STM32通过IO口模拟与DHT11实现串行通信，由于DHT11本身限制只能读出温度和湿度的整数位！-STM32 serial communication via IO port analog and DHT11, DHT11 itself due to restrictions only read integer bit temperature and humidity!

通过stm32 io口模拟串口,串口接收通过中断. 本代码会把发送给串口的数据,发送出来(Through the STM32 IO port, the serial port is received through the serial port, and the serial port is received through the interrupt. This code will send out the data sent to the serial port)

通过STM32F103单片机控制VL6180测距传感器测量距离，并通过串口将距离发送给上位机。本程序使用STM32片上外设IIC来通信，可以通过编程实现IO模拟IIC。(Control VL6180 to measure distance by using STM32F103, and send distance to host computer by USART. This Program using STM32's peripherals IIC for communication, we