Difficulty in use of sd_power_system_off function

[danielfernandes]

Hi,

In my project, I use button for put on the microcontroller in sleep mode. I implemented one timer that when I press more of 5 second the button, the micro call sleep_mode_enter function.

This part worked how I want.

Now, I want that the microcontroller to only exit sleep mode if I press the button for more of 5 seconds but the best I got was exit when I press in button.

Can you help me with one code example?

My sleep_mode_enter function is how shown below.

static void sleep_mode_enter(void)
{
    ret_code_t err_code;
    nrf_gpio_cfg_output(11);
    uint32_t pinbutton = bsp_board_pin_to_button_idx(15);
    nrf_gpio_pin_write(11,0);
   
    err_code = bsp_indication_set(BSP_INDICATE_IDLE);
    APP_ERROR_CHECK(err_code);
    err_code = bsp_wakeup_button_enable(pinbutton);
    APP_ERROR_CHECK(err_code);
   
    err_code = sd_power_system_off();
    APP_ERROR_CHECK(err_code);
}

[Einar Thorsrud]

How will you measure the time and decide if it has been pressed long enough without waking up? The only way I can see is to wake up on the button press, measure the time between button press (wake up) and release. If the button is released before 5 seconds, then go back to sleep immediately.

[danielfernandes]

I already was thinking this solution. I only wanted ask if the SKD had some function that allowed to implement a timer for micro only awake up after de some time.
But, If not exist, this solution solves. Thanks.