How can I get Manufacturer Specific Data in central with advertising packet (sdk15 nRF52832)

[Vader]

Although I have already seen this discussion (https://devzone.nordicsemi.com/f/nordic-q-a/35183/no-idea-how-to-get-manufacturer-specific-data-in-central-side-from-advertising-packet-sdk15-nrf52832), I have no idea to use ble_advdata_search() function. If my device manufacturer data through android app named nRF Connect display like this 0x5900232034850009000000000000834F05. How can I determine length for ble_advdata_search() function?

[MartinBL]

Hi,

You can try something like this:

uint8_t * ble_advdata_manuf_data_find(const ble_data_t * p_adv_data, uint8_t * manuf_data_length)
{
    uint16_t data_offset = 0;
    *manuf_data_length = ble_advdata_search(p_adv_data->p_data,
                                         p_adv_data->len,
                                         &data_offset,
                                         BLE_GAP_AD_TYPE_MANUFACTURER_SPECIFIC_DATA);

    return &p_adv_data->p_data[data_offset];
}

....

static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
    ....

    switch (p_ble_evt->header.evt_id)
    {
        case BLE_GAP_EVT_ADV_REPORT:
            ...
            uint8_t manuf_data_len;
            uint8_t * manuf_data = ble_advdata_manuf_data_find(&p_gap_evt->params.adv_report.data, &manuf_data_len);

The function ble_advdata_manuf_data_find() will return a pointer to your manufacturer data and set manuf_data_length to the length of the data. 

[Vader]

Thank you for your kind assistance.