I have been experimenting with putting the le1 to sleep. My goal is to put it in a deep a sleep as possible and have it wake up on its own at a specified interval. I have tried setting the maximum time for the watchdog and letting it reset, but this does not appear to work in any mode other than active. I have only been able to get it to sleep in pwr_clk_mgmt_enter_pwr_mode_memory_ret_tmr_on mode and waking up on rtc2 TICK, but I can only seem to get a tick interval of 2 seconds max. I can also wake up from standby from an RFIRQ, but standby uses more current than I'd like for my battery powered device.
Am I missing any other options or using what I described incorrectly? A full reset would be fine for my purposes if it coincided with a relatively long sleep time.