WakeUp using Bluetooth Event and Self Wake Up timer(NRF52832)

[NileshK]

HI All,

We are using NRF52832 for our project.

1) Can we wake up the NRF52832 chip from sleep mode using Bluetooth Event?

2) Can we wake up the NRF52832 chip from sleep mode using Self Wake Up Time or similar way?

Please send some example/sample code if anyone is having it.

We are able to wake up NRF52832 from sleep mode using GPIO pins.

Regards,

[Karl Ylvisaker]

Hello,

1) Can we wake up the NRF52832 chip from sleep mode using Bluetooth Event?

Are you referring to SYSTEM_ON or SYSTEM_OFF sleep?

In case of SYSTEM_ON, the SoftDevice already does this for you - you can see how this is done in the ble_peripheral examples in the SDK. When the device is idle it enters into SYSTEM_ON sleep, until it is woken by any generated event - such as from a peripheral or the SoftDevice.

In case of SYSTEM_OFF, it is not possible to wake the device from SYSTEM_OFF sleep using Bluetooth events require the SoftDevice to be active, and the Radio to be available, and neither of this is the case when the device is in SYSTEM_OFF sleep. The only way to wake the device from SYSTEM_OFF sleep is through an external interrupt, external to the nRF52832 SoC.

Best regards,
Karl

[NileshK]

HI Karl,

I was referring SYSTEM_OFF sleep.

I will try SYSTEM_ON mode for waking up using Bluetooth event.

Thank you.

[Karl Ylvisaker]

NileshK said:

I was referring SYSTEM_OFF sleep.

Thank you for clarifying.

NileshK said:

I will try SYSTEM_ON mode for waking up using Bluetooth event.

Great! If you are using the power management library the device will wake up off itself whenever a Bluetooth event is upcoming (like an upcoming advertising or connection event).
You can read more about the SYSTEM_OFF and SYSTEM_ON sleep modes here.

Best regards,
Karl