{"id":10021248,"date":"2026-02-14T10:47:11","date_gmt":"2026-02-14T02:47:11","guid":{"rendered":"https:\/\/itmax.cn\/?p=10021248"},"modified":"2026-02-14T10:47:11","modified_gmt":"2026-02-14T02:47:11","slug":"12c%e6%80%bb%e7%ba%bf%e5%92%8c%e5%8d%8f%e8%ae%ae","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10021248","title":{"rendered":"12C\u603b\u7ebf\u548c\u534f\u8bae"},"content":{"rendered":"<p>\u5927\u5bb6\u597d\uff0c\u6211\u662f\u826f\u8bb8\u3002<\/p>\n<p>\u5728\u5d4c\u5165\u5f0f\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u8ba9\u4e3b\u63a7\u82af\u7247\u4e0e\u5404\u79cd\u5916\u8bbe\u8fdb\u884c\u901a\u4fe1\uff0c\u6bd4\u5982\u8bfb\u53d6\u6e29\u6e7f\u5ea6\u4f20\u611f\u5668\u7684\u6570\u636e\u3001\u63a7\u5236 OLED \u663e\u793a\u5c4f\u663e\u793a\u5185\u5bb9\u3001\u8bfb\u5199 EEPROM \u5b58\u50a8\u5668\u7b49\u7b49\u3002<\/p>\n<p>\u8fd9\u65f6\u5019\u5c31\u9700\u8981\u7528\u5230\u5404\u79cd\u901a\u4fe1\u534f\u8bae\uff0c\u800c I2C \u603b\u7ebf\u5c31\u662f\u5176\u4e2d\u6700\u5e38\u7528\u7684\u4e00\u79cd\u3002<\/p>\n<p>\u6211\u521a\u5165\u884c\u505a\u5355\u7247\u673a\u5f00\u53d1\u7684\u65f6\u5019\uff0c\u7b2c\u4e00\u4e2a\u63a5\u89e6\u7684\u901a\u4fe1\u534f\u8bae\u5c31\u662f I2C\uff0c\u5f53\u65f6\u7528 STM32 \u8bfb\u53d6\u4e00\u4e2a\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u867d\u7136\u4ee3\u7801\u4e0d\u591a\uff0c\u4f46\u7406\u89e3\u5176\u5de5\u4f5c\u539f\u7406\u8fd8\u662f\u82b1\u4e86\u4e0d\u5c11\u65f6\u95f4\u3002<\/p>\n<p>\u4eca\u5929\u5c31\u548c\u5927\u5bb6\u8be6\u7ec6\u804a\u804a I2C \u603b\u7ebf\u7684\u65b9\u65b9\u9762\u9762\u3002<\/p>\n<h2>1. I2C \u603b\u7ebf\u57fa\u7840\u77e5\u8bc6<\/h2>\n<h3>1.1 \u4ec0\u4e48\u662f I2C \u603b\u7ebf<\/h3>\n<p>I2C \u603b\u7ebf\u662f\u7531\u98de\u5229\u6d66\u516c\u53f8\uff08\u73b0\u5728\u7684 NXP\uff09\u5728 1980 \u5e74\u4ee3\u5f00\u53d1\u7684\u4e00\u79cd\u4e32\u884c\u901a\u4fe1\u603b\u7ebf\u3002<\/p>\n<p>\u5b83\u6700\u5927\u7684\u7279\u70b9\u5c31\u662f\u53ea\u9700\u8981\u4e24\u6839\u4fe1\u53f7\u7ebf\u5c31\u80fd\u5b9e\u73b0\u591a\u4e2a\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u8fd9\u4e24\u6839\u7ebf\u5206\u522b\u662f SDA\uff08Serial Data Line\uff0c\u4e32\u884c\u6570\u636e\u7ebf\uff09\u548c SCL\uff08Serial Clock Line\uff0c\u4e32\u884c\u65f6\u949f\u7ebf\uff09\u3002<\/p>\n<p>\u76f8\u6bd4\u4e8e\u5e76\u884c\u603b\u7ebf\u9700\u8981 8 \u6839\u300116 \u6839\u751a\u81f3\u66f4\u591a\u7684\u6570\u636e\u7ebf\uff0cI2C \u603b\u7ebf\u5927\u5927\u8282\u7701\u4e86\u82af\u7247\u7684\u5f15\u811a\u8d44\u6e90\u548c PCB \u677f\u7684\u5e03\u7ebf\u7a7a\u95f4\u3002<\/p>\n<p>I2C \u603b\u7ebf\u91c7\u7528\u4e3b\u4ece\u6a21\u5f0f\uff08Master-Slave\uff09\uff0c\u901a\u4fe1\u8fc7\u7a0b\u4e2d\u5fc5\u987b\u6709\u4e00\u4e2a\u4e3b\u8bbe\u5907\u6765\u63a7\u5236\u603b\u7ebf\uff0c\u4ece\u8bbe\u5907\u53ea\u80fd\u88ab\u52a8\u54cd\u5e94\u3002<\/p>\n<p>\u4e3b\u8bbe\u5907\u8d1f\u8d23\u4ea7\u751f\u65f6\u949f\u4fe1\u53f7\u548c\u53d1\u8d77\u901a\u4fe1\uff0c\u4ece\u8bbe\u5907\u5219\u6839\u636e\u81ea\u5df1\u7684\u5730\u5740\u6765\u5224\u65ad\u662f\u5426\u9700\u8981\u54cd\u5e94\u3002<\/p>\n<p>\u4e00\u6761 I2C \u603b\u7ebf\u4e0a\u53ef\u4ee5\u6302\u8f7d\u591a\u4e2a\u4e3b\u8bbe\u5907\u548c\u591a\u4e2a\u4ece\u8bbe\u5907\uff0c\u7406\u8bba\u4e0a\u6700\u591a\u53ef\u4ee5\u8fde\u63a5 128 \u4e2a\u8bbe\u5907\uff087 \u4f4d\u5730\u5740\u6a21\u5f0f\uff09\u6216 1024 \u4e2a\u8bbe\u5907\uff0810 \u4f4d\u5730\u5740\u6a21\u5f0f\uff09\u3002<\/p>\n<h3>1.2 I2C \u603b\u7ebf\u7684\u786c\u4ef6\u8fde\u63a5<\/h3>\n<p>I2C \u603b\u7ebf\u7684\u786c\u4ef6\u8fde\u63a5\u975e\u5e38\u7b80\u5355\u3002<\/p>\n<p>SDA \u548c SCL \u90fd\u662f\u5f00\u6f0f\u8f93\u51fa\uff08Open-Drain\uff09\u6216\u5f00\u96c6\u8f93\u51fa\uff08Open-Collector\uff09\uff0c\u9700\u8981\u5916\u63a5\u4e0a\u62c9\u7535\u963b\u5230\u7535\u6e90\u3002<\/p>\n<p>\u5178\u578b\u7684\u4e0a\u62c9\u7535\u963b\u963b\u503c\u5728 1k\u03a9 \u5230 10k\u03a9 \u4e4b\u95f4\uff0c\u5177\u4f53\u53d6\u503c\u8981\u6839\u636e\u603b\u7ebf\u7535\u5bb9\u8d1f\u8f7d\u548c\u901a\u4fe1\u901f\u7387\u6765\u786e\u5b9a\u3002<\/p>\n<p>\u603b\u7ebf\u7535\u5bb9\u8d8a\u5927\u3001\u901f\u7387\u8d8a\u9ad8\uff0c\u4e0a\u62c9\u7535\u963b\u5c31\u8981\u9009\u5f97\u8d8a\u5c0f\u3002<\/p>\n<p>\u5f00\u6f0f\u8f93\u51fa\u7684\u7279\u70b9\u662f\u53ea\u80fd\u4e3b\u52a8\u62c9\u4f4e\u7535\u5e73\uff0c\u4e0d\u80fd\u4e3b\u52a8\u62c9\u9ad8\u7535\u5e73\uff0c\u91ca\u653e\u603b\u7ebf\u540e\u4f9d\u9760\u4e0a\u62c9\u7535\u963b\u5c06\u7535\u5e73\u62c9\u9ad8\u3002<\/p>\n<p>\u8fd9\u79cd\u8bbe\u8ba1\u6709\u4e24\u4e2a\u597d\u5904\uff1a\u4e00\u662f\u5141\u8bb8\u591a\u4e2a\u8bbe\u5907\u8fde\u63a5\u5230\u540c\u4e00\u6761\u603b\u7ebf\u4e0a\u800c\u4e0d\u4f1a\u53d1\u751f\u7535\u6c14\u51b2\u7a81\uff0c\u4e8c\u662f\u53ef\u4ee5\u5b9e\u73b0\u4e0d\u540c\u7535\u538b\u7b49\u7ea7\u8bbe\u5907\u4e4b\u95f4\u7684\u901a\u4fe1\uff08\u901a\u8fc7\u9009\u62e9\u5408\u9002\u7684\u4e0a\u62c9\u7535\u538b\uff09\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u6211\u66fe\u7ecf\u9047\u5230\u8fc7\u4e00\u4e2a\u95ee\u9898\uff1aI2C \u901a\u4fe1\u65f6\u597d\u65f6\u574f\uff0c\u6ce2\u5f62\u4e5f\u4e0d\u592a\u6b63\u5e38\u3002<\/p>\n<p>\u540e\u6765\u53d1\u73b0\u662f\u4e0a\u62c9\u7535\u963b\u9009\u5f97\u592a\u5927\u4e86\uff08\u7528\u7684\u662f 10k\u03a9\uff09\uff0c\u603b\u7ebf\u7535\u5bb9\u8d1f\u8f7d\u6bd4\u8f83\u5927\uff0c\u5bfc\u81f4\u4fe1\u53f7\u4e0a\u5347\u6cbf\u592a\u6162\u3002<\/p>\n<p>\u6362\u6210 2.2k\u03a9 \u7684\u7535\u963b\u540e\u95ee\u9898\u5c31\u89e3\u51b3\u4e86\u3002<\/p>\n<p>\u6240\u4ee5\u786c\u4ef6\u8bbe\u8ba1\u65f6\u4e00\u5b9a\u8981\u6ce8\u610f\u8fd9\u4e2a\u7ec6\u8282\u3002<\/p>\n<h3>1.3 I2C \u603b\u7ebf\u7684\u901f\u7387\u6a21\u5f0f<\/h3>\n<p>I2C \u603b\u7ebf\u5b9a\u4e49\u4e86\u51e0\u79cd\u4e0d\u540c\u7684\u901f\u7387\u6a21\u5f0f\uff1a<\/p>\n<p>\u6807\u51c6\u6a21\u5f0f\uff08Standard Mode\uff09\uff1a\u65f6\u949f\u9891\u7387\u6700\u9ad8 100kHz\uff0c\u8fd9\u662f\u6700\u65e9\u7684 I2C \u6807\u51c6\uff0c\u73b0\u5728\u5f88\u591a\u4f4e\u901f\u5916\u8bbe\u4ecd\u7136\u4f7f\u7528\u8fd9\u4e2a\u901f\u7387\u3002<\/p>\n<p>\u5feb\u901f\u6a21\u5f0f\uff08Fast Mode\uff09\uff1a\u65f6\u949f\u9891\u7387\u6700\u9ad8 400kHz\uff0c\u662f\u76ee\u524d\u6700\u5e38\u7528\u7684\u901f\u7387\u6a21\u5f0f\uff0c\u80fd\u591f\u6ee1\u8db3\u5927\u90e8\u5206\u5e94\u7528\u573a\u666f\u7684\u9700\u6c42\u3002<\/p>\n<p>\u5feb\u901f\u6a21\u5f0f\u589e\u5f3a\u7248\uff08Fast Mode Plus\uff09\uff1a\u65f6\u949f\u9891\u7387\u6700\u9ad8 1MHz\uff0c\u7528\u4e8e\u5bf9\u901f\u5ea6\u8981\u6c42\u8f83\u9ad8\u7684\u573a\u5408\u3002<\/p>\n<p>\u9ad8\u901f\u6a21\u5f0f\uff08High Speed Mode\uff09\uff1a\u65f6\u949f\u9891\u7387\u6700\u9ad8 3.4MHz\uff0c\u9700\u8981\u7279\u6b8a\u7684\u786c\u4ef6\u652f\u6301\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\u6bd4\u8f83\u5c11\u89c1\u3002<\/p>\n<p>\u8d85\u5feb\u901f\u6a21\u5f0f\uff08Ultra Fast Mode\uff09\uff1a\u65f6\u949f\u9891\u7387\u6700\u9ad8 5MHz\uff0c\u8fd9\u662f\u6700\u65b0\u7684\u6807\u51c6\uff0c\u76ee\u524d\u652f\u6301\u7684\u8bbe\u5907\u8fd8\u4e0d\u591a\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u6700\u5e38\u7528\u7684\u662f\u6807\u51c6\u6a21\u5f0f\u548c\u5feb\u901f\u6a21\u5f0f\u3002<\/p>\n<p>\u9009\u62e9\u54ea\u79cd\u901f\u7387\u4e3b\u8981\u770b\u5916\u8bbe\u82af\u7247\u7684\u652f\u6301\u60c5\u51b5\u548c\u5b9e\u9645\u9700\u6c42\u3002<\/p>\n<p>\u5982\u679c\u53ea\u662f\u8bfb\u53d6\u4e00\u4e2a\u6e29\u5ea6\u4f20\u611f\u5668\uff0c\u6807\u51c6\u6a21\u5f0f\u5b8c\u5168\u591f\u7528\uff1b\u5982\u679c\u8981\u9a71\u52a8\u4e00\u4e2a OLED \u663e\u793a\u5c4f\uff0c\u53ef\u80fd\u5c31\u9700\u8981\u7528\u5230\u5feb\u901f\u6a21\u5f0f\u6765\u63d0\u9ad8\u5237\u65b0\u901f\u5ea6\u3002<\/p>\n<h2>2. I2C \u901a\u4fe1\u534f\u8bae\u8be6\u89e3<\/h2>\n<h3>2.1 \u8d77\u59cb\u548c\u505c\u6b62\u6761\u4ef6<\/h3>\n<p>I2C \u901a\u4fe1\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u90fd\u6709\u7279\u5b9a\u7684\u4fe1\u53f7\u6807\u5fd7\u3002<\/p>\n<p>\u8d77\u59cb\u6761\u4ef6\uff08Start Condition\uff09\u662f\u6307\u5728 SCL \u4e3a\u9ad8\u7535\u5e73\u671f\u95f4\uff0cSDA \u7531\u9ad8\u7535\u5e73\u53d8\u4e3a\u4f4e\u7535\u5e73\u3002<\/p>\n<p>\u505c\u6b62\u6761\u4ef6\uff08Stop Condition\uff09\u662f\u6307\u5728 SCL \u4e3a\u9ad8\u7535\u5e73\u671f\u95f4\uff0cSDA \u7531\u4f4e\u7535\u5e73\u53d8\u4e3a\u9ad8\u7535\u5e73\u3002<\/p>\n<p>\u8fd9\u4e24\u4e2a\u6761\u4ef6\u975e\u5e38\u91cd\u8981\uff0c\u5b83\u4eec\u5b9a\u4e49\u4e86\u4e00\u6b21\u5b8c\u6574\u901a\u4fe1\u7684\u8fb9\u754c\u3002<\/p>\n<p>\u4e3b\u8bbe\u5907\u5728\u53d1\u8d77\u901a\u4fe1\u524d\u5fc5\u987b\u5148\u53d1\u9001\u8d77\u59cb\u6761\u4ef6\uff0c\u901a\u4fe1\u7ed3\u675f\u540e\u5fc5\u987b\u53d1\u9001\u505c\u6b62\u6761\u4ef6\u3002<\/p>\n<p>\u4ece\u8bbe\u5907\u901a\u8fc7\u68c0\u6d4b\u8d77\u59cb\u6761\u4ef6\u6765\u77e5\u9053\u901a\u4fe1\u5f00\u59cb\u4e86\uff0c\u901a\u8fc7\u68c0\u6d4b\u505c\u6b62\u6761\u4ef6\u6765\u77e5\u9053\u901a\u4fe1\u7ed3\u675f\u4e86\u3002<\/p>\n<p>\u8fd8\u6709\u4e00\u79cd\u7279\u6b8a\u60c5\u51b5\u53eb\u505a\u91cd\u590d\u8d77\u59cb\u6761\u4ef6\uff08Repeated Start\uff09\uff0c\u5c31\u662f\u5728\u4e00\u6b21\u901a\u4fe1\u8fc7\u7a0b\u4e2d\uff0c\u4e0d\u53d1\u9001\u505c\u6b62\u6761\u4ef6\uff0c\u76f4\u63a5\u518d\u53d1\u9001\u4e00\u4e2a\u8d77\u59cb\u6761\u4ef6\u3002<\/p>\n<p>\u8fd9\u6837\u53ef\u4ee5\u5728\u4e0d\u91ca\u653e\u603b\u7ebf\u7684\u60c5\u51b5\u4e0b\u6539\u53d8\u901a\u4fe1\u65b9\u5411\u6216\u5207\u6362\u4ece\u8bbe\u5907\uff0c\u5e38\u7528\u4e8e\u8fde\u7eed\u8bfb\u5199\u64cd\u4f5c\u3002<\/p>\n<h3>2.1.1 \u6570\u636e\u4f20\u8f93\u683c\u5f0f<\/h3>\n<p>I2C \u603b\u7ebf\u4e0a\u7684\u6570\u636e\u4f20\u8f93\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\uff0c\u6bcf\u4e2a\u5b57\u8282\u90fd\u662f 8 \u4f4d\u3002<\/p>\n<p>\u6570\u636e\u5728 SCL \u4e3a\u4f4e\u7535\u5e73\u671f\u95f4\u51c6\u5907\u597d\uff0c\u5728 SCL \u4e3a\u9ad8\u7535\u5e73\u671f\u95f4\u88ab\u91c7\u6837\u3002<\/p>\n<p>\u6570\u636e\u4f20\u8f93\u9075\u5faa\u9ad8\u4f4d\u5728\u524d\uff08MSB First\uff09\u7684\u539f\u5219\uff0c\u4e5f\u5c31\u662f\u5148\u4f20\u8f93\u6700\u9ad8\u4f4d\u3002<\/p>\n<p>\u6bcf\u4f20\u8f93\u5b8c\u4e00\u4e2a\u5b57\u8282\uff0c\u63a5\u6536\u65b9\u90fd\u8981\u53d1\u9001\u4e00\u4e2a\u5e94\u7b54\u4f4d\uff08ACK\uff09\u6216\u975e\u5e94\u7b54\u4f4d\uff08NACK\uff09\u3002<\/p>\n<p>\u5e94\u7b54\u4f4d\u662f\u5728\u7b2c 9 \u4e2a\u65f6\u949f\u5468\u671f\u5185\uff0c\u63a5\u6536\u65b9\u5c06 SDA \u62c9\u4f4e\u8868\u793a\u5e94\u7b54\uff0c\u5982\u679c SDA \u4fdd\u6301\u9ad8\u7535\u5e73\u5219\u8868\u793a\u975e\u5e94\u7b54\u3002<\/p>\n<p>\u4e3b\u8bbe\u5907\u4f5c\u4e3a\u63a5\u6536\u65b9\u65f6\uff0c\u901a\u5e38\u5728\u63a5\u6536\u5230\u6700\u540e\u4e00\u4e2a\u5b57\u8282\u540e\u53d1\u9001\u975e\u5e94\u7b54\u4f4d\uff0c\u544a\u8bc9\u4ece\u8bbe\u5907\u6570\u636e\u4f20\u8f93\u7ed3\u675f\u4e86\u3002<\/p>\n<h3>2.2 \u8bbe\u5907\u5730\u5740<\/h3>\n<p>I2C \u603b\u7ebf\u4e0a\u7684\u6bcf\u4e2a\u4ece\u8bbe\u5907\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684\u5730\u5740\uff0c\u4e3b\u8bbe\u5907\u901a\u8fc7\u8fd9\u4e2a\u5730\u5740\u6765\u9009\u62e9\u8981\u901a\u4fe1\u7684\u4ece\u8bbe\u5907\u3002<\/p>\n<p>\u6807\u51c6\u7684 I2C \u5730\u5740\u662f 7 \u4f4d\uff0c\u52a0\u4e0a 1 \u4f4d\u8bfb\u5199\u4f4d\uff0c\u603b\u5171\u5360\u7528\u4e00\u4e2a\u5b57\u8282\u3002<\/p>\n<p>\u8bfb\u5199\u4f4d\u4e3a 0 \u8868\u793a\u5199\u64cd\u4f5c\uff0c\u4e3a 1 \u8868\u793a\u8bfb\u64cd\u4f5c\u3002<\/p>\n<p>\u6bd4\u5982\u4e00\u4e2a EEPROM \u82af\u7247\u7684\u5730\u5740\u662f 0x50\uff08\u4e8c\u8fdb\u5236 1010000\uff09\uff0c\u5f53\u4e3b\u8bbe\u5907\u8981\u5199\u6570\u636e\u65f6\uff0c\u53d1\u9001\u7684\u5730\u5740\u5b57\u8282\u5c31\u662f 0xA0\uff081010000 + 0\uff09\uff1b\u5f53\u4e3b\u8bbe\u5907\u8981\u8bfb\u6570\u636e\u65f6\uff0c\u53d1\u9001\u7684\u5730\u5740\u5b57\u8282\u5c31\u662f 0xA1\uff081010000 + 1\uff09\u3002<\/p>\n<p>\u6709\u4e9b I2C \u8bbe\u5907\u652f\u6301 10 \u4f4d\u5730\u5740\u6a21\u5f0f\uff0c\u8fd9\u6837\u53ef\u4ee5\u5728\u540c\u4e00\u6761\u603b\u7ebf\u4e0a\u8fde\u63a5\u66f4\u591a\u8bbe\u5907\u3002<\/p>\n<p>10 \u4f4d\u5730\u5740\u7684\u4f20\u8f93\u9700\u8981\u4e24\u4e2a\u5b57\u8282\uff0c\u7b2c\u4e00\u4e2a\u5b57\u8282\u7684\u9ad8 5 \u4f4d\u662f 11110\uff0c\u540e\u9762\u8ddf\u7740 10 \u4f4d\u5730\u5740\u7684\u6700\u9ad8 2 \u4f4d\u548c\u8bfb\u5199\u4f4d\uff1b\u7b2c\u4e8c\u4e2a\u5b57\u8282\u662f 10 \u4f4d\u5730\u5740\u7684\u4f4e 8 \u4f4d\u3002<\/p>\n<p>\u4e0d\u8fc7\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c10 \u4f4d\u5730\u5740\u6a21\u5f0f\u7528\u5f97\u6bd4\u8f83\u5c11\u3002<\/p>\n<h3>2.2.1 \u5730\u5740\u51b2\u7a81\u95ee\u9898<\/h3>\n<p>\u5728\u8bbe\u8ba1\u7cfb\u7edf\u65f6\uff0c\u5fc5\u987b\u786e\u4fdd\u603b\u7ebf\u4e0a\u7684\u6bcf\u4e2a\u4ece\u8bbe\u5907\u5730\u5740\u90fd\u4e0d\u76f8\u540c\u3002<\/p>\n<p>\u4f46\u6709\u65f6\u5019\u4f1a\u9047\u5230\u5730\u5740\u51b2\u7a81\u7684\u60c5\u51b5\uff0c\u6bd4\u5982\u9700\u8981\u5728\u540c\u4e00\u6761\u603b\u7ebf\u4e0a\u8fde\u63a5\u4e24\u4e2a\u76f8\u540c\u578b\u53f7\u7684\u4f20\u611f\u5668\uff0c\u800c\u8fd9\u4e24\u4e2a\u4f20\u611f\u5668\u7684\u5730\u5740\u662f\u56fa\u5b9a\u7684\u3002<\/p>\n<p>\u89e3\u51b3\u529e\u6cd5\u6709\u51e0\u79cd\uff1a\u4e00\u662f\u9009\u62e9\u652f\u6301\u5730\u5740\u914d\u7f6e\u7684\u82af\u7247\uff0c\u5f88\u591a I2C \u8bbe\u5907\u90fd\u6709\u51e0\u4e2a\u5730\u5740\u9009\u62e9\u5f15\u811a\uff0c\u901a\u8fc7\u63a5\u9ad8\u7535\u5e73\u6216\u4f4e\u7535\u5e73\u53ef\u4ee5\u6539\u53d8\u8bbe\u5907\u5730\u5740\u3002<\/p>\n<p>\u4e8c\u662f\u4f7f\u7528 I2C \u603b\u7ebf\u6269\u5c55\u5668\u6216\u591a\u8def\u590d\u7528\u5668\uff0c\u5c06\u4e00\u6761\u603b\u7ebf\u6269\u5c55\u6210\u591a\u6761\u72ec\u7acb\u7684\u603b\u7ebf\u3002<\/p>\n<p>\u4e09\u662f\u5982\u679c\u53ef\u80fd\u7684\u8bdd\uff0c\u4f7f\u7528\u8f6f\u4ef6\u6a21\u62df I2C\uff0c\u7528\u4e0d\u540c\u7684 GPIO \u5f15\u811a\u6765\u8fde\u63a5\u4e0d\u540c\u7684\u8bbe\u5907\u3002<\/p>\n<h3>2.3 \u5b8c\u6574\u7684\u901a\u4fe1\u65f6\u5e8f<\/h3>\n<p>\u4e00\u6b21\u5b8c\u6574\u7684 I2C \u5199\u64cd\u4f5c\u65f6\u5e8f\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u4e3b\u8bbe\u5907\u53d1\u9001\u8d77\u59cb\u6761\u4ef6<\/li>\n<li>\u4e3b\u8bbe\u5907\u53d1\u9001\u4ece\u8bbe\u5907\u5730\u5740\u548c\u5199\u6807\u5fd7\uff08\u5730\u5740\u5b57\u8282\u7684\u6700\u4f4e\u4f4d\u4e3a 0\uff09<\/li>\n<li>\u4ece\u8bbe\u5907\u53d1\u9001\u5e94\u7b54\u4f4d<\/li>\n<li>\u4e3b\u8bbe\u5907\u53d1\u9001\u5bc4\u5b58\u5668\u5730\u5740\u6216\u6570\u636e<\/li>\n<li>\u4ece\u8bbe\u5907\u53d1\u9001\u5e94\u7b54\u4f4d<\/li>\n<li>\u91cd\u590d\u6b65\u9aa4 4 \u548c 5\uff0c\u76f4\u5230\u6240\u6709\u6570\u636e\u53d1\u9001\u5b8c\u6bd5<\/li>\n<li>\u4e3b\u8bbe\u5907\u53d1\u9001\u505c\u6b62\u6761\u4ef6<\/li>\n<\/ol>\n<p>\u4e00\u6b21\u5b8c\u6574\u7684 I2C \u8bfb\u64cd\u4f5c\u65f6\u5e8f\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u4e3b\u8bbe\u5907\u53d1\u9001\u8d77\u59cb\u6761\u4ef6<\/li>\n<li>\u4e3b\u8bbe\u5907\u53d1\u9001\u4ece\u8bbe\u5907\u5730\u5740\u548c\u5199\u6807\u5fd7<\/li>\n<li>\u4ece\u8bbe\u5907\u53d1\u9001\u5e94\u7b54\u4f4d<\/li>\n<li>\u4e3b\u8bbe\u5907\u53d1\u9001\u8981\u8bfb\u53d6\u7684\u5bc4\u5b58\u5668\u5730\u5740<\/li>\n<li>\u4ece\u8bbe\u5907\u53d1\u9001\u5e94\u7b54\u4f4d<\/li>\n<li>\u4e3b\u8bbe\u5907\u53d1\u9001\u91cd\u590d\u8d77\u59cb\u6761\u4ef6<\/li>\n<li>\u4e3b\u8bbe\u5907\u53d1\u9001\u4ece\u8bbe\u5907\u5730\u5740\u548c\u8bfb\u6807\u5fd7\uff08\u5730\u5740\u5b57\u8282\u7684\u6700\u4f4e\u4f4d\u4e3a 1\uff09<\/li>\n<li>\u4ece\u8bbe\u5907\u53d1\u9001\u5e94\u7b54\u4f4d<\/li>\n<li>\u4ece\u8bbe\u5907\u53d1\u9001\u6570\u636e<\/li>\n<li>\u4e3b\u8bbe\u5907\u53d1\u9001\u5e94\u7b54\u4f4d\uff08\u5982\u679c\u8fd8\u8981\u7ee7\u7eed\u8bfb\uff09\u6216\u975e\u5e94\u7b54\u4f4d\uff08\u5982\u679c\u8fd9\u662f\u6700\u540e\u4e00\u4e2a\u5b57\u8282\uff09<\/li>\n<li>\u91cd\u590d\u6b65\u9aa4 9 \u548c 10\uff0c\u76f4\u5230\u6240\u6709\u6570\u636e\u8bfb\u53d6\u5b8c\u6bd5<\/li>\n<li>\u4e3b\u8bbe\u5907\u53d1\u9001\u505c\u6b62\u6761\u4ef6<\/li>\n<\/ol>\n<p>\u8fd9\u4e2a\u65f6\u5e8f\u770b\u8d77\u6765\u6bd4\u8f83\u590d\u6742\uff0c\u4f46\u5b9e\u9645\u4f7f\u7528\u65f6\uff0cSTM32 \u7684 HAL \u5e93\u5df2\u7ecf\u628a\u8fd9\u4e9b\u7ec6\u8282\u90fd\u5c01\u88c5\u597d\u4e86\uff0c\u6211\u4eec\u53ea\u9700\u8981\u8c03\u7528\u51e0\u4e2a\u7b80\u5355\u7684\u51fd\u6570\u5c31\u53ef\u4ee5\u5b8c\u6210\u901a\u4fe1\u3002<\/p>\n<h2>3. STM32 \u7684 I2C \u7f16\u7a0b\u5b9e\u6218<\/h2>\n<h3>3.1 \u786c\u4ef6 I2C \u7684\u914d\u7f6e<\/h3>\n<p>STM32 \u82af\u7247\u5185\u90e8\u96c6\u6210\u4e86\u786c\u4ef6 I2C \u63a7\u5236\u5668\uff0c\u53ef\u4ee5\u81ea\u52a8\u5904\u7406\u65f6\u5e8f\u3001\u5e94\u7b54\u7b49\u7ec6\u8282\uff0c\u5927\u5927\u7b80\u5316\u4e86\u7f16\u7a0b\u5de5\u4f5c\u3002<\/p>\n<p>\u4f7f\u7528 STM32CubeMX \u914d\u7f6e I2C \u975e\u5e38\u65b9\u4fbf\uff0c\u53ea\u9700\u8981\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\u5728 Pinout &#038; Configuration \u9875\u9762\uff0c\u627e\u5230 I2C \u5916\u8bbe\uff08\u6bd4\u5982 I2C1\uff09\uff0c\u70b9\u51fb Mode\uff0c\u9009\u62e9 I2C \u6a21\u5f0f<\/li>\n<li>\u7cfb\u7edf\u4f1a\u81ea\u52a8\u5206\u914d SDA \u548c SCL \u5f15\u811a\uff0c\u4e5f\u53ef\u4ee5\u624b\u52a8\u4fee\u6539<\/li>\n<li>\u5728 Configuration \u9875\u9762\uff0c\u8bbe\u7f6e I2C \u53c2\u6570\uff0c\u4e3b\u8981\u662f\u65f6\u949f\u901f\u7387\uff08\u6bd4\u5982 100kHz \u6216 400kHz\uff09<\/li>\n<li>\u751f\u6210\u4ee3\u7801<\/li>\n<\/ol>\n<p>\u751f\u6210\u7684\u4ee3\u7801\u4e2d\u4f1a\u6709\u4e00\u4e2a\u521d\u59cb\u5316\u51fd\u6570\uff0c\u7c7b\u4f3c\u8fd9\u6837\uff1a<\/p>\n<pre><code>void MX_I2C1_Init(void)\n{\n  hi2c1.Instance = I2C1;\n  hi2c1.Init.ClockSpeed = 100000;  \/\/ \u65f6\u949f\u901f\u7387100kHz\n  hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;\n  hi2c1.Init.OwnAddress1 = 0;\n  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;\n  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;\n  hi2c1.Init.OwnAddress2 = 0;\n  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;\n  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;\n  \n  if (HAL_I2C_Init(&amp;hi2c1) != HAL_OK)\n  {\n    Error_Handler();\n  }\n}<\/code><\/pre>\n<h3>3.2 I2C \u8bfb\u5199\u51fd\u6570<\/h3>\n<p>HAL \u5e93\u63d0\u4f9b\u4e86\u591a\u4e2a I2C \u901a\u4fe1\u51fd\u6570\uff0c\u6700\u5e38\u7528\u7684\u6709\u4ee5\u4e0b\u51e0\u4e2a\uff1a<\/p>\n<pre><code>\/\/ \u4e3b\u8bbe\u5907\u53d1\u9001\u6570\u636e\nHAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, \n                                          uint16_t DevAddress, \n                                          uint8_t *pData, \n                                          uint16_t Size, \n                                          uint32_t Timeout);\n\u200b\n\/\/ \u4e3b\u8bbe\u5907\u63a5\u6536\u6570\u636e\nHAL_StatusTypeDef HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi2c, \n                                         uint16_t DevAddress, \n                                         uint8_t *pData, \n                                         uint16_t Size, \n                                         uint32_t Timeout);\n\u200b\n\/\/ \u5411\u6307\u5b9a\u5bc4\u5b58\u5668\u5199\u6570\u636e\nHAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, \n                                    uint16_t DevAddress, \n                                    uint16_t MemAddress, \n                                    uint16_t MemAddSize, \n                                    uint8_t *pData, \n                                    uint16_t Size, \n                                    uint32_t Timeout);\n\u200b\n\/\/ \u4ece\u6307\u5b9a\u5bc4\u5b58\u5668\u8bfb\u6570\u636e\nHAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, \n                                   uint16_t DevAddress, \n                                   uint16_t MemAddress, \n                                   uint16_t MemAddSize, \n                                   uint8_t *pData, \n                                   uint16_t Size, \n                                   uint32_t Timeout);<\/code><\/pre>\n<h3>3.2.1 \u5b9e\u6218\u6848\u4f8b\uff1a\u8bfb\u53d6 MPU6050 \u4f20\u611f\u5668<\/h3>\n<p>MPU6050 \u662f\u4e00\u4e2a\u5e38\u7528\u7684\u516d\u8f74\u59ff\u6001\u4f20\u611f\u5668\uff0c\u5185\u90e8\u96c6\u6210\u4e86\u4e09\u8f74\u9640\u87ba\u4eea\u548c\u4e09\u8f74\u52a0\u901f\u5ea6\u8ba1\uff0c\u901a\u8fc7 I2C \u63a5\u53e3\u4e0e\u4e3b\u63a7\u82af\u7247\u901a\u4fe1\u3002<\/p>\n<p>\u5b83\u7684 I2C \u5730\u5740\u662f 0x68 \u6216 0x69\uff08\u53d6\u51b3\u4e8e AD0 \u5f15\u811a\u7684\u7535\u5e73\uff09\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u8bfb\u53d6 MPU6050 \u6570\u636e\u7684\u5b8c\u6574\u4f8b\u7a0b\uff1a<\/p>\n<pre><code>#define MPU6050_ADDR 0xD0  \/\/ MPU6050\u5730\u5740\u5de6\u79fb1\u4f4d\uff080x68 &lt;&lt; 1\uff09\n#define WHO_AM_I_REG 0x75  \/\/ WHO_AM_I\u5bc4\u5b58\u5668\u5730\u5740\n#define PWR_MGMT_1_REG 0x6B  \/\/ \u7535\u6e90\u7ba1\u7406\u5bc4\u5b58\u5668\n#define ACCEL_XOUT_H 0x3B  \/\/ \u52a0\u901f\u5ea6X\u8f74\u9ad8\u5b57\u8282\u5bc4\u5b58\u5668\n\u200b\n\/\/ \u521d\u59cb\u5316MPU6050\nuint8_t MPU6050_Init(void)\n{\n    uint8_t check;\n    uint8_t data;\n    \n    \/\/ \u8bfb\u53d6WHO_AM_I\u5bc4\u5b58\u5668\uff0c\u68c0\u67e5\u8bbe\u5907\u662f\u5426\u5b58\u5728\n    HAL_I2C_Mem_Read(&amp;hi2c1, MPU6050_ADDR, WHO_AM_I_REG, 1, &amp;check, 1, 1000);\n    \n    if(check == 0x68)  \/\/ MPU6050\u7684WHO_AM_I\u503c\u662f0x68\n    {\n        \/\/ \u5524\u9192MPU6050\uff08\u9ed8\u8ba4\u662f\u7761\u7720\u6a21\u5f0f\uff09\n        data = 0;\n        HAL_I2C_Mem_Write(&amp;hi2c1, MPU6050_ADDR, PWR_MGMT_1_REG, 1, &amp;data, 1, 1000);\n        \n        \/\/ \u8bbe\u7f6e\u52a0\u901f\u5ea6\u8ba1\u91cf\u7a0b\u4e3a\u00b12g\n        data = 0x00;\n        HAL_I2C_Mem_Write(&amp;hi2c1, MPU6050_ADDR, 0x1C, 1, &amp;data, 1, 1000);\n        \n        \/\/ \u8bbe\u7f6e\u9640\u87ba\u4eea\u91cf\u7a0b\u4e3a\u00b1250\u00b0\/s\n        data = 0x00;\n        HAL_I2C_Mem_Write(&amp;hi2c1, MPU6050_ADDR, 0x1B, 1, &amp;data, 1, 1000);\n        \n        return 0;\n    }\n    return 1;\n}\n\u200b\n\/\/ \u8bfb\u53d6\u52a0\u901f\u5ea6\u6570\u636e\nvoid MPU6050_Read_Accel(int16_t *AccelX, int16_t *AccelY, int16_t *AccelZ)\n{\n    uint8_t data[6];\n    \n    \/\/ \u4eceACCEL_XOUT_H\u5f00\u59cb\u8fde\u7eed\u8bfb\u53d66\u4e2a\u5b57\u8282\n    HAL_I2C_Mem_Read(&amp;hi2c1, MPU6050_ADDR, ACCEL_XOUT_H, 1, data, 6, 1000);\n    \n    \/\/ \u7ec4\u5408\u9ad8\u4f4e\u5b57\u8282\n    *AccelX = (int16_t)(data[0] &lt;&lt; 8 | data[1]);\n    *AccelY = (int16_t)(data[2] &lt;&lt; 8 | data[3]);\n    *AccelZ = (int16_t)(data[4] &lt;&lt; 8 | data[5]);\n}\n\u200b\n\/\/ \u4e3b\u51fd\u6570\u4e2d\u7684\u4f7f\u7528\u793a\u4f8b\nint main(void)\n{\n    HAL_Init();\n    SystemClock_Config();\n    MX_GPIO_Init();\n    MX_I2C1_Init();\n    \n    int16_t accel_x, accel_y, accel_z;\n    \n    if(MPU6050_Init() == 0)\n    {\n        while(1)\n        {\n            MPU6050_Read_Accel(&amp;accel_x, &amp;accel_y, &amp;accel_z);\n            \n            \/\/ \u8fd9\u91cc\u53ef\u4ee5\u5bf9\u6570\u636e\u8fdb\u884c\u5904\u7406\u6216\u663e\u793a\n            \/\/ printf(&quot;X: %d, Y: %d, Z: %d\/r\/n&quot;, accel_x, accel_y, accel_z);\n            \n            HAL_Delay(100);  \/\/ \u5ef6\u65f6100ms\n        }\n    }\n    else\n    {\n        \/\/ MPU6050\u521d\u59cb\u5316\u5931\u8d25\n        while(1)\n        {\n            \/\/ \u9519\u8bef\u5904\u7406\n        }\n    }\n}<\/code><\/pre>\n<p>\u8fd9\u4e2a\u4f8b\u7a0b\u5c55\u793a\u4e86 I2C \u901a\u4fe1\u7684\u5178\u578b\u6d41\u7a0b\uff1a\u5148\u521d\u59cb\u5316\u8bbe\u5907\uff0c\u7136\u540e\u5faa\u73af\u8bfb\u53d6\u6570\u636e\u3002<\/p>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cHAL \u5e93\u7684 I2C \u5730\u5740\u53c2\u6570\u9700\u8981\u5de6\u79fb 1 \u4f4d\uff0c\u56e0\u4e3a\u5e93\u51fd\u6570\u4f1a\u81ea\u52a8\u6dfb\u52a0\u8bfb\u5199\u4f4d\u3002<\/p>\n<h3>3.3 \u8f6f\u4ef6\u6a21\u62df I2C<\/h3>\n<p>\u6709\u65f6\u5019\u786c\u4ef6 I2C \u5f15\u811a\u88ab\u5360\u7528\u4e86\uff0c\u6216\u8005\u9700\u8981\u5728\u4efb\u610f GPIO \u4e0a\u5b9e\u73b0 I2C \u901a\u4fe1\uff0c\u8fd9\u65f6\u5019\u53ef\u4ee5\u7528\u8f6f\u4ef6\u6a21\u62df I2C\u3002<\/p>\n<p>\u867d\u7136\u8f6f\u4ef6\u6a21\u62df\u7684\u6548\u7387\u4e0d\u5982\u786c\u4ef6 I2C\uff0c\u4f46\u80dc\u5728\u7075\u6d3b\u6027\u9ad8\uff0c\u800c\u4e14\u5bf9\u4e8e\u4f4e\u901f\u8bbe\u5907\u6765\u8bf4\u5b8c\u5168\u591f\u7528\u3002<\/p>\n<p>\u8f6f\u4ef6\u6a21\u62df I2C \u7684\u6838\u5fc3\u662f\u7528 GPIO \u6765\u4ea7\u751f I2C \u65f6\u5e8f\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u5b9e\u73b0\uff1a<\/p>\n<pre><code>\/\/ \u5b9a\u4e49SDA\u548cSCL\u5f15\u811a\n#define I2C_SCL_PIN GPIO_PIN_6\n#define I2C_SCL_PORT GPIOB\n#define I2C_SDA_PIN GPIO_PIN_7\n#define I2C_SDA_PORT GPIOB\n\u200b\n\/\/ \u5ef6\u65f6\u51fd\u6570\uff08\u7528\u4e8e\u63a7\u5236\u65f6\u949f\u901f\u7387\uff09\nvoid I2C_Delay(void)\n{\n    uint8_t i = 10;  \/\/ \u8c03\u6574\u8fd9\u4e2a\u503c\u53ef\u4ee5\u6539\u53d8\u901f\u7387\n    while(i--);\n}\n\u200b\n\/\/ \u8bbe\u7f6eSDA\u4e3a\u8f93\u51fa\u6a21\u5f0f\nvoid SDA_OUT(void)\n{\n    GPIO_InitTypeDef GPIO_InitStruct = {0};\n    GPIO_InitStruct.Pin = I2C_SDA_PIN;\n    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;\n    GPIO_InitStruct.Pull = GPIO_NOPULL;\n    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;\n    HAL_GPIO_Init(I2C_SDA_PORT, &amp;GPIO_InitStruct);\n}\n\u200b\n\/\/ \u8bbe\u7f6eSDA\u4e3a\u8f93\u5165\u6a21\u5f0f\nvoid SDA_IN(void)\n{\n    GPIO_InitTypeDef GPIO_InitStruct = {0};\n    GPIO_InitStruct.Pin = I2C_SDA_PIN;\n    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;\n    GPIO_InitStruct.Pull = GPIO_PULLUP;\n    HAL_GPIO_Init(I2C_SDA_PORT, &amp;GPIO_InitStruct);\n}\n\u200b\n\/\/ \u4ea7\u751f\u8d77\u59cb\u6761\u4ef6\nvoid I2C_Start(void)\n{\n    SDA_OUT();\n    HAL_GPIO_WritePin(I2C_SDA_PORT, I2C_SDA_PIN, GPIO_PIN_SET);\n    HAL_GPIO_WritePin(I2C_SCL_PORT, I2C_SCL_PIN, GPIO_PIN_SET);\n    I2C_Delay();\n    HAL_GPIO_WritePin(I2C_SDA_PORT, I2C_SDA_PIN, GPIO_PIN_RESET);\n    I2C_Delay();\n    HAL_GPIO_WritePin(I2C_SCL_PORT, I2C_SCL_PIN, GPIO_PIN_RESET);\n}\n\u200b\n\/\/ \u4ea7\u751f\u505c\u6b62\u6761\u4ef6\nvoid I2C_Stop(void)\n{\n    SDA_OUT();\n    HAL_GPIO_WritePin(I2C_SCL_PORT, I2C_SCL_PIN, GPIO_PIN_RESET);\n    HAL_GPIO_WritePin(I2C_SDA_PORT, I2C_SDA_PIN, GPIO_PIN_RESET);\n    I2C_Delay();\n    HAL_GPIO_WritePin(I2C_SCL_PORT, I2C_SCL_PIN, GPIO_PIN_SET);\n    I2C_Delay();\n    HAL_GPIO_WritePin(I2C_SDA_PORT, I2C_SDA_PIN, GPIO_PIN_SET);\n    I2C_Delay();\n}\n\u200b\n\/\/ \u53d1\u9001\u4e00\u4e2a\u5b57\u8282\nvoid I2C_Send_Byte(uint8_t byte)\n{\n    uint8_t i;\n    SDA_OUT();\n    HAL_GPIO_WritePin(I2C_SCL_PORT, I2C_SCL_PIN, GPIO_PIN_RESET);\n    \n    for(i = 0; i &lt; 8; i++)\n    {\n        if(byte &amp; 0x80)\n            HAL_GPIO_WritePin(I2C_SDA_PORT, I2C_SDA_PIN, GPIO_PIN_SET);\n        else\n            HAL_GPIO_WritePin(I2C_SDA_PORT, I2C_SDA_PIN, GPIO_PIN_RESET);\n        \n        byte &lt;&lt;= 1;\n        I2C_Delay();\n        HAL_GPIO_WritePin(I2C_SCL_PORT, I2C_SCL_PIN, GPIO_PIN_SET);\n        I2C_Delay();\n        HAL_GPIO_WritePin(I2C_SCL_PORT, I2C_SCL_PIN, GPIO_PIN_RESET);\n    }\n}\n\u200b\n\/\/ \u7b49\u5f85\u5e94\u7b54\nuint8_t I2C_Wait_Ack(void)\n{\n    uint8_t ack;\n    SDA_IN();\n    HAL_GPIO_WritePin(I2C_SCL_PORT, I2C_SCL_PIN, GPIO_PIN_SET);\n    I2C_Delay();\n    \n    if(HAL_GPIO_ReadPin(I2C_SDA_PORT, I2C_SDA_PIN))\n        ack = 1;  \/\/ \u65e0\u5e94\u7b54\n    else\n        ack = 0;  \/\/ \u6709\u5e94\u7b54\n    \n    HAL_GPIO_WritePin(I2C_SCL_PORT, I2C_SCL_PIN, GPIO_PIN_RESET);\n    return ack;\n}<\/code><\/pre>\n<p>\u8f6f\u4ef6\u6a21\u62df I2C \u7684\u4ee3\u7801\u6bd4\u8f83\u957f\uff0c\u8fd9\u91cc\u53ea\u5217\u51fa\u4e86\u90e8\u5206\u5173\u952e\u51fd\u6570\u3002<\/p>\n<p>\u5b8c\u6574\u7684\u5b9e\u73b0\u8fd8\u9700\u8981\u63a5\u6536\u5b57\u8282\u3001\u53d1\u9001\u5e94\u7b54\u7b49\u51fd\u6570\u3002<\/p>\n<p>\u867d\u7136\u4ee3\u7801\u91cf\u6bd4\u8f83\u5927\uff0c\u4f46\u539f\u7406\u5f88\u6e05\u6670\uff0c\u5c31\u662f\u4e25\u683c\u6309\u7167 I2C \u65f6\u5e8f\u6765\u64cd\u4f5c GPIO \u5f15\u811a\u3002<\/p>\n<h2>4. I2C \u4f7f\u7528\u4e2d\u7684\u5e38\u89c1\u95ee\u9898<\/h2>\n<h3>4.1 \u901a\u4fe1\u5931\u8d25\u7684\u6392\u67e5<\/h3>\n<p>\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0cI2C \u901a\u4fe1\u5931\u8d25\u662f\u5f88\u5e38\u89c1\u7684\u95ee\u9898\u3002<\/p>\n<p>\u9047\u5230\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u6392\u67e5\uff1a<\/p>\n<p>\u7b2c\u4e00\u6b65\uff0c\u68c0\u67e5\u786c\u4ef6\u8fde\u63a5\u3002<\/p>\n<p>\u7528\u4e07\u7528\u8868\u6d4b\u91cf SDA \u548c SCL \u662f\u5426\u6b63\u5e38\uff0c\u9759\u6001\u65f6\u5e94\u8be5\u662f\u9ad8\u7535\u5e73\uff08\u4e0a\u62c9\u7535\u963b\u7684\u4f5c\u7528\uff09\u3002<\/p>\n<p>\u5982\u679c\u662f\u4f4e\u7535\u5e73\uff0c\u53ef\u80fd\u662f\u67d0\u4e2a\u8bbe\u5907\u628a\u603b\u7ebf\u62c9\u4f4e\u4e86\uff0c\u6216\u8005\u4e0a\u62c9\u7535\u963b\u6ca1\u63a5\u597d\u3002<\/p>\n<p>\u7b2c\u4e8c\u6b65\uff0c\u68c0\u67e5\u8bbe\u5907\u5730\u5740\u3002<\/p>\n<p>\u5f88\u591a\u521d\u5b66\u8005\u4f1a\u5fd8\u8bb0\u5730\u5740\u8981\u5de6\u79fb 1 \u4f4d\uff0c\u6216\u8005\u628a\u8bfb\u5199\u4f4d\u641e\u6df7\u4e86\u3002<\/p>\n<p>\u53ef\u4ee5\u7528\u903b\u8f91\u5206\u6790\u4eea\u6293\u53d6\u6ce2\u5f62\uff0c\u770b\u770b\u5b9e\u9645\u53d1\u9001\u7684\u5730\u5740\u662f\u5426\u6b63\u786e\u3002<\/p>\n<p>\u7b2c\u4e09\u6b65\uff0c\u68c0\u67e5\u65f6\u5e8f\u3002<\/p>\n<p>\u6709\u4e9b I2C \u8bbe\u5907\u5bf9\u65f6\u5e8f\u8981\u6c42\u6bd4\u8f83\u4e25\u683c\uff0c\u5982\u679c\u65f6\u949f\u901f\u7387\u592a\u9ad8\u6216\u8005\u5ef6\u65f6\u4e0d\u591f\uff0c\u53ef\u80fd\u5bfc\u81f4\u901a\u4fe1\u5931\u8d25\u3002<\/p>\n<p>\u53ef\u4ee5\u5c1d\u8bd5\u964d\u4f4e\u65f6\u949f\u901f\u7387\uff0c\u6216\u8005\u5728\u5173\u952e\u4f4d\u7f6e\u589e\u52a0\u5ef6\u65f6\u3002<\/p>\n<p>\u7b2c\u56db\u6b65\uff0c\u68c0\u67e5\u8bbe\u5907\u72b6\u6001\u3002<\/p>\n<p>\u6709\u4e9b\u8bbe\u5907\u9700\u8981\u5148\u521d\u59cb\u5316\u624d\u80fd\u6b63\u5e38\u5de5\u4f5c\uff0c\u6bd4\u5982 MPU6050 \u9ed8\u8ba4\u662f\u7761\u7720\u6a21\u5f0f\uff0c\u5fc5\u987b\u5148\u5199\u7535\u6e90\u7ba1\u7406\u5bc4\u5b58\u5668\u5524\u9192\u5b83\u3002<\/p>\n<p>\u4ed4\u7ec6\u9605\u8bfb\u8bbe\u5907\u7684\u6570\u636e\u624b\u518c\uff0c\u6309\u7167\u8981\u6c42\u8fdb\u884c\u521d\u59cb\u5316\u3002<\/p>\n<h3>4.2 \u603b\u7ebf\u51b2\u7a81\u548c\u4ef2\u88c1<\/h3>\n<p>\u5f53\u591a\u4e2a\u4e3b\u8bbe\u5907\u540c\u65f6\u53d1\u8d77\u901a\u4fe1\u65f6\uff0c\u53ef\u80fd\u4f1a\u53d1\u751f\u603b\u7ebf\u51b2\u7a81\u3002<\/p>\n<p>I2C \u534f\u8bae\u5b9a\u4e49\u4e86\u4ef2\u88c1\u673a\u5236\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff1a\u6bcf\u4e2a\u4e3b\u8bbe\u5907\u5728\u53d1\u9001\u6570\u636e\u7684\u540c\u65f6\u76d1\u6d4b\u603b\u7ebf\u72b6\u6001\uff0c\u5982\u679c\u53d1\u73b0\u603b\u7ebf\u7535\u5e73\u4e0e\u81ea\u5df1\u53d1\u9001\u7684\u4e0d\u4e00\u81f4\uff0c\u5c31\u8bf4\u660e\u6709\u5176\u4ed6\u8bbe\u5907\u4e5f\u5728\u53d1\u9001\u6570\u636e\uff0c\u8fd9\u65f6\u5019\u8981\u7acb\u5373\u505c\u6b62\u53d1\u9001\uff0c\u8ba9\u51fa\u603b\u7ebf\u3002<\/p>\n<p>\u4ef2\u88c1\u8fc7\u7a0b\u662f\u6309\u4f4d\u8fdb\u884c\u7684\u3002<\/p>\n<p>\u7531\u4e8e I2C \u662f\u5f00\u6f0f\u8f93\u51fa\uff0c\u4f4e\u7535\u5e73\u4f1a\u8986\u76d6\u9ad8\u7535\u5e73\uff0c\u6240\u4ee5\u53d1\u9001\u4f4e\u7535\u5e73\u7684\u8bbe\u5907\u4f1a\u8d62\u5f97\u4ef2\u88c1\u3002<\/p>\n<p>\u6bd4\u5982\u8bbe\u5907 A \u53d1\u9001\u5730\u5740 0x50\uff0801010000\uff09\uff0c\u8bbe\u5907 B \u53d1\u9001\u5730\u5740 0x48\uff0801001000\uff09\uff0c\u5728\u7b2c 5 \u4f4d\u65f6\uff0cA \u53d1\u9001 1 \u4f46\u68c0\u6d4b\u5230 0\uff0c\u5c31\u77e5\u9053\u81ea\u5df1\u8f93\u6389\u4e86\u4ef2\u88c1\uff0c\u4f1a\u505c\u6b62\u53d1\u9001\u3002<\/p>\n<p>\u4e0d\u8fc7\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u591a\u4e3b\u8bbe\u5907\u7684\u60c5\u51b5\u6bd4\u8f83\u5c11\u89c1\u3002<\/p>\n<p>\u5982\u679c\u786e\u5b9e\u9700\u8981\u591a\u4e2a\u4e3b\u8bbe\u5907\uff0c\u8981\u505a\u597d\u8f6f\u4ef6\u8bbe\u8ba1\uff0c\u907f\u514d\u540c\u65f6\u53d1\u8d77\u901a\u4fe1\uff0c\u6216\u8005\u4f7f\u7528\u4ef2\u88c1\u673a\u5236\u6765\u5904\u7406\u51b2\u7a81\u3002<\/p>\n<h3>4.3 \u65f6\u949f\u5ef6\u5c55<\/h3>\n<p>I2C \u534f\u8bae\u5141\u8bb8\u4ece\u8bbe\u5907\u5728\u9700\u8981\u66f4\u591a\u65f6\u95f4\u5904\u7406\u6570\u636e\u65f6\uff0c\u901a\u8fc7\u62c9\u4f4e SCL \u6765\u5ef6\u957f\u65f6\u949f\u5468\u671f\uff0c\u8fd9\u53eb\u505a\u65f6\u949f\u5ef6\u5c55\uff08Clock Stretching\uff09\u3002<\/p>\n<p>\u4e3b\u8bbe\u5907\u5728\u62c9\u9ad8 SCL \u540e\uff0c\u5fc5\u987b\u68c0\u6d4b SCL \u662f\u5426\u771f\u7684\u53d8\u6210\u9ad8\u7535\u5e73\uff0c\u5982\u679c SCL \u88ab\u4ece\u8bbe\u5907\u62c9\u4f4e\u4e86\uff0c\u5c31\u8981\u7b49\u5f85\u4ece\u8bbe\u5907\u91ca\u653e SCL\u3002<\/p>\n<p>\u6709\u4e9b STM32 \u7684\u786c\u4ef6 I2C \u63a7\u5236\u5668\u652f\u6301\u65f6\u949f\u5ef6\u5c55\uff0c\u6709\u4e9b\u4e0d\u652f\u6301\u3002<\/p>\n<p>\u5982\u679c\u4e0d\u652f\u6301\uff0c\u9047\u5230\u9700\u8981\u65f6\u949f\u5ef6\u5c55\u7684\u4ece\u8bbe\u5907\u5c31\u53ef\u80fd\u51fa\u73b0\u95ee\u9898\u3002<\/p>\n<p>\u8fd9\u65f6\u5019\u53ef\u4ee5\u5c1d\u8bd5\u7528\u8f6f\u4ef6\u6a21\u62df I2C\uff0c\u6216\u8005\u5728\u8f6f\u4ef6\u4e2d\u5b9e\u73b0\u65f6\u949f\u5ef6\u5c55\u68c0\u6d4b\u3002<\/p>\n<h3>4.4 \u7535\u78c1\u5e72\u6270<\/h3>\n<p>I2C \u603b\u7ebf\u7684\u4fe1\u53f7\u9891\u7387\u4e0d\u9ad8\uff0c\u4f46\u5728\u5f3a\u7535\u78c1\u5e72\u6270\u73af\u5883\u4e0b\u4ecd\u7136\u53ef\u80fd\u51fa\u73b0\u901a\u4fe1\u9519\u8bef\u3002<\/p>\n<p>\u6211\u4e4b\u524d\u505a\u8fc7\u4e00\u4e2a\u9879\u76ee\uff0c\u8bbe\u5907\u5728\u5b9e\u9a8c\u5ba4\u6d4b\u8bd5\u65f6\u4e00\u5207\u6b63\u5e38\uff0c\u4f46\u5230\u4e86\u5de5\u4e1a\u73b0\u573a\u5c31\u9891\u7e41\u51fa\u73b0\u901a\u4fe1\u5931\u8d25\u3002<\/p>\n<p>\u540e\u6765\u53d1\u73b0\u662f\u9644\u8fd1\u6709\u5927\u529f\u7387\u7535\u673a\uff0c\u4ea7\u751f\u4e86\u5f88\u5f3a\u7684\u7535\u78c1\u5e72\u6270\u3002<\/p>\n<p>\u89e3\u51b3\u7535\u78c1\u5e72\u6270\u95ee\u9898\u7684\u65b9\u6cd5\u6709\uff1a\u7f29\u77ed I2C \u603b\u7ebf\u957f\u5ea6\uff0c\u7406\u60f3\u60c5\u51b5\u4e0b\u4e0d\u8981\u8d85\u8fc7 1 \u7c73\u3002<\/p>\n<p>\u5728 SDA \u548c SCL \u4e0a\u4e32\u8054\u5c0f\u7535\u963b\uff08\u6bd4\u5982 100\u03a9\uff09\uff0c\u53ef\u4ee5\u6291\u5236\u9ad8\u9891\u5e72\u6270\u3002<\/p>\n<p>\u4f7f\u7528\u5c4f\u853d\u7ebf\u6216\u53cc\u7ede\u7ebf\u3002<\/p>\n<p>\u5728\u8f6f\u4ef6\u4e2d\u589e\u52a0\u91cd\u8bd5\u673a\u5236\uff0c\u68c0\u6d4b\u5230\u901a\u4fe1\u9519\u8bef\u65f6\u81ea\u52a8\u91cd\u8bd5\u3002<\/p>\n<h2>5. \u603b\u7ed3<\/h2>\n<p>I2C \u603b\u7ebf\u662f\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\u6700\u5e38\u7528\u7684\u901a\u4fe1\u534f\u8bae\u4e4b\u4e00\uff0c\u5b83\u7ed3\u6784\u7b80\u5355\u3001\u4f7f\u7528\u65b9\u4fbf\u3001\u8282\u7701\u5f15\u811a\uff0c\u975e\u5e38\u9002\u5408\u8fde\u63a5\u5404\u79cd\u4f4e\u901f\u5916\u8bbe\u3002<\/p>\n<p>\u638c\u63e1 I2C \u7684\u5de5\u4f5c\u539f\u7406\u548c\u7f16\u7a0b\u65b9\u6cd5\uff0c\u662f\u6bcf\u4e2a\u5d4c\u5165\u5f0f\u5de5\u7a0b\u5e08\u7684\u5fc5\u5907\u6280\u80fd\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u65e2\u8981\u7406\u89e3 I2C \u7684\u5e95\u5c42\u65f6\u5e8f\uff0c\u4e5f\u8981\u4f1a\u4f7f\u7528 HAL \u5e93\u7b49\u9ad8\u5c42\u63a5\u53e3\u3002<\/p>\n<p>\u9047\u5230\u95ee\u9898\u65f6\uff0c\u8981\u5584\u4e8e\u7528\u903b\u8f91\u5206\u6790\u4eea\u7b49\u5de5\u5177\u6765\u5206\u6790\u6ce2\u5f62\uff0c\u7ed3\u5408\u6570\u636e\u624b\u518c\u6765\u6392\u67e5\u539f\u56e0\u3002<\/p>\n<p>\u53ea\u8981\u591a\u5b9e\u8df5\u3001\u591a\u603b\u7ed3\uff0c\u5f88\u5feb\u5c31\u80fd\u719f\u7ec3\u638c\u63e1 I2C \u901a\u4fe1\u3002<\/p>\n<p>\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u5e2e\u52a9\u5927\u5bb6\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528 I2C \u603b\u7ebf\u3002<\/p>\n<p>\u5982\u679c\u4f60\u5728\u9879\u76ee\u4e2d\u9047\u5230\u4e86 I2C \u76f8\u5173\u7684\u95ee\u9898\uff0c\u6b22\u8fce\u7559\u8a00\u4ea4\u6d41\u8ba8\u8bba\u3002<\/p>\n<p><strong>\u66f4\u591a\u7f16\u7a0b\u5b66\u4e60\u8d44\u6e90<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=cj7boBp9O6GBfnAFjCPFlQ%3D%3D.Hoi3ptGRvSWFWzdEjDT925sgIw6bLdYrvhwMypOsJ8md0QCH6vUSpI8pCw5H%2FyGQ2j7exGt9GjRyJiXXS3oM%2FQ%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">C \u8bed\u8a00\u96f6\u57fa\u7840\u5165\u95e8\u7535\u5b50\u4e66-2026 \u6700\u65b0\u7248<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=tyUv8Y3uEl8z%2BVEMtOUw1A%3D%3D.pYHw5Sso8UkvX3cYY2vo7iqtfnUOpkVAh1rCTATKjUiS8elfOjnBAHZoQ4vRCUHyHcqonZ4reyiIw8uK%2FUCOxg%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">STM32 \u96f6\u57fa\u7840\u5165\u95e8\u7535\u5b50\u4e66-2026 \u6700\u65b0\u7248<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=NPlzfc1voMX%2FBGJj7k3LmA%3D%3D.NJ%2B%2FvtFsP%2Bdwb%2B4Pl6UFHLuWmhIj2Rz6UyjM6pkePxm2jW8Ej2gelLONMw%2BOkwmIY02bNSatbBEOVqr6u5UD5W1NFIiskj4TwkGjQk6e%2FaY%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">FreeRTOS \u96f6\u57fa\u7840\u5165\u95e8\u7535\u5b50\u4e66-2026 \u6700\u65b0\u7248<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=74kmkiVzCz69rH3mUgUtJQ%3D%3D.CAbaiIOwktqlDZ%2B%2F6ADuVPieSFTxmBqP3QwOdkzTFc2lagKAVSwMkIqLZHXo2oEOfh2IQ%2BvDBaPOVI90kvgaAg%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">C++ \u96f6\u57fa\u7840\u5165\u95e8\u7535\u5b50\u4e66-2026 \u6700\u65b0\u7248<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=3G5WM8wUxTVQe2sZeZPXcw%3D%3D.r9YESql7NGLMDDkrt63mVvG0iX6sa4qUEx%2FaL%2FsOq%2FBVyfKx7Vv2ir8yx5%2FubT9K8rtSFAGtXSIQy4mdvfekJw%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">51 \u5355\u7247\u673a\u96f6\u57fa\u7840\u5165\u95e8\u5b66\u4e60\u8def\u7ebf<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=fw7R8zN6%2FMc%2FIL3%2BgymiUg%3D%3D.9QhEepch9ctr87eXcySbPOyWndDsFCZZ0u%2B0otduDO9SiaX%2FePwO3F7uqTDkdLGRuuvPkBKkLboUTSbL6LEY7w%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">AD \u753b\u677f\u96f6\u57fa\u7840\u5165\u95e8\u5b66\u4e60\u8def\u7ebf<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=GVeDDtcPsoNRbkhbY8lXaw%3D%3D.gmlQf06XwZn25%2BJ%2BSlXFuvxFqcP%2BT15j5j%2FlWlJRa1bGJqKOumqp2uqDOf19I1uF2ETvvJhUWfW1O0NMaiRBtQ%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">C \u8bed\u8a00\u96f6\u57fa\u7840\u5165\u95e8\u5b66\u4e60\u8def\u7ebf<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=2EpQ3bm0l%2B4A%2BNKi7DYweQ%3D%3D.5ThO18NKPPCH%2Fds431cGh5GRRz8tsb65Qn6U7zJbbwLLqX5wXYWCYtOOZG9i46vKJAMnLd5BhMmq0VsQPYX8oA%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">C++ \u8bed\u8a00\u96f6\u57fa\u7840\u5165\u95e8\u5b66\u4e60\u8def\u7ebf<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=E7bzCg8onPfaPi3RL%2FS6aw%3D%3D.2YCGeil%2FBEvzd1xi5JWY%2FinM8ABqEHky9wJbL5OdiCIe8SBj9xUVgoj3uRH2XW90GTlHYqyN7UOiPFQINvw8Bhp5uqK85XsoNnNM4BaBBLI%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">ESP32 \u96f6\u57fa\u7840\u5165\u95e8\u5b66\u4e60\u8def\u7ebf<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=c2pgMPhIq3d7%2F5I9Kdft3g%3D%3D.i6UW3729eTlVM71f3MTJ2ussR9440vzwO6oVnj7YVDRqIVQHh3lyT9SBABSE102iZZGggrVkdeGhjggnlxALTLnJes%2BuPbL7m4D7cb%2F7X5A%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">FreeRTOS \u96f6\u57fa\u7840\u5165\u95e8\u5b66\u4e60\u8def\u7ebf<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=00NoKGdifmOsBWhi7jKhKw%3D%3D.Mzmnxz%2FcQAw9CI7NdQFW7vktrcLZXa2Zr1X7SGnAI%2F3Axd6OQiXNQEwubWXcyBwOKxSxzkYcVq%2F6zHshWDTrWx9dwZyk6BowjC75NErrSsI%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">Linux \u5e94\u7528\u5f00\u53d1\u96f6\u57fa\u7840\u5165\u95e8\u5b66\u4e60\u8def\u7ebf<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=raOz9uvOxlNKmucdvxzLsA%3D%3D.fCldIa4Jeava7j%2FQwM1enfZsPs%2FxD5NwneMINwLt3B5z0irgKxpTSHuSj6%2BKgA8UMtTaa%2FNXK6sMDiMsgIw0f1q02gM9gnm9puKbdsFWUuU%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">Linux \u5e95\u5c42\u5f00\u53d1\u96f6\u57fa\u7840\u5165\u95e8\u5b66\u4e60\u8def\u7ebf<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=kaipmWa%2BGrWaMnB%2BlI1tKw%3D%3D.xpkxfprOkTJGzlBIq2xk9pXiopF%2BYJJVAdt4KzAFf94yH0aWtLAfa85MtHSmFiE5l%2B6JVpzJE68yNInDuHd%2BRA%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">LVGL \u96f6\u57fa\u7840\u5165\u95e8\u5b66\u4e60\u8def\u7ebf<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=UkzIZxOS6ceJwvpFmWUKTA%3D%3D.UGeeCsv77ULQmMbHO3zLDaiK66XBzM4WvyitzDLCh12VRpN%2BPgYb66kLjcB4RyUEx6WyKkJqnyDuoCqwCuJmPQ%3D%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">QT \u96f6\u57fa\u7840\u5165\u95e8\u5b66\u4e60\u8def\u7ebf<\/a><\/li>\n<li><a href=\"https:\/\/link.segmentfault.com\/?enc=d5Tqrh4zZ6YC88I7uttbJQ%3D%3D.aIf%2FwT0%2BHU8SEocVZe8oMxTOXa8thwhUB5Y09sC9wXqKADYnXvidkwAKaxROvpufcCdw1sLfvLsJ0W3JUl%2FMUxkTROeZRYVGPAKizSf%2Fh3Y%3D\" rel=\"nofollow noopener noreferrer\" target=\"_blank\">STM32 \u96f6\u57fa\u7840\u5165\u95e8\u5b66\u4e60\u8def\u7ebf<\/a><\/li>\n<\/ul>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000047610873\">https:\/\/segmentfault.com\/a\/1190000047610873<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5927\u5bb6\u597d\uff0c\u6211\u662f\u826f\u8bb8\u3002 \u5728\u5d4c\u5165\u5f0f\u5f00\u53d1\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u8ba9\u4e3b\u63a7\u82af\u7247\u4e0e\u5404\u79cd\u5916\u8bbe\u8fdb\u884c\u901a\u4fe1\uff0c\u6bd4\u5982\u8bfb\u53d6\u6e29\u6e7f\u5ea6\u4f20\u611f\u5668\u7684\u6570\u636e\u3001\u63a7\u5236 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10021248","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10021248","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10021248"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10021248\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10021248"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10021248"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10021248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}