nrf52 DK board system ON sleep enter and wakeup

RE: nrf52 DK board system ON sleep enter and wakeup

man — Mon, 01 Feb 2021 05:43:57 GMT

I have manage to put the device into system on mode , the problem was somewhere , NRF_LOG_INFO was printing continuously . So after disabling log info and ble advertisement , device enters into system on mode and wakeup is configured based on app_timer expiration or any other interrupt event .

RE: nrf52 DK board system ON sleep enter and wakeup

Simonr — Thu, 28 Jan 2021 13:58:52 GMT

In most of our examples, most noteworthy the Power Profiling application perhaps, you can see that the main loop calles the idle_state_handle() function. This function again calls the nrf_pwr_mgmt_run(); function which checks if the SoftDevice is enabled, and prepares the SoC to go to sleep before actually putting it to sleep. I would suggest you use this function as reference to put your device to sleep as well.

Best regards,

Simon

RE: nrf52 DK board system ON sleep enter and wakeup

man — Thu, 28 Jan 2021 11:03:56 GMT

One more observation

If disable softdevice as below ,

sd_ble_gap_disconnect(m_adv_handle,BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
sd_ble_gap_adv_stop(m_adv_handle);
ret_code_t err_code;
err_code = nrf_sdh_disable_request();
APP_ERROR_CHECK(err_code);

then device enters into system on mode , but how do we reconfigure and enable softdevice and start advertising again ??