NUS service without service discovery

[Josef80]

Hi.

I have implemented the Central and Peripheral NUS service on two devices(nRF52). Since the central knows the characteristic values, I would like to bypass service discovery to reduce the time connection. I removed the "ble_db_discovery_start" from the BLE_GAP_EVT_CONNECTED and I found the handle values of RX, TX but I don't know how can I store them in my code and how can I use them to read and write the data. I would appreciate it if you kindly help me to overcome this problem.

thanks.

[Josef80]

I solved my problem with the following solution.

void bypass_discovery(ble_nus_c_t * p_ble_nus_c)
{
     ble_nus_c_evt_t nus_c_evt;
     memset(&nus_c_evt,0,sizeof(ble_nus_c_evt_t));

    // the handle values of rx, tx, and ccd may be different in your project.
     nus_c_evt.handles.nus_rx_handle = 16;   
     nus_c_evt.handles.nus_tx_handle = 20;  
     nus_c_evt.handles.nus_tx_cccd_handle = 21;  
     nus_c_evt.conn_handle = conn_hndl;
     nus_c_evt.evt_type = BLE_NUS_C_EVT_DISCOVERY_COMPLETE;
     p_ble_nus_c->evt_handler(p_ble_nus_c, &nus_c_evt);
}

I made the following changes in the BLE_GAP_EVT_CONNECTED case under the ble_evt_handler function.

case BLE_GAP_EVT_CONNECTED:

     // err_code = ble_db_discovery_start(&m_db_disc, p_ble_evt->evt.gap_evt.conn_handle);
     //  APP_ERROR_CHECK(err_code);

        bypass_discovery(&m_ble_nus_c);