Not able to use Short name find function

[Sylvain]

Hello,

I don't understand why the ble_advdata_short_name_find function never return a true value. I'm sure that I send a short name because I verified this on the nRF connect app and the short name length is 10 so I think that all parameters are good.

When I send a full name the function ble_advdata_name_find works fine.

So, Is the ble_advdata_short_name_find function is well writed ? I don't understand why it doesn't work.

/**@brief Function for handling the advertising report BLE event.
 *
 * @param[in] p_adv_report  Advertising report from the SoftDevice.
 */
static void on_adv_report(ble_gap_evt_adv_report_t const * p_adv_report)
{
    ret_code_t err_code;
      
    NRF_LOG_INFO("Packet received");
      
    if (ble_advdata_short_name_find(p_adv_report->data.p_data,
                                    p_adv_report->data.len,
                                    DEVICE_NAME,5))
    {
        NRF_LOG_INFO("Device short name found");
        
        err_code = sd_ble_gap_scan_start(NULL, &m_scan_buffer);
        APP_ERROR_CHECK(err_code);
    }

    if (ble_advdata_name_find(p_adv_report->data.p_data,
                              p_adv_report->data.len,
                              m_target_periph_name))
    {
        NRF_LOG_INFO("Device name found");
        err_code = sd_ble_gap_scan_start(NULL, &m_scan_buffer);
        APP_ERROR_CHECK(err_code);
    }
    else
    {
        err_code = sd_ble_gap_scan_start(NULL, &m_scan_buffer);
        APP_ERROR_CHECK(err_code);
    }
}

Sincerely,

Sylvain.

[Einar Thorsrud]

Hi,

I do not see any issue with the way you call ble_advdata_short_name_find(). What is the length of the normal advertising name (not the short name)? The reason I ask is the following note from the API documentation:

If the shortened name in the Advertising data has the same length as the target name, this function will return false, since this means that the complete name is actually longer, thus different than the target name.

[Sylvain]

I don't have a normal advertising name. I encode my name (short name) then I specify that my name is a short local name with the flag in my advertising data ...

[Einar Thorsrud]

I see. Then the only reason I can think of is the string you pass to ble_advdata_short_name_find is of same length or longer than the short name. Is that the case? If so, it would not meet the criteria on line 682 in ble_advdata.c (SDK 15.0.0).

[vishal]

Hi,
Did you solve your problem we got same problem.. 
I am using ble_advdata_short_name_find but not getting true value... for more details see Here

Thanks