激光雷达测距的源程序，通过激光扫描检测到障碍物的距离。-Laser radar range of the source, an obstacle is detected by laser scanning distance.

基于STM32的串口接收GP3D03-ZZ4激光测距模块的程序，采用状态机方式接收，通过判断标识符识别连续发送的串口数据-Based STM32 serial reception GP3D03-ZZ4 laser rangefinder module program, using the state machine receiving mode, by determining the identifier identifying the continuous transmission of se