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DSP28335的外部中断

Other Parts Discussed in Thread: CONTROLSUITE

您好:

         我想使用DSP28335的外部中断,设置以后进不去外部中断服务程序,外部IO口的状态变化了,但是PIEIFR寄存器的标志位IF里相应的PieCtrlRegs.PIEIFR1.bit.INTx4不置位,当我把PieCtrlRegs.PIEIFR1.bit.INTx4手动设置为1的时候,中断服务程序就可以进去了。如果不手动设置标志位,外部中断1和外部中断2都不行,请问一下PIEIFR的标志位不置位是哪里的问题?另外有没有相应的外部中断的例程?非常感谢!