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sunlichao

1. import machine
   
2. # configure RTC.ALARM0 to be able to wake the device
   
3. rtc = machine.RTC()
   
4. rtc.irq(trigger=rtc.ALARM0, wake=machine.DEEPSLEEP)
   
5. # check if the device woke from a deep sleep
   
6. if machine.reset_cause() == machine.DEEPSLEEP_RESET:
   
7.    print('woke from a deep sleep')
   
8. # set RTC.ALARM0 to fire after 10 seconds (waking the device)
   
9. rtc.alarm(rtc.ALARM0, 10000)
   
10. # put the device to sleep
    
11. machine.deepsleep()

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