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请教工程师28335关闭PWM输出的方式



我要实现,通过将输出脚置高停止PWM,我的实现方法是,直接使用强制寄存器,写2,强制拉高,仿真时,脉冲输出停止了,但输出脚不是3.3V,而是0V,与程序矛盾。不知道这样做错在哪里?