Switching between power modes and soft reset (nRF51822)

RE: Switching between power modes and soft reset (nRF51822)

balaji — Sat, 05 Oct 2013 08:52:41 GMT

Thanks for your reply, Any sample code regarding your logic will give a clear idea to make it work on our project.

RE: Switching between power modes and soft reset (nRF51822)

balaji — Sat, 05 Oct 2013 08:41:30 GMT

Thanks for your reply. Actually i tried it in heart rate monitor source code as follows case BLE_GAP_EVT_TIMEOUT: if (p_ble_evt->evt.gap_evt.params.timeout.src == BLE_GAP_TIMEOUT_SRC_ADVERTISEMENT) { led_stop(); GPIO_WAKEUP_BUTTON_CONFIG(HR_INC_BUTTON_PIN_NO); GPIO_WAKEUP_BUTTON_CONFIG(HR_DEC_BUTTON_PIN_NO); sd_nvic_SystemReset();

//NVIC_SystemReset();  
//system_off_mode_enter();
        }
        break;

but it is not working. i am not sure what is happening here.

if you have any sample codes for switch off and switch on through application(when soft device is enabled) it will be very helpful for me.

RE: Switching between power modes and soft reset (nRF51822)

Ole Morten — Fri, 04 Oct 2013 12:43:43 GMT

In system off mode, all clocks will be turned off, and it is therefore not possible to wake up from this mode in any other way than by a GPIO or reset.

If you need to wake up after a certain time, you will have to use the RTC and system on, idle, mode. This can be done for example using the app_timer module, by just disabling the softdevice and all other peripherals that you don't need, start the timer and do sd_app_event_wait(). This should then consume 2-3 µA.

RE: Switching between power modes and soft reset (nRF51822)

Nils Minor — Fri, 04 Oct 2013 11:15:22 GMT

Hi,

yes it's possible i asked this before here is the link to my Question with an helpfull example how to do this devzone.nordicsemi.com/.../how-to-reset-the-device best regards Nils