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DM8168 DSP核是通过什么机制给ARM核传送一个事件?



如题,现在视频在DSP核进行处理以后,想通过ARM核发出一个预警机制(DSP进行判断后,如果有警报则通知ARM核发出预警),请问这个DSP与ARM之间是怎么传递消息的呢?程序中该如何体现?谢谢!