Hello ,
I think you can use RTC second interrupt function.
In the interrupt function, you define one flag ,when interrupt ,the flag++ ,
then through judge the flag to turn on different LEDs.
About the second interrupt demo , please refer to :
SDK_2.0_FRDM-KL27Z\boards\frdmkl27z\demo_apps\rtc_func
When the demo running, send 4.
Hope it helps
Have a great day,
Alice
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