\u6237USB\u63a5\u53e3，\u5df2\u8fde\u63a5PA11\u3001PA12，\u6211\u4eec\u5c31\u662f\u7528\u8fd9\u4e2aU\u53e3\u5b9e\u73b0\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u3002<\/li>\n
- \u53f3\u4fa7\u662f\u677f\u8f7d\u4eff\u771f\u5668CMSIS DAP\u7684\u63a5\u53e3，\u5b83\u81ea\u5e26\u4e86USB\u8f6cTTL\u529f\u80fd\u3002<\/li>\n<\/ul>\n
<\/p>\n
\u6ce8\u610f\u7aef\u53e3\u7684\u9009\u62e9：<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u5f53\u4f7f\u7528\u7684\u5f00\u53d1\u677f，\u5df2\u5e26USB\u8f6cTTL\u529f\u80fd，\u5982\u4e0a\u9762\u8fd9\u4e2a\u3002\u5728\u70e7\u5f55\u865a\u62df\u4e32\u53e3\u7684\u7a0b\u5e8f\u540e，\u4e32\u53e3\u52a9\u624b\u4f1a\u6709\u81f3\u5c11\u4e24\u4e2a\u7aef\u53e3\u53f7：\u677f\u5b50\u81ea\u5e26\u7684USB\u8f6cTTL（\u53f3\u4fa7）\u3001\u7a0b\u5e8f\u5b9e\u73b0\u7684\u865a\u62df\u4e32\u53e3（\u5de6\u4fa7），\u6ce8\u610f\u4e0d\u8981\u9009\u62e9\u9519\u4e86\u3002<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u5982\u679c\u4e0d\u77e5\u9053\u54ea\u6839\u7ebf\u5bf9\u5e94\u54ea\u4e2a\u7aef\u53e3：\u5728\u70e7\u5f55\u540e，\u62d4\u4e00\u4e0bUSB\u7ebf，\u770b\u770b\u54ea\u4e2a\u7aef\u53e3\u6d88\u5931\u4e86\u3002<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u53e6\u4e00\u65b9\u6cd5，\u6709\u4e9b\u4e32\u53e3\u52a9\u624b\u7684\u7aef\u53e3\u5217\u8868，\u80fd\u663e\u793a\u8bbe\u5907\u4fe1\u606f，\u627e\u5230\u5e26\u201cSTM…\u201d\u63cf\u8ff0\u7684\u90a3\u4e2a\u3002<\/p>\n<\/p>\n
\u73b0\u5728\u80fd\u770b\u5230，\u4e32\u53e3\u52a9\u624b\u80fd\u63a5\u6536\u5230\u7a0b\u5e8f\u6301\u7eed\u53d1\u51fa\u7684\u6570\u636e\u4e86！<\/p>\n
\u6548\u679c\u5982\u4e0b\u56fe：<\/p>\n
<\/p>\n
\n<\/p>\n\u516d\u3001\u53d1\u9001\u4f18\u5316（\u8fde\u7eed\u53d1\u9001）<\/span><\/h2>\n<\/p>\n\u4e0a\u8282\u7684\u53d1\u9001，\u5b9e\u73b0\u65f6，\u53ea\u80fd\u6536\u5230\u7b2c\u4e00\u884c"Hello"，\u800c\u7b2c\u4e8c\u884c\u53d1\u51fa\u7684\u6570\u636e:"\u501f\u70b9\u94b1 "\u5374\u6ca1\u6536\u5230！！<\/p>\n
\u4e0d\u662f\u6ca1\u6536\u5230\u3002\u5176\u5b9e，\u4eceSTM32\u7a0b\u5e8f\u7684\u89d2\u5ea6，\u662f\u6ca1\u6709\u53d1\u51fa\u6570\u636e！<\/p>\n
\u5148\u8bf4\u8bf4，USB\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u7684\u51e0\u4e2a\u91cd\u70b9 (\u7279\u6307：USB2.0\u3001\u5168\u901f\u6a21\u5f0f\u3001\u4e2d\u65ad\u4f20\u8f93）：<\/p>\n
\n- USB\u662f\u8f6e\u8be2\u673a\u5236，\u4e3b\u673a\u5bf9\u8bbe\u5907\u4e0d\u65ad\u8f6e\u8be2，\u95f4\u9694\u6700\u5c0f1ms；\u4e0d\u662f\u56fa\u5b9a\u76841ms,\u00a0 \u662f\u6700\u5c0f\u95f4\u9694\u65f6\u95f4;<\/li>\n
- USB\u7684\u6570\u636e，\u662f\u6309\u5305\u4f20\u8f93\u7684;\u00a0<\/li>\n
- \u6bcf\u4e2a\u8bbe\u5907，\u6bcf1ms，\u6700\u591a\u4f20\u8f931\u5305\u6570\u636e;<\/li>\n
- \u6bcf\u5305\u6700\u591a64\u5b57\u8282（\u6709\u6548\u8d1f\u8f7d）;<\/li>\n<\/ul>\n
\u518d\u8bf4\u8bf4，CDC_Transmit_FS ( )\u00a0\u51fd\u6570：<\/p>\n
\n- \u5b83\u7684\u7b2c2\u4e2a\u53c2\u6570，"\u5b57\u8282\u6570"，\u8303\u56f4：0~2048;\u00a0\u8fd9\u4e2a2048\u53ef\u4ee5\u5728CubeMX\u91cc\u8fdb\u884c\u8bbe\u7f6e\u5927\u5c0f;\u00a0<\/li>\n
- \u5b57\u8282\u6570 <= 64，\u7b971\u5305\u3002\u5982：\u53d13\u4e2a\u5b57\u8282，\u4e5f\u7b971\u5305\u3002<\/li>\n
- \u5b57\u8282\u6570 == 0，\u4e5f\u7b971\u5305\u3002\u4fd7\u79f0：\u7a7a\u5305; \u5982\u679c\u4e0a\u4e00\u5e27\u521a\u597d\u53d1\u900164\u5b57\u8282，\u518d\u53d1\u4e00\u4e2a\u7a7a\u5305\u4f5c\u4e3a\u7ed3\u675f\u5305;<\/li>\n
- \u5b57\u8282\u6570 >\u00a064，\u00a0CDC_Transmit_FS ( )\u00a0\u80cc\u540e\u6709\u7f13\u5b58，\u5b83\u81ea\u52a8\u5206\u5305，1ms\u5de6\u53f3\u53d11\u5305，\u76f4\u81f3\u53d1\u5b8c;<\/li>\n
- \u5982\u679c\u4e0a\u4e00\u5305\u8fd8\u6ca1\u53d1\u5b8c，\u518d\u6b21\u8c03\u7528CDC_Transmit_FS ( ) ，\u5c06\u653e\u5f03\u672c\u6b21\u8c03\u7528\u3002<\/li>\n<\/ul>\n
\u4e0a\u9762while\u5faa\u73af\u4e2d，\u8fde\u7eed\u3001\u4e24\u6b21\u8c03\u7528CDC_Transmit_FS ( ) .<\/p>\n
\n- \u7b2c1\u6b21\u8c03\u7528，\u5c06\u6b63\u5e38\u53d1\u51fa\u4e00\u5305\u6570\u636e;<\/li>\n
- \u7b2c2\u6b21\u8c03\u7528，\u518d\u53d1\u9001\u4e00\u5305\u3002\u4f46\u662f，\u4e24\u5305\u6ca1\u6709\u95f4\u96941ms\u4ee5\u4e0a，\u5bfc\u81f4\u4e86\u7b2c2\u6b21\u7684\u53d1\u9001，\u88ab\u820d\u5f03\u4e86\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u5148\u6253\u5f00\u00a0CDC_Transmit_FS ( )\u00a0\u51fd\u6570，\u770b\u770b\u51fd\u6570\u539f\u578b\u3002<\/p>\n
\u5728\u4ee3\u7801\u4e2d，\u53f3\u51fbCDC_Transmit_FS ( ) ，\u5f39\u51fa\u83dc\u5355，\u9009\u62e9Go To Definition…，\u5c06\u8df3\u8f6c\u5230\u51fd\u6570\u4f4d\u7f6e;<\/p>\n
\u6216\u8005，\u5728\u5de6\u4fa7\u6587\u4ef6\u6811\u4e2d，\u53cc\u51fb\u6253\u5f00usbd_cdc_if.c\u00a0\u6587\u4ef6 ，CDC_Transmit_FS ( ) \u4f4d\u4e8e\u5927\u7ea6280\u884c\u00a0;<\/p>\n
\u7279\u522b\u6ce8\u610f：<\/span><\/p>\nusbd_cdc_if.c\u00a0\u662f\u5e94\u7528\u5c42\u6587\u4ef6，\u6211\u4eec\u5bf9\u6536\u3001\u53d1\u6709\u5565\u7279\u6b8a\u9700\u6c42，\u901a\u8fc7\u4fee\u6539\u6587\u4ef6\u91cc\u7684\u53d1\u9001\u51fd\u6570\u3001\u63a5\u6536\u56de\u8c03\u51fd\u6570\u3001\u7c7b\u8bf7\u6c42\u51fd\u6570，\u57fa\u672c\u90fd\u80fd\u5b9e\u73b0\u3002<\/p>\n
\u4e0b\u56fe，\u662f\u00a0CDC_Transmit_FS ( )\u00a0\u51fd\u6570\u622a\u56fe\u3002<\/p>\n
\u7ea2\u6846\u7684\u4ee3\u7801\u4f5c\u7528\u662f：\u5f53\u8bbe\u5907\u5fd9\u65f6，\u76f4\u63a5\u653e\u5f03\u53d1\u9001,：<\/p>\n
<\/p>\n<\/p>\n
\u4fee\u6539：<\/p>\n
\n- \u6ce8\u91ca\u6389\u521a\u624d if\u00a0\u4f53\u76843\u884c\u4ee3\u7801;<\/li>\n
- \u589e\u52a0\u7b49\u5f85\u53d1\u9001\u7a7a\u95f2\u3001\u5224\u65ad\u8d85\u65f6，\u5982\u4e0b6\u884c;<\/li>\n
- \u6574\u4e2aCDC_Transmit_FS ( ) \u51fd\u6570，\u5982\u4e0b:（\u53ef\u590d\u5236）<\/li>\n<\/ul>\n
uint8_t CDC_Transmit_FS(uint8_t *Buf, uint16_t Len)
\n{
\n uint8_t result = USBD_OK;
\n \/* USER CODE BEGIN 7 *\/<\/p>\n
USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)hUsbDeviceFS.pClassData; \/\/ \u83b7\u5f97\u8bbe\u5907\u7684\u72b6\u6001\u4fe1\u606f\u7ed3\u6784\u4f53
\n \/\/ if (hcdc->TxState != 0){
\n \/\/ return USBD_BUSY;
\n \/\/ }
\n uint32_t timeStart = HAL_GetTick();
\n while (hcdc->TxState)
\n {
\n if (HAL_GetTick() – timeStart > 20)
\n return USBD_BUSY;
\n }<\/p>\n
USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
\n result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);<\/p>\n
\/* USER CODE END 7 *\/
\n return result;
\n} <\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50：<\/p>\n<\/p>\n
\u518d\u6b21\u7f16\u8bd1\u3001\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u4e32\u53e3\u52a9\u624b，\u73b0\u5728\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n
\u8fde\u7eed\u53d1\u9001\u5df2\u5b9e\u73b0\u4e86\u3002<\/p>\n
\u4e0a\u8ff0\u65b9\u6cd5\u80fd\u591f\u89e3\u51b3\u8fde\u7eed\u53d1\u9001\u5931\u8d25\u7684\u95ee\u9898\u3002<\/p>\n
\u4f46\u5b83\u5b58\u5728\u4e00\u4e2a\u663e\u8457\u7f3a\u70b9：\u7531\u4e8e\u5176\u963b\u585e\u6027\u8d28，\u9891\u5bc6\u8fde\u7eed\u53d1\u9001\u65f6，\u5c06\u5bfc\u81f4\u8fd0\u884c\u201c\u6b7b\u7b49\u201d，\u5f71\u54cd\u7a0b\u5e8f\u6548\u7387\u3002<\/p>\n
（\u5bf9\u4e8e\u5927\u90e8\u5206\u573a\u666f，\u4e0a\u8ff0\u65b9\u6cd5\u5df2\u8db3\u591f\u3002\u672c\u8282\u5185\u5bb9，\u53ea\u662f\u4e3a\u4f60\u9884\u57cb\u4e00\u79cd\u5907\u7528\u601d\u8def，\u65e0\u9700\u6b7b\u78d5\u3002）<\/p>\n
\u5982\u679c\u9879\u76ee\u5bf9\u5b9e\u65f6\u6027\u6709\u8f83\u9ad8\u7684\u8981\u6c42，\u53ef\u4ee5\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528\u53d1\u9001\u6570\u636e\u51fd\u6570 CDC_Transmit_FS() \u548c\u53d1\u9001\u5b8c\u6210\u56de\u8c03\u51fd\u6570 CDC_TransmitCplt_FS() \u6765\u63d0\u9ad8\u4f20\u8f93\u6548\u7387\u3002CDC_TransmitCplt_FS() \u4f1a\u5728 CDC_Transmit_FS() \u51fd\u6570\u53d1\u9001\u6570\u636e\u5b8c\u6bd5\u540e\u81ea\u52a8\u88ab\u8c03\u7528\u3002<\/p>\n
\u6839\u636e\u8fd9\u4e24\u4e2a\u51fd\u6570\u7684\u7279\u70b9，\u53ef\u4ee5\u8bbe\u8ba1\u4e00\u5957\u9ad8\u6548\u7684\u53d1\u9001\u7f13\u5b58\u673a\u5236\u3002\u4f8b\u5982，\u53ef\u4ee5\u7ef4\u62a4\u4e00\u4e2a\u53d1\u9001\u961f\u5217，\u5f53 CDC_Transmit_FS() \u5b8c\u6210\u53d1\u9001\u540e，CDC_TransmitCplt_FS() \u88ab\u8c03\u7528\u65f6，\u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u4e0b\u4e00\u4e2a\u6570\u636e\u9879\u8fdb\u884c\u53d1\u9001，\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u6570\u636e\u4f20\u8f93\u7684\u8fde\u7eed\u6027\u3002<\/p>\n
\u8fd9\u4e2a\u53d1\u9001\u5b8c\u6210\u56de\u8c03\u51fd\u6570 CDC_TransmitCplt_FS() ，\u4f4d\u4e8e\u53d1\u9001\u51fd\u6570 CDC_Transmit_FS() \u7684\u6b63\u4e0b\u65b9\u3002<\/p>\n
\u81f3\u4e8e\u5177\u4f53\u7684\u4ee3\u7801\u5b9e\u73b0，\u4e0d\u540c\u9879\u76ee\u9700\u6c42\u5404\u5f02，\u65e0\u6cd5\u63d0\u4f9b\u4e00\u4e2a\u901a\u7528\u7684\u89e3\u51b3\u65b9\u6848\u3002\u56e0\u6b64，\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u9879\u76ee\u9700\u6c42，\u8fdb\u884c\u9488\u5bf9\u6027\u7684\u8bbe\u8ba1\u548c\u4f18\u5316，\u4e0d\u80fd\u4e00\u836f\u6cbb\u767e\u75c5\u3002<\/p>\n
\n<\/h2>\n<\/h2>\n\u4e03\u3001\u63a5\u6536<\/span><\/h2>\n<\/p>\n1\u3001\u63a5\u6536\u65b9\u5f0f\u7684\u7b80\u8ff0<\/p>\n
\u5f53USB CDC\u63a5\u6536\u5230\u6765\u81eaUSB\u4e3b\u673a\u7684\u6570\u636e\u65f6，\u89e6\u53d1\u4e2d\u65ad\u8fdb\u5165\u4e2d\u65ad\u51fd\u6570，\u7ee7\u800c\u81ea\u52a8\u8c03\u7528\u63a5\u6536\u56de\u8c03\u51fd\u6570:<\/p>\n
int8_t\u00a0 CDC_Receive_FS\u00a0(uint8_t* Buf, uint32_t *Len);\u00a0\u00a0 <\/p>\n
\n- uint8_t* Buf:\u00a0 \u00a0\u6307\u5411\u63a5\u6536\u7f13\u51b2\u533a\u7684\u6307\u9488，\u5373\u6570\u636e\u7f13\u5b58\u7684\u5730\u5740\u3002<\/li>\n
- uint16_t* Len: \u5f53\u524d\u6570\u636e\u5305\u7684\u5b57\u8282\u6570\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u5c31\u5728\u8fd9\u4e2a\u56de\u8c03\u51fd\u6570\u91cc，\u5904\u7406\u63a5\u6536\u5230\u7684\u6570\u636e！<\/p>\n
\u5b83\u5728\u00a0usbd_cdc_if.c \u6587\u4ef6，\u4f4d\u4e8e\u53d1\u9001\u51fd\u6570\u7684\u6b63\u4e0a\u65b9；<\/p>\n
\u51fd\u6570\u5185\u90e8，\u751f\u6210\u7684\u4ee3\u7801\u91cc，\u53ea\u67092\u884c\u6267\u884c\u4ee3\u7801，\u6307\u5b9a\u4e0b\u6b21\u63a5\u6536\u7684\u5b58\u653e\u4f4d\u7f6e;\u00a0 \u5982\u4e0b\u56fe\u6240\u793a：<\/p>\n
\u800c\u672c\u6b21\u6240\u63a5\u6536\u5230\u7684\u6570\u636e，\u8be5\u5982\u4f55\u5904\u7406，\u9700\u8981\u6211\u4eec\u81ea\u884c\u6dfb\u52a0\u4ee3\u7801\u3002<\/p>\n
<\/p>\n<\/p>\n
\u63a5\u6536\u673a\u5236\u6ce8\u610f\u4e8b\u9879：<\/p>\n
\n- \u6bcf\u5f53\u63a5\u6536\u5230\u4e00\u5305\u6570\u636e，\u786c\u4ef6\u81ea\u52a8\u89e6\u53d1\u4e2d\u65ad\u51fd\u6570，\u00a0\u7ee7\u800c\u8c03\u7528\u6b64\u63a5\u6536\u56de\u8c03\u51fd\u6570，\u65e0\u9700\u4eba\u5de5\u8c03\u7528\u3002<\/li>\n
- \u4e0e\u53d1\u9001\u673a\u5236\u76f8\u4f3c，\u6bcf\u95f4\u96941ms，\u6700\u591a\u63a5\u65361\u5305\u6570\u636e，\u6bcf\u5305\u6700\u592764\u5b57\u8282\u3002\u3002<\/li>\n
- \u5982\u679c\u9700\u8981\u63a5\u6536\u8d85\u8fc764\u5b57\u8282\u7684\u6570\u636e\u5e27，\u6ce8\u610f，\u6307\u4e0a\u4f4d\u673a\u53d1\u9001\u76841\u4e2a\u5b8c\u6574\u6570\u636e\u5e27，\u800c\u975eUSB\u7684\u5355\u5305\u6570\u636e，\u5982，\u4e0a\u4f4d\u673a\u53d1\u6765\u4e00\u5f20\u56fe\u7247\u6570\u636e，8350\u4e2a\u5b57\u8282，\u5219\u9700\u8981\u5728\u6b64\u56de\u8c03\u51fd\u6570\u4e2d\u6dfb\u52a0\u989d\u5916\u7684\u4ee3\u7801\u6765\u5224\u65ad\u5e27\u6570\u636e\u4f20\u8f93\u5b8c\u6574\u7ed3\u675f \u3001\u624b\u52a8\u5c06\u591a\u4e2a\u6570\u636e\u5305\u62fc\u63a5\u6210\u5b8c\u6574\u7684\u6570\u636e\u5e27\u3002<\/li>\n
- \u63a5\u6536\u5230\u6570\u636e\u65f6，\u7f13\u5b58\u4e0d\u4f1a\u63d0\u524d\u81ea\u52a8\u6e05\u96f6，\u65b0\u6570\u636e\u4eceBuf\u7684\u8d77\u59cb\u4f4d\u7f6e\u5f00\u59cb，\u8986\u76d6\u5b58\u653e\u3002<\/li>\n
- \u7531\u4e8e\u8be5\u56de\u8c03\u51fd\u6570\u662f\u88ab\u4e2d\u65ad\u51fd\u6570\u8c03\u7528\u7684，\u56e0\u6b64\u5efa\u8bae\u51fd\u6570\u5185\u90e8\u7684\u5904\u7406\u5c3d\u53ef\u80fd\u5730\u7b80\u77ed，\u4ee5\u907f\u514d\u5f71\u54cd\u7cfb\u7edf\u7684\u5b9e\u65f6\u6027（\u4e2d\u65ad\u51fd\u6570\u8fd0\u884c\u671f\u95f4，\u4f1a\u4ee4\u7a0b\u5e8f\u6301\u7eed\u6302\u8d77）\u3002<\/li>\n<\/ul>\n
2\u3001\u63a5\u6536\u793a\u8303<\/p>\n
\u672c\u8282\u5c06\u793a\u8303：<\/p>\n
\n- \u901a\u8fc7\u4e32\u53e3\u52a9\u624b，\u53d1\u9001\u5b57\u7b26\u4e32\u00a0<\/li>\n
- STM32（\u8bbe\u5907\u7aef）\u6536\u5230\u6570\u636e\u540e，\u628a\u6536\u5230\u7684\u5b57\u8282\u6570\u3001\u5b57\u7b26\u4e32，\u53d1\u56de\u4e32\u53e3\u52a9\u624b\u663e\u793a（\u4e3b\u673a\u7aef）<\/li>\n<\/ul>\n
\u5728\u51fd\u6570\u5185\u7684\u6ce8\u91ca\u884c\u00a0 \/* USER CODE BEGIN *\/\u00a0 \u4e0b\u65b9，\u6dfb\u52a04\u884c\u81ea\u5b9a\u4e49\u4ee3\u7801（\u53ef\u590d\u5236）\u3002<\/p>\n
char myStr[64] = {0}; \/\/ \u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4，\u7528\u4e8e\u5b58\u653e\u8981\u8f93\u51fa\u7684\u5b57\u7b26\u4e32
\n sprintf(myStr, "\\\\r\\\\r\u6536\u5230 %d \u4e2a\u5b57\u8282；\\\\r\u5185\u5bb9\u662f：%s\\\\r\\\\r", *Len, (char *)Buf); \/\/ \u683c\u5f0f\u5316\u5b57\u7b26\u4e32
\n CDC_Transmit_FS((uint8_t *)myStr, strlen(myStr)); \/\/ \u53d1\u9001
\n memset(Buf, 0, 64); \/\/ \u5904\u7406\u5b8c\u6570\u636e，\u6e050\u63a5\u6536\u7f13\u5b58;<\/p>\n
\u6ce8\u610f：<\/p>\n
\n- \u7528char\u00a0\u58f0\u660emyStr[ ],\u00a0\u662f\u56e0\u4e3a\u6b64\u5904\u60f3\u628a\u5b83\u4f5c\u4e3a\u4e00\u6bb5\u5b57\u7b26\u4e32\u7a7a\u95f4;<\/li>\n
- sprintf\u662fC\u8bed\u8a00\u6807\u51c6\u8f93\u5165\u8f93\u51fa\u5e93\u7684\u51fd\u6570，\u5982\u679c\u62a5\u9519\u6ca1\u6709\u8fd9\u4e2a\u51fd\u6570，\u5c31：#include <stdio.h><\/li>\n
- \u83b7\u53d6\u5b57\u8282\u6570，\u662f*Len，\u800c\u4e0d\u662fLen;\u00a0 \u56e0\u4e3a\u5b83\u5728\u51fd\u6570\u53c2\u6570\u91cc\u7684\u58f0\u660e，\u662f\u4e00\u4e2a\u6307\u9488;<\/li>\n
- \u4e3a\u4e86\u683c\u5f0f\u5316\u6210\u5b57\u7b26\u4e32，Buf\u7528\u4e86(char*)\u8fdb\u884c\u5f3a\u5236\u8f6c\u6362\u6210\u5b57\u7b26\u7c7b\u578b;\u00a0<\/li>\n
- CDC_Transmit_FS( )\u91cc，\u7528\u4e86strlen\u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u5b57\u8282\u6570，\u5b83\u53ea\u5bf9\u5b57\u7b26\u4e32\u6709\u6548，\u5bf9\u5176\u5b83\u6570\u636e\u7c7b\u578b\u65e0\u6548;\u00a0 \u5982\u679c\u62a5\u9519\u6ca1\u6709\u8fd9\u4e2a\u51fd\u6570，\u5c31：#include\u00a0 <string.h><\/li>\n
- \u5982\u679c\u4f20\u8f93\u7684\u662f16\u8fdb\u5236\u6570，\u7528uint8_t\u00a0\u58f0\u660e\u4e0a\u9762\u6570\u7ec4，\u7136\u540e\u4fee\u6539sprintf\u7684\u683c\u5f0f\u5316\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n
\u6dfb\u52a0\u5b8c\u6210\u540e，\u6587\u4ef6\u662f\u8fd9\u6837\u5b50\u7684：<\/p>\n
<\/p>\n<\/p>\n
\u518d\u6b21\u7f16\u8bd1\u3001\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u4e32\u53e3\u52a9\u624b，\u6253\u5f00\u5bf9\u5e94\u7684\u7aef\u53e3\u53f7（\u6ce2\u7279\u7387\u7b49\u53c2\u6570\u4e0d\u7528\u4fee\u6539），<\/p>\n
\u5728\u53d1\u9001\u533a，\u4ee5ASCII\u65b9\u5f0f，\u53d1\u9001\u5b57\u7b26\u4e32（\u56e0\u4e3a\u6dfb\u52a0\u7684\u4ee3\u7801\u91cc\u7528%s\u683c\u5f0f\u5316，\u5904\u7406\u7684\u662f\u5b57\u7b26\u4e32)，<\/p>\n
\u7136\u540e，\u4e32\u53e3\u52a9\u624b\u7684\u63a5\u6536\u533a，\u9a6c\u4e0a\u80fd\u63a5\u6536\u5230\u521a\u624d\u53d1\u51fa\u7684\u6570\u636e！<\/p>\n
\u81f3\u6b64，\u5df2\u5b9e\u73b0\u63a5\u6536\u7684\u5904\u7406\u3002<\/p>\n
<\/p>\n
\n<\/p>\n\u516b\u3001\u63a5\u6536\u4f18\u5316（\u5728\u5916\u90e8\u5904\u7406\u6570\u636e）<\/span><\/h2>\n<\/p>\n\u4e0a\u9762，\u6211\u4eec\u5df2\u5b9e\u73b0：\u83b7\u53d6\u3001\u4f7f\u7528\u63a5\u6536\u5230\u7684\u6570\u636e\u3002<\/p>\n
\u5728\u63a5\u6536\u56de\u8c03\u51fd\u6570\u4e2d，\u76f4\u63a5\u64cd\u4f5c\u6570\u636e\u7684\u53d1\u9001，\u901a\u5e38\u662f\u5b89\u5168\u7684，\u56e0\u4e3a\u8fd9\u79cd\u64cd\u4f5c\u8017\u65f6\u975e\u5e38\u77ed，\u6700\u591a\u7b49\u5f851\u6b21\u4e3b\u673a\u8f6e\u8be2\u5468\u671f（1ms）\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b，\u4e0d\u4f1a\u5bf9\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u6570\u636e\u63a5\u6536\u9020\u6210\u663e\u8457\u5f71\u54cd\u3002<\/p>\n
\u4f46\u662f，\u5982\u679c\u5728\u63a5\u6536\u56de\u8c03\u51fd\u6570\u4e2d\u6267\u884c\u8017\u65f6\u8f83\u957f\u7684\u64cd\u4f5c，\u5982\u663e\u793a\u5230LCD\u6216\u5b58\u50a8\u5230Flash\u7b49，\u8fd9\u4e9b\u64cd\u4f5c\u53ef\u80fd\u9700\u8981\u6570\u6beb\u79d2\u5230\u6570\u5341\u6beb\u79d2\u624d\u80fd\u5b8c\u6210\u3002\u8017\u65f6\u8f83\u957f\u7684\u64cd\u4f5c，\u53ef\u80fd\u4f1a\u5bfc\u81f4\u63a5\u6536\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u6f0f\u5305\u73b0\u8c61\u3002<\/p>\n
\u56e0\u4e3a\u63a5\u6536\u56de\u8c03\u51fd\u6570\u662f\u7531USB\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u8c03\u7528\u7684，\u5c5e\u4e8e\u4e2d\u65ad\u5904\u7406\u7684\u4e00\u90e8\u5206，\u5728\u56de\u8c03\u51fd\u6570\u6267\u884c\u671f\u95f4，\u4e3b\u7a0b\u5e8f\u8fd8\u5904\u4e8e\u4e2d\u65ad\u6302\u8d77\u72b6\u6001，\u5176\u4ed6\u4ee3\u7801\u548c\u4e2d\u65ad\u4e5f\u4f1a\u88ab\u6682\u505c\u6267\u884c，\u5f62\u8c61\u5730\u63cf\u8ff0：\u201c\u5361\u6b7b\u201d\u3002<\/p>\n
\u5982\u679c\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u7684\u6267\u884c\u64cd\u4f5c\u8f83\u8017\u65f6，\u4f1a\u5bfc\u81f4\u4e0b\u4e00\u5305\u6570\u636e\u65e0\u6cd5\u53ca\u65f6\u8fdb\u5165\u4e2d\u65ad，\u4ece\u800c\u9020\u6210\u6570\u636e\u4e22\u5931\u3002<\/p>\n
\u4e3e\u4f8b\u8bf4\u660e：<\/p>\n
\n- A (\u7535\u8111USB\u4e3b\u673a)\u6bcf\u96941ms\u6254\u51fa1\u679a\u9e21\u86cb，B(STM32\u4e2d\u65ad\u670d\u52a1\u51fd\u6570）\u8d1f\u8d23\u63a5\u9e21\u86cb\u3002<\/li>\n
- \u5f53B\u63a5\u9e21\u86cb\u5904\u7406\u5f97\u6bd4A\u5feb，\u5373\u6bd4A\u6254\u51fa\u7684\u95f4\u9694\u66f4\u77ed，\u59820.5ms，\u90a3，\u6ca1\u95ee\u9898\u3002<\/li>\n
- \u4f46\u662f，\u5f53B\u63a5\u9e21\u86cb\u7684\u5904\u7406\u65f6\u95f4\u8f83\u957f，\u5982，\u63a5\u4e86\u9e21\u86cb\u8fd8\u8981\u5199\u4e0a\u4ef7\u683c，\u518d\u653e\u7f6e\u5230\u8d27\u67b6，\u517120ms，\u00a0\u90a3\u80af\u5b9a\u5c31\u63a5\u4e0d\u4f4fA\u6301\u7eed\u6254\u8fc7\u6765\u7684\u9e21\u86cb\u4e86，\u6bcf\u63a51\u4e2a，\u5c31\u4f1a\u4e22\u5931\u540e\u9762\u768419\u4e2a，\u518d\u63a51\u4e2a，\u518d\u4e22\u593119\u4e2a…….;\u00a0\u6ce8\u610f，A\u662f\u4e0d\u7ba1B\u662f\u5426\u6570\u636e\u4e22\u5305\u7684，\u5b83\u53ea\u8d1f\u8d23\u6bcf1ms\u6254(\u53d1\u9001)\u4e00\u6b21\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u9700\u8981\u91c7\u53d6\u4e00\u79cd\u7b56\u7565，\u4f7f\u5f97\u7a0b\u5e8f\u7684\u4e2d\u65ad\u54cd\u5e94\u3001\u201c\u5361\u6b7b\u201d\u5360\u65f6，\u5c3d\u53ef\u80fd\u5730\u77ed：<\/p>\n
\n- \u63a5\u6536\u6570\u636e：\u5728\u4e2d\u65ad\u56de\u8c03\u51fd\u6570\u4e2d，\u6211\u4eec\u4ec5\u6267\u884c\u5fc5\u8981\u7684\u6570\u636e\u590d\u5236\u64cd\u4f5c，\u5373\u628a\u63a5\u6536\u5230\u7684\u6570\u636e\u8fc5\u901f\u590d\u5236\u5230\u5916\u90e8\u7f13\u5b58\u4e2d\u3002\u8fd9\u4e00\u64cd\u4f5c\u7684\u8017\u65f6\u901a\u5e38\u5728us\u7ea7\u522b;<\/li>\n
- \u5904\u7406\u6570\u636e：\u5728\u4e3b\u7a0b\u5e8f\u7684while\u5faa\u73af\u4e2d，\u6211\u4eec\u518d\u5bf9\u6570\u636e\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u5904\u7406\u3002\u7531\u4e8e\u8fd9\u4e00\u5904\u7406\u8fc7\u7a0b\u4e0d\u5360\u7528\u4e2d\u65ad\u8d44\u6e90，\u56e0\u6b64\u4e0d\u4f1a\u5f71\u54cd\u7a0b\u5e8f\u5bf9\u65b0\u6570\u636e\u7684\u63a5\u6536;<\/li>\n<\/ul>\n
\u8fd9\u79cd\u7b56\u7565\u901a\u8fc7\u5206\u79bb\u6570\u636e\u63a5\u6536\u548c\u6570\u636e\u5904\u7406\u4e24\u4e2a\u6b65\u9aa4，\u786e\u4fdd\u4e86\u7a0b\u5e8f\u80fd\u591f\u5feb\u901f\u54cd\u5e94\u8fde\u7eed\u7684\u6570\u636e\u6d41，\u540c\u65f6\u907f\u514d\u4e86\u56e0\u5904\u7406\u65f6\u95f4\u8fc7\u957f\u800c\u5bfc\u81f4\u7684\u6570\u636e\u4e22\u5931\u3002<\/p>\n<\/p>\n
\u64cd\u4f5c\u51714\u4e2a\u6b65\u9aa4，\u5177\u4f53\u5982\u4e0b：<\/p>\n
1\u3001\u589e\u52a0\u5168\u5c40\u53d8\u91cf<\/p>\n
\u5728usbd_cdc_if.c\u6587\u4ef6\u5927\u7ea697\u884c，\u914d\u5bf9\u7684\u6ce8\u91ca\u5185，\u5b9a\u4e49\u4e24\u4e2a\u53d8\u91cf：<\/p>\n
\/* USER CODE BEGIN PRIVATE_VARIABLES *\/
\nuint8_t myUsbRxData[64] = { 0 }; \/\/ \u63a5\u6536\u5230\u7684\u6570\u636e
\nuint16_t myUsbRxNum = 0; \/\/ \u63a5\u6536\u5230\u7684\u5b57\u8282\u6570<\/p>\n
\/* USER CODE END PRIVATE_VARIABLES *\/ <\/p>\n
\u73b0\u5728，\u5b83\u4fe9\u53ea\u662f\u672c\u5730\u53d8\u91cf，\u7b49\u4f1a\u8981\u5728main\u4e2d\u7528extern\u518d\u58f0\u660e\u4e00\u6b21，\u624d\u80fd\u88ab\u5916\u90e8\u8c03\u7528\u3002<\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n<\/p>\n
2\u3001\u4fee\u6539\u63a5\u6536\u56de\u8c03\u51fd\u6570<\/p>\n
\u5728CDC_Receive_FS()\u00a0\u91cc，\u5220\u9664\u6211\u4eec\u4e0a\u8282\u589e\u52a0\u7684\u6d4b\u8bd5\u4ee3\u7801;<\/p>\n
\u628aBuf\u548c*Len\u7684\u6570\u636e，\u590d\u5236\u5230\u6211\u4eec\u521a\u624d\u7684\u4e24\u4e2a\u53d8\u91cf\u91cc\u3002\u51fd\u6570\u4fee\u6539\u6210：<\/p>\n
static int8_t CDC_Receive_FS(uint8_t *Buf, uint32_t *Len)
\n{
\n \/* USER CODE BEGIN 6 *\/
\n \/\/ \u628aBuf\u91cc\u9762\u7684\u6570\u636e，\u590d\u5236\u5230\u5916\u90e8\u7f13\u5b58
\n memset(myUsbRxData, 0, 64); \/\/ \u6e050\u7f13\u5b58\u533a
\n memcpy(myUsbRxData, Buf, *Len); \/\/ \u628a\u63a5\u6536\u5230\u7684\u6570\u636e，\u590d\u5236\u5230\u81ea\u5df1\u7684\u7f13\u5b58\u533a\u4e2d
\n myUsbRxNum = *Len; \/\/ \u590d\u5236\u5b57\u8282\u6570
\n memset(Buf, 0, 64); \/\/ \u5904\u7406\u5b8c\u6570\u636e，\u6e050\u63a5\u6536\u7f13\u5b58; <\/p>\n
\/\/ CubeMX\u751f\u6210\u7684\u4ee3\u7801，\u4fdd\u7559
\n USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]); \/\/ \u8bbe\u7f6e\u4e0b-\u4e2a\u63a5\u6536\u7f13\u51b2\u533a
\n USBD_CDC_ReceivePacket(&hUsbDeviceFS); \/\/ \u542f\u52a8\u4e0b\u4e00\u4e2a\u6570\u636e\u5305\u7684\u63a5\u6536
\n return (USBD_OK);
\n \/* USER CODE END 6 *\/
\n} <\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n
\u73b0\u5728，\u6570\u636e\u63a5\u6536\u90e8\u5206，\u5df2\u5904\u7406\u597d\u4e86\u3002<\/p>\n
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3\u3001 \u5728\u5916\u90e8\u7528extern\u58f0\u660e\u53d8\u91cf，\u4ee4\u5916\u90e8\u53ef\u8c03\u7528\u6570\u636e<\/p>\n
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\u5982，\u53ef\u4ee5\u5728LCD\u6587\u4ef6，\u4e5f\u53ef\u4ee5\u5728SD\u5361\u7684\u6587\u4ef6\u4e2d，\u90fd\u884c\u3002<\/p>\n
\u5efa\u8bae\u5728main.h\u6587\u4ef6\u4e2d\u58f0\u660e，\u5176\u5b83\u6587\u4ef6\u518d#include "main.h"，\u8fd9\u6837，\u53ef\u4ee5\u4ee4\u53d8\u91cf\u5168\u5c40\u53ef\u7528\u3002<\/p>\n
\n- \u6253\u5f00 main.c，\u53f3\u51fb\u7a7a\u767d，\u70b9\u51fb"Toggle\u00a0Header\/Code File"，\u53ef\u4ee5\u8df3\u8f6c\u5230\u5934\u6587\u4ef6：main.h\u00a0\u00a0<\/li>\n<\/ul>\n
<\/p>\n<\/p>\n
\u5728main.h\u4e2d，\u5927\u7ea638\u884c，\u627e\u5230\u00a0\u914d\u5bf9\u7684\u6ce8\u91ca\u884c\u00a0\/* USER CODE BEGIN ET *\/<\/p>\n
\u7528 extern\u00a0\u518d\u6b21\u58f0\u660e\u521a\u624d\u4e24\u4e2a\u53d8\u91cf\u3002\u5982\u4e0b（\u53ef\u590d\u5236）：<\/p>\n
\u6ce8\u610f，\u662f\u53ea\u58f0\u660e，\u4e0d\u8981\u8d4b\u503c，\u5426\u5219\u7f16\u8bd1\u9519\u8bef\u3002<\/p>\n
\/* USER CODE BEGIN ET *\/
\nextern uint8_t myUsbRxData[ ] ;
\nextern uint16_t myUsbRxNum ;<\/p>\n
\/* USER CODE END ET *\/ <\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n
\u4ee3\u7801\u89c4\u8303：<\/span> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u91cc\u7684\u793a\u8303，\u4f7f\u7528\u5168\u5c40\u53d8\u91cf，\u53ea\u662f\u4e3a\u4e86\u66f4\u6e05\u6670\u5730\u6f14\u793a\u64cd\u4f5c\u601d\u8def\u3002<\/p>\n\u00a0 \u00a0 \u00a0 \u00a0 \u9879\u76ee\u4e2d，\u5c3d\u91cf\u907f\u514d\u4f7f\u7528\u5168\u5c40\u53d8\u91cf；\u4e0d\u540c\u6587\u4ef6\u95f4\u7684\u6570\u636e\u83b7\u53d6，\u53ef\u4ee5\u5c01\u88c5\u6210\u51fd\u6570，\u5982 CDC_GetRxData()\u3001CDC_GetRxNum()，\u8fd4\u56de\u6570\u636e\u5730\u5740\u3001\u63a5\u6536\u7684\u5b57\u8282\u6570\u3002\u00a0\u00a0\u00a0\u00a0<\/p>\n<\/p>\n
4\u3001\u4f7f\u7528\u63a5\u6536\u5230\u6570\u636e<\/p>\n
\u5728main.c\u7684while\u5faa\u73af\u4e2d，\u901a\u8fc7\u5224\u65admyUsbRxNum\u7684\u503c，\u53ea\u8981\u5927\u4e8e0，\u5c31\u8868\u793a\u6536\u5230\u6570\u636e\u4e86<\/p>\n
\u8bb0\u5f97\u6bcf\u6b21\u5904\u7406\u5b8c\u6570\u636e，\u628amyUsbRxNum\u7f6e0，\u4ee5\u4fbf\u4e8e\u4e0b\u4e00\u8f6e\u7684\u5224\u65ad\u3002<\/p>\n
<\/p>\n
\u518d\u6b21\u70e7\u5f55，\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u6253\u5f00\u4e32\u53e3\u52a9\u624b，\u53d1\u9001\u6d4b\u8bd5\u6587\u672c，\u53ef\u4ee5\u53d1\u73b0，\u80fd\u6210\u529f\u6536\u5230STM32\u53d1\u8fc7\u6765\u7684\u56de\u4f20\u6570\u636e\u3002<\/p>\n
<\/p>\n<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u679c，\u5916\u90e8\u5904\u7406\u6570\u636e\u7684\u901f\u5ea6\u8ddf\u4e0d\u4e0a，\u5982，\u5728while\u91cc\u6bcf\u6b21\u6536\u5230\u6570\u636e\u90fd\u8981\u663e\u793a\u5230LCD，LCD\u7684\u901f\u5ea6\u8fdc\u6162\u4e8eUSB\u7684\u4f20\u8f93，\u90a3，\u8fd8\u4e0d\u662f\u53d8\u76f8\u4e22\u4e86\u6570\u636e？！\u662f\u7684，\u4f1a\u6709\u8fd9\u79cd\u60c5\u51b5！<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u4f46，\u90a3\u5df2\u7ecf\u662f\u7a0b\u5e8f\u903b\u8f91\u548c\u65f6\u95f4\u7247\u673a\u5236\u7684\u95ee\u9898\u4e86，3\u59293\u591c\u4e5f\u55d1\u4e0d\u5b8c！<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u672c\u8282\u53ea\u8ba8\u8bba：\u786e\u4fdd\u6bcf\u4e00\u5305\u6570\u636e，\u90fd\u80fd\u88ab\u6b63\u5e38\u63a5\u6536\u5230\u3002\u5916\u90e8\u80fd\u5426\u53ca\u65f6\u5904\u7406，\u4e0d\u8ff0\u3002<\/p>\n<\/p>\n
\u81f3\u6b64，\u672c\u7bc7\u5b8c\u7ed3\u3002<\/p>\n
\u5982\u6709\u9519\u6f0f，\u671b\u7559\u8a00\u6307\u6b63，\u53ca\u65f6\u66f4\u65b0！！<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
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\u672c\u7bc7\u4e3a\u4e86\u5de5\u7a0b\u7684\u6e05\u6670，\u5c06\u4ece0\u5f00\u59cb， \u65b0\u5efa\u4e00\u4e2a\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u7684\u5de5\u7a0b\u3002<\/p>\n
\u65e5\u5e38\u505a\u9879\u76ee，\u4e0d\u5efa\u8bae\u65b0\u5efa，\u800c\u662f\u590d\u5236\u5df2\u6709\u7684\u65e7\u5de5\u7a0b，\u901a\u8fc7CubeMX\u589e\u5220\u9700\u8981\u7684\u529f\u80fd\u3002<\/p>\n
\u8fd9\u6837\u80fd\u51cf\u5c11\u4e00\u4e9b\u5e38\u7528\u529f\u80fd\u7684\u518d\u6b21\u914d\u7f6e，\u5982\u6309\u952e\u3001UART\u7b49；<\/p>\n
\u590d\u7528\u65e7\u5de5\u7a0b\u91cc\u5df2\u9a8c\u8bc1\u8fc7\u7684\u529f\u80fd，\u80fd\u6709\u6548\u5730\u51cf\u5c11\u5e38\u7528\u529f\u80fd\u7684\u8c03\u8bd5\u65f6\u95f4\u3002<\/p>\n<\/p>\n
1\u3001\u4ee5\u82af\u7247\u578b\u53f7\u65b0\u5efa<\/p>\n
<\/p>\n<\/p>\n
2\u3001\u641c\u7d22\u82af\u7247\u578b\u53f7<\/p>\n
<\/p>\n<\/p>\n
3\u3001\u8bbe\u7f6e\u8c03\u8bd5\u6a21\u5f0f<\/p>\n
\u8fdb\u5165\u914d\u7f6e\u9875\u9762\u540e，\u517b\u6210\u4e60\u60ef，\u4f18\u5148\u8bbe\u7f6e\u8c03\u8bd5\u6a21\u5f0f：Serial Wire\u3002<\/p>\n
<\/p>\n<\/p>\n
4\u3001\u9009\u62e9\u6676\u632f\u6e90<\/p>\n
\u5916\u90e8\u9ad8\u901f\u6676\u632f\u6e90(HSE)：Crystal\/Ceramic Resonator<\/p>\n
<\/p>\n<\/p>\n
5\u3001USB\u5de5\u4f5c\u6a21\u5f0f<\/p>\n
USB_OTG_FS：\u9009\u62e9 Device_Only;\u00a0 \u8bbe\u5907\u6a21\u5f0f(\u4ece\u673a\u6a21\u5f0f);\u00a0 \u00a0\u5176\u5b83\u53c2\u6570，\u9ed8\u8ba4\u3002<\/p>\n
\u6709\u4e9b\u82af\u7247\u578b\u53f7，\u5982F103\u7cfb\u5217，CubeMX\u4e0a\u7684\u663e\u793a\u662f：USB_FS，\u914d\u7f6e\u6b65\u9aa4\u662f\u4e00\u6837\u7684\u3002<\/p>\n
<\/p>\n<\/p>\n
6\u3001\u4e2d\u95f4\u4ef6\u7ec4\u4ef6<\/p>\n
USB_DEVICE：\u9009\u62e9 CDC (VPC)；\u00a0 \u5176\u5b83\u53c2\u6570，\u9ed8\u8ba4;<\/p>\n
<\/p>\n<\/p>\n
6\u3001\u914d\u7f6e\u7cfb\u7edf\u65f6\u949f<\/p>\n
\u2460\u00a0\u5f53\u542f\u7528USB\u529f\u80fd\u540e，\u8fdb\u5165\u65f6\u949f\u914d\u7f6e\u9875\u9762\u65f6，\u5f39\u7a97：\u00a0\u662f\u5426\u81ea\u52a8\u914d\u7f6e\u7cfb\u7edf\u65f6\u949f?\u00a0 \u9009\u62e9：No \u3002<\/p>\n
<\/p>\n<\/p>\n
\u2461\u00a0\u5148\u786e\u8ba4\u677f\u4e0a\u7684\u6676\u632f\u503c<\/p>\n
- \n
- \u914d\u7f6e\u65f6\u949f\u524d，\u5f88\u91cd\u8981\u7684\u4e00\u4e2a\u4e8b：\u5148\u6838\u5bf9\u5f00\u53d1\u677f\u4e0a\u7684\u6676\u632f\u9891\u7387（\u5728\u6676\u632f\u4e0a\u7684\u6570\u5b57）！<\/li>\n
- \u6676\u632f\u9891\u7387\u914d\u7f6e\u9519\u8bef\u65f6，\u7f16\u8bd1\u4e0d\u4f1a\u62a5\u9519，\u4f46\u7cfb\u7edf\u53ef\u80fd\u4e0d\u8fd0\u884c\u3001\u901a\u4fe1\u9519\u4e71\u7b49，\u540e\u671f\u6392\u67e5\u5f88\u8d39\u65f6\u95f4！<\/li>\n
- \u76ee\u524dSTM32\u7684\u677f\u5b50，\u5e38\u7528\u7684\u5916\u90e8\u9ad8\u901f\u6676\u632f\u6709\u4e09\u79cd：8M\u300112M\u300125M\u3002<\/li>\n<\/ul>\n<\/p>\n<\/p>\n
\u2462\u00a0STM32F103 \u65f6\u949f\u914d\u7f6e：<\/p>\n
\n
\u6676\u632f\u503c\u8f93\u5165\u5206\u9891\u8f93\u51fa\u500d\u9891USB\u5206\u9891APB1\u5206\u9891APB2\u5206\u9891\u7cfb\u7edf\u00a0\u65f6\u949f<\/tr>\n \n\n 8<\/td>\n 1<\/td>\n 9<\/td>\n 1.5<\/td>\n 2<\/td>\n 1<\/td>\n 72MHz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/p>\n<\/p>\n\u2463\u00a0STM32F4xx \u65f6\u949f\u914d\u7f6e：<\/p>\n
\u6ce8\u610f：F4\u7cfb\u5217，\u5404\u677f\u5546\u7565\u6709\u4e0d\u540c，\u5927\u90e8\u5206\u662f25M,\u00a0\u5c11\u90e8\u5206\u662f8M，\u4f7f\u7528\u6548\u679c\u4e00\u6837\u3002<\/p>\n
\n
\u6676\u632f\u503c\u8f93\u5165\u5206\u9891\u8f93\u51fa\u500d\u9891\u8f93\u51fa\u5206\u9891USB\u5206\u9891APB1\u5206\u9891APB2\u5206\u9891\u7cfb\u7edf\u65f6\u949f<\/tr>\n \n\n 25<\/td>\n 25<\/td>\n 336<\/td>\n 2<\/td>\n 7<\/td>\n 4<\/td>\n 2<\/td>\n 168MHz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/p>\n<\/p>\n7\u3001\u5de5\u7a0b\u914d\u7f6e<\/p>\n
<\/p>\n- \n
- \u5de5\u7a0b\u540d\u79f0\u3001\u8def\u5f84，\u8fd9\u4e24\u9879，\u5fc5\u987b\u82f1\u6587\u3002\u5426\u5219，\u751f\u6210\u7684\u5de5\u7a0b\u5c06\u4f1a\u7f3a\u5c11\u542f\u52a8\u6587\u4ef6<\/li>\n
- \u5f00\u53d1\u5de5\u5177：MDK-ARM,\u00a0 \u5373\u751f\u6210Keil\u5de5\u7a0b\u00a0<\/li>\n
- \u5806\u5927\u5c0f，\u5efa\u8bae：0x400<\/li>\n
- \u6808\u5927\u5c0f，\u5efa\u8bae：0x1000<\/li>\n<\/ul>\n<\/p>\n
8\u3001\u6587\u4ef6\u548c\u4ee3\u7801\u7684\u914d\u7f6e<\/p>\n
<\/p>\n<\/p>\n9\u3001\u751f\u6210<\/p>\n
<\/p>\n<\/p>\n\u7a0d\u7b49\u00a0\u7247\u523b：<\/p>\n
<\/p>\n<\/p>\n\u751f\u6210\u7684\u5de5\u7a0b\u6587\u4ef6\u5939：<\/p>\n
<\/p>\nKeil\u5de5\u7a0b\u7684\u5165\u53e3\u6587\u4ef6：<\/p>\n
<\/p>\n<\/p>\n
\n<\/h2>\n
<\/h2>\n
\u4e09\u3001Keil \u5de5\u7a0b\u914d\u7f6e<\/span><\/h2>\n<\/p>\n
\u6309\u4e0a\u8ff0，\u53cc\u51fb\u6253\u5f00Keil\u5de5\u7a0b\u3002<\/p>\n
1\u3001\u65b0\u5efa\u7684\u5de5\u7a0b，\u9700\u8981\u8bbe\u7f6e\u4e00\u6b21\u4eff\u771f\u5668\u53c2\u6570 \u3002（\u70b9\u51fb OK \u4fdd\u5b58，\u5426\u5219\u65e0\u6548）\u3002<\/p>\n
<\/p>\n<\/p>\n2\u3001\u914d\u7f6e\u5e38\u7528\u7684\u8c03\u8bd5\u9009\u9879<\/p>\n
\u4e0b\u9762\u8fd9\u4e24\u9879\u662f\u975e\u5fc5\u8981\u7684，\u5efa\u8bae\u6253\u52fe\u4f7f\u7528；\u7f16\u8bd1\u540e\u751f\u6548; \u6253\u52fe\u4f1a\u4ee4\u7f16\u8bd1\u901f\u5ea6\u53d8\u6162；<\/p>\n
<\/p>\n- \n
- Debug Infomation: \u751f\u6210\u8c03\u8bd5\u4fe1\u606f\u3002debug\u6a21\u5f0f\u4e2d\u65e0\u6cd5\u8bbe\u7f6e\u65ad\u70b9，\u5c31\u662f\u8fd9\u4e2a\u9009\u9879\u6ca1\u6253\u52fe\u3002<\/li>\n
- Bowse Infomation: \u751f\u6210\u8ffd\u8e2a\u4fe1\u606f\u3002\u5982，\u53f3\u51fb\u51fd\u6570\u3001\u53d8\u91cf，\u70b9\u51fb\u5f39\u51fa\u83dc\u5355：Go To Definition…<\/li>\n<\/ul>\n
\u00a03\u3001\u7f16\u8bd1 \u9a8c\u8bc1<\/p>\n
- \n
- 0\u00a0Error，\u6b63\u7a0b\u6b63\u5e38\u3002<\/li>\n
- \u6709 Error，\u5931\u8d25；\u5e94\u8be5\u662f (2-7) \u90a3\u4e00\u6b65\u5de5\u7a0b\u540d\u79f0\u3001\u8def\u5f84\u6709\u4e2d\u6587\u3002\u4fee\u6539\u540e\u91cd\u65b0\u751f\u6210\u5373\u53ef\u3002<\/li>\n
- \u5148\u522b\u70e7\u5f55，\u522b\u70e7\u5f55，\u522b\u70e7\u5f55\u3002<\/li>\n<\/ul>\n<\/p>\n<\/p>\n
\n\u56db\u3001\u5b9e\u73b0USB\u6a21\u62df\u63d2\u62d4<\/span><\/h2>\n<\/p>\n
\u901a\u8fc7 CubeMX\u00a0\u914d\u7f6e\u540e\u751f\u6210\u7684\u5de5\u7a0b，\u5b83\u5df2\u5e26\u9700\u8981\u7684\u521d\u59cb\u5316\u4ee3\u7801\u3001\u914d\u7f6e\u4ee3\u7801\u3001\u57fa\u7840\u51fd\u6570\u7b49\u3002<\/p>\n
\u6211\u4eec\u53ea\u9700\u5728\u5de5\u7a0b\u91cc，\u6309\u9700\u8fdb\u884c\u7b80\u5355\u7684\u914d\u7f6e\u3001\u4fee\u6539\u4ee3\u7801，\u5373\u53ef\u4f7f\u7528\u3002<\/p>\n<\/p>\n
\u00a01\u3001\u5305\u542b USB\u63a5\u53e3\u00a0\u7684\u5934\u6587\u4ef6<\/p>\n
- \n
- \u6253\u5f00 main.c\u6587\u4ef6，\u5927\u7ea6\u7b2c26\u884c，\u914d\u5bf9\u7684\u00a0\/*\u00a0USER CODE ……\u00a0Includes *\/\u00a0<\/span>\u6ce8\u91ca\u4e4b\u95f4,<\/li>\n
- \u6dfb\u52a0：#include\u00a0 "usbd_cdc_if.h"<\/li>\n<\/ul>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n<\/p>\n2\u3001\u589e\u52a0 USB\u6a21\u62df\u63d2\u62d4 <\/p>\n
\u6211\u4eec\u5728\u8c03\u8bd5STM32\u7a0b\u5e8f\u671f\u95f4，\u9700\u8981\u53cd\u590d\u5730\u00a0\u4fee\u6539\u7a0b\u5e8f\u3001\u7f16\u8bd1\u3001\u70e7\u5f55;\u00a0 \u8fd9\u662f\u5e38\u89c4\u64cd\u4f5c，\u7528\u4e8e\u8c03\u8bd5\u5176\u5b83\u901a\u4fe1\u6a21\u5757，\u5982DHT11\u3001ESP8266\u7b49，\u662f\u6ca1\u6709\u95ee\u9898\u7684，\u4f46\u7528\u4e8e\u8c03\u8bd5USB\u7684\u901a\u4fe1，\u5c31\u4f1a\u7ffb\u8f66\u3002<\/p>\n
\u5f53\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf\u4e00\u76f4\u63d2\u5728USB\u53e3\u4e0a，\u7a0b\u5e8f\u91cd\u65b0\u70e7\u5f55\u540e，\u7a0b\u5e8f\u7684\u91cd\u65b0\u8fd0\u884c，\u5c06\u5bfc\u81f4\u901a\u4fe1\u9519\u8bef\u3001USB\u7aef\u53e3"\u5047\u6b7b"\u7b49\u73b0\u8c61;\u00a0<\/p>\n
\u4e0a\u6587\u4e2d\u5df2\u4ecb\u7ecd，\u7535\u8111\u7aefUSB\u53e3\u6ca1\u6709\u63d2\u5165\u8bbe\u5907\u65f6，DP\u548cDM\u7ebf，\u662f\u4f4e\u7535\u5e73\u72b6\u6001，\u800c\u8bbe\u5907\u7aef\u7684DP\u7ebf，\u67091.5K\u7535\u963b\u4e0a\u62c9\u52303.3V，\u5f53\u8bbe\u5907\u63d2\u5165\u5230\u7535\u8111USB\u53e3，USB\u53e3\u7684DP\u7ebf\u5c31\u4f1a\u88ab\u7f6e\u9ad8\u7535\u5e73，\u4e3b\u673a\u662f\u4f9d\u9760\u8fd9\u4e2a\u673a\u5236\u5224\u65ad\u8bbe\u5907\u662f\u5426\u63d2\u5165\u3001\u62d4\u51fa，\u7ee7\u800c\u89e6\u53d1\u4e0d\u540c\u7684\u52a8\u4f5c，\u5982\u679a\u4e3e\u3001\u91ca\u653e\u7aef\u53e3\u7b49\u3002<\/p>\n
\u5f53\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf\u4e00\u76f4\u63d2\u5728USB\u53e3\u4e0a，\u5728STM32\u70e7\u5f55\u7a0b\u5e8f\u91cd\u65b0\u8fd0\u884c\u540e，\u7a0b\u5e8f\u91cc\u7684USB\u4ee3\u7801\u7b49\u5f85\u7740\u4e3b\u673a\u65b9\u53d1\u8d77\u679a\u4e3e\u8fc7\u7a0b；\u800c\u8fd9\u4e2a\u671f\u95f4\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf\u6ca1\u6709\u65ad\u5f00，\u4e3b\u673a\u65b9\u8ba4\u4e3a\u8bbe\u5907\u65b9\u4e00\u76f4\u5728\u7ebf，\u65e9\u5df2\u679a\u4e3e\u6210\u529f，\u4e00\u76f4\u5bf9\u5176\u8f6e\u8be2\u6570\u636e\u6536\u53d1\u3002\u53cc\u65b9\u201c\u5357\u8f95\u5317\u8f99，\u80e1\u8a00\u4e71\u8bed\u201d，\u6ce8\u5b9a\u7ffb\u8f66\u3002<\/p>\n
\u6b63\u5e38\u64cd\u4f5c\u662f：\u6bcf\u6b21\u70e7\u5f55\u524d，\u5148\u628a\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf\u62d4\u4e0b\u6765，\u70e7\u5f55\u597d\u4e86，\u518d\u63d2\u4e0a，……\u3002<\/p>\n
\u4e3a\u4e86\u907f\u514d\u8c03\u8bd5\u671f\u95f4\u9891\u7e41\u5730\u624b\u52a8\u64cd\u4f5c，\u6211\u4eec\u53ef\u4ee5\u5728\u7a0b\u5e8f\u5f00\u8dd1\u540e\u3001USB\u521d\u59cb\u5316\u524d，\u7528\u4ee3\u7801\u628aPA12\u7f6e\u4f4e，\u4f7fD+\u7ebf\u4e3a\u4f4e\u7535\u5e73，\u6301\u7eed\u4e00\u6bb5\u65f6\u95f4，\u6a21\u62dfUSB\u62d4\u51fa\u52a8\u4f5c，\u4ee4\u4e3b\u673a\u8ba4\u4e3a\u8bbe\u5907\u5df2\u65ad\u5f00\u8fde\u63a5，\u91ca\u653e\u7aef\u53e3; \u7136\u540e，\u5f53\u7a0b\u5e8f\u8fd0\u884c\u5230\u540e\u9762\u7684USB\u521d\u59cb\u5316\u51fd\u6570\u65f6，PA12\u4f1a\u88ab\u6b63\u5e38\u914d\u7f6e（DP\u7ebf\u7535\u5e73\u88ab\u7f6e\u9ad8)，USB\u4e3b\u673a\u5c31\u4f1a"\u53d1\u73b0"\u6709\u8bbe\u5907\u63d2\u5165，\u5f00\u59cb\u5c1d\u8bd5\u679a\u4e3e\u3001\u914d\u7f6e;<\/p>\n
\u5177\u4f53\u64cd\u4f5c：<\/p>\n
- \n
- \u6253\u5f00\u00a0usbd_conf.c\u00a0\u6587\u4ef6，\u5927\u7ea6\u7b2c70\u884c\u9644\u8fd1，\u627e\u5230HAL_PCD_MspInit ( )\u51fd\u6570;<\/li>\n
- \u5728\u4e24\u5bf9 \/* USER … 0 *\/\u00a0\u6ce8\u91ca\u4e4b\u95f4，\u7ea675\u884c，\u6dfb\u52a0PA12\u5f15\u811a\u7f6e\u4f4e\u7535\u5e73\u64cd\u4f5c,\u00a0 \u5982\u4e0b（\u53ef\u590d\u5236）:<\/li>\n<\/ul>\n
__HAL_RCC_GPIOA_CLK_ENABLE(); \/\/ \u4f7f\u80fdGPIOA\u7aef\u53e3
\n GPIO_InitTypeDef GPIO_InitStruct = {0}; \/\/ \u58f0\u660e\u7ed3\u6784\u4f53; \u5982\u679c\u4e0e\u6587\u4e2d\u4f4d\u7f6e\u76f8\u540c，\u8fd9\u884c\u53ef\u4e0d\u5199
\n GPIO_InitStruct.Pin = GPIO_PIN_12; \/\/ \u5f15\u811aPA12, \u5373D+
\n GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; \/\/ \u5f15\u811a\u5de5\u4f5c\u6a21\u5f0f
\n GPIO_InitStruct.Pull = GPIO_PULLDOWN; \/\/ \u4e0b\u62c9
\n GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; \/\/ \u5f15\u811a\u53cd\u8f6c\u901f\u5ea6
\n HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); \/\/ \u521d\u59cb\u5316
\n HAL_Delay(5); \/\/ \u6301\u7eed\u7247\u523b <\/p>\n\u6ce8\u610f，\u6700\u540e\u4e00\u884c\u7684\u5ef6\u65f6，\u662f\u5fc5\u987b\u7684，\u5efa\u8bae\u57285ms\u5de6\u53f3;<\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n\u589e\u52a0\u8fd9\u6bb5\u4ee3\u7801\u540e，\u518d\u65e0\u9700\u624b\u52a8\u63d2\u62d4\u00a0\u865a\u62df\u4e32\u53e3\u7684USB\u00a0\u7ebf\u4e86，\u7a0b\u5e8f\u5c06\u6a21\u62df \u201c\u00a0\u65ad\u5f00\u3001\u63d2\u5165\u201d;<\/p>\n
\u518d\u6b21\u7f16\u8bd1，\u786e\u4fdd\u4e0a\u8ff0\u64cd\u4f5c\u6b63\u5e38 （\u5148\u522b\u70e7\u5f55）\u3002<\/p>\n<\/p>\n
\n<\/h2>\n
<\/h2>\n
\u4e94\u3001\u53d1\u9001<\/span><\/h2>\n<\/p>\n
\u53d1\u9001\u6570\u636e\u7684\u51fd\u6570<\/p>\n
uint8_t CDC_Transmit_FS ( uint8_t* Buf, uint16_t Len ); <\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u51fd\u6570\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570：\u6570\u636e\u7f13\u51b2\u533a\u7684\u5730\u5740\u3001\u5b57\u8282\u6570\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u679cUSB\u8bbe\u5907\u6b63\u5fd9，\u5b83\u4f1a\u8fd4\u56deUSBD_BUSY\u72b6\u6001\u3002<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u4e2a\u51fd\u6570\u7684\u4f5c\u7528\u662f\u8bbe\u7f6e\u4f20\u8f93\u6570\u636e\u7684\u7f13\u51b2\u533a，\u5e76\u6807\u8bb0\u6570\u636e\u5305\u4e3a\u5f85\u53d1\u9001\u3002\u6570\u636e\u5e76\u975e\u7acb\u523b\u53d1\u51fa，\u800c\u662f\u88ab\u5b58\u50a8\u5728USB\u5916\u8bbe\u7684\u7f13\u51b2\u533a\u4e2d，\u7b49\u5f85\u4e3b\u673a\u8f6e\u8be2\u8bf7\u6c42\u4f20\u8f93\u3002<\/p>\n<\/p>\n
\u53d1\u9001\u793a\u8303\u64cd\u4f5c<\/p>\n
- \n
- \u5728main.c\u00a0\u7684 while\u00a0\u5faa\u73af\u4e2d，\u6dfb\u52a0\u4e09\u884c\u6d4b\u8bd5\u4ee3\u7801：1\u884c\u5ef6\u65f6\u3001\u4e24\u884c\u53d1\u9001\u6570\u636e;<\/li>\n<\/ul>\n
\u6ce8\u610f：\u662f\u5171\u4e09\u884c，1\u884c\u5ef6\u65f6，2\u884c\u53d1\u9001\u3002<\/p>\n
\u8bf7\u4e25\u683c\u6309\u7167\u8fd9\u4e09\u884c\u6765\u5199，\u56e0\u4e3a\u6211\u4eec\u8981\u987a\u5e26\u5b9e\u73b0\u4e00\u4e2abug,\u00a0 \u7136\u540e\u4e0b\u9762\u65b9\u4fbf\u89e3\u91ca\u5177\u4f53\u539f\u56e0！<\/p>\n
<\/p>\n\u65b0\u624b，\u60f3\u7701\u65f6\u95f4，\u5c31\u8bf7\u6309\u6b65\u9aa4\u64cd\u4f5c\u00a0：<\/p>\n
- \n
- \u5148\u522b\u63d2\u865a\u62df\u4e32\u53e3\u6240\u7528\u7684USB\u7ebf<\/li>\n
- \u7f16\u8bd1\u3001\u70e7\u5f55\u4ee3\u7801<\/li>\n
- \u6253\u5f00\u4e32\u53e3\u52a9\u624b, （\u8fd9\u65f6\u662f\u6ca1\u6709\u63d2\u865a\u62df\u4e32\u53e3USB\u7ebf\u7684），\u67e5\u770b\u76ee\u524d\u6709\u54ea\u4e9b\u7aef\u53e3\u53f7<\/li>\n
- \u63d2\u5165\u865a\u62df\u4e32\u53e3\u7684USB\u7ebf，\u5230\u5f00\u53d1\u677f\u7684 USB-Slave\u63a5\u53e3\u00a0<\/li>\n
- ( \u524d\u63d0：win10\u300111\u7cfb\u7edf\u5df2\u5e26\u865a\u62df\u4e32\u53e3\u9a71\u52a8; win7\u8981\u624b\u52a8\u5b89\u88c5\u9a71\u52a8：\u865a\u62df\u4e32\u53e3\u4e0b\u8f7d)<\/li>\n
- ( \u7535\u8111\u4f1a\u81ea\u52a8\u8bc6\u522b\u5230\u8bbe\u5907；\u5982\u679c\u662f\u7b2c\u4e00\u6b21\u4f7f\u7528\u865a\u62df\u4e32\u53e3，\u7535\u8111\u5c06\u81ea\u52a8\u5b89\u88c5\u9a71\u52a8\u7a0b\u5e8f)<\/li>\n
- \u68c0\u67e5\u4e32\u53e3\u52a9\u624b，\u53d1\u73b0\u591a\u4e86\u4e00\u4e2a\u7aef\u53e3\u53f7， \u9009\u62e9\u5b83，\u6ce2\u7279\u7387\u7b49\u53c2\u6570\u4e0d\u7528\u4fee\u6539，\u6253\u5f00\u7aef\u53e3;<\/li>\n<\/ul>\n
\u63a5\u7ebf，\u5982\u4e0b\u56fe（\u793a\u4f8b\u6240\u7528\u7684\u5f00\u53d1\u677f）：<\/p>\n
- \n
- \u5de6\u4fa7\u4e3a\u7528\u6237USB\u63a5\u53e3，\u5df2\u8fde\u63a5PA11\u3001PA12，\u6211\u4eec\u5c31\u662f\u7528\u8fd9\u4e2aU\u53e3\u5b9e\u73b0\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u3002<\/li>\n
- \u53f3\u4fa7\u662f\u677f\u8f7d\u4eff\u771f\u5668CMSIS DAP\u7684\u63a5\u53e3，\u5b83\u81ea\u5e26\u4e86USB\u8f6cTTL\u529f\u80fd\u3002<\/li>\n<\/ul>\n<\/p>\n
\u6ce8\u610f\u7aef\u53e3\u7684\u9009\u62e9：<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u5f53\u4f7f\u7528\u7684\u5f00\u53d1\u677f，\u5df2\u5e26USB\u8f6cTTL\u529f\u80fd，\u5982\u4e0a\u9762\u8fd9\u4e2a\u3002\u5728\u70e7\u5f55\u865a\u62df\u4e32\u53e3\u7684\u7a0b\u5e8f\u540e，\u4e32\u53e3\u52a9\u624b\u4f1a\u6709\u81f3\u5c11\u4e24\u4e2a\u7aef\u53e3\u53f7：\u677f\u5b50\u81ea\u5e26\u7684USB\u8f6cTTL（\u53f3\u4fa7）\u3001\u7a0b\u5e8f\u5b9e\u73b0\u7684\u865a\u62df\u4e32\u53e3（\u5de6\u4fa7），\u6ce8\u610f\u4e0d\u8981\u9009\u62e9\u9519\u4e86\u3002<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u5982\u679c\u4e0d\u77e5\u9053\u54ea\u6839\u7ebf\u5bf9\u5e94\u54ea\u4e2a\u7aef\u53e3：\u5728\u70e7\u5f55\u540e，\u62d4\u4e00\u4e0bUSB\u7ebf，\u770b\u770b\u54ea\u4e2a\u7aef\u53e3\u6d88\u5931\u4e86\u3002<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u53e6\u4e00\u65b9\u6cd5，\u6709\u4e9b\u4e32\u53e3\u52a9\u624b\u7684\u7aef\u53e3\u5217\u8868，\u80fd\u663e\u793a\u8bbe\u5907\u4fe1\u606f，\u627e\u5230\u5e26\u201cSTM…\u201d\u63cf\u8ff0\u7684\u90a3\u4e2a\u3002<\/p>\n<\/p>\n
\u73b0\u5728\u80fd\u770b\u5230，\u4e32\u53e3\u52a9\u624b\u80fd\u63a5\u6536\u5230\u7a0b\u5e8f\u6301\u7eed\u53d1\u51fa\u7684\u6570\u636e\u4e86！<\/p>\n
\u6548\u679c\u5982\u4e0b\u56fe：<\/p>\n
<\/p>\n
\n<\/p>\n\u516d\u3001\u53d1\u9001\u4f18\u5316（\u8fde\u7eed\u53d1\u9001）<\/span><\/h2>\n<\/p>\n
\u4e0a\u8282\u7684\u53d1\u9001，\u5b9e\u73b0\u65f6，\u53ea\u80fd\u6536\u5230\u7b2c\u4e00\u884c"Hello"，\u800c\u7b2c\u4e8c\u884c\u53d1\u51fa\u7684\u6570\u636e:"\u501f\u70b9\u94b1 "\u5374\u6ca1\u6536\u5230！！<\/p>\n
\u4e0d\u662f\u6ca1\u6536\u5230\u3002\u5176\u5b9e，\u4eceSTM32\u7a0b\u5e8f\u7684\u89d2\u5ea6，\u662f\u6ca1\u6709\u53d1\u51fa\u6570\u636e！<\/p>\n
\u5148\u8bf4\u8bf4，USB\u865a\u62df\u4e32\u53e3\u901a\u4fe1\u7684\u51e0\u4e2a\u91cd\u70b9 (\u7279\u6307：USB2.0\u3001\u5168\u901f\u6a21\u5f0f\u3001\u4e2d\u65ad\u4f20\u8f93）：<\/p>\n
- \n
- USB\u662f\u8f6e\u8be2\u673a\u5236，\u4e3b\u673a\u5bf9\u8bbe\u5907\u4e0d\u65ad\u8f6e\u8be2，\u95f4\u9694\u6700\u5c0f1ms；\u4e0d\u662f\u56fa\u5b9a\u76841ms,\u00a0 \u662f\u6700\u5c0f\u95f4\u9694\u65f6\u95f4;<\/li>\n
- USB\u7684\u6570\u636e，\u662f\u6309\u5305\u4f20\u8f93\u7684;\u00a0<\/li>\n
- \u6bcf\u4e2a\u8bbe\u5907，\u6bcf1ms，\u6700\u591a\u4f20\u8f931\u5305\u6570\u636e;<\/li>\n
- \u6bcf\u5305\u6700\u591a64\u5b57\u8282（\u6709\u6548\u8d1f\u8f7d）;<\/li>\n<\/ul>\n
\u518d\u8bf4\u8bf4，CDC_Transmit_FS ( )\u00a0\u51fd\u6570：<\/p>\n
- \n
- \u5b83\u7684\u7b2c2\u4e2a\u53c2\u6570，"\u5b57\u8282\u6570"，\u8303\u56f4：0~2048;\u00a0\u8fd9\u4e2a2048\u53ef\u4ee5\u5728CubeMX\u91cc\u8fdb\u884c\u8bbe\u7f6e\u5927\u5c0f;\u00a0<\/li>\n
- \u5b57\u8282\u6570 <= 64，\u7b971\u5305\u3002\u5982：\u53d13\u4e2a\u5b57\u8282，\u4e5f\u7b971\u5305\u3002<\/li>\n
- \u5b57\u8282\u6570 == 0，\u4e5f\u7b971\u5305\u3002\u4fd7\u79f0：\u7a7a\u5305; \u5982\u679c\u4e0a\u4e00\u5e27\u521a\u597d\u53d1\u900164\u5b57\u8282，\u518d\u53d1\u4e00\u4e2a\u7a7a\u5305\u4f5c\u4e3a\u7ed3\u675f\u5305;<\/li>\n
- \u5b57\u8282\u6570 >\u00a064，\u00a0CDC_Transmit_FS ( )\u00a0\u80cc\u540e\u6709\u7f13\u5b58，\u5b83\u81ea\u52a8\u5206\u5305，1ms\u5de6\u53f3\u53d11\u5305，\u76f4\u81f3\u53d1\u5b8c;<\/li>\n
- \u5982\u679c\u4e0a\u4e00\u5305\u8fd8\u6ca1\u53d1\u5b8c，\u518d\u6b21\u8c03\u7528CDC_Transmit_FS ( ) ，\u5c06\u653e\u5f03\u672c\u6b21\u8c03\u7528\u3002<\/li>\n<\/ul>\n
\u4e0a\u9762while\u5faa\u73af\u4e2d，\u8fde\u7eed\u3001\u4e24\u6b21\u8c03\u7528CDC_Transmit_FS ( ) .<\/p>\n
- \n
- \u7b2c1\u6b21\u8c03\u7528，\u5c06\u6b63\u5e38\u53d1\u51fa\u4e00\u5305\u6570\u636e;<\/li>\n
- \u7b2c2\u6b21\u8c03\u7528，\u518d\u53d1\u9001\u4e00\u5305\u3002\u4f46\u662f，\u4e24\u5305\u6ca1\u6709\u95f4\u96941ms\u4ee5\u4e0a，\u5bfc\u81f4\u4e86\u7b2c2\u6b21\u7684\u53d1\u9001，\u88ab\u820d\u5f03\u4e86\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u5148\u6253\u5f00\u00a0CDC_Transmit_FS ( )\u00a0\u51fd\u6570，\u770b\u770b\u51fd\u6570\u539f\u578b\u3002<\/p>\n
\u5728\u4ee3\u7801\u4e2d，\u53f3\u51fbCDC_Transmit_FS ( ) ，\u5f39\u51fa\u83dc\u5355，\u9009\u62e9Go To Definition…，\u5c06\u8df3\u8f6c\u5230\u51fd\u6570\u4f4d\u7f6e;<\/p>\n
\u6216\u8005，\u5728\u5de6\u4fa7\u6587\u4ef6\u6811\u4e2d，\u53cc\u51fb\u6253\u5f00usbd_cdc_if.c\u00a0\u6587\u4ef6 ，CDC_Transmit_FS ( ) \u4f4d\u4e8e\u5927\u7ea6280\u884c\u00a0;<\/p>\n
\u7279\u522b\u6ce8\u610f：<\/span><\/p>\n
usbd_cdc_if.c\u00a0\u662f\u5e94\u7528\u5c42\u6587\u4ef6，\u6211\u4eec\u5bf9\u6536\u3001\u53d1\u6709\u5565\u7279\u6b8a\u9700\u6c42，\u901a\u8fc7\u4fee\u6539\u6587\u4ef6\u91cc\u7684\u53d1\u9001\u51fd\u6570\u3001\u63a5\u6536\u56de\u8c03\u51fd\u6570\u3001\u7c7b\u8bf7\u6c42\u51fd\u6570，\u57fa\u672c\u90fd\u80fd\u5b9e\u73b0\u3002<\/p>\n
\u4e0b\u56fe，\u662f\u00a0CDC_Transmit_FS ( )\u00a0\u51fd\u6570\u622a\u56fe\u3002<\/p>\n
\u7ea2\u6846\u7684\u4ee3\u7801\u4f5c\u7528\u662f：\u5f53\u8bbe\u5907\u5fd9\u65f6，\u76f4\u63a5\u653e\u5f03\u53d1\u9001,：<\/p>\n
<\/p>\n<\/p>\n\u4fee\u6539：<\/p>\n
- \n
- \u6ce8\u91ca\u6389\u521a\u624d if\u00a0\u4f53\u76843\u884c\u4ee3\u7801;<\/li>\n
- \u589e\u52a0\u7b49\u5f85\u53d1\u9001\u7a7a\u95f2\u3001\u5224\u65ad\u8d85\u65f6，\u5982\u4e0b6\u884c;<\/li>\n
- \u6574\u4e2aCDC_Transmit_FS ( ) \u51fd\u6570，\u5982\u4e0b:（\u53ef\u590d\u5236）<\/li>\n<\/ul>\n
uint8_t CDC_Transmit_FS(uint8_t *Buf, uint16_t Len)
\n{
\n uint8_t result = USBD_OK;
\n \/* USER CODE BEGIN 7 *\/<\/p>\nUSBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef *)hUsbDeviceFS.pClassData; \/\/ \u83b7\u5f97\u8bbe\u5907\u7684\u72b6\u6001\u4fe1\u606f\u7ed3\u6784\u4f53
\n \/\/ if (hcdc->TxState != 0){
\n \/\/ return USBD_BUSY;
\n \/\/ }
\n uint32_t timeStart = HAL_GetTick();
\n while (hcdc->TxState)
\n {
\n if (HAL_GetTick() – timeStart > 20)
\n return USBD_BUSY;
\n }<\/p>\nUSBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
\n result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);<\/p>\n\/* USER CODE END 7 *\/
\n return result;
\n} <\/p>\n\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50：
<\/p>\n<\/p>\n\u518d\u6b21\u7f16\u8bd1\u3001\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u4e32\u53e3\u52a9\u624b，\u73b0\u5728\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n\u8fde\u7eed\u53d1\u9001\u5df2\u5b9e\u73b0\u4e86\u3002<\/p>\n
\u4e0a\u8ff0\u65b9\u6cd5\u80fd\u591f\u89e3\u51b3\u8fde\u7eed\u53d1\u9001\u5931\u8d25\u7684\u95ee\u9898\u3002<\/p>\n
\u4f46\u5b83\u5b58\u5728\u4e00\u4e2a\u663e\u8457\u7f3a\u70b9：\u7531\u4e8e\u5176\u963b\u585e\u6027\u8d28，\u9891\u5bc6\u8fde\u7eed\u53d1\u9001\u65f6，\u5c06\u5bfc\u81f4\u8fd0\u884c\u201c\u6b7b\u7b49\u201d，\u5f71\u54cd\u7a0b\u5e8f\u6548\u7387\u3002<\/p>\n
（\u5bf9\u4e8e\u5927\u90e8\u5206\u573a\u666f，\u4e0a\u8ff0\u65b9\u6cd5\u5df2\u8db3\u591f\u3002\u672c\u8282\u5185\u5bb9，\u53ea\u662f\u4e3a\u4f60\u9884\u57cb\u4e00\u79cd\u5907\u7528\u601d\u8def，\u65e0\u9700\u6b7b\u78d5\u3002）<\/p>\n
\u5982\u679c\u9879\u76ee\u5bf9\u5b9e\u65f6\u6027\u6709\u8f83\u9ad8\u7684\u8981\u6c42，\u53ef\u4ee5\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528\u53d1\u9001\u6570\u636e\u51fd\u6570 CDC_Transmit_FS() \u548c\u53d1\u9001\u5b8c\u6210\u56de\u8c03\u51fd\u6570 CDC_TransmitCplt_FS() \u6765\u63d0\u9ad8\u4f20\u8f93\u6548\u7387\u3002CDC_TransmitCplt_FS() \u4f1a\u5728 CDC_Transmit_FS() \u51fd\u6570\u53d1\u9001\u6570\u636e\u5b8c\u6bd5\u540e\u81ea\u52a8\u88ab\u8c03\u7528\u3002<\/p>\n
\u6839\u636e\u8fd9\u4e24\u4e2a\u51fd\u6570\u7684\u7279\u70b9，\u53ef\u4ee5\u8bbe\u8ba1\u4e00\u5957\u9ad8\u6548\u7684\u53d1\u9001\u7f13\u5b58\u673a\u5236\u3002\u4f8b\u5982，\u53ef\u4ee5\u7ef4\u62a4\u4e00\u4e2a\u53d1\u9001\u961f\u5217，\u5f53 CDC_Transmit_FS() \u5b8c\u6210\u53d1\u9001\u540e，CDC_TransmitCplt_FS() \u88ab\u8c03\u7528\u65f6，\u4ece\u961f\u5217\u4e2d\u53d6\u51fa\u4e0b\u4e00\u4e2a\u6570\u636e\u9879\u8fdb\u884c\u53d1\u9001，\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u6570\u636e\u4f20\u8f93\u7684\u8fde\u7eed\u6027\u3002<\/p>\n
\u8fd9\u4e2a\u53d1\u9001\u5b8c\u6210\u56de\u8c03\u51fd\u6570 CDC_TransmitCplt_FS() ，\u4f4d\u4e8e\u53d1\u9001\u51fd\u6570 CDC_Transmit_FS() \u7684\u6b63\u4e0b\u65b9\u3002<\/p>\n
\u81f3\u4e8e\u5177\u4f53\u7684\u4ee3\u7801\u5b9e\u73b0，\u4e0d\u540c\u9879\u76ee\u9700\u6c42\u5404\u5f02，\u65e0\u6cd5\u63d0\u4f9b\u4e00\u4e2a\u901a\u7528\u7684\u89e3\u51b3\u65b9\u6848\u3002\u56e0\u6b64，\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u9879\u76ee\u9700\u6c42，\u8fdb\u884c\u9488\u5bf9\u6027\u7684\u8bbe\u8ba1\u548c\u4f18\u5316，\u4e0d\u80fd\u4e00\u836f\u6cbb\u767e\u75c5\u3002<\/p>\n
\n<\/h2>\n
<\/h2>\n
\u4e03\u3001\u63a5\u6536<\/span><\/h2>\n<\/p>\n
1\u3001\u63a5\u6536\u65b9\u5f0f\u7684\u7b80\u8ff0<\/p>\n
\u5f53USB CDC\u63a5\u6536\u5230\u6765\u81eaUSB\u4e3b\u673a\u7684\u6570\u636e\u65f6，\u89e6\u53d1\u4e2d\u65ad\u8fdb\u5165\u4e2d\u65ad\u51fd\u6570，\u7ee7\u800c\u81ea\u52a8\u8c03\u7528\u63a5\u6536\u56de\u8c03\u51fd\u6570:<\/p>\n
int8_t\u00a0 CDC_Receive_FS\u00a0(uint8_t* Buf, uint32_t *Len);\u00a0\u00a0 <\/p>\n
- \n
- uint8_t* Buf:\u00a0 \u00a0\u6307\u5411\u63a5\u6536\u7f13\u51b2\u533a\u7684\u6307\u9488，\u5373\u6570\u636e\u7f13\u5b58\u7684\u5730\u5740\u3002<\/li>\n
- uint16_t* Len: \u5f53\u524d\u6570\u636e\u5305\u7684\u5b57\u8282\u6570\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u5c31\u5728\u8fd9\u4e2a\u56de\u8c03\u51fd\u6570\u91cc，\u5904\u7406\u63a5\u6536\u5230\u7684\u6570\u636e！<\/p>\n
\u5b83\u5728\u00a0usbd_cdc_if.c \u6587\u4ef6，\u4f4d\u4e8e\u53d1\u9001\u51fd\u6570\u7684\u6b63\u4e0a\u65b9；<\/p>\n
\u51fd\u6570\u5185\u90e8，\u751f\u6210\u7684\u4ee3\u7801\u91cc，\u53ea\u67092\u884c\u6267\u884c\u4ee3\u7801，\u6307\u5b9a\u4e0b\u6b21\u63a5\u6536\u7684\u5b58\u653e\u4f4d\u7f6e;\u00a0 \u5982\u4e0b\u56fe\u6240\u793a：<\/p>\n
\u800c\u672c\u6b21\u6240\u63a5\u6536\u5230\u7684\u6570\u636e，\u8be5\u5982\u4f55\u5904\u7406，\u9700\u8981\u6211\u4eec\u81ea\u884c\u6dfb\u52a0\u4ee3\u7801\u3002<\/p>\n
<\/p>\n<\/p>\n\u63a5\u6536\u673a\u5236\u6ce8\u610f\u4e8b\u9879：<\/p>\n
- \n
- \u6bcf\u5f53\u63a5\u6536\u5230\u4e00\u5305\u6570\u636e，\u786c\u4ef6\u81ea\u52a8\u89e6\u53d1\u4e2d\u65ad\u51fd\u6570，\u00a0\u7ee7\u800c\u8c03\u7528\u6b64\u63a5\u6536\u56de\u8c03\u51fd\u6570，\u65e0\u9700\u4eba\u5de5\u8c03\u7528\u3002<\/li>\n
- \u4e0e\u53d1\u9001\u673a\u5236\u76f8\u4f3c，\u6bcf\u95f4\u96941ms，\u6700\u591a\u63a5\u65361\u5305\u6570\u636e，\u6bcf\u5305\u6700\u592764\u5b57\u8282\u3002\u3002<\/li>\n
- \u5982\u679c\u9700\u8981\u63a5\u6536\u8d85\u8fc764\u5b57\u8282\u7684\u6570\u636e\u5e27，\u6ce8\u610f，\u6307\u4e0a\u4f4d\u673a\u53d1\u9001\u76841\u4e2a\u5b8c\u6574\u6570\u636e\u5e27，\u800c\u975eUSB\u7684\u5355\u5305\u6570\u636e，\u5982，\u4e0a\u4f4d\u673a\u53d1\u6765\u4e00\u5f20\u56fe\u7247\u6570\u636e，8350\u4e2a\u5b57\u8282，\u5219\u9700\u8981\u5728\u6b64\u56de\u8c03\u51fd\u6570\u4e2d\u6dfb\u52a0\u989d\u5916\u7684\u4ee3\u7801\u6765\u5224\u65ad\u5e27\u6570\u636e\u4f20\u8f93\u5b8c\u6574\u7ed3\u675f \u3001\u624b\u52a8\u5c06\u591a\u4e2a\u6570\u636e\u5305\u62fc\u63a5\u6210\u5b8c\u6574\u7684\u6570\u636e\u5e27\u3002<\/li>\n
- \u63a5\u6536\u5230\u6570\u636e\u65f6，\u7f13\u5b58\u4e0d\u4f1a\u63d0\u524d\u81ea\u52a8\u6e05\u96f6，\u65b0\u6570\u636e\u4eceBuf\u7684\u8d77\u59cb\u4f4d\u7f6e\u5f00\u59cb，\u8986\u76d6\u5b58\u653e\u3002<\/li>\n
- \u7531\u4e8e\u8be5\u56de\u8c03\u51fd\u6570\u662f\u88ab\u4e2d\u65ad\u51fd\u6570\u8c03\u7528\u7684，\u56e0\u6b64\u5efa\u8bae\u51fd\u6570\u5185\u90e8\u7684\u5904\u7406\u5c3d\u53ef\u80fd\u5730\u7b80\u77ed，\u4ee5\u907f\u514d\u5f71\u54cd\u7cfb\u7edf\u7684\u5b9e\u65f6\u6027（\u4e2d\u65ad\u51fd\u6570\u8fd0\u884c\u671f\u95f4，\u4f1a\u4ee4\u7a0b\u5e8f\u6301\u7eed\u6302\u8d77）\u3002<\/li>\n<\/ul>\n
2\u3001\u63a5\u6536\u793a\u8303<\/p>\n
\u672c\u8282\u5c06\u793a\u8303：<\/p>\n
- \n
- \u901a\u8fc7\u4e32\u53e3\u52a9\u624b，\u53d1\u9001\u5b57\u7b26\u4e32\u00a0<\/li>\n
- STM32（\u8bbe\u5907\u7aef）\u6536\u5230\u6570\u636e\u540e，\u628a\u6536\u5230\u7684\u5b57\u8282\u6570\u3001\u5b57\u7b26\u4e32，\u53d1\u56de\u4e32\u53e3\u52a9\u624b\u663e\u793a（\u4e3b\u673a\u7aef）<\/li>\n<\/ul>\n
\u5728\u51fd\u6570\u5185\u7684\u6ce8\u91ca\u884c\u00a0 \/* USER CODE BEGIN *\/\u00a0 \u4e0b\u65b9，\u6dfb\u52a04\u884c\u81ea\u5b9a\u4e49\u4ee3\u7801（\u53ef\u590d\u5236）\u3002<\/p>\n
char myStr[64] = {0}; \/\/ \u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4，\u7528\u4e8e\u5b58\u653e\u8981\u8f93\u51fa\u7684\u5b57\u7b26\u4e32
\n sprintf(myStr, "\\\\r\\\\r\u6536\u5230 %d \u4e2a\u5b57\u8282；\\\\r\u5185\u5bb9\u662f：%s\\\\r\\\\r", *Len, (char *)Buf); \/\/ \u683c\u5f0f\u5316\u5b57\u7b26\u4e32
\n CDC_Transmit_FS((uint8_t *)myStr, strlen(myStr)); \/\/ \u53d1\u9001
\n memset(Buf, 0, 64); \/\/ \u5904\u7406\u5b8c\u6570\u636e，\u6e050\u63a5\u6536\u7f13\u5b58;<\/p>\n\u6ce8\u610f：<\/p>\n
- \n
- \u7528char\u00a0\u58f0\u660emyStr[ ],\u00a0\u662f\u56e0\u4e3a\u6b64\u5904\u60f3\u628a\u5b83\u4f5c\u4e3a\u4e00\u6bb5\u5b57\u7b26\u4e32\u7a7a\u95f4;<\/li>\n
- sprintf\u662fC\u8bed\u8a00\u6807\u51c6\u8f93\u5165\u8f93\u51fa\u5e93\u7684\u51fd\u6570，\u5982\u679c\u62a5\u9519\u6ca1\u6709\u8fd9\u4e2a\u51fd\u6570，\u5c31：#include <stdio.h><\/li>\n
- \u83b7\u53d6\u5b57\u8282\u6570，\u662f*Len，\u800c\u4e0d\u662fLen;\u00a0 \u56e0\u4e3a\u5b83\u5728\u51fd\u6570\u53c2\u6570\u91cc\u7684\u58f0\u660e，\u662f\u4e00\u4e2a\u6307\u9488;<\/li>\n
- \u4e3a\u4e86\u683c\u5f0f\u5316\u6210\u5b57\u7b26\u4e32，Buf\u7528\u4e86(char*)\u8fdb\u884c\u5f3a\u5236\u8f6c\u6362\u6210\u5b57\u7b26\u7c7b\u578b;\u00a0<\/li>\n
- CDC_Transmit_FS( )\u91cc，\u7528\u4e86strlen\u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u5b57\u8282\u6570，\u5b83\u53ea\u5bf9\u5b57\u7b26\u4e32\u6709\u6548，\u5bf9\u5176\u5b83\u6570\u636e\u7c7b\u578b\u65e0\u6548;\u00a0 \u5982\u679c\u62a5\u9519\u6ca1\u6709\u8fd9\u4e2a\u51fd\u6570，\u5c31：#include\u00a0 <string.h><\/li>\n
- \u5982\u679c\u4f20\u8f93\u7684\u662f16\u8fdb\u5236\u6570，\u7528uint8_t\u00a0\u58f0\u660e\u4e0a\u9762\u6570\u7ec4，\u7136\u540e\u4fee\u6539sprintf\u7684\u683c\u5f0f\u5316\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n
\u6dfb\u52a0\u5b8c\u6210\u540e，\u6587\u4ef6\u662f\u8fd9\u6837\u5b50\u7684：<\/p>\n
<\/p>\n<\/p>\n\u518d\u6b21\u7f16\u8bd1\u3001\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u4e32\u53e3\u52a9\u624b，\u6253\u5f00\u5bf9\u5e94\u7684\u7aef\u53e3\u53f7（\u6ce2\u7279\u7387\u7b49\u53c2\u6570\u4e0d\u7528\u4fee\u6539），<\/p>\n
\u5728\u53d1\u9001\u533a，\u4ee5ASCII\u65b9\u5f0f，\u53d1\u9001\u5b57\u7b26\u4e32（\u56e0\u4e3a\u6dfb\u52a0\u7684\u4ee3\u7801\u91cc\u7528%s\u683c\u5f0f\u5316，\u5904\u7406\u7684\u662f\u5b57\u7b26\u4e32)，<\/p>\n
\u7136\u540e，\u4e32\u53e3\u52a9\u624b\u7684\u63a5\u6536\u533a，\u9a6c\u4e0a\u80fd\u63a5\u6536\u5230\u521a\u624d\u53d1\u51fa\u7684\u6570\u636e！<\/p>\n
\u81f3\u6b64，\u5df2\u5b9e\u73b0\u63a5\u6536\u7684\u5904\u7406\u3002<\/p>\n
<\/p>\n
\n<\/p>\n\u516b\u3001\u63a5\u6536\u4f18\u5316（\u5728\u5916\u90e8\u5904\u7406\u6570\u636e）<\/span><\/h2>\n<\/p>\n
\u4e0a\u9762，\u6211\u4eec\u5df2\u5b9e\u73b0：\u83b7\u53d6\u3001\u4f7f\u7528\u63a5\u6536\u5230\u7684\u6570\u636e\u3002<\/p>\n
\u5728\u63a5\u6536\u56de\u8c03\u51fd\u6570\u4e2d，\u76f4\u63a5\u64cd\u4f5c\u6570\u636e\u7684\u53d1\u9001，\u901a\u5e38\u662f\u5b89\u5168\u7684，\u56e0\u4e3a\u8fd9\u79cd\u64cd\u4f5c\u8017\u65f6\u975e\u5e38\u77ed，\u6700\u591a\u7b49\u5f851\u6b21\u4e3b\u673a\u8f6e\u8be2\u5468\u671f（1ms）\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b，\u4e0d\u4f1a\u5bf9\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u6570\u636e\u63a5\u6536\u9020\u6210\u663e\u8457\u5f71\u54cd\u3002<\/p>\n
\u4f46\u662f，\u5982\u679c\u5728\u63a5\u6536\u56de\u8c03\u51fd\u6570\u4e2d\u6267\u884c\u8017\u65f6\u8f83\u957f\u7684\u64cd\u4f5c，\u5982\u663e\u793a\u5230LCD\u6216\u5b58\u50a8\u5230Flash\u7b49，\u8fd9\u4e9b\u64cd\u4f5c\u53ef\u80fd\u9700\u8981\u6570\u6beb\u79d2\u5230\u6570\u5341\u6beb\u79d2\u624d\u80fd\u5b8c\u6210\u3002\u8017\u65f6\u8f83\u957f\u7684\u64cd\u4f5c，\u53ef\u80fd\u4f1a\u5bfc\u81f4\u63a5\u6536\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u6f0f\u5305\u73b0\u8c61\u3002<\/p>\n
\u56e0\u4e3a\u63a5\u6536\u56de\u8c03\u51fd\u6570\u662f\u7531USB\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u8c03\u7528\u7684，\u5c5e\u4e8e\u4e2d\u65ad\u5904\u7406\u7684\u4e00\u90e8\u5206，\u5728\u56de\u8c03\u51fd\u6570\u6267\u884c\u671f\u95f4，\u4e3b\u7a0b\u5e8f\u8fd8\u5904\u4e8e\u4e2d\u65ad\u6302\u8d77\u72b6\u6001，\u5176\u4ed6\u4ee3\u7801\u548c\u4e2d\u65ad\u4e5f\u4f1a\u88ab\u6682\u505c\u6267\u884c，\u5f62\u8c61\u5730\u63cf\u8ff0：\u201c\u5361\u6b7b\u201d\u3002<\/p>\n
\u5982\u679c\u4e2d\u65ad\u670d\u52a1\u7a0b\u5e8f\u7684\u6267\u884c\u64cd\u4f5c\u8f83\u8017\u65f6，\u4f1a\u5bfc\u81f4\u4e0b\u4e00\u5305\u6570\u636e\u65e0\u6cd5\u53ca\u65f6\u8fdb\u5165\u4e2d\u65ad，\u4ece\u800c\u9020\u6210\u6570\u636e\u4e22\u5931\u3002<\/p>\n
\u4e3e\u4f8b\u8bf4\u660e：<\/p>\n
- \n
- A (\u7535\u8111USB\u4e3b\u673a)\u6bcf\u96941ms\u6254\u51fa1\u679a\u9e21\u86cb，B(STM32\u4e2d\u65ad\u670d\u52a1\u51fd\u6570）\u8d1f\u8d23\u63a5\u9e21\u86cb\u3002<\/li>\n
- \u5f53B\u63a5\u9e21\u86cb\u5904\u7406\u5f97\u6bd4A\u5feb，\u5373\u6bd4A\u6254\u51fa\u7684\u95f4\u9694\u66f4\u77ed，\u59820.5ms，\u90a3，\u6ca1\u95ee\u9898\u3002<\/li>\n
- \u4f46\u662f，\u5f53B\u63a5\u9e21\u86cb\u7684\u5904\u7406\u65f6\u95f4\u8f83\u957f，\u5982，\u63a5\u4e86\u9e21\u86cb\u8fd8\u8981\u5199\u4e0a\u4ef7\u683c，\u518d\u653e\u7f6e\u5230\u8d27\u67b6，\u517120ms，\u00a0\u90a3\u80af\u5b9a\u5c31\u63a5\u4e0d\u4f4fA\u6301\u7eed\u6254\u8fc7\u6765\u7684\u9e21\u86cb\u4e86，\u6bcf\u63a51\u4e2a，\u5c31\u4f1a\u4e22\u5931\u540e\u9762\u768419\u4e2a，\u518d\u63a51\u4e2a，\u518d\u4e22\u593119\u4e2a…….;\u00a0\u6ce8\u610f，A\u662f\u4e0d\u7ba1B\u662f\u5426\u6570\u636e\u4e22\u5305\u7684，\u5b83\u53ea\u8d1f\u8d23\u6bcf1ms\u6254(\u53d1\u9001)\u4e00\u6b21\u3002<\/li>\n<\/ul>\n
\u6211\u4eec\u9700\u8981\u91c7\u53d6\u4e00\u79cd\u7b56\u7565，\u4f7f\u5f97\u7a0b\u5e8f\u7684\u4e2d\u65ad\u54cd\u5e94\u3001\u201c\u5361\u6b7b\u201d\u5360\u65f6，\u5c3d\u53ef\u80fd\u5730\u77ed：<\/p>\n
- \n
- \u63a5\u6536\u6570\u636e：\u5728\u4e2d\u65ad\u56de\u8c03\u51fd\u6570\u4e2d，\u6211\u4eec\u4ec5\u6267\u884c\u5fc5\u8981\u7684\u6570\u636e\u590d\u5236\u64cd\u4f5c，\u5373\u628a\u63a5\u6536\u5230\u7684\u6570\u636e\u8fc5\u901f\u590d\u5236\u5230\u5916\u90e8\u7f13\u5b58\u4e2d\u3002\u8fd9\u4e00\u64cd\u4f5c\u7684\u8017\u65f6\u901a\u5e38\u5728us\u7ea7\u522b;<\/li>\n
- \u5904\u7406\u6570\u636e：\u5728\u4e3b\u7a0b\u5e8f\u7684while\u5faa\u73af\u4e2d，\u6211\u4eec\u518d\u5bf9\u6570\u636e\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u5904\u7406\u3002\u7531\u4e8e\u8fd9\u4e00\u5904\u7406\u8fc7\u7a0b\u4e0d\u5360\u7528\u4e2d\u65ad\u8d44\u6e90，\u56e0\u6b64\u4e0d\u4f1a\u5f71\u54cd\u7a0b\u5e8f\u5bf9\u65b0\u6570\u636e\u7684\u63a5\u6536;<\/li>\n<\/ul>\n
\u8fd9\u79cd\u7b56\u7565\u901a\u8fc7\u5206\u79bb\u6570\u636e\u63a5\u6536\u548c\u6570\u636e\u5904\u7406\u4e24\u4e2a\u6b65\u9aa4，\u786e\u4fdd\u4e86\u7a0b\u5e8f\u80fd\u591f\u5feb\u901f\u54cd\u5e94\u8fde\u7eed\u7684\u6570\u636e\u6d41，\u540c\u65f6\u907f\u514d\u4e86\u56e0\u5904\u7406\u65f6\u95f4\u8fc7\u957f\u800c\u5bfc\u81f4\u7684\u6570\u636e\u4e22\u5931\u3002<\/p>\n<\/p>\n
\u64cd\u4f5c\u51714\u4e2a\u6b65\u9aa4，\u5177\u4f53\u5982\u4e0b：<\/p>\n
1\u3001\u589e\u52a0\u5168\u5c40\u53d8\u91cf<\/p>\n
\u5728usbd_cdc_if.c\u6587\u4ef6\u5927\u7ea697\u884c，\u914d\u5bf9\u7684\u6ce8\u91ca\u5185，\u5b9a\u4e49\u4e24\u4e2a\u53d8\u91cf：<\/p>\n
\/* USER CODE BEGIN PRIVATE_VARIABLES *\/
\nuint8_t myUsbRxData[64] = { 0 }; \/\/ \u63a5\u6536\u5230\u7684\u6570\u636e
\nuint16_t myUsbRxNum = 0; \/\/ \u63a5\u6536\u5230\u7684\u5b57\u8282\u6570<\/p>\n\/* USER CODE END PRIVATE_VARIABLES *\/ <\/p>\n
\u73b0\u5728，\u5b83\u4fe9\u53ea\u662f\u672c\u5730\u53d8\u91cf，\u7b49\u4f1a\u8981\u5728main\u4e2d\u7528extern\u518d\u58f0\u660e\u4e00\u6b21，\u624d\u80fd\u88ab\u5916\u90e8\u8c03\u7528\u3002<\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n<\/p>\n2\u3001\u4fee\u6539\u63a5\u6536\u56de\u8c03\u51fd\u6570<\/p>\n
\u5728CDC_Receive_FS()\u00a0\u91cc，\u5220\u9664\u6211\u4eec\u4e0a\u8282\u589e\u52a0\u7684\u6d4b\u8bd5\u4ee3\u7801;<\/p>\n
\u628aBuf\u548c*Len\u7684\u6570\u636e，\u590d\u5236\u5230\u6211\u4eec\u521a\u624d\u7684\u4e24\u4e2a\u53d8\u91cf\u91cc\u3002\u51fd\u6570\u4fee\u6539\u6210：<\/p>\n
static int8_t CDC_Receive_FS(uint8_t *Buf, uint32_t *Len)
\n{
\n \/* USER CODE BEGIN 6 *\/
\n \/\/ \u628aBuf\u91cc\u9762\u7684\u6570\u636e，\u590d\u5236\u5230\u5916\u90e8\u7f13\u5b58
\n memset(myUsbRxData, 0, 64); \/\/ \u6e050\u7f13\u5b58\u533a
\n memcpy(myUsbRxData, Buf, *Len); \/\/ \u628a\u63a5\u6536\u5230\u7684\u6570\u636e，\u590d\u5236\u5230\u81ea\u5df1\u7684\u7f13\u5b58\u533a\u4e2d
\n myUsbRxNum = *Len; \/\/ \u590d\u5236\u5b57\u8282\u6570
\n memset(Buf, 0, 64); \/\/ \u5904\u7406\u5b8c\u6570\u636e，\u6e050\u63a5\u6536\u7f13\u5b58; <\/p>\n\/\/ CubeMX\u751f\u6210\u7684\u4ee3\u7801，\u4fdd\u7559
\n USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]); \/\/ \u8bbe\u7f6e\u4e0b-\u4e2a\u63a5\u6536\u7f13\u51b2\u533a
\n USBD_CDC_ReceivePacket(&hUsbDeviceFS); \/\/ \u542f\u52a8\u4e0b\u4e00\u4e2a\u6570\u636e\u5305\u7684\u63a5\u6536
\n return (USBD_OK);
\n \/* USER CODE END 6 *\/
\n} <\/p>\n\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n\u73b0\u5728，\u6570\u636e\u63a5\u6536\u90e8\u5206，\u5df2\u5904\u7406\u597d\u4e86\u3002<\/p>\n
\u4ee5\u540e\u56de\u8c03\u51fd\u6570\u8fd0\u884c\u65f6，\u53ea\u590d\u5236\u6570\u636e\u81f3\u5916\u90e8\u7f13\u5b58（\u5907\u7528），\u4e2d\u65ad\u65f6\u95f4\u5360\u7528\u6781\u77ed，\u4e0d\u4f1a\u5f71\u54cd\u4e0b\u5305\u63a5\u6536\u3002<\/p>\n<\/p>\n
3\u3001 \u5728\u5916\u90e8\u7528extern\u58f0\u660e\u53d8\u91cf，\u4ee4\u5916\u90e8\u53ef\u8c03\u7528\u6570\u636e<\/p>\n
\u5916\u90e8，\u54ea\u4e2a\u6587\u4ef6\u91cc\u8981\u4f7f\u7528CDC\u63a5\u6536\u7684\u6570\u636e，\u5c31\u5728\u8fd9\u4e2a\u6587\u4ef6\u91cc，\u7528extern\u58f0\u660e\u90a3\u4fe9\u53d8\u91cf\u3002<\/p>\n
\u5982，\u53ef\u4ee5\u5728LCD\u6587\u4ef6，\u4e5f\u53ef\u4ee5\u5728SD\u5361\u7684\u6587\u4ef6\u4e2d，\u90fd\u884c\u3002<\/p>\n
\u5efa\u8bae\u5728main.h\u6587\u4ef6\u4e2d\u58f0\u660e，\u5176\u5b83\u6587\u4ef6\u518d#include "main.h"，\u8fd9\u6837，\u53ef\u4ee5\u4ee4\u53d8\u91cf\u5168\u5c40\u53ef\u7528\u3002<\/p>\n
- \n
- \u6253\u5f00 main.c，\u53f3\u51fb\u7a7a\u767d，\u70b9\u51fb"Toggle\u00a0Header\/Code File"，\u53ef\u4ee5\u8df3\u8f6c\u5230\u5934\u6587\u4ef6：main.h\u00a0\u00a0<\/li>\n<\/ul>\n<\/p>\n<\/p>\n
\u5728main.h\u4e2d，\u5927\u7ea638\u884c，\u627e\u5230\u00a0\u914d\u5bf9\u7684\u6ce8\u91ca\u884c\u00a0\/* USER CODE BEGIN ET *\/<\/p>\n
\u7528 extern\u00a0\u518d\u6b21\u58f0\u660e\u521a\u624d\u4e24\u4e2a\u53d8\u91cf\u3002\u5982\u4e0b（\u53ef\u590d\u5236）：<\/p>\n
\u6ce8\u610f，\u662f\u53ea\u58f0\u660e，\u4e0d\u8981\u8d4b\u503c，\u5426\u5219\u7f16\u8bd1\u9519\u8bef\u3002<\/p>\n
\/* USER CODE BEGIN ET *\/
\nextern uint8_t myUsbRxData[ ] ;
\nextern uint16_t myUsbRxNum ;<\/p>\n\/* USER CODE END ET *\/ <\/p>\n
\u5b8c\u6210\u540e，\u662f\u8fd9\u4e2a\u6837\u5b50\u7684：<\/p>\n
<\/p>\n\u4ee3\u7801\u89c4\u8303：<\/span> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u8fd9\u91cc\u7684\u793a\u8303，\u4f7f\u7528\u5168\u5c40\u53d8\u91cf，\u53ea\u662f\u4e3a\u4e86\u66f4\u6e05\u6670\u5730\u6f14\u793a\u64cd\u4f5c\u601d\u8def\u3002<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u9879\u76ee\u4e2d，\u5c3d\u91cf\u907f\u514d\u4f7f\u7528\u5168\u5c40\u53d8\u91cf；\u4e0d\u540c\u6587\u4ef6\u95f4\u7684\u6570\u636e\u83b7\u53d6，\u53ef\u4ee5\u5c01\u88c5\u6210\u51fd\u6570，\u5982 CDC_GetRxData()\u3001CDC_GetRxNum()，\u8fd4\u56de\u6570\u636e\u5730\u5740\u3001\u63a5\u6536\u7684\u5b57\u8282\u6570\u3002\u00a0\u00a0\u00a0\u00a0<\/p>\n<\/p>\n
4\u3001\u4f7f\u7528\u63a5\u6536\u5230\u6570\u636e<\/p>\n
\u5728main.c\u7684while\u5faa\u73af\u4e2d，\u901a\u8fc7\u5224\u65admyUsbRxNum\u7684\u503c，\u53ea\u8981\u5927\u4e8e0，\u5c31\u8868\u793a\u6536\u5230\u6570\u636e\u4e86<\/p>\n
\u8bb0\u5f97\u6bcf\u6b21\u5904\u7406\u5b8c\u6570\u636e，\u628amyUsbRxNum\u7f6e0，\u4ee5\u4fbf\u4e8e\u4e0b\u4e00\u8f6e\u7684\u5224\u65ad\u3002<\/p>\n
<\/p>\n\u518d\u6b21\u70e7\u5f55，\u70e7\u5f55\u7a0b\u5e8f\u3002<\/p>\n
\u6253\u5f00\u4e32\u53e3\u52a9\u624b，\u53d1\u9001\u6d4b\u8bd5\u6587\u672c，\u53ef\u4ee5\u53d1\u73b0，\u80fd\u6210\u529f\u6536\u5230STM32\u53d1\u8fc7\u6765\u7684\u56de\u4f20\u6570\u636e\u3002<\/p>\n
<\/p>\n<\/p>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5982\u679c，\u5916\u90e8\u5904\u7406\u6570\u636e\u7684\u901f\u5ea6\u8ddf\u4e0d\u4e0a，\u5982，\u5728while\u91cc\u6bcf\u6b21\u6536\u5230\u6570\u636e\u90fd\u8981\u663e\u793a\u5230LCD，LCD\u7684\u901f\u5ea6\u8fdc\u6162\u4e8eUSB\u7684\u4f20\u8f93，\u90a3，\u8fd8\u4e0d\u662f\u53d8\u76f8\u4e22\u4e86\u6570\u636e？！\u662f\u7684，\u4f1a\u6709\u8fd9\u79cd\u60c5\u51b5！<\/p>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u4f46，\u90a3\u5df2\u7ecf\u662f\u7a0b\u5e8f\u903b\u8f91\u548c\u65f6\u95f4\u7247\u673a\u5236\u7684\u95ee\u9898\u4e86，3\u59293\u591c\u4e5f\u55d1\u4e0d\u5b8c！<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u672c\u8282\u53ea\u8ba8\u8bba：\u786e\u4fdd\u6bcf\u4e00\u5305\u6570\u636e，\u90fd\u80fd\u88ab\u6b63\u5e38\u63a5\u6536\u5230\u3002\u5916\u90e8\u80fd\u5426\u53ca\u65f6\u5904\u7406，\u4e0d\u8ff0\u3002<\/p>\n<\/p>\n
\u81f3\u6b64，\u672c\u7bc7\u5b8c\u7ed3\u3002<\/p>\n
\u5982\u6709\u9519\u6f0f，\u671b\u7559\u8a00\u6307\u6b63，\u53ca\u65f6\u66f4\u65b0！！<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb2.4w\u6b21\uff0c\u70b9\u8d5e164\u6b21\uff0c\u6536\u85cf499\u6b21\u3002\u901a\u8fc7CubeMX + Keil\uff0c\u914d\u7f6eSTM32\u4f5c\u4e3aUSB\u8bbe\u5907\u7aef\uff0c\u4e0e\u7535\u8111\u8fdb\u884c\u901a\u4fe1\uff08CDC\uff09\uff1b\u901a\u7528\u5e26USB\u529f\u80fd\u7684 STM32 \u82af\u7247 \uff08\u5982F1\u3001F4\u7b49\uff0c\u7cfb\u7edf\u65f6\u949f\u914d\u7f6e\u4e0d\u540c\uff0c\u4ee3\u7801\u901a\u7528\uff09\u3002_stm32 usb<\/p>\n","protected":false},"author":2,"featured_media":43139,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[4006,4008,217,4010,4009,4007],"topic":[],"class_list":["post-43159","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-hal-stm32-cubemx-","tag-cdc","tag-stm32","tag-stm32f407","tag-usb","tag-4007"],"yoast_head":"\n
STM32 - USB\u865a\u62df\u4e32\u53e3\u901a\u4fe1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/43159.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"STM32 - USB\u865a\u62df\u4e32\u53e3\u901a\u4fe1 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb2.4w\u6b21\uff0c\u70b9\u8d5e164\u6b21\uff0c\u6536\u85cf499\u6b21\u3002\u901a\u8fc7CubeMX + Keil\uff0c\u914d\u7f6eSTM32\u4f5c\u4e3aUSB\u8bbe\u5907\u7aef\uff0c\u4e0e\u7535\u8111\u8fdb\u884c\u901a\u4fe1\uff08CDC\uff09\uff1b\u901a\u7528\u5e26USB\u529f\u80fd\u7684 STM32 \u82af\u7247 \uff08\u5982F1\u3001F4\u7b49\uff0c\u7cfb\u7edf\u65f6\u949f\u914d\u7f6e\u4e0d\u540c\uff0c\u4ee3\u7801\u901a\u7528\uff09\u3002_stm32 usb\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/43159.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-11T00:55:52+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/06\/20250611005546-6848d412b1be7.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/43159.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/43159.html\",\"name\":\"STM32 - 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