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What can prevent entering STOP mode? (STM32WB)
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2023-06-06 03:18 AM
After some activity using BLE in the background and UART as well as some EXTI on application side, the consumption jumps from 2,4µA to 4mA, so obviously I have a wakelock. If I hotplug to the system afterwards, I can see in PWR_EXTSCR that Stop mode is no longer actually reached (C1STOPF is not set). But checking ISPR I can not see any pending ISRS (the one after Stop is the LPTIM of my OS).
What else can prevent the CPU from entering stop? Which registers should I check?
Labels:
- Labels:
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BLE
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GPIO-EXTI
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LPTIM
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Power
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STM32WB series
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UART-USART
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