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关于AM335X的GPIO中断



我在AM335X的Technical Reference Manual中的第25章看到4组GPIO都可以作为中断,但是GPIO0--2各32个引脚,GPIO3有20个引脚,而设置GPIO为中断的寄存器为GPIO_IRQSTATUS_SET_0和GPIO_IRQSTATUS_SET_1,这2个寄存器加起来也就64位,如何对应呢?在AM335x的Technical Reference Manual 第6章中看到每个GPIOx都有对应的GPIOINTxA和GPIOxB两个中断,看上去好像每组GPIO只有2个中断,这怎么看呢?