{"id":66469,"date":"2026-01-26T20:17:32","date_gmt":"2026-01-26T12:17:32","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/66469.html"},"modified":"2026-01-26T20:17:32","modified_gmt":"2026-01-26T12:17:32","slug":"%e8%a7%a3%e7%a0%81%e5%86%85%e9%83%a8%e9%9b%86%e6%88%90%e7%94%b5%e8%b7%af%ef%bc%88iic%ef%bc%89%e4%b8%8eoled%e5%b1%8f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/66469.html","title":{"rendered":"\u89e3\u7801\u5185\u90e8\u96c6\u6210\u7535\u8def\uff08IIC\uff09\u4e0eOLED\u5c4f"},"content":{"rendered":"<h3>\u5185\u90e8\u96c6\u6210\u7535\u8def&#xff08;IIC\/I2C&#xff09;<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121727-69775b5794c8d.png\" alt=\"\u56fe\u724704\" \/><\/p>\n<h4>\u57fa\u672c\u6982\u5ff5<\/h4>\n<ul>\n<li>\u82f1\u6587\u5168\u79f0Inter Integrated Circuit&#xff0c;\u7b80\u79f0IIC\u6216I2C&#xff0c;\u662f\u534a\u53cc\u5de5\u540c\u6b65\u4e32\u884c\u901a\u4fe1\u63a5\u53e3\u534f\u8bae<\/li>\n<li>1982\u5e74\u7531\u98de\u5229\u6d66\u516c\u53f8&#xff08;\u73b0\u6069\u667a\u6d66\u534a\u5bfc\u4f53&#xff09;\u8bbe\u8ba1\u63a8\u51fa<\/li>\n<li>\u8bbe\u8ba1\u521d\u8877&#xff1a;\u4e3a\u5fae\u63a7\u5236\u5668&#xff08;MCU&#xff09;\u4e0e\u5916\u56f4\u82af\u7247\u63d0\u4f9b\u7b80\u6d01\u3001\u53ef\u9760\u3001\u4f4e\u6210\u672c\u7684\u901a\u4fe1\u65b9\u6848&#xff0c;\u7b80\u5316\u786c\u4ef6\u8bbe\u8ba1\u548c\u7cfb\u7edf\u96c6\u6210<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121728-69775b5809335.png\" alt=\"\u56fe\u724701\" \/><\/p>\n<h4>\u5f15\u811a\u8bf4\u660e<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121728-69775b5852667.png\" alt=\"\u56fe\u724702\" 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\/><\/p>\n<ul>\n<li>\u91c7\u7528\u5f00\u6f0f\u8f93\u51fa\u7ed3\u6784&#xff0c;\u53ef\u5b9e\u73b0\u591a\u8bbe\u5907\u53cc\u5411\u901a\u4fe1\u4e0e\u603b\u7ebf\u4ef2\u88c1&#xff0c;\u907f\u514d\u7535\u5e73\u51b2\u7a81<\/li>\n<li>\u8fde\u63a5\u65b9\u5f0f&#xff1a;\u6240\u6709\u5916\u56f4\u5668\u4ef6\u7684SCL\u548cSDA\u5747\u6302\u8f7d\u5728\u4e3b\u63a7\u82af\u7247\u63d0\u4f9b\u7684IIC\u603b\u7ebf\u4e0a&#xff0c;\u5f62\u6210\u5171\u4eab\u4fe1\u53f7\u901a\u9053<\/li>\n<li>\u7a7a\u95f2\u72b6\u6001&#xff1a;\u4e0a\u62c9\u7535\u963b\u5c06SCL\u548cSDA\u5747\u62c9\u81f3\u9ad8\u7535\u5e73&#xff0c;\u603b\u7ebf\u5904\u4e8e\u5f85\u547d\u72b6\u6001&#xff0c;\u968f\u65f6\u54cd\u5e94\u8d77\u59cb\u6761\u4ef6<\/li>\n<\/ul>\n<h4>\u7ebf\u4e0e\u903b\u8f91<\/h4>\n<ul>\n<li>\u591a\u8bbe\u5907\u5171\u4eab\u540c\u4e00\u603b\u7ebf&#xff0c;\u67d0\u8bbe\u5907\u8f93\u51fa\u4f4e\u7535\u5e73\u65f6\u603b\u7ebf\u88ab\u62c9\u4f4e<\/li>\n<li>\u4ec5\u5f53\u6240\u6709\u8bbe\u5907\u91ca\u653e\u603b\u7ebf&#xff08;\u8f93\u51fa\u9ad8\u963b\u6001&#xff09;&#xff0c;\u4e0a\u62c9\u7535\u963b\u624d\u5c06\u603b\u7ebf\u6062\u590d\u9ad8\u7535\u5e73<\/li>\n<li>\u6838\u5fc3\u4f5c\u7528&#xff1a;\u662fIIC\u591a\u4e3b\u8bbe\u5907\u901a\u4fe1\u7684\u57fa\u7840&#xff0c;\u5b9e\u73b0\u603b\u7ebf\u51b2\u7a81\u68c0\u6d4b\u4e0e\u4ef2\u88c1&#xff0c;\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u6709\u5e8f\u6027&#xff0c;\u7b80\u5316\u786c\u4ef6\u8bbe\u8ba1\u3001\u964d\u4f4e\u7cfb\u7edf\u6210\u672c<\/li>\n<\/ul>\n<p>\u4ef2\u88c1\u8fc7\u7a0b<\/p>\n<p>\u5f53\u4e24\u4e2a\u6216\u591a\u4e2a\u4e3b\u8bbe\u5907\u540c\u65f6\u5c1d\u8bd5\u53d1\u8d77\u901a\u4fe1\u65f6&#xff0c;\u4ef2\u88c1\u8fc7\u7a0b\u5982\u4e0b&#xff1a;<\/p>\n<ul>\n<li>\u200c\u540c\u65f6\u542f\u52a8\u200c&#xff1a;\u5047\u8bbe\u4e3b\u8bbe\u5907A\u548c\u4e3b\u8bbe\u5907B\u540c\u65f6\u68c0\u6d4b\u5230\u603b\u7ebf\u7a7a\u95f2&#xff0c;\u5e76\u5f00\u59cb\u53d1\u9001\u5404\u81ea\u7684\u8d77\u59cb\u6761\u4ef6\u548c\u8bbe\u5907\u5730\u5740\u3002<\/li>\n<li>\u200c\u9010\u4f4d\u6bd4\u5bf9\u200c&#xff1a;\u5728\u6bcf\u4e00\u4e2a\u65f6\u949f\u5468\u671f&#xff08;SCL\u4e3a\u9ad8\u7535\u5e73\u65f6&#xff09;&#xff0c;\u4e24\u4e2a\u8bbe\u5907\u4f1a\u540c\u65f6\u5728SDA\u7ebf\u4e0a\u8f93\u51fa\u4e00\u4f4d\u6570\u636e&#xff0c;\u5e76\u7acb\u5373\u91c7\u6837SDA\u7ebf\u7684\u5b9e\u9645\u7535\u5e73\u3002<\/li>\n<li>\u200c\u4ef2\u88c1\u5931\u8d25\u5224\u5b9a\u200c&#xff1a;\u200c\u5982\u679c\u4e00\u4e2a\u8bbe\u5907\u8bd5\u56fe\u53d1\u9001\u903b\u8f91\u201c1\u201d&#xff08;\u5373\u91ca\u653eSDA&#xff0c;\u8ba9\u4e0a\u62c9\u7535\u963b\u62c9\u9ad8&#xff09;&#xff0c;\u4f46\u91c7\u6837\u5230\u7684\u603b\u7ebf\u7535\u5e73\u4e3a\u903b\u8f91\u201c0\u201d&#xff0c;\u5219\u8bf4\u660e\u6709\u53e6\u4e00\u4e2a\u8bbe\u5907\u6b63\u5728\u53d1\u9001\u903b\u8f91\u201c0\u201d\u5e76\u6210\u529f\u62c9\u4f4e\u4e86\u603b\u7ebf\u3002\u6b64\u65f6&#xff0c;\u8bd5\u56fe\u53d1\u9001\u201c1\u201d\u7684\u8bbe\u5907\u7acb\u5373\u5224\u5b9a\u4e3a\u4ef2\u88c1\u5931\u8d25\u3002\u200c\u200c12<\/li>\n<li>\u200c\u5931\u8d25\u65b9\u9000\u51fa\u200c&#xff1a;\u4ef2\u88c1\u5931\u8d25\u7684\u8bbe\u5907\u4f1a\u7acb\u5373\u505c\u6b62\u9a71\u52a8SCL\u548cSDA\u603b\u7ebf&#xff0c;\u8f6c\u4e3a\u76d1\u542c\u6a21\u5f0f&#xff0c;\u4e0d\u518d\u53d1\u9001\u4efb\u4f55\u65f6\u949f\u6216\u6570\u636e&#xff0c;\u4ee5\u907f\u514d\u5e72\u6270\u80dc\u51fa\u65b9\u7684\u901a\u4fe1\u3002\u200c1<\/li>\n<li>\u200c\u80dc\u51fa\u65b9\u7ee7\u7eed\u200c&#xff1a;\u4ef2\u88c1\u6210\u529f\u7684\u8bbe\u5907\u4f1a\u7ee7\u7eed\u5b8c\u6210\u5176\u5b8c\u6574\u7684\u901a\u4fe1\u8fc7\u7a0b&#xff08;\u53d1\u9001\u5730\u5740\u3001\u8bfb\u5199\u6570\u636e\u3001\u505c\u6b62\u6761\u4ef6\u7b49&#xff09;&#xff0c;\u6574\u4e2a\u8fc7\u7a0b\u5bf9\u80dc\u51fa\u65b9\u6765\u8bf4\u662f\u900f\u660e\u4e14\u65e0\u4e2d\u65ad\u7684\u3002\u200c1<\/li>\n<li>\u200c\u5931\u8d25\u65b9\u91cd\u8bd5\u200c&#xff1a;\u4ef2\u88c1\u5931\u8d25\u7684\u8bbe\u5907\u5728\u68c0\u6d4b\u5230\u603b\u7ebf\u518d\u6b21\u53d8\u4e3a\u7a7a\u95f2\u540e&#xff0c;\u53ef\u4ee5\u91cd\u65b0\u5c1d\u8bd5\u53d1\u8d77\u901a\u4fe1\u3002<\/li>\n<\/ul>\n<h4>\u901a\u4fe1\u901f\u7387<\/h4>\n<ul>\n<li>\u652f\u6301\u591a\u79cd\u901f\u7387&#xff0c;\u9002\u914d\u4e0d\u540c\u573a\u666f&#xff1a;\n<ul>\n<li>\u6807\u51c6\u901f\u7387&#xff1a;100KHZ&#xff08;\u6ee1\u8db3\u591a\u6570\u57fa\u672c\u63a7\u5236\u548c\u914d\u7f6e\u9700\u6c42&#xff09;<\/li>\n<li>\u5feb\u901f\u901f\u7387&#xff1a;400KHZ&#xff08;\u9002\u7528\u4e8e\u9ad8\u6027\u80fd\u5916\u56f4\u5668\u4ef6\u7684\u9ad8\u901f\u5e94\u7528\u573a\u666f&#xff09;<\/li>\n<\/ul>\n<\/li>\n<li>\u901a\u4fe1\u673a\u5236&#xff1a;\u534a\u53cc\u5de5&#xff0c;\u540c\u4e00\u65f6\u95f4\u4ec5\u80fd\u6267\u884c\u63a5\u6536\u6216\u53d1\u9001\u64cd\u4f5c&#xff0c;\u65e0\u6cd5\u53cc\u5411\u540c\u65f6\u4f20\u8f93<\/li>\n<li>\u9002\u7528\u573a\u666f&#xff1a;\u4fa7\u91cd\u63a7\u5236\u6307\u4ee4\u4f20\u8f93&#xff08;\u8bbe\u5907\u63a7\u5236\u3001\u4f20\u611f\u5668\u8bfb\u53d6\u3001\u914d\u7f6e\u7ba1\u7406&#xff09;&#xff0c;\u4e0d\u9002\u5408\u5927\u89c4\u6a21\u6570\u636e\u4ea4\u6362<\/li>\n<\/ul>\n<h4>\u901a\u4fe1\u8fc7\u7a0b\u4e0e\u65f6\u5e8f\u5206\u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\u8bfb\u5199\u63a7\u5236\u4f4d&#xff08;bit0&#061;0\u5199\u64cd\u4f5c&#xff0c;bit0&#061;1\u8bfb\u64cd\u4f5c&#xff09;<\/li>\n<li>\u4ece\u8bbe\u5907\u8bc6\u522b\u5730\u5740\u540e\u5e94\u7b54&#xff0c;\u4e3b\u673a\u5f00\u59cb\u4f20\u8f93\u6216\u63a5\u6536\u6570\u636e<\/li>\n<li>\u6570\u636e\u4f20\u8f93\u5b8c\u6210\u540e&#xff0c;\u4e3b\u673a\u751f\u6210\u505c\u6b62\u4fe1\u53f7&#xff0c;\u901a\u4fe1\u7ed3\u675f<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121728-69775b588c7c9.png\" alt=\"\u56fe\u724703\" \/><\/p>\n<p>\u7a7a\u95f2\u72b6\u6001<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121729-69775b596c0ec.png\" alt=\"\u56fe\u724705\" \/><\/p>\n<ul>\n<li>SCL\u65f6\u949f\u7ebf\u548cSDA\u6570\u636e\u7ebf\u5747\u4e3a\u9ad8\u7535\u5e73&#xff0c;\u7531IIC\u603b\u7ebf\u7684\u4e0a\u62c9\u7535\u963b\u62c9\u9ad8<\/li>\n<\/ul>\n<p>\u5f00\u59cb\u6761\u4ef6<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121729-69775b598f8e0.png\" alt=\"\u56fe\u724706\" \/><\/p>\n<ul>\n<li>SCL\u5904\u4e8e\u9ad8\u7535\u5e73\u671f\u95f4&#xff0c;\u5c06SDA\u6570\u636e\u7ebf\u7684\u7535\u5e73\u62c9\u4f4e&#xff0c;\u6807\u5fd7\u901a\u4fe1\u5f00\u59cb<\/li>\n<\/ul>\n<p>\u4f20\u8f93\u6570\u636e<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121729-69775b59b62fa.png\" alt=\"\u56fe\u724707\" \/><\/p>\n<ul>\n<li>\u65f6\u5e8f\u540c\u6b65\u65b9\u5f0f&#xff1a;IIC\u4ee5\u65f6\u949f\u8109\u51b2\u7684\u7535\u5e73\u8fdb\u884c\u540c\u6b65&#xff08;\u533a\u522b\u4e8eSPI\u7684\u8fb9\u6cbf\u540c\u6b65&#xff09;<\/li>\n<li>\u6570\u636e\u7a33\u5b9a\u6027\u8981\u6c42&#xff1a;\n<ul>\n<li>SCL\u4f4e\u7535\u5e73\u671f\u95f4&#xff1a;SDA\u53ef\u5207\u6362\u7535\u5e73&#xff08;\u51c6\u5907\u4e0b\u4e00\u4f4d\u6570\u636e&#xff09;<\/li>\n<li>SCL\u9ad8\u7535\u5e73\u671f\u95f4&#xff1a;SDA\u5fc5\u987b\u4fdd\u6301\u7a33\u5b9a&#xff08;\u786e\u4fdd\u6570\u636e\u53ef\u9760\u8bfb\u53d6&#xff09;<\/li>\n<\/ul>\n<\/li>\n<li>\u4f20\u8f93\u89c4\u5219&#xff1a;\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\u4f20\u8f93&#xff0c;MSB&#xff08;\u9ad8\u4f4d&#xff09;\u5728\u524d&#xff0c;\u9700\u6301\u7eed8\u4e2a\u65f6\u949f\u8109\u51b2<\/li>\n<\/ul>\n<p>\u5e94\u7b54\u6761\u4ef6<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121729-69775b59d7dab.png\" alt=\"\u56fe\u724708\" \/><\/p>\n<ul>\n<li>\u65f6\u5e8f\u4f4d\u7f6e&#xff1a;\u5b57\u8282\u4f20\u8f938\u4e2a\u65f6\u949f\u5468\u671f\u540e&#xff0c;\u7b2c9\u4e2a\u65f6\u949f\u8109\u51b2\u671f\u95f4<\/li>\n<li>\u5e94\u7b54\u6807\u5fd7&#xff1a;\u63a5\u6536\u65b9\u5c06SDA\u62c9\u4f4e\u8868\u793a\u5e94\u7b54&#xff08;ACK&#xff09;&#xff0c;\u4fdd\u6301\u9ad8\u7535\u5e73\u8868\u793a\u975e\u5e94\u7b54&#xff08;NACK&#xff09;<\/li>\n<li>\u63a7\u5236\u65b9\u5f0f&#xff1a;\u5e94\u7b54\u4f4d\u53ef\u901a\u8fc7\u8f6f\u4ef6\u4f7f\u80fd\u6216\u7981\u6b62<\/li>\n<\/ul>\n<p>\u505c\u6b62\u6761\u4ef6<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121730-69775b5a08e5d.png\" alt=\"\u56fe\u724709\" \/><\/p>\n<ul>\n<li>SCL\u5904\u4e8e\u9ad8\u7535\u5e73\u671f\u95f4&#xff0c;\u5c06SDA\u6570\u636e\u7ebf\u7684\u7535\u5e73\u62c9\u9ad8&#xff0c;\u6807\u5fd7\u901a\u4fe1\u7ed3\u675f<\/li>\n<\/ul>\n<h4>\u5668\u4ef6\u5730\u5740<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121730-69775b5a2679a.png\" alt=\"\u56fe\u7247010\" \/><\/p>\n<ul>\n<li>\u5e38\u89c4\u683c\u5f0f&#xff1a;7\u4f4d\u4e8c\u8fdb\u5236\u6570&#xff08;\u6570\u636e\u624b\u518c\u660e\u786e\u6807\u6ce8&#xff09;<\/li>\n<li>\u6269\u5c55\u683c\u5f0f&#xff1a;10\u4f4d\u4e8c\u8fdb\u5236\u6570&#xff08;\u9700\u5360\u7528\u4e24\u4e2a\u5b57\u8282\u4f20\u8f93&#xff09;<\/li>\n<li>\u5730\u5740\u7c7b\u578b&#xff1a;\u5305\u62ec\u8bbe\u5907\u81ea\u8eab\u5730\u5740\u548c\u5e7f\u64ad\u547c\u53eb\u5730\u5740&#xff08;\u5e7f\u64ad\u547c\u53eb\u5730\u5740\u68c0\u6d4b\u53ef\u901a\u8fc7\u8f6f\u4ef6\u4f7f\u80fd\/\u7981\u6b62&#xff09;<\/li>\n<li>\u4f5c\u7528&#xff1a;\u5b9e\u73b0\u591a\u8bbe\u5907\u8bc6\u522b&#xff0c;\u786e\u4fdd\u6570\u636e\u51c6\u786e\u4f20\u8f93\u5230\u76ee\u6807\u8bbe\u5907<\/li>\n<\/ul>\n<h4>\u65f6\u5e8f\u6a21\u62df<\/h4>\n<ul>\n<li>\u786c\u4ef6\u9650\u5236&#xff1a;MCU\u5185\u90e8\u786c\u4ef6IIC\u63a5\u53e3\u6570\u91cf\u6709\u9650&#xff08;\u5982\u90e8\u5206MCU\u4ec53\u4e2a&#xff09;<\/li>\n<li>\u4e24\u79cd\u5b9e\u73b0\u65b9\u5f0f&#xff1a;\n<ul>\n<li>\u786c\u4ef6IIC&#xff1a;\u4f7f\u7528\u4e13\u7528IIC\u5f15\u811a&#xff0c;\u9700\u590d\u7528\u5f15\u811a\u529f\u80fd\u5e76\u914d\u7f6e\u521d\u59cb\u5316<\/li>\n<li>IO\u53e3\u6a21\u62dfIIC&#xff1a;\u901a\u8fc7\u666e\u901aIO\u53e3\u6a21\u62dfIIC\u65f6\u5e8f&#xff0c;\u4e0d\u53d7\u786c\u4ef6\u63a5\u53e3\u6570\u91cf\u9650\u5236&#xff0c;\u53ef\u79fb\u690d\u6027\u66f4\u9ad8<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u4ee3\u7801&#xff08;\u6b64\u5904\u4e3a\u4e86\u7406\u89e3\u65f6\u5e8f&#xff0c;\u5f15\u811a\u914d\u7f6e\u4e3a\u63a8\u633d&#xff0c;\u5b9e\u9645\u8981\u914d\u7f6e\u4e3a\u5f00\u6f0f&#xff09;<\/p>\n<p><span class=\"token comment\">\/* Private define &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;*\/<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5f15\u811a\u5b9a\u4e49 \u81ea\u884c\u9009\u62e9\u8981\u7528\u7684\u5f15\u811a \u6b64\u5904\u4e0d\u505a\u5b9a\u4e49<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">IIC_SDA_PIN<\/span>                        <\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">IIC_SDA_GPIO_PORT<\/span>                  <\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">IIC_SDA_GPIO_CLK<\/span>                   <\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">IIC_SCL_PIN<\/span>                        <\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">IIC_SCL_GPIO_PORT<\/span>                  <\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">IIC_SCL_GPIO_CLK<\/span>                   <\/span><\/p>\n<p><span class=\"token comment\">\/\/ IIC\u5f15\u811a\u7535\u5e73\u64cd\u4f5c<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">IIC_SDA_LOW<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>       <span class=\"token function\">GPIO_ResetBits<\/span><span class=\"token punctuation\">(<\/span>IIC_SDA_GPIO_PORT<span class=\"token punctuation\">,<\/span> IIC_SDA_PIN<span class=\"token punctuation\">)<\/span><\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">IIC_SDA_HIGH<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>      <span class=\"token function\">GPIO_SetBits<\/span><span class=\"token punctuation\">(<\/span>IIC_SDA_GPIO_PORT<span class=\"token punctuation\">,<\/span> IIC_SDA_PIN<span class=\"token punctuation\">)<\/span>   <\/span><\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">IIC_SCL_LOW<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>       <span class=\"token function\">GPIO_ResetBits<\/span><span class=\"token punctuation\">(<\/span>IIC_SCL_GPIO_PORT<span class=\"token punctuation\">,<\/span> IIC_SCL_PIN<span class=\"token punctuation\">)<\/span><\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">IIC_SCL_HIGH<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>      <span class=\"token function\">GPIO_SetBits<\/span><span class=\"token punctuation\">(<\/span>IIC_SCL_GPIO_PORT<span class=\"token punctuation\">,<\/span> IIC_SCL_PIN<span class=\"token punctuation\">)<\/span>   <\/span><\/span><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name function\">IIC_SDA_READ<\/span><span class=\"token expression\"><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>      <span class=\"token function\">GPIO_ReadInputDataBit<\/span><span class=\"token punctuation\">(<\/span>IIC_SDA_GPIO_PORT<span class=\"token punctuation\">,<\/span> IIC_SDA_PIN<span class=\"token punctuation\">)<\/span><\/span><\/span><\/p>\n<p><span class=\"token comment\">\/* Private functions &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;*\/<\/span><br \/>\n<span class=\"token comment\">\/**<br \/>\n  * &#064;brief  IIC\u5e95\u5c42GPIO\u521d\u59cb\u5316<br \/>\n  * &#064;param  None<br \/>\n  * &#064;retval None<br \/>\n  *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">IIC_LowLevel_Init<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n  GPIO_InitTypeDef GPIO_InitStructure<span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u4f7f\u80fdGPIO\u65f6\u949f<\/span><br \/>\n  <span class=\"token function\">RCC_AHB1PeriphClockCmd<\/span><span class=\"token punctuation\">(<\/span>IIC_SDA_GPIO_CLK <span class=\"token operator\">|<\/span> IIC_SCL_GPIO_CLK <span class=\"token punctuation\">,<\/span> ENABLE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ IIC\u5f15\u811a\u914d\u7f6e&#xff08;\u63a8\u633d\u8f93\u51fa&#043;\u4e0a\u62c9&#xff0c;\u7b26\u5408IIC\u603b\u7ebf\u89c4\u8303&#xff09;<\/span><br \/>\n  GPIO_InitStructure<span class=\"token punctuation\">.<\/span>GPIO_Mode  <span class=\"token operator\">&#061;<\/span> GPIO_Mode_OUT<span class=\"token punctuation\">;<\/span><br \/>\n  GPIO_InitStructure<span class=\"token punctuation\">.<\/span>GPIO_Speed <span class=\"token operator\">&#061;<\/span> GPIO_Speed_50MHz<span class=\"token punctuation\">;<\/span><br \/>\n  GPIO_InitStructure<span class=\"token punctuation\">.<\/span>GPIO_OType <span class=\"token operator\">&#061;<\/span> GPIO_OType_PP<span class=\"token punctuation\">;<\/span><br \/>\n  GPIO_InitStructure<span class=\"token punctuation\">.<\/span>GPIO_PuPd  <span class=\"token operator\">&#061;<\/span> GPIO_PuPd_UP<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u4e0a\u62c9<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ SDA\u5f15\u811a\u914d\u7f6e<\/span><br \/>\n  GPIO_InitStructure<span class=\"token punctuation\">.<\/span>GPIO_Pin <span class=\"token operator\">&#061;<\/span> IIC_SDA_PIN<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token function\">GPIO_Init<\/span><span class=\"token punctuation\">(<\/span>IIC_SDA_GPIO_PORT<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>GPIO_InitStructure<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ SCL\u5f15\u811a\u914d\u7f6e<\/span><br \/>\n  GPIO_InitStructure<span class=\"token punctuation\">.<\/span>GPIO_Pin <span class=\"token operator\">&#061;<\/span> IIC_SCL_PIN<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token function\">GPIO_Init<\/span><span class=\"token punctuation\">(<\/span>IIC_SCL_GPIO_PORT<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>GPIO_InitStructure<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ \u603b\u7ebf\u7a7a\u95f2\u72b6\u6001&#xff1a;SDA\/SCL\u5747\u4e3a\u9ad8<\/span><br \/>\n  <span class=\"token function\">IIC_SDA_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token function\">IIC_SCL_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u521d\u59cb\u5ef6\u65f6<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n  * &#064;brief  IIC SDA\u5f15\u811a\u6a21\u5f0f\u5207\u6362&#xff08;\u8f93\u51fa\/\u8f93\u5165&#xff09;<br \/>\n  * &#064;param  Mode: \u5f15\u811a\u6a21\u5f0f&#xff08;GPIO_Mode_OUT\/GPIO_Mode_IN&#xff09;<br \/>\n  * &#064;retval None<br \/>\n  *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">IIC_SDAPinModeSet<\/span><span class=\"token punctuation\">(<\/span>GPIOMode_TypeDef Mode<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    GPIO_InitTypeDef GPIO_InitStructure<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">RCC_AHB1PeriphClockCmd<\/span><span class=\"token punctuation\">(<\/span>IIC_SDA_GPIO_CLK<span class=\"token punctuation\">,<\/span> ENABLE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    GPIO_InitStructure<span class=\"token punctuation\">.<\/span>GPIO_Mode  <span class=\"token operator\">&#061;<\/span> Mode<span class=\"token punctuation\">;<\/span><br \/>\n    GPIO_InitStructure<span class=\"token punctuation\">.<\/span>GPIO_Speed <span class=\"token operator\">&#061;<\/span> GPIO_Speed_50MHz<span class=\"token punctuation\">;<\/span><br \/>\n    GPIO_InitStructure<span class=\"token punctuation\">.<\/span>GPIO_OType <span class=\"token operator\">&#061;<\/span> GPIO_OType_PP<span class=\"token punctuation\">;<\/span><br \/>\n    GPIO_InitStructure<span class=\"token punctuation\">.<\/span>GPIO_PuPd  <span class=\"token operator\">&#061;<\/span> GPIO_PuPd_UP<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u4e0a\u62c9<\/span><\/p>\n<p>    GPIO_InitStructure<span class=\"token punctuation\">.<\/span>GPIO_Pin <span class=\"token operator\">&#061;<\/span> IIC_SDA_PIN<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">GPIO_Init<\/span><span class=\"token punctuation\">(<\/span>IIC_SDA_GPIO_PORT<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>GPIO_InitStructure<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n  * &#064;brief  IIC\u8d77\u59cb\u4fe1\u53f7&#xff08;SCL\u9ad8\u65f6&#xff0c;SDA\u4ece\u9ad8\u62c9\u4f4e&#xff09;<br \/>\n  * &#064;param  None<br \/>\n  * &#064;retval None<br \/>\n  *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">IIC_Start<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">IIC_SDAPinModeSet<\/span><span class=\"token punctuation\">(<\/span>GPIO_Mode_OUT<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SDA_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">IIC_SCL_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u65f6\u5e8f\u5ef6\u65f6&#xff0c;\u4fdd\u8bc1\u603b\u7ebf\u7a33\u5b9a<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SDA_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SCL_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n  * &#064;brief  IIC\u505c\u6b62\u4fe1\u53f7&#xff08;SCL\u9ad8\u65f6&#xff0c;SDA\u4ece\u4f4e\u62c9\u9ad8&#xff09;<br \/>\n  * &#064;param  None<br \/>\n  * &#064;retval None<br \/>\n  *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">IIC_Stop<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">IIC_SDAPinModeSet<\/span><span class=\"token punctuation\">(<\/span>GPIO_Mode_OUT<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SCL_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">IIC_SDA_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SCL_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SDA_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n  * &#064;brief  IIC\u53d1\u90011\u5b57\u8282\u6570\u636e&#xff08;MSB\u5148\u884c&#xff09;<br \/>\n  * &#064;param  byte: \u5f85\u53d1\u9001\u5b57\u8282<br \/>\n  * &#064;retval None<br \/>\n  *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">IIC_Send<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint8_t<\/span> byte<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">uint8_t<\/span> cnt <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">IIC_SDAPinModeSet<\/span><span class=\"token punctuation\">(<\/span>GPIO_Mode_OUT<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span>cnt<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> cnt<span class=\"token operator\">&lt;<\/span><span class=\"token number\">8<\/span><span class=\"token punctuation\">;<\/span> cnt<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">IIC_SCL_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u8f93\u51fa\u5f53\u524d\u4f4d&#xff08;\u6700\u9ad8\u4f4d\u5148\u884c&#xff09;<\/span><br \/>\n        <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>byte <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0x80<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token function\">IIC_SDA_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">else<\/span><br \/>\n            <span class=\"token function\">IIC_SDA_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        byte <span class=\"token operator\">&lt;&lt;&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token function\">IIC_SCL_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SCL_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n  * &#064;brief  \u68c0\u6d4bIIC\u4ece\u673a\u5e94\u7b54<br \/>\n  * &#064;param  None<br \/>\n  * &#064;retval true: \u5e94\u7b54\u6210\u529f  false: \u65e0\u5e94\u7b54<br \/>\n  *\/<\/span><br \/>\nbool <span class=\"token function\">IIC_IsACK<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    bool status <span class=\"token operator\">&#061;<\/span> false<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SDAPinModeSet<\/span><span class=\"token punctuation\">(<\/span>GPIO_Mode_IN<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u5207\u6362\u4e3a\u8f93\u5165\u6a21\u5f0f\u8bfb\u5e94\u7b54<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SCL_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SCL_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u4ece\u673a\u5e94\u7b54&#xff1a;SDA\u62c9\u4f4e<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token function\">IIC_SDA_READ<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        status <span class=\"token operator\">&#061;<\/span> true<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">else<\/span><br \/>\n        status <span class=\"token operator\">&#061;<\/span> false<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SCL_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> status<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n  * &#064;brief  \u4e3b\u673a\u53d1\u9001\u5e94\u7b54\/\u975e\u5e94\u7b54<br \/>\n  * &#064;param  ack: 0&#061;\u5e94\u7b54  1&#061;\u975e\u5e94\u7b54<br \/>\n  * &#064;retval None<br \/>\n  *\/<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">IIC_SendAck<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">uint8_t<\/span> ack<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">IIC_SDAPinModeSet<\/span><span class=\"token punctuation\">(<\/span>GPIO_Mode_OUT<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SCL_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>ack<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token function\">IIC_SDA_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u975e\u5e94\u7b54<\/span><br \/>\n    <span class=\"token keyword\">else<\/span><br \/>\n        <span class=\"token function\">IIC_SDA_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/\/ \u5e94\u7b54<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SCL_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SCL_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/**<br \/>\n  * &#064;brief  IIC\u8bfb\u53d61\u5b57\u8282\u6570\u636e&#xff08;MSB\u5148\u884c&#xff09;<br \/>\n  * &#064;param  None<br \/>\n  * &#064;retval \u8bfb\u53d6\u5230\u7684\u5b57\u8282<br \/>\n  *\/<\/span><br \/>\n<span class=\"token class-name\">uint8_t<\/span> <span class=\"token function\">IIC_Read<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">void<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">uint8_t<\/span> cnt  <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token class-name\">uint8_t<\/span> data <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SDAPinModeSet<\/span><span class=\"token punctuation\">(<\/span>GPIO_Mode_IN<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span>cnt<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> cnt<span class=\"token operator\">&lt;<\/span><span class=\"token number\">8<\/span><span class=\"token punctuation\">;<\/span> cnt<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">IIC_SCL_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token function\">IIC_SCL_HIGH<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        data <span class=\"token operator\">&lt;&lt;&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        data <span class=\"token operator\">|&#061;<\/span> <span class=\"token function\">IIC_SDA_READ<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u8bfb\u53d6\u5f53\u524d\u4f4d<\/span><br \/>\n        <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token function\">IIC_SCL_LOW<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">delay_us<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> data<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h3>OLED\u5c4f\u7684\u539f\u7406\u4e0e\u5e94\u7528<\/h3>\n<h4>\u57fa\u672c\u6982\u5ff5<\/h4>\n<ul>\n<li>\u82f1\u6587\u5168\u79f0Organic Light Emitting Diode&#xff08;\u6709\u673a\u53d1\u5149\u4e8c\u6781\u7ba1&#xff09;<\/li>\n<li>\u6838\u5fc3\u7279\u6027&#xff1a;\u81ea\u53d1\u5149&#xff08;\u65e0\u9700\u80cc\u5149&#xff09;\u3001\u5bf9\u6bd4\u5ea6\u9ad8\u3001\u539a\u5ea6\u8584\u3001\u89c6\u89d2\u5e7f\u3001\u53cd\u5e94\u901f\u5ea6\u5feb\u3001\u53ef\u6320\u66f2\u3001\u4f7f\u7528\u6e29\u5ea6\u8303\u56f4\u5e7f\u3001\u6784\u9020\u53ca\u5236\u7a0b\u7b80\u5355<\/li>\n<li>0.96\u5bf8OLED\u5c4f\u5173\u952e\u53c2\u6570&#xff1a;\n<ul>\n<li>\u5206\u8fa8\u7387&#xff1a;128*64<\/li>\n<li>\u989c\u8272\u9009\u9879&#xff1a;\u9ec4\u84dd&#xff08;1\/4\u9ec4\u5149&#043;3\/4\u84dd\u5149&#xff0c;\u56fa\u5b9a\u533a\u57df&#xff09;\u3001\u7eaf\u767d&#xff08;\u9ed1\u5e95\u767d\u5b57&#xff09;\u3001\u7eaf\u84dd&#xff08;\u9ed1\u5e95\u84dd\u5b57&#xff09;<\/li>\n<li>\u63a5\u53e3\u65b9\u5f0f&#xff1a;5\u79cd&#xff08;6800\u5e76\u884c\u30018080\u5e76\u884c\u30013\u7ebfSPI\u30014\u7ebfSPI\u3001IIC&#xff09;&#xff0c;\u901a\u8fc7\u5c4f\u4e0aBS0~BS2\u5f15\u811a\u914d\u7f6e<\/li>\n<li>\u6a21\u5757\u7c7b\u578b&#xff1a;\u4e03\u9488SPI\/IIC\u517c\u5bb9\u6a21\u5757\u3001\u56db\u9488IIC\u6a21\u5757<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>\u9a71\u52a8\u82af\u7247<\/h4>\n<ul>\n<li>\n<p>\u4e3b\u6d41\u82af\u7247&#xff1a;SSD1306&#xff08;\u672c\u5c4f\u6240\u7528&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u6838\u5fc3\u7279\u70b9&#xff1a;\u5185\u7f6e\u5347\u538b\u529f\u80fd&#xff0c;\u65e0\u9700\u989d\u5916\u8bbe\u8ba1\u5347\u538b\u7535\u8def&#xff08;\u4e5f\u652f\u6301\u5916\u90e8\u5347\u538b&#xff0c;\u53c2\u8003\u6570\u636e\u624b\u518c&#xff09;<\/p>\n<\/li>\n<li>\n<p>\u5b58\u50a8\u7ed3\u6784&#xff1a;\u6bcf\u9875128\u5b57\u8282&#xff0c;\u51718\u9875&#xff0c;\u521a\u597d\u5339\u914d128**64\u70b9\u9635*<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121730-69775b5a3cb35.png\" alt=\"image\" \/><\/p>\n<\/li>\n<li>\n<p>\u4e0eSSD1106\u7684\u533a\u522b&#xff1a;<\/p>\n<ul>\n<li>SSD1106\u6bcf\u9875132\u5b57\u8282&#xff0c;\u51718\u9875<\/li>\n<li>\u79fb\u690d\u6ce8\u610f&#xff1a;\u75280.96\u5bf8OLED\u79fb\u690d1.3\u5bf8&#xff08;SSD1106&#xff09;\u7a0b\u5e8f\u65f6&#xff0c;\u9700\u5c06\u663e\u793a\u5730\u5740\u5411\u53f3\u504f\u79fb2&#xff0c;\u5426\u5219\u53f3\u4fa74\u4e2a\u50cf\u7d20\u70b9\u663e\u793a\u5f02\u5e38<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>\u5668\u4ef6\u5730\u5740<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121730-69775b5a580a1.png\" alt=\"\u56fe\u7247011\" \/><\/p>\n<ul>\n<li>IIC\u4ece\u8bbe\u5907\u5730\u5740&#xff1a;\u9ed8\u8ba40x78&#xff08;7\u4f4d\u5730\u5740&#xff09;<\/li>\n<li>\u5730\u5740\u6784\u6210&#xff1a;011110 &#043; SA0 &#043; R\/W#\n<ul>\n<li>SA0\u4f4d&#xff1a;\u5730\u5740\u6269\u5c55\u4f4d&#xff0c;\u53ef\u9009\u62e90111100&#xff08;0x78&#xff09;\u62160111101&#xff08;0x79&#xff09;&#xff0c;\u7531D\/C#\u5f15\u811a\u63a7\u5236<\/li>\n<li>R\/W#\u4f4d&#xff1a;\u64cd\u4f5c\u6a21\u5f0f\u9009\u62e9&#xff0c;R\/W#&#061;1\u4e3a\u8bfb\u6a21\u5f0f&#xff0c;R\/W#&#061;0\u4e3a\u5199\u6a21\u5f0f<\/li>\n<\/ul>\n<\/li>\n<li>\u786c\u4ef6\u8981\u6c42&#xff1a;SDA\u548cSCL\u5f15\u811a\u9700\u8fde\u63a5\u4e0a\u62c9\u7535\u963b<\/li>\n<\/ul>\n<h4>\u786c\u4ef6\u63a5\u7ebf<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260126121730-69775b5af3fc2.png\" alt=\"\u56fe\u7247012\" 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