arm7外部中断简要分析,对《深入浅出arm7lpc》的中断例子进行修改后的运行情况 外部中断 唤醒功能 执行中断程序（取中断程序与等待中断程序部分）

为了便于观察，我把原理图中的蜂鸣器换成了led灯，源程序请查看《深入浅出arm7lpc》-arm7 external interrupt a brief analysis of the " layman arm7lpc"　example of the modified interrupt the operation of the external interrupt wake-up interrupt program execution (get interrupt routine part of the program and wait for interrupt) to facilitate observation, I put the buzzer schematic led into the light, source code, please see " layman arm7lpc"