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K82 : WDOG in LLS3 mode

Question asked by Eugene Hiihtaja on Aug 27, 2018
Latest reply on Aug 27, 2018 by Kerry Zhou

Hello !


I keep K82 in LLS3 mode and wakeup periodically by using LPTIMER0.

For secure MCU execution flow and periodical wakeup, I also would like to use WDOG for reboot MCU if wakeup is not happens in time.


But even I configure WDOG for be used in Stop Mode :


config.clockSource = kWDOG_LpoClockSource; // 1ms
config.workMode.enableStop = true;


It is NOT reboot MCU if it stay in LLS3 mode long time without update.


Do I understand WDOG functionality in wrong way ?


Or may be I should use RTOS timer in parallel ( as back up timer ) for wakeup MCU if LPTIMER0 is suddenly freeze

while MCU in LLS3 mode ?


Please give advice !