SMT32演示，各个例子全在里面，比如IO口，中断，串口，I2C，SPI等-SMT32 presentation, various examples are all on the inside, such as IO ports, interrupts, serial, I2C, SPI, etc.

检测环境温度实验 stm32连接18ds20-18ds20 STM32F103 temperature sensor to obtain temperature examples of binary conversion