I'm working on a custom board that includes an STM32F411 for power management. The firmware running on the STM is responsible for putting the system to sleep. The issue I'm having is that the STM is not entering STOP mode on some boards- or rather waking up right after being told to enter stop mode. I've reduced my firmware to just a very basic sleep/wakeup/flash LED task and am still seeing the same issue on the problem boards.
Could someone help with how to further debug this issue?
