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How can I wake up BLE device from power system off mode without buttons

Adavid

Dear all: recently, I follow heart rate profile to write custom BLE profile,but I also went to a number of issues. how to wake up the device when entered power system off mode via software . By the way . why the connnection will be automatically disconnected ?

Best Regards

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    It's a little unclear to me what you actually want to achive, but as Sébastien correctly points out, most SDK examples uses a GPIO to wake up from system off.

    However, if you want to wake up without a GPIO (or reset), you can not use the system off mode, and instead you should rely on using the regular WFI mode, by using for example sd_app_event_wait(). This will enable you to wake up on for example RTC events or similar.

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    It's a little unclear to me what you actually want to achive, but as Sébastien correctly points out, most SDK examples uses a GPIO to wake up from system off.

    However, if you want to wake up without a GPIO (or reset), you can not use the system off mode, and instead you should rely on using the regular WFI mode, by using for example sd_app_event_wait(). This will enable you to wake up on for example RTC events or similar.

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