ble scan error

[viswa]

Hi Everyone,

I'm not able to start ble scan. I've followed following example...

Developing Bluetooth Low Energy products using nRF Connect SDK

 https://www.youtube.com/watch?v=hY_tDext6zA

I was able to advertise from my custom device. Now I want to add Bluetooth Central to this project.

I have added 

CONFIG_BT_CENTRAL=y

 

 to the existing .conf file.

now coming to scan part...I have made this call in my bluetooth_init function, then I got the error as shown in screenshot. Is there any more setting I need to take care of?

and What is right way to start ble_scan?

  err = bt_le_scan_start(BT_LE_SCAN_ACTIVE,  remote_callbacks.scan_callback);   

[Simonr]

Hi

I would suggest checking out I.E. the central_uart example and specifically the scan_init function we use. Then you can add a 

bt_scan_start() function afterwards to start scanning for bluetooth-devices.

BT_SCAN_CB_INIT(scan_cb, scan_filter_match, NULL,
		scan_connecting_error, scan_connecting);

static int scan_init(void)
{
	int err;
	struct bt_scan_init_param scan_init = {
		.connect_if_match = 1,
	};

	bt_scan_init(&scan_init);
	bt_scan_cb_register(&scan_cb);

	err = bt_scan_filter_add(BT_SCAN_FILTER_TYPE_UUID, BT_UUID_NUS_SERVICE);
	if (err) {
		LOG_ERR("Scanning filters cannot be set (err %d)", err);
		return err;
	}

	err = bt_scan_filter_enable(BT_SCAN_UUID_FILTER, false);
	if (err) {
		LOG_ERR("Filters cannot be turned on (err %d)", err);
		return err;
	}

	LOG_INF("Scan module initialized");
	return err;
}

Best regards,

Simon

[viswa]

Thanks for the help Simon.

But i just had to add

CONFIG_BT_GATT_CLIENT=y

it works.