arm debug arm debug-arm debug arm debug arm d ebug

实现stm32f103的 spwm a/d转换，屏幕显示。-it is very good for arm.a/d convert ,lcd screen.

3R3P机械臂模拟 根据标准D-H参数表建立机器人模型 可事实改变参数 ，模拟机械臂运动-3 r3p mechanical arm d-h parameters is simulated according to the standard table model robot can change parameter fact, simulate the mechanical arm movement