{"id":5062,"date":"2023-09-18T15:46:20","date_gmt":"2023-09-18T07:46:20","guid":{"rendered":"https:\/\/www.yimenyun.cn\/emen\/?p=5062"},"modified":"2023-09-18T15:46:20","modified_gmt":"2023-09-18T07:46:20","slug":"linuxiic%e6%98%af%e4%bb%80%e4%b9%88%e6%84%8f%e6%80%9d%ef%bc%9f%e6%9c%89%e4%bb%80%e4%b9%88%e7%94%a8%e9%80%94%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yimenyun.cn\/emen\/5062\/","title":{"rendered":"linuxiic\u662f\u4ec0\u4e48\u610f\u601d\uff1f\u6709\u4ec0\u4e48\u7528\u9014\uff1f"},"content":{"rendered":"

Linux I2C\uff08Inter-Integrated Circuit\uff09\u662f\u4e00\u79cd\u4e32\u884c\u901a\u4fe1\u534f\u8bae\uff0c\u7528\u4e8e\u5728\u7535\u8def\u677f\u4e0a\u7684\u96c6\u6210\u7535\u8def\u4e4b\u95f4\u8fdb\u884c\u77ed\u8ddd\u79bb\u6570\u636e\u4f20\u8f93\u3002\u8be5\u534f\u8bae\u662f\u7531Philips\uff08\u73b0\u5728\u662fNXP\uff09\u57281982\u5e74\u5f00\u53d1\u7684\uff0c\u540e\u6765\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u79cd\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u5305\u62ec\u5355\u7247\u673a\u3001\u4f20\u611f\u5668\u3001LCD\u663e\u793a\u5668\u7b49\u7b49\u3002<\/p>\n

Linux I2C\u534f\u8bae\u662f\u4e00\u79cd\u4e3b\u4ece\u5f0f\u901a\u4fe1\u534f\u8bae\uff0c\u5176\u4e2d\u4e00\u4e2a\u8bbe\u5907\u4f5c\u4e3a\u4e3b\u8bbe\u5907\uff0c\u63a7\u5236\u603b\u7ebf\u4e0a\u7684\u6570\u636e\u4f20\u8f93\uff0c\u800c\u5176\u4ed6\u8bbe\u5907\u5219\u4f5c\u4e3a\u4ece\u8bbe\u5907\uff0c\u63a5\u53d7\u4e3b\u8bbe\u5907\u7684\u547d\u4ee4\u5e76\u8fd4\u56de\u6570\u636e\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528i2c-tools\u8f6f\u4ef6\u5305\u6765\u64cd\u4f5cI2C\u603b\u7ebf\u4e0a\u7684\u8bbe\u5907\u3002<\/p>\n

I2C\u603b\u7ebf\u4e0a\u7684\u6bcf\u4e2a\u8bbe\u5907\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684\u5730\u5740\uff0c\u7528\u4e8e\u533a\u5206\u4e0d\u540c\u7684\u8bbe\u5907\u3002\u5730\u5740\u53ef\u4ee5\u662f7\u4f4d\u621610asp\u5c01\u88c5\u4e3aexe<\/a>\u4f4d\uff0c\u5176\u4e2d7\u4f4d\u5730\u5740\u662f\u6700\u5e38\u7528\u7684\u3002\u5728Linuxphp\u5728\u7ebf\u6253\u5305exe<\/a>\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528i2cdetect\u547d\u4ee4\u6765\u626b\u63cfI2C\u603b\u7ebf\u4e0a\u7684\u8bbe\u5907\u5730\u5740\u3002<\/p>\n

\u5bf9\u4e8eI2C\u8bbe\u5907\u7684\u8bfb\u5199\u64cd\u4f5c\uff0c\u53ef\u4ee5\u4f7f\u7528ioctl\u7cfb\u7edf\u8c03\u7528\u6765\u8fdb\u884c\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0cI2C\u8bbe\u5907\u901a\u5e38\u8868\u793a\u4e3a\u4e00\u4e2a\u5b57\u7b26\u8bbe\u5907\u6587\u4ef6\uff0c\u5728\/dev\u76ee\u5f55\u4e0b\u3002\u53ef\u4ee5\u4f7f\u7528open\u7cfb\u7edf\u8c03\u7528\u6253\u5f00\u8bbe\u5907\u6587\u4ef6\uff0c\u7136\u540e\u4f7f\u7528ioctl\u7cfb\u7edf\u8c03\u7528\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002<\/p>\n

\u5728Linux\u5185\u6838\u4e2d\uff0cI2C\u603b\u7ebf\u7684\u9a71\u52a8\u7a0b\u5e8f\u901a\u5e38\u88ab\u5b9e\u73b0\u4e3a\u4e00\u4e2a\u5185\u6838\u6a21\u5757\u3002\u5185\u6838\u6a21\u5757\u8d1f\u8d23\u63a7\u5236I2C\u603b\u7ebf\u4e0a\u7684\u6570\u636e\u4f20\u8f93\uff0c\u5e76\u63d0\u4f9bAPI\u4f9b\u7528\u6237\u7a7a\u95f4\u7a0b\u5e8f\u4f7f\u7528\u3002\u7528\u6237\u7a7a\u95f4\u7a0b\u5e8f\u53ef\u4ee5\u4f7f\u7528ioctl\u7cfb\u7edf\u8c03\u7528\u6765\u8c03\u7528\u5185\u6838\u6a21\u5757<\/p>\n

<\/figure>\n<\/p>\n

\u63d0\u4f9b\u7684API\u3002<\/p>\n

\u603b\u4e4b\uff0cLinux I2C\u534f\u8bae\u662f\u4e00\u79cd\u5e38\u7528\u7684\u4e32\u884c\u901a\u4fe1\u534f\u8bae\uff0c\u7528\u4e8e\u5728\u7535\u8def\u677f\u4e0a\u7684\u96c6\u6210\u7535\u8def\u4e4b\u95f4\u8fdb\u884c\u77ed\u8ddd\u79bb\u6570\u636e\u4f20\u8f93\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528i2c-tools\u8f6f\u4ef6\u5305\u548cioctl\u7cfb\u7edf\u8c03\u7528\u6765\u64cd\u4f5cI2C\u603b\u7ebf\u4e0a\u7684\u8bbe\u5907\u3002\u540c\u65f6\uff0cI2C\u603b\u7ebf\u7684\u9a71\u52a8\u7a0b\u5e8f\u901a\u5e38\u88ab\u5b9e\u73b0\u4e3a\u4e00\u4e2a\u5185\u6838\u6a21\u5757\uff0c\u63d0\u4f9bAPI\u4f9b\u7528\u6237\u7a7a\u95f4\u7a0b\u5e8f\u4f7f\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Linux I2C\uff08Inter-Integrated Circuit\uff09\u662f\u4e00\u79cd\u4e32\u884c\u901a\u4fe1\u534f\u8bae\uff0c\u7528\u4e8e\u5728\u7535\u8def\u677f\u4e0a\u7684\u96c6\u6210\u7535\u8def\u4e4b\u95f4\u8fdb\u884c\u77ed\u8ddd\u79bb\u6570\u636e\u4f20\u8f93\u3002\u8be5\u534f\u8bae\u662f\u7531Philips\uff08\u73b0\u5728\u662fNXP\uff09\u57281982\u5e74\u5f00\u53d1\u7684\uff0c<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[969,366,9581,9580,56],"topic":[],"class_list":["post-5062","post","type-post","status-publish","format-standard","hentry","category-exekf","tag-linuxwiki","tag-366","tag-9581","tag-9580","tag-56"],"_links":{"self":[{"href":"https:\/\/www.yimenyun.cn\/emen\/wp-json\/wp\/v2\/posts\/5062","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yimenyun.cn\/emen\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yimenyun.cn\/emen\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yimenyun.cn\/emen\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yimenyun.cn\/emen\/wp-json\/wp\/v2\/comments?post=5062"}],"version-history":[{"count":0,"href":"https:\/\/www.yimenyun.cn\/emen\/wp-json\/wp\/v2\/posts\/5062\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yimenyun.cn\/emen\/wp-json\/wp\/v2\/media?parent=5062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yimenyun.cn\/emen\/wp-json\/wp\/v2\/categories?post=5062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yimenyun.cn\/emen\/wp-json\/wp\/v2\/tags?post=5062"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.yimenyun.cn\/emen\/wp-json\/wp\/v2\/topic?post=5062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}