{"id":10021217,"date":"2026-01-30T10:59:07","date_gmt":"2026-01-30T02:59:07","guid":{"rendered":"https:\/\/itmax.cn\/?p=10021217"},"modified":"2026-01-30T10:59:07","modified_gmt":"2026-01-30T02:59:07","slug":"iic%e6%80%bb%e7%ba%bf%e7%9a%84%e7%a1%ac%e4%bb%b6%e9%83%a8%e5%88%86%e7%9a%84%e4%b8%a4%e4%b8%aa%e5%85%b3%e9%94%ae%e7%82%b9%ef%bc%9a%e5%bc%80%e6%bc%8f%e8%be%93%e5%87%ba%e4%b8%8a%e6%8b%89%e7%94%b5","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10021217","title":{"rendered":"IIC\u603b\u7ebf\u7684\u786c\u4ef6\u90e8\u5206\u7684\u4e24\u4e2a\u5173\u952e\u70b9\uff1a\u5f00\u6f0f\u8f93\u51fa+\u4e0a\u62c9\u7535\u963b"},"content":{"rendered":"<p>\u5927\u5bb6\u597d\uff0c\u6211\u662f\u826f\u8bb8\u3002<\/p>\n<p>\u5728\u5d4c\u5165\u5f0f\u5f00\u53d1\u4e2d\uff0cIIC\uff08I2C\uff09\u603b\u7ebf\u53ef\u4ee5\u8bf4\u662f\u6700\u5e38\u7528\u7684\u901a\u4fe1\u534f\u8bae\u4e4b\u4e00\u4e86\u3002<\/p>\n<p>\u65e0\u8bba\u662f\u8bfb\u53d6\u4f20\u611f\u5668\u6570\u636e\u3001\u63a7\u5236EEPROM\u5b58\u50a8\u5668\uff0c\u8fd8\u662f\u4e0e\u5404\u79cd\u5916\u8bbe\u8fdb\u884c\u901a\u4fe1\uff0cIIC\u603b\u7ebf\u90fd\u626e\u6f14\u7740\u91cd\u8981\u89d2\u8272\u3002<\/p>\n<p>\u4f46\u5f88\u591a\u521d\u5b66\u8005\u5728\u4f7f\u7528IIC\u65f6\uff0c\u5f80\u5f80\u53ea\u5173\u6ce8\u8f6f\u4ef6\u5c42\u9762\u7684\u65f6\u5e8f\u548c\u534f\u8bae\uff0c\u5374\u5ffd\u7565\u4e86\u786c\u4ef6\u5c42\u9762\u7684\u5173\u952e\u8bbe\u8ba1\u3002<\/p>\n<p>\u4eca\u5929\u6211\u5c31\u6765\u804a\u804aIIC\u603b\u7ebf\u786c\u4ef6\u90e8\u5206\u7684\u4e24\u4e2a\u6838\u5fc3\u8981\u70b9\uff1a\u5f00\u6f0f\u8f93\u51fa\u548c\u4e0a\u62c9\u7535\u963b\u3002<\/p>\n<p>\u7406\u89e3\u4e86\u8fd9\u4e24\u70b9\uff0c\u4f60\u624d\u80fd\u771f\u6b63\u638c\u63e1IIC\u603b\u7ebf\u7684\u7cbe\u9ad3\u3002<\/p>\n<h2>1. IIC\u603b\u7ebf\u7684\u57fa\u672c\u7ed3\u6784<\/h2>\n<p>\u5728\u6df1\u5165\u8bb2\u89e3\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u7b80\u5355\u56de\u987e\u4e00\u4e0bIIC\u603b\u7ebf\u7684\u57fa\u672c\u6784\u6210\u3002<\/p>\n<p>IIC\u603b\u7ebf\u53ea\u9700\u8981\u4e24\u6839\u4fe1\u53f7\u7ebf\u5c31\u80fd\u5b9e\u73b0\u591a\u4e3b\u673a\u3001\u591a\u4ece\u673a\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u8fd9\u4e24\u6839\u7ebf\u5206\u522b\u662f\uff1a<\/p>\n<ul>\n<li><strong>SCL\uff08Serial Clock\uff09<\/strong>\uff1a\u65f6\u949f\u7ebf\uff0c\u7531\u4e3b\u673a\u4ea7\u751f\u65f6\u949f\u4fe1\u53f7<\/li>\n<li><strong>SDA\uff08Serial Data\uff09<\/strong>\uff1a\u6570\u636e\u7ebf\uff0c\u7528\u4e8e\u4e3b\u4ece\u8bbe\u5907\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93<\/li>\n<\/ul>\n<p>\u4e00\u6761IIC\u603b\u7ebf\u4e0a\u53ef\u4ee5\u6302\u8f7d\u591a\u4e2a\u8bbe\u5907\uff0c\u6bcf\u4e2a\u8bbe\u5907\u90fd\u6709\u552f\u4e00\u7684\u5730\u5740\u3002<\/p>\n<p>\u8fd9\u79cd\u7b80\u6d01\u7684\u8bbe\u8ba1\u8ba9IIC\u603b\u7ebf\u5728\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\u5e7f\u53d7\u6b22\u8fce\uff0c\u7279\u522b\u662f\u5728PCB\u5e03\u7ebf\u7a7a\u95f4\u6709\u9650\u7684\u573a\u666f\u4e0b\u3002<\/p>\n<p>\u4f46\u95ee\u9898\u6765\u4e86\uff1a\u591a\u4e2a\u8bbe\u5907\u5171\u7528\u540c\u4e00\u6839\u6570\u636e\u7ebf\u548c\u65f6\u949f\u7ebf\uff0c\u5b83\u4eec\u662f\u5982\u4f55\u907f\u514d\u51b2\u7a81\u7684\u5462\uff1f\u8fd9\u5c31\u8981\u8bf4\u5230IIC\u603b\u7ebf\u786c\u4ef6\u8bbe\u8ba1\u7684\u6838\u5fc3\u673a\u5236\u4e86\u3002<\/p>\n<h2>2. \u5f00\u6f0f\u8f93\u51fa\uff1aIIC\u603b\u7ebf\u7684\u7075\u9b42<\/h2>\n<h3>2.1 \u4ec0\u4e48\u662f\u5f00\u6f0f\u8f93\u51fa<\/h3>\n<p>\u5f00\u6f0f\u8f93\u51fa\uff08Open-Drain\uff09\u662fIIC\u603b\u7ebf\u6700\u6838\u5fc3\u7684\u786c\u4ef6\u7279\u6027\u3002<\/p>\n<p>\u8981\u7406\u89e3\u5f00\u6f0f\u8f93\u51fa\uff0c\u6211\u4eec\u5148\u6765\u770b\u770b\u5e38\u89c1\u7684GPIO\u8f93\u51fa\u6a21\u5f0f\u3002<\/p>\n<p>\u5728\u666e\u901a\u7684\u63a8\u633d\u8f93\u51fa\uff08Push-Pull\uff09\u6a21\u5f0f\u4e0b\uff0cGPIO\u5f15\u811a\u53ef\u4ee5\u4e3b\u52a8\u8f93\u51fa\u9ad8\u7535\u5e73\uff08\u901a\u8fc7\u4e0a\u7ba1\u5bfc\u901a\uff09\u6216\u4f4e\u7535\u5e73\uff08\u901a\u8fc7\u4e0b\u7ba1\u5bfc\u901a\uff09\u3002<\/p>\n<p>\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u5f15\u811a\u80fd\u591f\u63d0\u4f9b\u8f83\u5f3a\u7684\u9a71\u52a8\u80fd\u529b\uff0c\u4f46\u6709\u4e2a\u81f4\u547d\u95ee\u9898\uff1a\u5982\u679c\u4e24\u4e2a\u63a8\u633d\u8f93\u51fa\u7684\u5f15\u811a\u8fde\u63a5\u5728\u4e00\u8d77\uff0c\u4e00\u4e2a\u8f93\u51fa\u9ad8\u7535\u5e73\uff0c\u53e6\u4e00\u4e2a\u8f93\u51fa\u4f4e\u7535\u5e73\uff0c\u5c31\u4f1a\u9020\u6210\u77ed\u8def\uff0c\u53ef\u80fd\u70e7\u6bc1\u82af\u7247\u3002<\/p>\n<p>\u800c\u5f00\u6f0f\u8f93\u51fa\u5219\u4e0d\u540c\uff0c\u5b83\u7684\u5185\u90e8\u7ed3\u6784\u53ea\u6709\u4e00\u4e2a\u4e0b\u62c9\u7684NMOS\u7ba1\uff0c\u6ca1\u6709\u4e0a\u62c9\u7684PMOS\u7ba1\u3002\u8fd9\u610f\u5473\u7740\uff1a<\/p>\n<ul>\n<li>\u5f53GPIO\u8f93\u51fa\u4f4e\u7535\u5e73\u65f6\uff0cNMOS\u7ba1\u5bfc\u901a\uff0c\u5f15\u811a\u88ab\u62c9\u5230\u5730\uff08GND\uff09\uff0c\u5448\u73b0\u4f4e\u7535\u5e73<\/li>\n<li>\u5f53GPIO\u8f93\u51fa\u9ad8\u7535\u5e73\u65f6\uff0cNMOS\u7ba1\u622a\u6b62\uff0c\u5f15\u811a\u5448\u73b0\u9ad8\u963b\u6001\uff08\u65e2\u4e0d\u8f93\u51fa\u9ad8\u4e5f\u4e0d\u8f93\u51fa\u4f4e\uff09<\/li>\n<\/ul>\n<p>\u8fd9\u79cd&#8221;\u53ea\u80fd\u62c9\u4f4e\uff0c\u4e0d\u80fd\u62c9\u9ad8&#8221;\u7684\u7279\u6027\uff0c\u6b63\u662f\u5f00\u6f0f\u8f93\u51fa\u7684\u7cbe\u9ad3\u6240\u5728\u3002<\/p>\n<h3>2.2 \u5f00\u6f0f\u8f93\u51fa\u7684\u4f18\u52bf<\/h3>\n<p>\u4f60\u53ef\u80fd\u4f1a\u95ee\uff1a\u53ea\u80fd\u62c9\u4f4e\u4e0d\u80fd\u62c9\u9ad8\uff0c\u8fd9\u4e0d\u662f\u5f88\u9e21\u808b\u5417\uff1f\u6070\u6070\u76f8\u53cd\uff0c\u8fd9\u6b63\u662fIIC\u603b\u7ebf\u80fd\u591f\u5b9e\u73b0\u591a\u8bbe\u5907\u5171\u4eab\u603b\u7ebf\u7684\u5173\u952e\u3002<\/p>\n<p><strong>\u7b2c\u4e00\u4e2a\u4f18\u52bf\uff1a\u7ebf\u4e0e\u903b\u8f91<\/strong><\/p>\n<p>\u591a\u4e2a\u5f00\u6f0f\u8f93\u51fa\u8fde\u63a5\u5728\u540c\u4e00\u6839\u7ebf\u4e0a\u65f6\uff0c\u4f1a\u5f62\u6210&#8221;\u7ebf\u4e0e&#8221;\uff08Wired-AND\uff09\u903b\u8f91\u3002<\/p>\n<p>\u53ea\u8981\u6709\u4efb\u4f55\u4e00\u4e2a\u8bbe\u5907\u8f93\u51fa\u4f4e\u7535\u5e73\uff0c\u6574\u6761\u603b\u7ebf\u5c31\u662f\u4f4e\u7535\u5e73\uff1b\u53ea\u6709\u5f53\u6240\u6709\u8bbe\u5907\u90fd\u8f93\u51fa\u9ad8\u963b\u6001\u65f6\uff0c\u603b\u7ebf\u624d\u80fd\u88ab\u4e0a\u62c9\u7535\u963b\u62c9\u5230\u9ad8\u7535\u5e73\u3002<\/p>\n<p>\u8fd9\u79cd\u7279\u6027\u5728IIC\u603b\u7ebf\u4e2d\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<p>\u6bd4\u5982\u5728\u591a\u4e3b\u673a\u7cfb\u7edf\u4e2d\uff0c\u5982\u679c\u4e24\u4e2a\u4e3b\u673a\u540c\u65f6\u53d1\u9001\u6570\u636e\u4ea7\u751f\u51b2\u7a81\uff0c\u901a\u8fc7\u68c0\u6d4b\u603b\u7ebf\u7535\u5e73\uff0c\u4e3b\u673a\u53ef\u4ee5\u53d1\u73b0\u51b2\u7a81\u5e76\u8fdb\u884c\u4ef2\u88c1\u3002<\/p>\n<p>\u53d1\u9001&#8221;1&#8243;\u7684\u4e3b\u673a\u5982\u679c\u68c0\u6d4b\u5230\u603b\u7ebf\u4e3a&#8221;0&#8243;\uff0c\u5c31\u77e5\u9053\u6709\u5176\u4ed6\u4e3b\u673a\u5728\u53d1\u9001\u6570\u636e\uff0c\u4f1a\u4e3b\u52a8\u653e\u5f03\u603b\u7ebf\u63a7\u5236\u6743\u3002<\/p>\n<p><strong>\u7b2c\u4e8c\u4e2a\u4f18\u52bf\uff1a\u7535\u5e73\u8f6c\u6362<\/strong><\/p>\n<p>\u5f00\u6f0f\u8f93\u51fa\u914d\u5408\u4e0a\u62c9\u7535\u963b\uff0c\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u4e0d\u540c\u7535\u538b\u57df\u4e4b\u95f4\u7684\u7535\u5e73\u8f6c\u6362\u3002<\/p>\n<p>\u6bd4\u5982\u4e00\u4e2a3.3V\u7684MCU\u548c\u4e00\u4e2a5V\u7684\u4f20\u611f\u5668\u901a\u4fe1\uff0c\u53ea\u9700\u8981\u5c06\u4e0a\u62c9\u7535\u963b\u63a5\u52305V\u7535\u6e90\uff0c\u5c31\u80fd\u5b9e\u73b0\u7535\u5e73\u5339\u914d\u3002<\/p>\n<p>3.3V\u7684MCU\u8f93\u51fa\u4f4e\u7535\u5e73\u65f6\u53ef\u4ee5\u5c06\u603b\u7ebf\u62c9\u4f4e\uff0c\u8f93\u51fa\u9ad8\u963b\u6001\u65f6\u603b\u7ebf\u88ab\u4e0a\u62c9\u52305V\uff0c\u8fd9\u4e2a5V\u7535\u5e73\u4e0d\u4f1a\u635f\u574fMCU\uff08\u56e0\u4e3aMCU\u5f15\u811a\u662f\u9ad8\u963b\u6001\uff0c\u6ca1\u6709\u7535\u6d41\u6d41\u5165\uff09\u3002<\/p>\n<p><strong>\u7b2c\u4e09\u4e2a\u4f18\u52bf\uff1a\u907f\u514d\u603b\u7ebf\u51b2\u7a81<\/strong><\/p>\n<p>\u5728\u63a8\u633d\u8f93\u51fa\u6a21\u5f0f\u4e0b\uff0c\u5982\u679c\u4e24\u4e2a\u8bbe\u5907\u540c\u65f6\u9a71\u52a8\u603b\u7ebf\uff0c\u4e00\u4e2a\u8f93\u51fa\u9ad8\u4e00\u4e2a\u8f93\u51fa\u4f4e\uff0c\u5c31\u4f1a\u9020\u6210\u77ed\u8def\u3002<\/p>\n<p>\u800c\u5f00\u6f0f\u8f93\u51fa\u6c38\u8fdc\u4e0d\u4f1a\u4e3b\u52a8\u8f93\u51fa\u9ad8\u7535\u5e73\uff0c\u6700\u591a\u53ea\u662f\u9ad8\u963b\u6001\uff0c\u56e0\u6b64\u4e0d\u4f1a\u4ea7\u751f\u77ed\u8def\u98ce\u9669\u3002<\/p>\n<h3>2.3 STM32\u4e2d\u7684\u5f00\u6f0f\u914d\u7f6e<\/h3>\n<p>\u5728STM32\u4e2d\u914d\u7f6eIIC\u5f15\u811a\u4e3a\u5f00\u6f0f\u8f93\u51fa\u975e\u5e38\u7b80\u5355\u3002<\/p>\n<p>\u4f7f\u7528HAL\u5e93\u7684\u8bdd\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"c\">void MX_I2C1_Init(void)\n{\n    GPIO_InitTypeDef GPIO_InitStruct = {0};\n    \n    \/* \u4f7f\u80fdGPIOB\u65f6\u949f *\/\n    __HAL_RCC_GPIOB_CLK_ENABLE();\n    \n    \/* \u914d\u7f6eIIC\u5f15\u811a\uff1aPB6(SCL), PB7(SDA) *\/\n    GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7;\n    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;  \/\/ \u590d\u7528\u5f00\u6f0f\u8f93\u51fa\n    GPIO_InitStruct.Pull = GPIO_NOPULL;      \/\/ \u4e0d\u4f7f\u7528\u5185\u90e8\u4e0a\u4e0b\u62c9\n    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;\n    GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;\n    HAL_GPIO_Init(GPIOB, &amp;GPIO_InitStruct);\n    \n    \/* \u914d\u7f6eIIC\u5916\u8bbe *\/\n    hi2c1.Instance = I2C1;\n    hi2c1.Init.ClockSpeed = 100000;  \/\/ 100kHz\u6807\u51c6\u901f\u7387\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    HAL_I2C_Init(&amp;hi2c1);\n}<\/code><\/pre>\n<p>\u6ce8\u610f\u4ee3\u7801\u4e2d\u7684 <code>GPIO_MODE_AF_OD<\/code>\uff0c\u8fd9\u5c31\u662f\u914d\u7f6e\u4e3a\u590d\u7528\u529f\u80fd\u7684\u5f00\u6f0f\u8f93\u51fa\u6a21\u5f0f\u3002<\/p>\n<p>\u540c\u65f6 <code>GPIO_NOPULL<\/code> \u8868\u793a\u4e0d\u4f7f\u7528\u82af\u7247\u5185\u90e8\u7684\u4e0a\u4e0b\u62c9\u7535\u963b\uff0c\u56e0\u4e3a\u6211\u4eec\u9700\u8981\u5916\u90e8\u4e0a\u62c9\u7535\u963b\u3002<\/p>\n<h2>3. \u4e0a\u62c9\u7535\u963b\uff1a\u5f00\u6f0f\u8f93\u51fa\u7684\u6700\u4f73\u62cd\u6863<\/h2>\n<h3>3.1 \u4e3a\u4ec0\u4e48\u9700\u8981\u4e0a\u62c9\u7535\u963b<\/h3>\n<p>\u524d\u9762\u63d0\u5230\uff0c\u5f00\u6f0f\u8f93\u51fa\u53ea\u80fd\u62c9\u4f4e\u7535\u5e73\uff0c\u4e0d\u80fd\u4e3b\u52a8\u8f93\u51fa\u9ad8\u7535\u5e73\u3002<\/p>\n<p>\u90a3\u4e48\u9ad8\u7535\u5e73\u4ece\u54ea\u91cc\u6765\u5462\uff1f\u7b54\u6848\u5c31\u662f\u4e0a\u62c9\u7535\u963b\u3002<\/p>\n<p>\u4e0a\u62c9\u7535\u963b\u4e00\u7aef\u8fde\u63a5\u5230\u7535\u6e90\uff08\u901a\u5e38\u662fVCC\uff09\uff0c\u53e6\u4e00\u7aef\u8fde\u63a5\u5230IIC\u603b\u7ebf\u3002<\/p>\n<p>\u5f53\u6240\u6709\u8bbe\u5907\u7684\u5f00\u6f0f\u8f93\u51fa\u90fd\u5904\u4e8e\u9ad8\u963b\u6001\u65f6\uff0c\u4e0a\u62c9\u7535\u963b\u4f1a\u5c06\u603b\u7ebf&#8221;\u62c9&#8221;\u5230\u9ad8\u7535\u5e73\u3002<\/p>\n<p>\u5f53\u4efb\u4f55\u4e00\u4e2a\u8bbe\u5907\u8f93\u51fa\u4f4e\u7535\u5e73\u65f6\uff0c\u7531\u4e8e\u4f4e\u7535\u5e73\u7684\u9a71\u52a8\u80fd\u529b\u8fdc\u5f3a\u4e8e\u4e0a\u62c9\u7535\u963b\uff0c\u603b\u7ebf\u4f1a\u88ab\u62c9\u5230\u4f4e\u7535\u5e73\u3002<\/p>\n<p>\u53ef\u4ee5\u628a\u4e0a\u62c9\u7535\u963b\u60f3\u8c61\u6210\u4e00\u6839\u5f39\u7c27\uff0c\u603b\u662f\u8bd5\u56fe\u628a\u603b\u7ebf\u62c9\u5230\u9ad8\u7535\u5e73\u3002<\/p>\n<p>\u800c\u5f00\u6f0f\u8f93\u51fa\u5c31\u50cf\u4e00\u53ea\u624b\uff0c\u9700\u8981\u7684\u65f6\u5019\u53ef\u4ee5\u628a\u603b\u7ebf\u6309\u4e0b\u53bb\uff08\u62c9\u4f4e\uff09\uff0c\u677e\u5f00\u624b\uff08\u9ad8\u963b\u6001\uff09\u65f6\u5f39\u7c27\u5c31\u4f1a\u628a\u603b\u7ebf\u5f39\u56de\u9ad8\u7535\u5e73\u3002<\/p>\n<h3>3.2 \u4e0a\u62c9\u7535\u963b\u7684\u963b\u503c\u9009\u62e9<\/h3>\n<p>\u4e0a\u62c9\u7535\u963b\u7684\u963b\u503c\u9009\u62e9\u662f\u4e2a\u6280\u672f\u6d3b\uff0c\u9009\u5927\u4e86\u9009\u5c0f\u4e86\u90fd\u4e0d\u884c\u3002<\/p>\n<p><strong>\u963b\u503c\u592a\u5c0f\u7684\u95ee\u9898\uff1a<\/strong><\/p>\n<p>\u5982\u679c\u4e0a\u62c9\u7535\u963b\u592a\u5c0f\uff08\u6bd4\u59821k\u03a9\uff09\uff0c\u867d\u7136\u53ef\u4ee5\u63d0\u4f9b\u5f88\u5f3a\u7684\u4e0a\u62c9\u80fd\u529b\uff0c\u4f46\u4f1a\u5e26\u6765\u4e24\u4e2a\u95ee\u9898\uff1a<\/p>\n<ol>\n<li>\u529f\u8017\u589e\u52a0\u3002\u5f53\u603b\u7ebf\u88ab\u62c9\u4f4e\u65f6\uff0c\u4f1a\u6709\u8f83\u5927\u7684\u7535\u6d41\u4eceVCC\u7ecf\u8fc7\u4e0a\u62c9\u7535\u963b\u6d41\u5411GND\uff0c\u8ba1\u7b97\u516c\u5f0f\u4e3a<em>I<\/em>=V<em>CC<\/em>\/<em>Rpullup<\/em>\u3002\u4ee53.3V\u7cfb\u7edf\u4e3a\u4f8b\uff0c1k\u03a9\u7535\u963b\u4f1a\u4ea7\u751f3.3mA\u7684\u7535\u6d41\uff0c\u5728\u4f4e\u529f\u8017\u5e94\u7528\u4e2d\u8fd9\u662f\u4e0d\u53ef\u63a5\u53d7\u7684\u3002<\/li>\n<li>\u589e\u52a0\u9a71\u52a8\u8d1f\u62c5\u3002\u5f00\u6f0f\u8f93\u51fa\u9700\u8981\u5438\u6536\u66f4\u5927\u7684\u7535\u6d41\u624d\u80fd\u5c06\u603b\u7ebf\u62c9\u4f4e\uff0c\u53ef\u80fd\u8d85\u51fa\u82af\u7247\u7684\u9a71\u52a8\u80fd\u529b\u3002<\/li>\n<\/ol>\n<p><strong>\u963b\u503c\u592a\u5927\u7684\u95ee\u9898\uff1a<\/strong><\/p>\n<p>\u5982\u679c\u4e0a\u62c9\u7535\u963b\u592a\u5927\uff08\u6bd4\u5982100k\u03a9\uff09\uff0c\u4e0a\u62c9\u80fd\u529b\u4f1a\u53d8\u5f31\uff0c\u5e26\u6765\u7684\u95ee\u9898\u662f\uff1a<\/p>\n<ol>\n<li>\u4e0a\u5347\u6cbf\u53d8\u6162\u3002\u603b\u7ebf\u7535\u5bb9\uff08\u5305\u62ec\u8d70\u7ebf\u7535\u5bb9\u3001\u5f15\u811a\u7535\u5bb9\u7b49\uff09\u9700\u8981\u901a\u8fc7\u4e0a\u62c9\u7535\u963b\u5145\u7535\u624d\u80fd\u4ece\u4f4e\u7535\u5e73\u53d8\u4e3a\u9ad8\u7535\u5e73\u3002\u963b\u503c\u8d8a\u5927\uff0c\u5145\u7535\u65f6\u95f4\u8d8a\u957f\uff0c\u4e0a\u5347\u6cbf\u8d8a\u6162\u3002\u65f6\u95f4\u5e38\u6570\u53ef\u4ee5\u7528 <em>\u03c4<\/em>=<em>R<\/em>\u00d7<em>C<\/em> \u8ba1\u7b97\u3002<\/li>\n<li>\u6297\u5e72\u6270\u80fd\u529b\u4e0b\u964d\u3002\u8f83\u5f31\u7684\u4e0a\u62c9\u80fd\u529b\u4f7f\u5f97\u603b\u7ebf\u66f4\u5bb9\u6613\u53d7\u5230\u5916\u90e8\u5e72\u6270\u7684\u5f71\u54cd\u3002<\/li>\n<\/ol>\n<p><strong>\u5408\u9002\u7684\u963b\u503c\u8303\u56f4\uff1a<\/strong><\/p>\n<p>\u4e00\u822c\u6765\u8bf4\uff0cIIC\u603b\u7ebf\u7684\u4e0a\u62c9\u7535\u963b\u63a8\u8350\u8303\u56f4\u662f\uff1a<\/p>\n<ul>\n<li>\u6807\u51c6\u901f\u7387\uff08100kHz\uff09\uff1a4.7k\u03a9 ~ 10k\u03a9<\/li>\n<li>\u5feb\u901f\u6a21\u5f0f\uff08400kHz\uff09\uff1a2.2k\u03a9 ~ 4.7k\u03a9<\/li>\n<li>\u9ad8\u901f\u6a21\u5f0f\uff083.4MHz\uff09\uff1a\u9700\u8981\u66f4\u7cbe\u786e\u7684\u8ba1\u7b97\uff0c\u901a\u5e38\u57281k\u03a9\u5de6\u53f3<\/li>\n<\/ul>\n<p>\u6700\u5e38\u7528\u7684\u503c\u662f4.7k\u03a9\uff0c\u8fd9\u662f\u4e00\u4e2a\u7ecf\u8fc7\u5b9e\u8df5\u68c0\u9a8c\u7684\u7ecf\u9a8c\u503c\uff0c\u5728\u5927\u591a\u6570\u5e94\u7528\u573a\u666f\u4e0b\u90fd\u80fd\u826f\u597d\u5de5\u4f5c\u3002<\/p>\n<h3>3.3 \u4e0a\u62c9\u7535\u963b\u7684\u8ba1\u7b97\u65b9\u6cd5<\/h3>\n<p>\u5982\u679c\u4f60\u60f3\u7cbe\u786e\u8ba1\u7b97\u4e0a\u62c9\u7535\u963b\u7684\u963b\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u516c\u5f0f\u3002\u9996\u5148\u9700\u8981\u786e\u5b9a\u603b\u7ebf\u7535\u5bb9 <em>Cbus<\/em>\uff0c\u5b83\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u8d70\u7ebf\u7535\u5bb9\uff08\u7ea610pF\/cm\uff09<\/li>\n<li>\u6bcf\u4e2a\u8bbe\u5907\u7684\u5f15\u811a\u7535\u5bb9\uff08\u6570\u636e\u624b\u518c\u4f1a\u6807\u660e\uff0c\u901a\u5e385~10pF\uff09<\/li>\n<li>\u5176\u4ed6\u5bc4\u751f\u7535\u5bb9<\/li>\n<\/ul>\n<p>\u5047\u8bbeIIC\u603b\u7ebf\u65f6\u949f\u9891\u7387\u4e3a <em>fSCL<\/em>\uff0c\u4e0a\u5347\u65f6\u95f4\u8981\u6c42\u4e3atr<\/p>\n<p>\uff08\u6807\u51c6\u6a21\u5f0f\u4e0b\u6700\u59271000ns\uff0c\u5feb\u901f\u6a21\u5f0f\u4e0b\u6700\u5927300ns\uff09\uff0c\u5219\u4e0a\u62c9\u7535\u963b\u7684\u6700\u5927\u503c\u4e3a\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000047581873\" alt=\"\" title=\"\"><\/p>\n<p>\u540c\u65f6\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u8db3\u591f\u7684\u9a71\u52a8\u80fd\u529b\uff0c\u4e0a\u62c9\u7535\u963b\u7684\u6700\u5c0f\u503c\u9700\u8981\u6ee1\u8db3\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000047581874\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u5176\u4e2d <em>VOL<\/em>(<em>max<\/em>) \u662f\u8f93\u51fa\u4f4e\u7535\u5e73\u7684\u6700\u5927\u503c\uff08\u901a\u5e380.4V\uff09\uff0c<em>IOL<\/em>\u662f\u5f00\u6f0f\u8f93\u51fa\u7684\u6700\u5927\u5438\u6536\u7535\u6d41\uff08\u67e5\u9605\u82af\u7247\u624b\u518c\uff09\u3002<\/p>\n<p>\u4e3e\u4e2a\u5b9e\u9645\u4f8b\u5b50\uff0c\u5047\u8bbe\uff1a<\/p>\n<ul>\n<li>\u603b\u7ebf\u7535\u5bb9 <em>Cbus<\/em>=100<em>pF<\/em><\/li>\n<li>\u4e0a\u5347\u65f6\u95f4\u8981\u6c42 <em>tr<\/em>=1000<em>ns<\/em>\uff08\u6807\u51c6\u6a21\u5f0f\uff09<\/li>\n<li>\u7535\u6e90\u7535\u538b <em>VCC<\/em>=3.3<em>V<\/em><\/li>\n<li>\u6700\u5927\u5438\u6536\u7535\u6d41 <em>IOL<\/em>=3<em>mA<\/em><\/li>\n<\/ul>\n<p>\u5219\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000047581875\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u56e0\u6b64\u4e0a\u62c9\u7535\u963b\u5e94\u8be5\u9009\u62e9\u57281k\u03a9\u523011.8k\u03a9\u4e4b\u95f4\uff0c\u9009\u62e94.7k\u03a9\u662f\u975e\u5e38\u5408\u9002\u7684\u3002<\/p>\n<h3>3.4 \u591a\u4e2a\u4e0a\u62c9\u7535\u963b\u5e76\u8054\u7684\u60c5\u51b5<\/h3>\n<p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6709\u65f6\u5019\u4f1a\u9047\u5230\u591a\u4e2a\u6a21\u5757\u90fd\u5e26\u6709\u4e0a\u62c9\u7535\u963b\u7684\u60c5\u51b5\u3002<\/p>\n<p>\u6bd4\u5982\u4f60\u7684\u4e3b\u677f\u4e0a\u6709\u4e0a\u62c9\u7535\u963b\uff0c\u5916\u63a5\u7684\u4f20\u611f\u5668\u6a21\u5757\u4e0a\u4e5f\u6709\u4e0a\u62c9\u7535\u963b\u3002<\/p>\n<p>\u8fd9\u65f6\u5019\u591a\u4e2a\u7535\u963b\u4f1a\u5e76\u8054\uff0c\u7b49\u6548\u7535\u963b\u4f1a\u53d8\u5c0f\u3002<\/p>\n<p>\u4e24\u4e2a\u7535\u963b\u5e76\u8054\u7684\u7b49\u6548\u7535\u963b\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000047581876\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u6bd4\u5982\u4e24\u4e2a4.7k\u03a9\u7684\u7535\u963b\u5e76\u8054\uff0c\u7b49\u6548\u7535\u963b\u4e3a\uff1a<\/p>\n<p><img decoding=\"async\"   referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000047581877\" alt=\"\" title=\"\" loading=\"lazy\"><\/p>\n<p>\u8fd9\u4e2a\u503c\u4ecd\u7136\u5728\u5408\u7406\u8303\u56f4\u5185\uff0c\u4f46\u5982\u679c\u5e76\u8054\u7684\u7535\u963b\u592a\u591a\uff0c\u7b49\u6548\u7535\u963b\u53ef\u80fd\u4f1a\u8fc7\u5c0f\uff0c\u5bfc\u81f4\u529f\u8017\u589e\u52a0\u3002<\/p>\n<p>\u56e0\u6b64\u5728\u8bbe\u8ba1\u65f6\uff0c\u5efa\u8bae\u53ea\u5728\u4e3b\u677f\u4e0a\u653e\u7f6e\u4e0a\u62c9\u7535\u963b\uff0c\u5916\u63a5\u6a21\u5757\u4e0a\u4e0d\u8981\u518d\u52a0\u4e0a\u62c9\u7535\u963b\u3002<\/p>\n<p>\u5982\u679c\u6a21\u5757\u5df2\u7ecf\u6709\u4e0a\u62c9\u7535\u963b\uff0c\u53ef\u4ee5\u8003\u8651\u75280\u6b27\u7535\u963b\u6216\u8df3\u7ebf\u5e3d\u6765\u9009\u62e9\u6027\u5730\u542f\u7528\u3002<\/p>\n<h2>4. \u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u6ce8\u610f\u4e8b\u9879<\/h2>\n<h3>4.1 \u4e0a\u62c9\u7535\u963b\u7684\u4f4d\u7f6e<\/h3>\n<p>\u4e0a\u62c9\u7535\u963b\u5e94\u8be5\u5c3d\u91cf\u9760\u8fd1\u4e3b\u63a7\u82af\u7247\u653e\u7f6e\uff0c\u800c\u4e0d\u662f\u5206\u6563\u5728\u5404\u4e2a\u4ece\u8bbe\u5907\u9644\u8fd1\u3002<\/p>\n<p>\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u603b\u7ebf\u7684\u5bc4\u751f\u7535\u5bb9\uff0c\u63d0\u9ad8\u4fe1\u53f7\u8d28\u91cf\u3002<\/p>\n<p>\u5728\u591a\u5c42PCB\u4e2d\uff0c\u5efa\u8bae\u5c06IIC\u8d70\u7ebf\u653e\u5728\u5185\u5c42\uff0c\u5e76\u5728\u4e0b\u65b9\u94fa\u8bbe\u5b8c\u6574\u7684\u5730\u5e73\u9762\uff0c\u4ee5\u51cf\u5c11\u5e72\u6270\u3002<\/p>\n<h3>4.2 \u957f\u8ddd\u79bb\u4f20\u8f93\u7684\u8003\u8651<\/h3>\n<p>IIC\u603b\u7ebf\u672c\u6765\u662f\u4e3a\u677f\u7ea7\u901a\u4fe1\u8bbe\u8ba1\u7684\uff0c\u4f20\u8f93\u8ddd\u79bb\u901a\u5e38\u5728\u51e0\u5398\u7c73\u5230\u51e0\u5341\u5398\u7c73\u4e4b\u95f4\u3002<\/p>\n<p>\u5982\u679c\u9700\u8981\u957f\u8ddd\u79bb\u4f20\u8f93\uff08\u8d85\u8fc71\u7c73\uff09\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\uff1a<\/p>\n<ol>\n<li>\u964d\u4f4e\u901a\u4fe1\u901f\u7387\uff0c\u6bd4\u5982\u4ece400kHz\u964d\u5230100kHz\u751a\u81f3\u66f4\u4f4e<\/li>\n<li>\u4f7f\u7528\u66f4\u5c0f\u7684\u4e0a\u62c9\u7535\u963b\uff08\u4f46\u4e0d\u8981\u5c0f\u4e8e\u6700\u5c0f\u503c\uff09<\/li>\n<li>\u8003\u8651\u4f7f\u7528IIC\u603b\u7ebf\u6269\u5c55\u82af\u7247\u6216\u5dee\u5206\u4fe1\u53f7\u65b9\u6848<\/li>\n<li>\u589e\u52a0\u6ee4\u6ce2\u7535\u5bb9\uff0c\u63d0\u9ad8\u6297\u5e72\u6270\u80fd\u529b<\/li>\n<\/ol>\n<h3>4.3 \u8c03\u8bd5\u6280\u5de7<\/h3>\n<p>\u5728\u8c03\u8bd5IIC\u901a\u4fe1\u95ee\u9898\u65f6\uff0c\u53ef\u4ee5\u7528\u793a\u6ce2\u5668\u89c2\u5bdfSCL\u548cSDA\u4fe1\u53f7\u3002\u6b63\u5e38\u60c5\u51b5\u4e0b\u5e94\u8be5\u770b\u5230\uff1a<\/p>\n<ol>\n<li>\u9ad8\u7535\u5e73\u63a5\u8fd1VCC\uff0c\u4f4e\u7535\u5e73\u63a5\u8fd10V<\/li>\n<li>\u4e0a\u5347\u6cbf\u5448\u6307\u6570\u66f2\u7ebf\uff08RC\u5145\u7535\u66f2\u7ebf\uff09\uff0c\u4e0b\u964d\u6cbf\u9661\u5ced<\/li>\n<li>\u6ca1\u6709\u660e\u663e\u7684\u632f\u94c3\u6216\u8fc7\u51b2<\/li>\n<\/ol>\n<p>\u5982\u679c\u4e0a\u5347\u6cbf\u592a\u6162\uff0c\u8bf4\u660e\u4e0a\u62c9\u7535\u963b\u592a\u5927\u6216\u603b\u7ebf\u7535\u5bb9\u592a\u5927\uff1b\u5982\u679c\u6709\u632f\u94c3\uff0c\u53ef\u80fd\u9700\u8981\u589e\u52a0\u4e32\u8054\u7535\u963b\u6216\u5e76\u8054\u7535\u5bb9\u8fdb\u884c\u963b\u5c3c\u3002<\/p>\n<h3>4.4 \u8f6f\u4ef6\u6a21\u62dfIIC\u7684\u914d\u7f6e<\/h3>\n<p>\u6709\u65f6\u5019\u6211\u4eec\u9700\u8981\u7528GPIO\u6a21\u62dfIIC\uff08\u6bd4\u5982\u786c\u4ef6IIC\u5f15\u811a\u88ab\u5360\u7528\u4e86\uff09\uff0c\u8fd9\u65f6\u5019\u4e5f\u8981\u914d\u7f6e\u4e3a\u5f00\u6f0f\u8f93\u51fa\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"c\">\/* \u521d\u59cb\u5316\u6a21\u62dfIIC\u7684GPIO *\/\nvoid Soft_I2C_Init(void)\n{\n    GPIO_InitTypeDef GPIO_InitStruct = {0};\n    \n    __HAL_RCC_GPIOB_CLK_ENABLE();\n    \n    \/* \u914d\u7f6eSCL\u548cSDA\u4e3a\u5f00\u6f0f\u8f93\u51fa *\/\n    GPIO_InitStruct.Pin = I2C_SCL_PIN | I2C_SDA_PIN;\n    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;  \/\/ \u5f00\u6f0f\u8f93\u51fa\n    GPIO_InitStruct.Pull = GPIO_NOPULL;\n    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;\n    HAL_GPIO_Init(I2C_GPIO_PORT, &amp;GPIO_InitStruct);\n    \n    \/* \u521d\u59cb\u72b6\u6001\u8bbe\u4e3a\u9ad8\u7535\u5e73\uff08\u5b9e\u9645\u662f\u9ad8\u963b\u6001\uff09 *\/\n    HAL_GPIO_WritePin(I2C_GPIO_PORT, I2C_SCL_PIN, GPIO_PIN_SET);\n    HAL_GPIO_WritePin(I2C_GPIO_PORT, I2C_SDA_PIN, GPIO_PIN_SET);\n}\n\n\/* \u8bfb\u53d6SDA\u7535\u5e73 *\/\nuint8_t I2C_SDA_Read(void)\n{\n    return HAL_GPIO_ReadPin(I2C_GPIO_PORT, I2C_SDA_PIN);\n}\n\n\/* \u8bbe\u7f6eSDA\u4e3a\u4f4e\u7535\u5e73 *\/\nvoid I2C_SDA_Low(void)\n{\n    HAL_GPIO_WritePin(I2C_GPIO_PORT, I2C_SDA_PIN, GPIO_PIN_RESET);\n}\n\n\/* \u8bbe\u7f6eSDA\u4e3a\u9ad8\u7535\u5e73\uff08\u9ad8\u963b\u6001\uff09 *\/\nvoid I2C_SDA_High(void)\n{\n    HAL_GPIO_WritePin(I2C_GPIO_PORT, I2C_SDA_PIN, GPIO_PIN_SET);\n}<\/code><\/pre>\n<p>\u6ce8\u610f\u5728\u8bfb\u53d6SDA\u7535\u5e73\u65f6\uff0c\u8981\u5148\u5c06SDA\u8bbe\u4e3a\u9ad8\u963b\u6001\uff08\u8f93\u51fa\u9ad8\u7535\u5e73\uff09\uff0c\u7136\u540e\u518d\u8bfb\u53d6\u5f15\u811a\u72b6\u6001\u3002<\/p>\n<p>\u8fd9\u6837\u624d\u80fd\u6b63\u786e\u8bfb\u53d6\u4ece\u8bbe\u5907\u53d1\u9001\u7684\u5e94\u7b54\u4fe1\u53f7\u3002<\/p>\n<h2>5. \u603b\u7ed3<\/h2>\n<p>IIC\u603b\u7ebf\u7684\u786c\u4ef6\u8bbe\u8ba1\u770b\u4f3c\u7b80\u5355\uff0c\u5b9e\u5219\u8574\u542b\u7740\u7cbe\u5999\u7684\u8bbe\u8ba1\u601d\u60f3\u3002<\/p>\n<p>\u5f00\u6f0f\u8f93\u51fa\u548c\u4e0a\u62c9\u7535\u963b\u8fd9\u4e24\u4e2a\u5173\u952e\u70b9\uff0c\u5171\u540c\u6784\u6210\u4e86IIC\u603b\u7ebf\u591a\u8bbe\u5907\u5171\u4eab\u3001\u53cc\u5411\u901a\u4fe1\u7684\u57fa\u7840\u3002<\/p>\n<p>\u5f00\u6f0f\u8f93\u51fa\u63d0\u4f9b\u4e86&#8221;\u7ebf\u4e0e&#8221;\u903b\u8f91\uff0c\u4f7f\u5f97\u591a\u4e2a\u8bbe\u5907\u53ef\u4ee5\u5b89\u5168\u5730\u5171\u4eab\u540c\u4e00\u6839\u603b\u7ebf\uff0c\u907f\u514d\u4e86\u603b\u7ebf\u51b2\u7a81\u7684\u98ce\u9669\u3002<\/p>\n<p>\u800c\u4e0a\u62c9\u7535\u963b\u5219\u4e3a\u5f00\u6f0f\u8f93\u51fa\u63d0\u4f9b\u4e86\u9ad8\u7535\u5e73\uff0c\u540c\u65f6\u8fd8\u80fd\u5b9e\u73b0\u7535\u5e73\u8f6c\u6362\u3001\u9650\u5236\u7535\u6d41\u7b49\u529f\u80fd\u3002<\/p>\n<p>\u4e24\u8005\u914d\u5408\uff0c\u624d\u80fd\u8ba9IIC\u603b\u7ebf\u7a33\u5b9a\u53ef\u9760\u5730\u5de5\u4f5c\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6b63\u786e\u9009\u62e9\u4e0a\u62c9\u7535\u963b\u7684\u963b\u503c\u3001\u5408\u7406\u5e03\u5c40PCB\u3001\u6ce8\u610f\u4fe1\u53f7\u5b8c\u6574\u6027\uff0c\u90fd\u662f\u4fdd\u8bc1IIC\u901a\u4fe1\u8d28\u91cf\u7684\u5173\u952e\u3002<\/p>\n<p>\u5e0c\u671b\u901a\u8fc7\u4eca\u5929\u7684\u8bb2\u89e3\uff0c\u80fd\u8ba9\u5927\u5bb6\u5bf9IIC\u603b\u7ebf\u6709\u66f4\u6df1\u5165\u7684\u7406\u89e3\uff0c\u5728\u4ee5\u540e\u7684\u9879\u76ee\u4e2d\u5c11\u8d70\u5f2f\u8def\u3002<\/p>\n<p>\u5982\u679c\u4f60\u5728\u4f7f\u7528IIC\u603b\u7ebf\u65f6\u9047\u5230\u901a\u4fe1\u4e0d\u7a33\u5b9a\u3001\u901f\u7387\u4e0a\u4e0d\u53bb\u7b49\u95ee\u9898\uff0c\u4e0d\u59a8\u4ece\u786c\u4ef6\u5c42\u9762\u5165\u624b\uff0c\u68c0\u67e5\u4e00\u4e0b\u662f\u4e0d\u662f\u5f00\u6f0f\u8f93\u51fa\u914d\u7f6e\u4e0d\u5bf9\uff0c\u6216\u8005\u4e0a\u62c9\u7535\u963b\u9009\u62e9\u4e0d\u5408\u9002\u3002<\/p>\n<p>\u5f88\u591a\u65f6\u5019\uff0c\u786c\u4ef6\u95ee\u9898\u6bd4\u8f6f\u4ef6\u95ee\u9898\u66f4\u9690\u853d\uff0c\u4f46\u4e00\u65e6\u627e\u5230\u6839\u6e90\uff0c\u89e3\u51b3\u8d77\u6765\u53cd\u800c\u66f4\u7b80\u5355\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=iftgjoqQMv2Ww6kAxWiR%2BQ%3D%3D.I89iHdOzVIV%2BDqGM8z6J7IYDPjCw9gAP9KRJMEWcEH3ImtYtCfooGnVcVRAj9Lv0KR63nw%2FNiUgjg0IXwg0GJA%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=FepXxddfekgkCs3Pn77nmg%3D%3D.Z0Qyfio%2FC1c%2F2GrNJh%2FPn54hRNcG9ogBlxk7pqgvn5Dw%2FOuvlNDkewdQ7zba5%2BpkXN86IIlizh5bVKHU%2FA2N6g%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=zcI%2FxqW0WsjBXZD1q4OccQ%3D%3D.XzyezbZu9RBAJBAW6K3czupIYAHI8r7F69gmTKq4h5XMIXkJby2K3eI9Vu5YjoiSxRo3QOIIYjMh56oeBAx9qUt7XTABujCNop%2B0dU1pdzA%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=EbdZdl1XGH2xcCl25Vk66Q%3D%3D.vZdpT%2FokRfYsc9d%2Fd0VbDF7%2B%2B9TfnzCvQoUghRzbFR2vrM%2F8DWZtdMbVRkvT4tCsRkG1OXZpfk7HsWLmsWFvIQ%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=fVH6TAQOCrTRRBl5FjrcnA%3D%3D.3tR%2Bk3J3Yyt7zKN%2Bb1cGToSuev99xz20U2bknftj4cH9wK8PNPyId88OdVEeTfINdhedhf9i6xHGn8Bd2zch%2Fw%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=lxwUkECAMZbyIwL4UOu3VQ%3D%3D.0bVMMHFYo8t2C4OKwQunLEzxqr%2FG7JCMCnVznZ2ytVWvGBEPam7l%2BqsUw%2FEH3hDVxOIAkqarqUNsrtBXIk2YSg%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=f3kaKqA1hEFAkeaje%2BtCzQ%3D%3D.Wq7jr2DfZR43PrfXkbPzqAXzRevY7ysRfI%2Fvi%2Ff2v7kfChiIzKHkjh5z5D%2BrCPnvpw4sdcv%2FOmItAaIrg4v7lg%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=bwVKMb%2B9F9qAF2NLyckrdA%3D%3D.0vXlc2PyPJec9WyT%2BNHrHYugNzapxIVwZrgz036uqB30rHNDPH7TXFX2Qk51qcuugG9ojl%2F9jCJSMbSHe7Nugg%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=jyzDDtlnwIQy5yc3Etz00Q%3D%3D.fgkVk9KPGXt34doAxa74UzOnogvRiG0Q9PFpnjNAKbhVEQzkDK4CGb%2Fl2%2FuIecqbLhxuHnyWvyH64UmC0%2FgEd4eq%2BGrqpz1eCx4F0InZgDM%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=oCMtw58w8uD5ShdLuNnA7w%3D%3D.QdTFFxpBy3gR%2BmEFEZFnxfbg19DKYpDNYD3l7vnkuP%2FBvXvHvD8Cb8b%2FLb8l%2Fu12G66nW%2B8Ui%2FA7Ji5QNdqFSlich32Gy9abdQAQCDgVMpE%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=wrl1DEK%2FaRV9J3ZRrJxBLw%3D%3D.u7u%2BInaRnEsz0%2Fb8igQbnQgQPF%2BiVq4PWAK3pfegtllMxOEu4B8z%2FssWowc2VCrcdfKv1l%2BJqfZDWcDZ2XFvETH0uUyV2jhGl%2FCPwtxqV4w%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=sIM%2BcChfWcX%2BlCRYC2AhPg%3D%3D.WsO8lp59UCVGtD5WUZG6tFvhH1sZB5nxKIV5%2FHuqcFtopD2z5CThyPxFD%2BD0AWPHkS0dCfi93HfQQWqDhs6IMWEVXLckihSNUPA8TOdcL04%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=g3G1x7tkYMWkCcg%2BzW6bLg%3D%3D.MYMS0SGBMg4Gli3YFRBbrfVrXFd7mqDLl8%2BYjlLrvSuRcDSlSSnVDjJ85xNc3no%2B8cXAXBPRddKT7B8y561xqQ%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=WoXNze6XzZXAZ%2FDT9wTahw%3D%3D.Oln%2F7v49TFrR3ToC5Jh744pxnZjWW8LQ1Hs8gE1wbguD441qGL3Li%2B%2BbNZhqbS24ccfPTU8K%2FQe3Zv%2FNSML4fg%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=XG6Q%2BvJWKUF4IS3hI4LdAg%3D%3D.I9NATdRiVTFG%2Fk5vlwVoJyk457PF%2BtHqhJx2Aqi1FELsdQinDteTDoBQx%2BwwhVNg3DR4fY2SKwkqUzI35aWKR7tlnrs7YIoOoENWPj0zkf4%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\/1190000047581871\">https:\/\/segmentfault.com\/a\/1190000047581871<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5927\u5bb6\u597d\uff0c\u6211\u662f\u826f\u8bb8\u3002 \u5728\u5d4c\u5165\u5f0f\u5f00\u53d1\u4e2d\uff0cIIC\uff08I2C\uff09\u603b\u7ebf\u53ef\u4ee5\u8bf4\u662f\u6700\u5e38\u7528\u7684\u901a\u4fe1\u534f\u8bae\u4e4b\u4e00\u4e86\u3002 \u65e0\u8bba\u662f\u8bfb\u53d6\u4f20\u611f\u5668\u6570\u636e [&hellip;]<\/p>\n","protected":false},"author":8,"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-10021217","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\/10021217","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\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10021217"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10021217\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10021217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10021217"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10021217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}