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在如题的演示代码中，在主中断的LEVEL1中：
rc1和rg1共同生成一个可变的虚拟角度，理论上这个虚拟角度变化越快，是否就是转速越快？
买不起板子，只好研究一下Demo！
你好 参考一下下面帖子中的讨论
http://www.deyisupport.com/question_answer/microcontrollers/c2000/f/56/t/29245.aspx
