Enable to create a wakeup button on central multilink example

[PedroSilva3]

I'm trying to implement a wake-up button on central multilink example. I.e, i need to implement the app_button in order to wake up from sd_evt_wat() function. The problem is when I add this characteristic on buttons_init,

uint32_t err_code;

// @note: Array must be static because a pointer to it will be saved in the Button handler
//        module.
static app_button_cfg_t buttons[] =
{
    {SEND_NOTIFICATION_BUTTON_PIN, false, NRF_GPIO_PIN_PULLUP, button_event_handler},
    {BOND_DELETE_ALL_BUTTON_PIN  , false, NRF_GPIO_PIN_PULLUP, NULL},
};

APP_BUTTON_INIT(buttons, sizeof(buttons) / sizeof(buttons[0]), BUTTON_DETECTION_DELAY, false);

err_code = app_button_enable();
APP_ERROR_CHECK(err_code);

the project simple crash until reach the main function. Can anyone hellp me? I'm using S120 1.0.1 and SDK_v6.1.0_b2ece6.

Thansk in advance and i'm sorry about my english.

[PedroSilva3]

main.c

The debugger stop on operation 0xFFFFFFFE , that means MOVS R0,R0 .

I know, but I already see many of this posts, but the problem is the implementation on central device. Usually the central device is a smartphone, and in my case, i want nrf51822 works as central. Thank in advance.

[Stefan Birnir Sverrisson]

Hi Pedro

I think there should be no difference in code for the app_button if you use it for a Central or Peripheral application. Try to move the initialization of the libraries before you initialize the softdevice with ble_stack_init(), i.e. something like

int main(void)
{
			leds_init();
            APP_TIMER_INIT();
			gpiote_init();
			buttons_init();
			ble_stack_init();
			client_handling_init();
			device_manager_init();

			// Star scanning
			scan_start();
				
			for (;;)
			{
					power_manage();
			}
}

By the way, the main.c file you have attached is apparently from another project, as it does not reflect the code you have previously posted for your main function.