seed2812的pwm检测程序，用于seed2812测试ev模块输出基本pwm波程序-seed2812 the pwm test program for testing ev seed2812 basic pwm wave program module output

事件捕获试验。对TMS320C2812中事件管理模块EV单元编程，通过改变输出波形，控制步进电机转向和转速。-Event capture test. Management module on the TMS320C2812 EV unit in the event program, by changing the output waveform to control the stepper motor steering and speed.