* 1. 了解 I2C 总线的概念，认识 SDA 和 SCL 两条线。 * 2. 理解 I2C 设备地址的作用。 * 3. 学会安装 Adafruit SSD1306 和 Adafruit GFX 库。 * 4. 掌握在 OLED 上显示文字、数字和简单图形。

#define I2C_FMP_NOT_SUPPORTED 0xAAAA0000U /*!< Fast Mode Plus not supported */ #define I2C_FASTMODEPLUS_PB6 SYSCFG_CFGR1_I2C_PB6_FMP /*!< Enable Fast Mode Plus on PB6 */ #define I2C_FASTMODEPLUS_PB7 ...

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