Advertising a group of services failed.

[scytulip]

Hi,

I tried to combine BLE HRS & UART together on nrf51822. The service initialization code is

void advertising_init(void)
{
    uint32_t      err_code;
    ble_advdata_t advdata;
	
    uint8_t       flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;

    ble_uuid_t adv_uuids[] = 
	{
		{BLE_UUID_BATTERY_SERVICE, 					BLE_UUID_TYPE_BLE},
		{BLE_UUID_HEART_RATE_SERVICE,				BLE_UUID_TYPE_BLE},		
		{BLE_UUID_DEVICE_INFORMATION_SERVICE, 		        BLE_UUID_TYPE_BLE},
		{BLE_UUID_NUS_SERVICE, 						m_nus.uuid_type}
	};

    // Build and set advertising data
    memset(&advdata, 0, sizeof(advdata));

    advdata.name_type               = BLE_ADVDATA_FULL_NAME;
    advdata.include_appearance      = true;
    advdata.flags.size              = sizeof(flags);
    advdata.flags.p_data            = &flags;
    advdata.uuids_complete.uuid_cnt = sizeof(adv_uuids) / sizeof(adv_uuids[0]);
    advdata.uuids_complete.p_uuids  = adv_uuids;

    err_code = ble_advdata_set(&advdata, &scanrsp);
    APP_ERROR_CHECK(err_code);
	
	
}

However, it failed and threw an error of NRF_ERROR_DATA_SIZE. What's wrong?

[Nikita]

There is not enough space in advertising packet to contain all your sercives UUIDs. Just send all the UUIDs in scan response packet:

void advertising_init(void)
{
    uint32_t      err_code;
    ble_advdata_t advdata;
    ble_advdata_t scanrsp;

    uint8_t       flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;

    ble_uuid_t adv_uuids[] = 
    {
        {BLE_UUID_BATTERY_SERVICE,                  BLE_UUID_TYPE_BLE},
        {BLE_UUID_HEART_RATE_SERVICE,               BLE_UUID_TYPE_BLE},     
        {BLE_UUID_DEVICE_INFORMATION_SERVICE,               BLE_UUID_TYPE_BLE},
        {BLE_UUID_NUS_SERVICE,                      m_nus.uuid_type}
    };

    // Build and set advertising data
    memset(&advdata, 0, sizeof(advdata));

    advdata.name_type               = BLE_ADVDATA_FULL_NAME;
    advdata.include_appearance      = true;
    advdata.flags.size              = sizeof(flags);
    advdata.flags.p_data            = &flags;

    memset(&scanrsp, 0, sizeof(scanrsp));

    scanrsp.uuids_complete.uuid_cnt = sizeof(adv_uuids) / sizeof(adv_uuids[0]);
    scanrsp.uuids_complete.p_uuids  = adv_uuids;

    err_code = ble_advdata_set(&advdata, &scanrsp);
    APP_ERROR_CHECK(err_code);


}