nRF SDK version 13.1 central ble_uart_c not working

[menboong]

I want to connect remocon and nrfboard. And see the value of the remote control as uart.

so I try to connect remocon and nrf85832 to use SDK 13.1 example.

I use central ble_uart_c code.

I change NUS_BASE_UUID, BLE_UUID_NUS_SERVICE, BLE_UUID_NUS_RX_CHARACTERSTIC, BLE_UUID_NUS_TX_CHARACTERISTIC.

but it doesn't work.. how can I solve this?

plz help me..

[Kenneth]

Have you tried to use the nRF Connect for Mobile app and see if you are able to connect and discover the services and characteristics on the remote control? Then you can also read out the exact UUID's you need for the central example to use.

Does the ble_uart_c example even connect?

Kenneth

[menboong]

I already connect nRF Connect and remote control. This photo show remote control uuid.

when I upload v13.1 ble_uart_c to nrf and try to connect with remote control. but it doesn't connect between remote and nrfboard.

[Kenneth]

The ble app uart central will only connect with a peer that have the specific UUID in the advertisment packet, ref (snippet from code):

static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
    ret_code_t            err_code;
    ble_gap_evt_t const * p_gap_evt = &p_ble_evt->evt.gap_evt;

    switch (p_ble_evt->header.evt_id)
    {
        case BLE_GAP_EVT_ADV_REPORT:
        {
            ble_gap_evt_adv_report_t const * p_adv_report = &p_gap_evt->params.adv_report;

            if (is_uuid_present(&m_nus_uuid, p_adv_report))
            {

                err_code = sd_ble_gap_connect(&p_adv_report->peer_addr,
                                              &m_scan_params,
                                              &m_connection_param,
                                              APP_BLE_CONN_CFG_TAG);
...
...
}

Likely you need to look at the advertisment packet of the remote control to check if it contain this data or if you need to change the 'if (is_uuid_present(&m_nus_uuid, p_adv_report))' check.

[menboong]

I solved the problem by changing the version from 13 to 17. Thanks for help!!