ble peripheral awaken from deep sleep

RE: ble peripheral awaken from deep sleep

astella — Tue, 10 Mar 2020 15:09:11 GMT

To me it is relevant information in this link:

https://devzone.nordicsemi.com/f/nordic-q-a/5141/nrf51-low-energy-wake-up

RE: ble peripheral awaken from deep sleep

astella — Tue, 10 Mar 2020 10:38:17 GMT

Thank you for your kindness. I see. As you say in 'It is not possible for a device to be in deep sleep and wake on packet reception' I can understand that to be able to receive, antenna must be in the proper state. and its consumption about 5-6 mAmps.

RE: ble peripheral awaken from deep sleep

run_ar — Tue, 10 Mar 2020 10:31:03 GMT

Hi,

It is not possible for a device to be in deep sleep and wake on packet reception. The BLE protocol uses a timer to wake up when there is a connection event. The connection interval is decided by the master, but it can be negotiated by the slave. The interval has to be somewhere in the 7.5ms to 4s range, but it is possible to configure slave latency which means the slave does not wake up to receive a packet during the configured latency time.

Using a timer to wake up is a very power efficient solution, you can use our online power profiler to calculate the power consumption for different scenarios:https://devzone.nordicsemi.com/nordic/power/