{"id":62871,"date":"2025-04-29T10:51:13","date_gmt":"2025-04-29T02:51:13","guid":{"rendered":"https:\/\/fwq.ai\/blog\/62871\/"},"modified":"2025-04-29T10:51:13","modified_gmt":"2025-04-29T02:51:13","slug":"linux%e4%b8%8b%e6%8e%a7%e5%88%b6gpio%e7%9a%84%e6%96%b9%e6%b3%95-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/62871\/","title":{"rendered":"Linux\u4e0b\u63a7\u5236GPIO\u7684\u65b9\u6cd5"},"content":{"rendered":"

\n linux\u4e0b\u53ef\u4ee5\u4f7f\u7528\u201csysfs\u63a5\u53e3\u201d\u3001\u201cgpio\u5e93\u201d\u3001\u201c\u8bbe\u5907\u6811\u201d\u548c\u201c\u76f4\u63a5\u8bbf\u95ee\u5bc4\u5b58\u5668\u201d4\u79cd\u65b9\u6cd5\u6765\u63a7\u5236gpio\uff1a1\u3001\u901a\u8fc7\/sys\/class\/gpio\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\uff0c\u53ef\u4ee5\u8bbf\u95ee\u548c\u63a7\u5236gpio\u5f15\u811a\uff1b2\u3001\u5f00\u6e90\u7684gpio\u5e93\u53ef\u4ee5\u7b80\u5316gpio\u7684\u63a7\u5236\uff0c\u4f7f\u5f97\u5728linux\u7cfb\u7edf\u4e0a\u7f16\u7a0b\u63a7\u5236gpio\u66f4\u52a0\u65b9\u4fbf\uff1b3\u3001\u53ef\u4ee5\u7f16\u8f91\u8bbe\u5907\u6811\u6587\u4ef6\uff0c\u5b9a\u4e49gpio\u7684\u5c5e\u6027\u548c\u529f\u80fd\uff0c\u5e76\u5728\u7cfb\u7edf\u542f\u52a8\u65f6\u52a0\u8f7d\u8bbe\u5907\u6811\u7b49\u7b49\u3002\n<\/p><\/blockquote>\n

\"Linux\u4e0b\u63a7\u5236GPIO\u7684\u65b9\u6cd5\u63d2\u56fe\"<\/p>\n

Linux\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\u6765\u63a7\u5236GPIO\uff08\u901a\u7528\u8f93\u5165\u8f93\u51fa\uff09\uff1a<\/p>\n

    \n
  1. \n

    Sysfs\u63a5\u53e3\uff1aSysfs\u662fLinux\u5185\u6838\u63d0\u4f9b\u7684\u4e00\u79cd\u6587\u4ef6\u7cfb\u7edf\u63a5\u53e3\uff0c\u7528\u4e8e\u4e0e\u8bbe\u5907\u9a71\u52a8\u7a0b\u5e8f\u8fdb\u884c\u4ea4\u4e92\u3002\u901a\u8fc7\/sys\/class\/gpio\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\uff0c\u53ef\u4ee5\u8bbf\u95ee\u548c\u63a7\u5236GPIO\u5f15\u811a\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528Shell\u547d\u4ee4\u6216\u7f16\u7a0b\u8bed\u8a00\uff08\u4f8b\u5982Python\uff09\u6765\u8bfb\u53d6\u6216\u5199\u5165\u8fd9\u4e9b\u6587\u4ef6\uff0c\u4ee5\u63a7\u5236GPIO\u7684\u72b6\u6001\u3002<\/p>\n<\/li>\n

  2. \n

    GPIO\u5e93\uff1a\u6709\u4e00\u4e9b\u5f00\u6e90\u7684GPIO\u5e93\u53ef\u4ee5\u7b80\u5316GPIO\u7684\u63a7\u5236\u3002\u4f8b\u5982\uff0cWiringPi\u3001RPi.GPIO\u548clibgpiod\u7b49\u5e93\u63d0\u4f9b\u4e86\u51fd\u6570\u548c\u63a5\u53e3\uff0c\u4f7f\u5f97\u5728Linux\u7cfb\u7edf\u4e0a\u7f16\u7a0b\u63a7\u5236GPIO\u66f4\u52a0\u65b9\u4fbf\u3002\u4f60\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u9009\u62e9\u9002\u5408\u7684\u5e93\uff0c\u5e76\u6309\u7167\u5176\u6587\u6863\u8fdb\u884c\u5b89\u88c5\u548c\u4f7f\u7528\u3002<\/p>\n<\/li>\n

  3. \n

    \u8bbe\u5907\u6811\uff08Device Tree\uff09\uff1a\u5bf9\u4e8e\u4e00\u4e9b\u5d4c\u5165\u5f0f\u7cfb\u7edf\uff0cGPIO\u7684\u6620\u5c04\u548c\u914d\u7f6e\u4fe1\u606f\u901a\u5e38\u5b58\u50a8\u5728\u8bbe\u5907\u6811\u4e2d\u3002\u4f60\u53ef\u4ee5\u7f16\u8f91\u8bbe\u5907\u6811\u6587\u4ef6\uff0c\u5b9a\u4e49GPIO\u7684\u5c5e\u6027\u548c\u529f\u80fd\uff0c\u5e76\u5728\u7cfb\u7edf\u542f\u52a8\u65f6\u52a0\u8f7d\u8bbe\u5907\u6811\uff0c\u4f7f\u5f97GPIO\u80fd\u591f\u88ab\u6b63\u786e\u5730\u521d\u59cb\u5316\u548c\u4f7f\u7528\u3002<\/p>\n<\/li>\n

  4. \n

    \u76f4\u63a5\u8bbf\u95ee\u5bc4\u5b58\u5668\uff1a\u5728\u4e00\u4e9b\u7279\u5b9a\u7684\u5d4c\u5165\u5f0f\u5e73\u53f0\u4e0a\uff0c\u4f60\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95eeGPIO\u76f8\u5173\u7684\u7269\u7406\u5bc4\u5b58\u5668\u6765\u8fdb\u884c\u63a7\u5236\u3002\u8fd9\u9700\u8981\u5bf9\u786c\u4ef6\u548c\u5e95\u5c42\u7cfb\u7edf\u6709\u66f4\u6df1\u5165\u7684\u4e86\u89e3\uff0c\u56e0\u6b64\u9700\u8981\u8c28\u614e\u64cd\u4f5c\u3002<\/p>\n<\/li>\n<\/ol>\n

    \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cGPIO\u7684\u63a7\u5236\u9700\u8981\u7279\u6743\u6743\u9650\uff08\u901a\u5e38\u662froot\u6216\u5177\u5907\u76f8\u5e94\u6743\u9650\u7684\u7528\u6237\uff09\u624d\u80fd\u6267\u884c\u3002\u5728\u7f16\u7a0b\u8fc7\u7a0b\u4e2d\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u9002\u5f53\u7684\u6743\u9650\u6216\u914d\u7f6e\uff0c\u4ee5\u786e\u4fdd\u5bf9GPIO\u8fdb\u884c\u8bbf\u95ee\u548c\u63a7\u5236\u3002<\/p>\n

    \u8bf7\u8bb0\u4f4f\uff0c\u5728\u64cd\u4f5cGPIO\u65f6\uff0c\u8981\u5c0f\u5fc3\u907f\u514d\u9519\u8bef\u64cd\u4f5c\uff0c\u4ee5\u514d\u9020\u6210\u635f\u574f\u6216\u4e0d\u826f\u5f71\u54cd\u3002\u5728\u4f7f\u7528GPIO\u524d\uff0c\u5efa\u8bae\u5148\u4e86\u89e3\u786c\u4ef6\u89c4\u683c\u548c\u76f8\u5173\u6587\u6863\uff0c\u5e76\u6309\u7167\u6b63\u786e\u7684\u65b9\u6cd5\u8fdb\u884c\u63a7\u5236\u548c\u64cd\u4f5c\u3002<\/p>\n

    \u4ee5\u4e0a\u5c31\u662fLinux\u4e0b\u63a7\u5236GPIO\u7684\u65b9\u6cd5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

    linux\u4e0b\u53ef\u4ee5\u4f7f\u7528\u201csysfs\u63a5\u53e3\u201d\u3001\u201cgpio\u5e93\u201d\u3001\u201c\u8bbe\u5907\u6811\u201d\u548c\u201c\u76f4\u63a5\u8bbf\u95ee\u5bc4\u5b58\u5668\u201d4\u79cd\u65b9\u6cd5\u6765\u63a7\u5236gpio\uff1a1\u3001\u901a\u8fc7\/sys\/class\/gpio\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\uff0c\u53ef\u4ee5\u8bbf\u95ee\u548c\u63a7\u5236gpio\u5f15\u811a\uff1b2\u3001\u5f00\u6e90\u7684gpio\u5e93\u53ef\u4ee5\u7b80\u5316gpio\u7684\u63a7\u5236\uff0c\u4f7f\u5f97\u5728linux\u7cfb\u7edf\u4e0a\u7f16\u7a0b\u63a7\u5236gpio\u66f4\u52a0\u65b9\u4fbf\uff1b3\u3001\u53ef\u4ee5\u7f16\u8f91\u8bbe\u5907\u6811\u6587\u4ef6\uff0c\u5b9a\u4e49gpio\u7684\u5c5e\u6027\u548c\u529f\u80fd\uff0c\u5e76\u5728\u7cfb\u7edf\u542f\u52a8\u65f6\u52a0\u8f7d\u8bbe\u5907\u6811\u7b49\u7b49\u3002 Linux\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\u6765\u63a7\u5236GPIO\uff08\u901a\u7528\u8f93\u5165\u8f93\u51fa\uff09\uff1a Sysfs\u63a5\u53e3\uff1aSysfs\u662fLinux\u5185\u6838\u63d0\u4f9b\u7684\u4e00\u79cd\u6587\u4ef6\u7cfb\u7edf\u63a5\u53e3\uff0c\u7528\u4e8e\u4e0e\u8bbe\u5907\u9a71\u52a8\u7a0b\u5e8f\u8fdb\u884c\u4ea4\u4e92\u3002\u901a\u8fc7\/sys\/class\/gpio\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\uff0c\u53ef\u4ee5\u8bbf\u95ee\u548c\u63a7\u5236GPIO\u5f15\u811a\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528Shell\u547d\u4ee4\u6216\u7f16\u7a0b\u8bed\u8a00\uff08\u4f8b\u5982Python\uff09\u6765\u8bfb\u53d6\u6216\u5199\u5165\u8fd9\u4e9b\u6587\u4ef6\uff0c\u4ee5\u63a7\u5236GPIO\u7684\u72b6\u6001\u3002 GPIO\u5e93\uff1a\u6709\u4e00\u4e9b\u5f00\u6e90\u7684GPIO\u5e93\u53ef\u4ee5\u7b80\u5316GPIO\u7684\u63a7\u5236\u3002\u4f8b\u5982\uff0cWiringPi\u3001RPi.GPIO\u548clibgpiod\u7b49\u5e93\u63d0\u4f9b\u4e86\u51fd\u6570\u548c\u63a5\u53e3\uff0c\u4f7f\u5f97\u5728Linux\u7cfb\u7edf\u4e0a\u7f16\u7a0b\u63a7\u5236GPIO\u66f4\u52a0\u65b9\u4fbf\u3002\u4f60\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u9009\u62e9\u9002\u5408\u7684\u5e93\uff0c\u5e76\u6309\u7167\u5176\u6587\u6863\u8fdb\u884c\u5b89\u88c5\u548c\u4f7f\u7528\u3002 \u8bbe\u5907\u6811\uff08Device Tree\uff09\uff1a\u5bf9\u4e8e\u4e00\u4e9b\u5d4c\u5165\u5f0f\u7cfb\u7edf\uff0cGPIO\u7684\u6620\u5c04\u548c\u914d\u7f6e\u4fe1\u606f\u901a\u5e38\u5b58\u50a8\u5728\u8bbe\u5907\u6811\u4e2d\u3002\u4f60\u53ef\u4ee5\u7f16\u8f91\u8bbe\u5907\u6811\u6587\u4ef6\uff0c\u5b9a\u4e49GPIO\u7684\u5c5e\u6027\u548c\u529f\u80fd\uff0c\u5e76\u5728\u7cfb\u7edf\u542f\u52a8\u65f6\u52a0\u8f7d\u8bbe\u5907\u6811\uff0c\u4f7f\u5f97GPIO\u80fd\u591f\u88ab\u6b63\u786e\u5730\u521d\u59cb\u5316\u548c\u4f7f\u7528\u3002 \u76f4\u63a5\u8bbf\u95ee\u5bc4\u5b58\u5668\uff1a\u5728\u4e00\u4e9b\u7279\u5b9a\u7684\u5d4c\u5165\u5f0f\u5e73\u53f0\u4e0a\uff0c\u4f60\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95eeGPIO\u76f8\u5173\u7684\u7269\u7406\u5bc4\u5b58\u5668\u6765\u8fdb\u884c\u63a7\u5236\u3002\u8fd9\u9700\u8981\u5bf9\u786c\u4ef6\u548c\u5e95\u5c42\u7cfb\u7edf\u6709\u66f4\u6df1\u5165\u7684\u4e86\u89e3\uff0c\u56e0\u6b64\u9700\u8981\u8c28\u614e\u64cd\u4f5c\u3002 \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cGPIO\u7684\u63a7\u5236\u9700\u8981\u7279\u6743\u6743\u9650\uff08\u901a\u5e38\u662froot\u6216\u5177\u5907\u76f8\u5e94\u6743\u9650\u7684\u7528\u6237\uff09\u624d\u80fd\u6267\u884c\u3002\u5728\u7f16\u7a0b\u8fc7\u7a0b\u4e2d\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u9002\u5f53\u7684\u6743\u9650\u6216\u914d\u7f6e\uff0c\u4ee5\u786e\u4fdd\u5bf9GPIO\u8fdb\u884c\u8bbf\u95ee\u548c\u63a7\u5236\u3002 \u8bf7\u8bb0\u4f4f\uff0c\u5728\u64cd\u4f5cGPIO\u65f6\uff0c\u8981\u5c0f\u5fc3\u907f\u514d\u9519\u8bef\u64cd\u4f5c\uff0c\u4ee5\u514d\u9020\u6210\u635f\u574f\u6216\u4e0d\u826f\u5f71\u54cd\u3002\u5728\u4f7f\u7528GPIO\u524d\uff0c\u5efa\u8bae\u5148\u4e86\u89e3\u786c\u4ef6\u89c4\u683c\u548c\u76f8\u5173\u6587\u6863\uff0c\u5e76\u6309\u7167\u6b63\u786e\u7684\u65b9\u6cd5\u8fdb\u884c\u63a7\u5236\u548c\u64cd\u4f5c\u3002 \u4ee5\u4e0a\u5c31\u662fLinux\u4e0b\u63a7\u5236GPIO\u7684\u65b9\u6cd5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-62871","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62871","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=62871"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62871\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=62871"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=62871"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=62871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}