MSP430F2418: 关于P1口的外部中断使用问题

查阅手册得知，P1IFG位置1的条件是，对应的IE置1和GIE打开

我在程序调试中，发现没有配置对应的IE位为1，IFG接收到边沿也会置1

如上图，请问怎样才能让我没有配置IE的位 IFG就算检测到边沿也不置1

Susan Yang：

能否给出您的程序？另外请注意

Only transitions, not static levels, cause interrupts. If any PxIFGx flag becomes set during a Px interrupt service routine, or is set after the RETI instruction of a Px interrupt service routine is executed, the set PxIFGx flag generates another interrupt. This ensures that each transition is acknowledged.