课程设计作业，无线测距的单片机程序，可用可供新手参考-Curriculum design work, wireless ranging microcontroller program, available for the newcomer reference

DHT无线通信学习板，实现超声波测距要求，希望大家多多分享。欢迎大家指正。-DHT wireless communications board to learn, to achieve ultrasonic ranging requirements, we hope to share. Welcome to correct me.