BLE peripheral demo wake-up

[Duy]

Dear Nordic Support,

I am using nRF52 SDK v16.0.0. I am running BLE peripheral examples. As I read from the examples, the button 1 is used for sleeping and waking the board.

However, if the board is sleeping (SYSTEM OFF), I can wake the board up by pressing any button, not just button 1. Could you please help me with the review? I don't do any modification to the code.

Thank you and best regards,

         Duy

[Amanda Hsieh]

Hi Duy, 

Which example are you running? Could you kindly provide the example name?

-Amanda H.

[Duy]

Hello Amanda,

Thank you for your reply. I am using example ble_app_gls and ble_app_hrs.

Best regards,

    Diy

[Amanda Hsieh]

In those two examples, all buttons with sense enabled will be able to wake up the chip in the bsp_init(BSP_INIT_BUTTONS). The documentation does not reflect the detail. Nice catch! Thanks. 

-Amanda H. 

[Duy]

Hi Amanda Hsieh,

Thanks for showing the problem. Got a solution for it ;) and luckily it works ;)

static void sleep_mode_enter(void)
{
    APP_ERROR_CHECK(bsp_indication_set(BSP_INDICATE_IDLE));
    
    /* Disable all timers and buttons. */
    bsp_buttons_disable();
    app_timer_stop_all();

    /* Prepare wakeup buttons. */
    APP_ERROR_CHECK(bsp_btn_ble_sleep_mode_prepare());

    /* Go to system-off mode (this function will not return; wakeup will cause a reset). */
    APP_ERROR_CHECK(sd_power_system_off());
}

Best regards,

    Duy

[Amanda Hsieh]

Please verify the answer to benefit other users. Thanks. 

-Amanda H.