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TMS320F2808总是进入中断USER12_ISR



写了一段程序。但总是无故进入USER12_ISR中断。只要加上这句代码dutycmp = (unsigned int)(_IQtoF(Vr));就会进入中断,注释掉就可以正常运行。有时候加一些其他的很平常的程序也会进入中断。请教一下一般会是什么原因呢?