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请教TI工程一个关于中断寄存器设置的问题



我在尝试对中断寄存器进行配置从而控制中断,但我发现,直接对中断寄存器的值进行设置时,会出现有些寄存器值可以改变(IER,ISTP等),而有些寄存器无论如何改,都一直保持原先值不变(CSR,TSR)的情况。请问这是怎么回事?

我是这么配置的: