how to use WDT when it going to memory retention ，timer on model（nRF24LE1)）

[alex]

the application need the nRF24LE1 to go to memory retention sleep model for more than 2s，and we know that RTC can only timer for 2s.i used WDT to do this job , but there is a problem ,that is the chip did not run after sevral time running, so please help me solve this problem.

[Hung Bui]

By saying "the chip did not run" you meant the chip simply stays in memory retention mode and never wake up? This mean the WDT didn't fire ? Or it's something else ?

Is it issue easy to reproduce ? Can you provide some simplified code that reproduces it?