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\/><\/p>\n<p>\u8fd9\u4e2aNVIC\u7684\u540d\u5b57\u53eb\u505a\u5d4c\u5957\u4e2d\u65ad\u5411\u91cf\u63a7\u5236\u5668\uff0c\u5728STM32\u4e2d\uff0c\u5b83\u662f\u7528\u6765\u7edf\u4e00\u5206\u914d\u4e2d\u65ad\u4f18\u5148\u7ea7\u548c\u7ba1\u7406\u4e2d\u65ad\u7684\u3002<\/p>\n<p>NVIC\u662f\u4e00\u4e2a\u5185\u6838\u5916\u8bbe\uff0c\u662fCPU\u7684\u5c0f\u52a9\u624b\uff0c\u6211\u4eec\u521a\u624d\u77e5\u9053\uff0cSTM32\u7684\u4e2d\u65ad\u975e\u5e38\u591a\uff0c\u5982\u679c\u628a\u8fd9\u4e9b\u4e2d\u65ad\u5168\u90e8\u63a5\u5230CPU\u4e0a\uff0c\u90a3CPU\u8fd8\u5f97\u5f15\u51fa\u5f88\u591a\u7ebf\u8fdb\u884c\u9002\u914d\uff0c\u8bbe\u8ba1\u4e0a\u5c31\u5f88\u9ebb\u70e6\uff0c\u5e76\u4e14\u5982\u679c\u5f88\u591a\u4e2d\u65ad\u540c\u65f6\u7533\u8bf7\uff0c\u6216\u8005\u4e2d\u65ad\u5f88\u591a\u4ea7\u751f\u4e86\u62e5\u5835\uff0cCPU\u4e5f\u5f88\u96be\u5904\u7406\uff0c\u6bd5\u7adfCPU\u4e3b\u8981\u7528\u6765\u8fd0\u7b97\u7684\uff0c\u4e2d\u65ad\u5206\u914d\u7684\u4efb\u52a1\u5c31\u653e\u5230\u522b\u5230\u5730\u65b9\u5427\uff0c\u6240\u4ee5NVIC\u5c31\u51fa\u73b0\u4e86\uff0cNVIC\u6709\u5f88\u591a\u8f93\u5165\u53e3\uff0c\u4f60\u6709\u591a\u5c11\u4e2d\u65ad\u7ebf\u8def\uff0c\u90fd\u53ef\u4ee5\u63a5\u8fc7\u6765\uff0c\u7ebf\u4e0a\u753b\u4e86\u4e2a\u659c\u6760\uff0c\u4e0a\u9762\u5199\u4e2an\uff0c\u8fd9\u4e2a\u610f\u601d\u662f\u4e00\u4e2a\u5916\u8bbe\u53ef\u80fd\u4f1a\u540c\u65f6\u5360\u7528\u591a\u4e2a\u4e2d\u65ad\u901a\u9053\uff0c\u6240\u4ee5\u8fd9\u91cc\u6709n\u6761\u7ebf\u3002<\/p>\n<p>NVIC\u53ea\u6709\u4e00\u4e2a\u8f93\u51fa\u53e3\uff0cNVIC\u6839\u636e\u6bcf\u4e2a\u4e2d\u65ad\u7684\u4f18\u5148\u7ea7\u5206\u914d\u4e2d\u65ad\u7684\u5148\u540e\u987a\u5e8f\uff0c\u4e4b\u540e\u901a\u8fc7\u53f3\u8fb9\u7684\u8f93\u51fa\u53e3\u544a\u8bc9CPU,\u4f60\u8be5\u5904\u7406\u54ea\u4e2a\u4e2d\u65ad\uff0c\u5bf9\u4e8e\u4e2d\u65ad\u5148\u540e\u987a\u5e8f\u5206\u914d\u7684\u4efb\u52a1\uff0cCPU\u4e0d\u9700\u8981\u77e5\u9053\u3002<\/p>\n<h3>NVIC\u4f18\u5148\u7ea7\u5206\u7ec4<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-386\" src=\"https:\/\/aoofoo.com\/wp-content\/uploads\/2024\/06\/1-78.png\" alt=\"\" width=\"868\" height=\"388\" \/><\/p>\n<p>\u4e3a\u4e86\u5904\u7406\u4e0d\u540c\u5f62\u5f0f\u7684\u4f18\u5148\u7ea7\uff0cSTM32\u7684NVIC\u53ef\u4ee5\u5bf9\u4f18\u5148\u7ea7\u8fdb\u884c\u5206\u7ec4\uff0c\u5206\u4e3a\u62a2\u5360\u4f18\u5148\u7ea7\u548c\u54cd\u5e94\u4f18\u5148\u7ea7\uff0c\u90a3\u8fd9\u4e24\u79cd\u4f18\u5148\u7ea7\u6709\u4ec0\u4e48\u533a\u522b\u5462\uff1f<\/p>\n<p>\u4e3e\u4e2a\u75c5\u4eba\u53eb\u53f7\u7684\u4f8b\u5b50\uff1a<\/p>\n<p>\u5bf9\u4e8e\u7d27\u6025\u7684\u75c5\u4eba\uff0c\u5176\u5b9e\u6709\u4e24\u79cd\u4f18\u5148\u7684\u5f62\u5f0f\uff0c\u4e00\u79cd\u662f\uff0c\u4e0a\u4e00\u4e2a\u75c5\u4eba\u5728\u770b\u75c5\uff0c\u5916\u9762\u6392\u961f\u4e86\u5f88\u591a\u75c5\u4eba\uff0c\u5f53\u4e0a\u4e00\u4e2a\u75c5\u4eba\u770b\u75c5\u770b\u5b8c\u540e\uff0c\u7d27\u6025\u7684\u75c5\u4eba\u5373\u4f7f\u662f\u540e\u6765\u7684\uff0c\u4e5f\u4f1a\u6700\u5148\u8fdb\u53bb\u770b\u75c5\uff0c\u8fd9\u79cd\u76f8\u5f53\u4e8e\u63d2\u961f\u7684\u4f18\u5148\u7ea7\uff0c\u5c31\u53eb\u54cd\u5e94\u4f18\u5148\u7ea7\u3002\u54cd\u5e94\u4f18\u5148\u7ea7\u9ad8\u7684\uff0c\u53ef\u4ee5\u63d2\u961f\u63d0\u524d\u770b\u75c5\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u5982\u679c\u8fd9\u4e2a\u75c5\u4eba\u66f4\u52a0\u7d27\u6025\uff0c\u5e76\u4e14\u6b64\u65f6\u5df2\u7ecf\u6709\u4eba\u5728\u770b\u75c5\u4e86\uff0c\u90a3\u4ed6\u8fd8\u53ef\u4ee5\u4e0d\u7b49\u4e0a\u4e00\u4e2a\u4eba\u770b\u5b8c\uff0c\u76f4\u63a5\u51b2\u5230\u533b\u751f\u7684\u5c4b\u91cc\uff0c\u8ba9\u4e0a\u4e00\u4e2a\u75c5\u4eba\u5148\u9760\u8fb9\u7ad9\uff0c\u5148\u7ed9\u4ed6\u770b\u75c5\uff0c\u7b49\u4ed6\u770b\u5b8c\u4e86\uff0c\u7136\u540e\u4e0a\u4e00\u4e2a\u75c5\u4eba\u518d\u7ee7\u7eed\uff0c\u4e0a\u4e00\u4e2a\u75c5\u4eba\u7ed3\u675f\u4e86\uff0c\u53eb\u53f7\u7cfb\u7edf\u518d\u770b\u6709\u6ca1\u6709\u4eba\u6765\uff0c\u8fd9\u79cd\u5f62\u5f0f\u7684\u4f18\u5148\u5c31\u662f\u6211\u4eec\u4e4b\u524d\u5199\u7684\u4e2d\u65ad\u5d4c\u5957\u3002\u8fd9\u79cd\u51b3\u5b9a\u662f\u4e0d\u662f\u53ef\u4ee5\u4e2d\u65ad\u5d4c\u5957\u7684\u4f18\u5148\u7ea7\uff0c\u5c31\u53eb\u62a2\u5360\u4f18\u5148\u7ea7\u3002\u62a2\u5360\u4f18\u5148\u7ea7\u9ad8\u7684\uff0c\u53ef\u4ee5\u8fdb\u884c\u4e2d\u65ad\u5d4c\u5957\u3002<\/p>\n<p>\u8fd9\u4e9b\u5c31\u662f\u62a2\u5360\u4f18\u5148\u7ea7\u548c\u54cd\u5e94\u4f18\u5148\u7ea7\u7684\u89e3\u91ca\u3002<\/p>\n<p>\u90a3\u6211\u4eec\u521a\u624d\u5199\u4e86\uff0c\u6bcf\u4e2a\u4e2d\u65ad\u670916\u4e2a\u4f18\u5148\u7ea7\uff0c\u4e3a\u4e86\u628a\u8fd9\u4e2a\u4f18\u5148\u7ea7\u518d\u533a\u5206\u4e3a \u62a2\u5360\u4f18\u5148\u7ea7\u548c\u54cd\u5e94\u4f18\u5148\u7ea7\uff0c\u5c31\u9700\u8981\u5bf9\u8fd916\u4e2a\u4f18\u5148\u7ea7\u8fdb\u884c\u5206\u7ec4\u4e86\u3002<\/p>\n<p>NVIC\u7684\u4e2d\u65ad\u4f18\u5148\u7ea7\u7531\u4f18\u5148\u7ea7\u5bc4\u5b58\u5668\u76844\u4f4d\uff080~15\uff09\u51b3\u5b9a\uff0c\u8fd9\u91cc\u76844\u4f4d\u4e8c\u8fdb\u5236\u53ef\u4ee5\u8868\u793a0~15\u7684\u6570\uff0c\u5bf9\u5e9416\u4e2a\u4f18\u5148\u7ea7\uff0c\u8fd9\u4e2a\u4f18\u5148\u7ea7\u7684\u6570\u662f\u503c\u8d8a\u5c0f\uff0c\u4f18\u5148\u7ea7\u8d8a\u9ad8\uff0c0\u5c31\u662f\u6700\u9ad8\u4f18\u5148\u7ea7\u3002\u8fd94\u4f4d\u53ef\u4ee5\u8fdb\u884c\u5207\u5206\uff0c\u5206\u4e3a\u9ad8n\u4f4d\u7684\u62a2\u5360\u4f18\u5148\u7ea7\u548c\u4f4e4-n\u4f4d\u7684\u54cd\u5e94\u4f18\u5148\u7ea7 \u62a2\u5360\u4f18\u5148\u7ea7\u9ad8\u7684\u53ef\u4ee5\u4e2d\u65ad\u5d4c\u5957\uff0c\u54cd\u5e94\u4f18\u5148\u7ea7\u9ad8\u7684\u53ef\u4ee5\u4f18\u5148\u6392\u961f\uff0c\u62a2\u5360\u4f18\u5148\u7ea7\u548c\u54cd\u5e94\u4f18\u5148\u7ea7\u5747\u76f8\u540c\u7684\u6309\u4e2d\u65ad\u53f7\u6392\u961f\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-387\" src=\"https:\/\/aoofoo.com\/wp-content\/uploads\/2024\/06\/1-79.png\" alt=\"\" width=\"643\" height=\"206\" \/><\/p>\n<p>\u5206\u7ec40\u5c31\u662f0\u4f4d\u7684\u62a2\u5360\u7b49\u7ea7\uff0c\u53d6\u503c\u53ea\u80fd\u4e3a0\uff0c4\u4f4d\u7684\u54cd\u5e94\u7b49\u7ea7\uff0c\u53d6\u503c\u53ef\u4ee5\u662f0~15\u3002<\/p>\n<p>\u5206\u7ec41\u5c31\u662f1\u4f4d\u7684\u62a2\u5360\u7b49\u7ea7\uff0c\u53d6\u503c\u662f0~1\uff0c3\u4f4d\u7684\u54cd\u5e94\u7b49\u7ea7\uff0c\u53d6\u503c\u662f0~7\u3002<\/p>\n<p>\u5206\u7ec42\u5c31\u662f2\u4f4d\u7684\u62a2\u5360\u7b49\u7ea7\uff0c\u53d6\u503c\u662f0~3\uff0c2\u4f4d\u7684\u54cd\u5e94\u7b49\u7ea7\uff0c\u53d6\u503c\u662f0~3\u3002<\/p>\n<p>\u5206\u7ec43\u5c31\u662f3\u4f4d\u7684\u62a2\u5360\u7b49\u7ea7\uff0c\u53d6\u503c\u662f0~7\uff0c1\u4f4d\u7684\u54cd\u5e94\u7b49\u7ea7\uff0c\u53d6\u503c\u662f0~1\u3002<\/p>\n<p>\u5206\u7ec44\u5c31\u662f4\u4f4d\u7684\u62a2\u5360\u7b49\u7ea7\uff0c\u53d6\u503c\u662f0~15\uff0c0\u4f4d\u7684\u54cd\u5e94\u7b49\u7ea7\uff0c\u53d6\u503c\u53ea\u80fd\u662f0\u3002<\/p>\n<p>\u8fd9\u4e94\u79cd\u5206\u7ec4\u65b9\u5f0f\uff0c\u662f\u6211\u4eec\u5728\u7a0b\u5e8f\u4e2d\u81ea\u5df1\u6765\u9009\u62e9\u7684\uff0c\u9009\u597d\u5206\u7ec4\u65b9\u5f0f\u4e4b\u540e\uff0c\u6211\u4eec\u5728\u914d\u7f6e\u4f18\u5148\u7ea7\u7684\u65f6\u5019\uff0c\u5c31\u8981\u6ce8\u610f\u62a2\u5360\u4f18\u5148\u7ea7\u548c\u54cd\u5e94\u4f18\u5148\u7ea7\u7684\u53d6\u503c\u8303\u56f4\u4e86\uff0c\u4e0d\u8981\u8d85\u51fa\u8fd9\u4e2a\u8868\u91cc\u89c4\u5b9a\u7684\u53d6\u503c\u8303\u56f4\u3002<\/p>\n<h2>EXTI\u5916\u90e8\u4e2d\u65ad<\/h2>\n<p>\u4e86\u89e3\u5b8cNVIC\u8fd9\u4e2a\u53eb\u53f7\u7cfb\u7edf\u548c\u53eb\u53f7\u89c4\u5219\uff0c\u6211\u4eec\u5c31\u6765\u770b\u4e00\u4e0b\u7b2c\u4e00\u4e2a\u75c5\u4eba\uff0cEXTI\u5916\u90e8\u4e2d\u65ad\u3002<\/p>\n<p>EXTI\uff08Extern Interrupt\uff09\u5916\u90e8\u4e2d\u65ad EXTI\u53ef\u4ee5\u76d1\u6d4b\u6307\u5b9aGPIO\u53e3\u7684\u7535\u5e73\u4fe1\u53f7\uff0c\u5f53\u5176\u6307\u5b9a\u7684GPIO\u53e3\u4ea7\u751f\u7535\u5e73\u53d8\u5316\u65f6\uff0cEXTI\u5c06\u7acb\u5373\u5411NVIC\u53d1\u51fa\u4e2d\u65ad\u7533\u8bf7\uff0c\u7ecf\u8fc7NVIC\u88c1\u51b3\u540e\u5373\u53ef\u4e2d\u65adCPU\u4e3b\u7a0b\u5e8f\uff0c\u4f7fCPU\u6267\u884cEXTI\u5bf9\u5e94\u7684\u4e2d\u65ad\u7a0b\u5e8f\uff0c\u8fd9\u5c31\u662fEXTI\u7684\u57fa\u672c\u529f\u80fd\uff0c\u7b80\u5355\u6765\u5c31\u662f\u5f15\u811a\u7535\u5e73\u53d8\u5316\uff0c\u7533\u8bf7\u4e2d\u65ad\u3002<\/p>\n<p>\u652f\u6301\u7684\u89e6\u53d1\u65b9\u5f0f\uff1a\u4e0a\u5347\u6cbf\/\u4e0b\u964d\u6cbf\/\u53cc\u8fb9\u6cbf\/\u8f6f\u4ef6\u89e6\u53d1<\/p>\n<p>\u652f\u6301\u7684GPIO\u53e3\uff1a\u6240\u6709GPIO\u53e3\uff0c\u4f46\u76f8\u540c\u7684Pin\u4e0d\u80fd\u540c\u65f6\u89e6\u53d1\u4e2d\u65ad\uff0c\u610f\u601d\u662f\uff0c\u6bd4\u5982PA0\u548cPB0\u4e0d\u80fd\u540c\u65f6\u7528\u6216\u8005PA1\\PB1\\PC1\u8fd9\u6837\u7684\uff0c\u7aef\u53e3GPIO_Pin\u4e00\u6837\u7684\uff0c\u53ea\u80fd\u90091\u4e2a\u4f5c\u4e3a\u4e2d\u65ad\u5f15\u811a\u3002\u6240\u4ee5\u5982\u679c\u6709\u591a\u4e2a\u4e2d\u65ad\u5f15\u811a\uff0c\u8981\u9009\u62e9\u4e0d\u540c\u7684Pin\u7684\u5f15\u811a\uff0c\u6bd4\u5982PA6\\PA7\u548cPB15\\PB0\\PB1\u8fd9\u6837\u7684\u90fd\u53ef\u4ee5\u3002<\/p>\n<p>\u901a\u9053\u6570\uff1a16\u4e2aGPIO_Pin\uff0c\u5916\u52a0PVD\u8f93\u51fa\u3001RTC\u95f9\u949f\u3001USB\u5524\u9192\u3001\u4ee5\u592a\u7f51\u5524\u9192\u517120\u4e2a\u4e2d\u65ad\u7ebf\u8def\u3002<\/p>\n<p>\u89e6\u53d1\u54cd\u5e94\u65b9\u5f0f\uff1a\u4e2d\u65ad\u54cd\u5e94\/\u4e8b\u4ef6\u54cd\u5e94\uff08\u4e2d\u65ad\u54cd\u5e94\u662f\u6b63\u5e38\u6d41\u7a0b\uff0c\u5f15\u811a\u7535\u5e73\u53d8\u5316\u89e6\u53d1\u4e2d\u65ad\uff1b\u4e8b\u4ef6\u54cd\u5e94\u4e0d\u4f1a\u89e6\u53d1\u4e2d\u65ad\uff0c\u800c\u662f\u89e6\u53d1\u522b\u7684\u5916\u8bbe\u64cd\u4f5c\uff0c\u5c5e\u4e8e\u5916\u8bbe\u4e4b\u95f4\u7684\u8054\u5408\u5de5\u4f5c\uff09<\/p>\n<div class=\"sc-alert sc-alert--info\"><span class=\"sc-alert__icon\"><svg viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><circle cx=\"12\" cy=\"12\" r=\"10\"\/><line x1=\"12\" y1=\"16\" x2=\"12\" y2=\"12\"\/><line x1=\"12\" y1=\"8\" x2=\"12.01\" y2=\"8\"\/><\/svg><\/span><div class=\"sc-alert__content\">\u4e0a\u5347\u6cbf\uff0c\u5c31\u662f\u7535\u5e73\u4ece\u4f4e\u7535\u5e73\u5230\u9ad8\u7535\u5e73\u7684\u77ac\u95f4\u89e6\u53d1\u4e2d\u65ad\uff1b\u4e0b\u964d\u6cbf\u5c31\u662f\u9ad8\u7535\u5e73\u53d8\u5230\u4f4e\u7535\u5e73\u7684\u77ac\u95f4\u89e6\u53d1\u4e2d\u65ad\uff1b\u53cc\u8fb9\u6cbf\uff0c\u5c31\u662f\u4e0a\u5347\u6cbf\u548c\u4e0b\u964d\u6cbf\u90fd\u53ef\u4ee5\u89e6\u53d1\u4e2d\u65ad\uff1b\u8f6f\u4ef6\u89e6\u53d1\uff0c\u5c31\u662f\u5f15\u811a\u5565\u4e8b\u6ca1\u6709\uff0c\u7a0b\u5e8f\u91cc\u6267\u884c\u4e00\u53e5\u4ee3\u7801\uff0c\u5c31\u80fd\u89e6\u53d1\u4e2d\u65ad\u3002<\/div><\/div>\n<h3>EXTI\u57fa\u672c\u7ed3\u6784<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-390\" src=\"https:\/\/aoofoo.com\/wp-content\/uploads\/2024\/06\/1-80.png\" alt=\"\" width=\"745\" height=\"412\" \/><\/p>\n<p>\u9996\u5148\u6700\u5de6\u8fb9\u662fGPIO\u53e3\u7684\u5916\u8bbe\uff0c\u6bd4\u5982GPIOA\u3001GPIOB\u3001GPIOC\u7b49\u7b49\uff0c\u6bcf\u4e2aGPIO\u5916\u8bbe\u90fd\u670916\u4e2a\u5f15\u811a\uff0c\u6240\u4ee5\u8fdb\u676516\u6839\u7ebf\uff0c\u90a3\u6211\u4eec\u521a\u624d\u8bf4\u4e86\uff0cEXTI\u6a21\u5757\u53ea\u670916\u4e2aGPIO\u7684\u901a\u9053\uff0c\u4f46\u8fd9\u91cc\u6bcf\u4e2aGPIO\u5916\u8bbe\u90fd\u670916\u4e2a\u5f15\u811a\uff0c\u5982\u679c\u6bcf\u4e2a\u5f15\u811a\u5360\u7528\u4e00\u4e2a\u901a\u9053\uff0c\u90a3EXTI\u768416\u4e2a\u901a\u9053\u663e\u7136\u662f\u4e0d\u591f\u7528\u7684\uff0c\u6240\u4ee5\u5728\u8fd9\u91cc\u4f1a\u6709\u4e00\u4e2aAFIO\u4e2d\u65ad\u5f15\u811a\u9009\u62e9\u7684\u7535\u8def\u6a21\u5757\uff0c\u8fd9\u4e2aAFIO\u5c31\u662f\u4e00\u4e2a\u6570\u636e\u9009\u62e9\u5668\uff0c\u5b83\u53ef\u4ee5\u5728\u8fd9\u524d\u97623\u4e2aGPIO\u5916\u8bbe\u768416\u4e2a\u5f15\u811a\u91cc\u9009\u62e9\u5176\u4e2d\u4e00\u4e2a\u8fde\u63a5\u5230\u540e\u9762\u7684EXTI\u7684\u901a\u9053\u91cc\uff0c\u6240\u4ee5\u524d\u9762\u8bf4\uff0c\u76f8\u540c\u7684Pin\u4e0d\u80fd\u540c\u65f6\u89e6\u53d1\u4e2d\u65ad\uff0c\u56e0\u4e3a\u5bf9\u4e8ePA0\u3001PB0\u3001PC0\u8fd9\u4e9b\uff0c\u901a\u8fc7AFIO\u9009\u62e9\u4e4b\u540e\uff0c\u53ea\u6709\u4e00\u5176\u4e2d\u4e00\u4e2a\u80fd\u63a5\u5230EXTI\u7684\u901a\u90530\u4e0a\uff0c\u540c\u7406\uff0cPA1\u3001PB1\u3001PC1\u8fd9\u4e9b\uff0c\u4e5f\u53ea\u80fd\u6709\u4e00\u4e2a\uff0c\u8fde\u63a5\u5230\u901a\u90531\u4e0a\u3002\u8fd9\u5c31\u662f\u6240\u6709GPIO\u53e3\u90fd\u80fd\u89e6\u53d1\u4e2d\u65ad\uff0c\u4f46\u76f8\u540c\u7684Pin\u4e0d\u80fd\u540c\u65f6\u89e6\u53d1\u4e2d\u65ad\u7684\u539f\u56e0\u3002<\/p>\n<p>\u7136\u540e\u901a\u8fc7AFIO\u9009\u62e9\u4e4b\u540e\u768416\u4e2a\u901a\u9053\uff0c\u5c31\u63a5\u5230\u4e86EXTI\u8fb9\u6cbf\u68c0\u6d4b\u53ca\u63a7\u5236\u7535\u8def\u4e0a\uff0c\u540c\u65f6\uff0c\u4e0b\u9762\u8fd94\u4e2a\u8e6d\u7f51\u7684\u5916\u8bbe\uff08PVD\\RTC\\USB\\ETH\uff09\u4e5f\u5e76\u5217\u63a5\u8fdb\u6765\uff0c\u8fd9\u4e9b\u52a0\u8d77\u6765\u5c31\u7ec4\u6210\u4e86EXTI\u768420\u4e2a\u8f93\u5165\u4fe1\u53f7\u3002<\/p>\n<p>\u7136\u540e\u7ecf\u8fc7EXTI\u8fb9\u6cbf\u68c0\u6d4b\u7535\u8def\u4e4b\u540e\uff0c\u5206\u4e3a\u4e86\u4e24\u79cd\u8f93\u51fa\uff0c\u5176\u4e2d\u63a5\u5230\u4e86NVIC\u7684\u8fd9\u4e9b\uff0c\u662f\u7528\u6765\u89e6\u53d1\u4e2d\u65ad\u7684\u3002\uff08\u8fd9\u91cc\u6ce8\u610f\u4e0b\uff0c\u672c\u676520\u8def\u8f93\u5165\uff0c\u5e94\u8be5\u670920\u8def\u4e2d\u65ad\u7684\u8f93\u51fa\uff0c\u4f46\u662f\u53ef\u80fdST\u516c\u53f8\u89c9\u5f97\u8fd920\u4e2a\u8f93\u51fa\u592a\u591a\u4e86\uff0c\u6bd4\u8f83\u5360\u7528NVIC\u7684\u901a\u9053\u8d44\u6e90\uff0c\u6240\u4ee5\u5c31\u628a\u5176\u4e2d\u5916\u90e8\u4e2d\u65ad\u76849~5\u548c15~10\uff0c\u7ed9\u5206\u5230\u4e86\u4e00\u4e2a\u901a\u9053\u91cc\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5916\u90e8\u4e2d\u65ad\u76849~5\u4f1a\u89e6\u53d1\u540c\u4e00\u4e2a\u4e2d\u65ad\u51fd\u6570\uff0c15~10\u4e5f\u4f1a\u89e6\u53d1\u540c\u4e00\u4e2a\u4e2d\u65ad\u51fd\u6570\uff0c\u5728\u7f16\u7a0b\u7684\u65f6\u5019\uff0c\u6211\u4eec\u5728\u8fd9\u4e24\u4e2a\u4e2d\u65ad\u51fd\u6570\u91cc\uff0c\u9700\u8981\u518d\u6839\u636e\u6807\u5fd7\u4f4d\u6765\u533a\u5206\u5230\u5e95\u662f\u54ea\u4e2a\u4e2d\u65ad\u8fdb\u6765\u7684\uff09\uff1b\u53e6\u5916\u4e00\u79cd\u8f93\u51fa\uff0c\u662f\u670920\u6761\u8f93\u51fa\u7ebf\u8def\u63a5\u5230\u4e86\u5176\u4ed6\u5916\u8bbe\uff0c\u8fd9\u5c31\u662f\u7528\u6765\u89e6\u53d1\u5176\u4ed6\u5916\u8bbe\u64cd\u4f5c\u7684\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u521a\u624d\u8bf4\u7684\u4e8b\u4ef6\u54cd\u5e94\u3002<\/p>\n<h4>AFIO\u590d\u7528IO\u53e3\u5185\u90e8\u7535\u8def\u56fe<\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-391\" src=\"https:\/\/aoofoo.com\/wp-content\/uploads\/2024\/06\/1-81.png\" alt=\"\" width=\"623\" height=\"695\" \/><\/p>\n<p>\u5728STM32\u4e2d\uff0cAFIO\u4e3b\u8981\u5b8c\u6210\u4e24\u4e2a\u4efb\u52a1\uff1a<\/p>\n<p>1.\u4e2d\u65ad\u5f15\u811a\u9009\u62e9\u3002<\/p>\n<p>2.\u590d\u7528\u529f\u80fd\u5f15\u811a\u91cd\u6620\u5c04\u3002<\/p>\n<p>\u590d\u7528\u529f\u80fd\u5f15\u811a\u91cd\u6620\u5c04\u5c31\u662f\u6211\u4eec\u6700\u5f00\u59cb\u63d0\u5230\u7684\u5f15\u811a\u5b9a\u4e49\u8868\uff0c\u5f53\u6211\u4eec\u60f3\u628a\u5f15\u811a\u7684\u9ed8\u8ba4\u590d\u7528\u529f\u80fd\u7684\u5f15\u811a\u6362\u5230\u91cd\u5b9a\u4e49\u7684\u8fd9\u4e2a\u4f4d\u7f6e\u6765\uff0c\u5c31\u662f\u7528AFIO\u6765\u5b8c\u6210\u7684\uff0c\u8fd9\u4e5f\u662fAFIO\u7684\u4e00\u5927\u4e3b\u8981\u529f\u80fd\u3002<\/p>\n<h4>EXTI\u5185\u90e8\u6846\u56fe<\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-392\" src=\"https:\/\/aoofoo.com\/wp-content\/uploads\/2024\/06\/1-82.png\" alt=\"\" width=\"1140\" height=\"841\" \/><\/p>\n<div class=\"sc-collapse\"><div class=\"sc-collapse__header\"><svg class=\"sc-collapse__arrow\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><polyline points=\"6 9 12 15 18 9\"\/><\/svg>\u6216\u95e8\u3001\u4e0e\u95e8\u3001\u975e\u95e8\u548c\u6570\u636e\u9009\u62e9\u5668<\/div><div class=\"sc-collapse__body\"><div class=\"sc-collapse__content\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-393\" src=\"https:\/\/aoofoo.com\/wp-content\/uploads\/2024\/06\/1-83.png\" alt=\"\" width=\"59\" height=\"69\" 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