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1、I have no idea that what is difference of dedicated interrupt pin sys_nirq and the GPIO when it is used as a interrupt input pin?
2、Is the sys_nirq has higher priority than the GPIO when it is used as a interrupt input pin?
sys_nIRQ could be connect to a Power IC.
If the system is in sleep state then the power IC can wake it up through this pin.
But if you use it as a GPIO interrupt, the system will stay in sleep mode.
That's the idea.
Good luck.
