Is there any possible way to sedn the data from peripheral device(nrf52832 dev kit) to nrf52840 dongle which is connected to Bluetooth-less desktop

[sagarnayakm]

Hello,

In my project, i want to send the data from the ble device nrf52832 dev kit to the nrf52840 dongle which is connected to a Bluetooth-less desktop. Some desktop doesn't have inbuilt Bluetooth and for that, i used an nrf52840 dongle with the help of nrf connect desktop app i flashed the dongle(here i don't have any example or source file, firmware flashed directly by the app), and when I connect it to desktop & scan the peripheral devices with Bluetooth low energy option in nrf connect app. even I can connect the peripheral devices.

Now the issue is how can I send the data from the nrf52832 dev kit to nrf dongle because there is no source file I couldn't add code to receive the data. i tried ble_app_blinky and ble_app_blinky_c examples to send the button state data from peripheral to central so can i use the same for nrf52832 and dongle.??

if so, using the dongle can we connect it to PC and send the data to pc.??

please let me know how can i implement this.

Thank You. 

[sagarnayakm]

Ok.

Thank you so much for your support.

[sagarnayakm]

Hello,

i can able to send the data continuously by doing like this,

int main(void)
{
    ret_code_t ret;
    static const app_usbd_config_t usbd_config = {
        .ev_state_proc = usbd_user_ev_handler,
    };

    //ret = NRF_LOG_INIT(NULL);
    //APP_ERROR_CHECK(ret);

    ret = nrf_drv_clock_init();
    APP_ERROR_CHECK(ret);

    //nrf_drv_clock_lfclk_request(NULL);
    //while(!nrf_drv_clock_lfclk_is_running())
    //{
    //    /* Just waiting */
    //}

    //ret = app_timer_init();
    //APP_ERROR_CHECK(ret);

    //ret = app_timer_create(&m_mouse_move_timer, APP_TIMER_MODE_REPEATED, mouse_move_timer_handler);
    //APP_ERROR_CHECK(ret);

    //init_bsp();

//#if NRF_CLI_ENABLED
//    init_cli();
//#endif

    ret = app_usbd_init(&usbd_config);
    APP_ERROR_CHECK(ret);

//    app_usbd_class_inst_t const * class_inst_mouse;
//#if CONFIG_HAS_MOUSE
//    class_inst_mouse = app_usbd_hid_mouse_class_inst_get(&m_app_hid_mouse);
//#else
//    class_inst_mouse = app_usbd_dummy_class_inst_get(&m_app_mouse_dummy);
//#endif
//    ret = app_usbd_class_append(class_inst_mouse);
//    APP_ERROR_CHECK(ret);

    app_usbd_class_inst_t const * class_inst_kbd;
#if CONFIG_HAS_KBD
    class_inst_kbd = app_usbd_hid_kbd_class_inst_get(&m_app_hid_kbd);
#else
    class_inst_kbd = app_usbd_dummy_class_inst_get(&m_app_kbd_dummy);
#endif
    ret = app_usbd_class_append(class_inst_kbd);
    APP_ERROR_CHECK(ret);

    NRF_LOG_INFO("USBD HID composite example started.");
    
    if (USBD_POWER_DETECTION)
    {
        ret = app_usbd_power_events_enable();
        APP_ERROR_CHECK(ret);
    }
    else
    {
        NRF_LOG_INFO("No USB power detection enabled\r\nStarting USB now");

        app_usbd_enable();
        app_usbd_start();
    }

    while (true)
    {
        counter+=1;

        nrf_delay_ms(50);

        app_usbd_hid_kbd_key_control(&m_app_hid_kbd, counter, 1);  // Press the key

        nrf_delay_ms(50);

        app_usbd_hid_kbd_key_control(&m_app_hid_kbd, counter, 0);  // Release the key

        nrf_delay_ms(50);

        if(counter==39)
        {
        counter=3;
        }

        while (app_usbd_event_queue_process())
        {
            /* Nothing to do */
        }
//#if NRF_CLI_ENABLED
//        nrf_cli_process(&m_cli_uart);
//#endif

        //UNUSED_RETURN_VALUE(NRF_LOG_PROCESS());
        /* Sleep CPU only if there was no interrupt since last loop processing */
        __WFE();
    }
}

afte this i started to add the code for ble_app_uart_c but  after adding this the first time I got 

nrf_drv_clock_init() return ERROR 133 [NRF_ERROR_MODULE_ALREADY_INITIALIZED]

 then I commented out nrf_drv_clock_init() because maybe in a soft device its initialized and i checked that with 

ret = nrf_drv_clock_init_check();
NRF_LOG_INFO("ret:%d\r\n",ret);

 it returns 1 so it is initialized then after commenting out no errors but I couldn't send the data to Notepad. 

what will be the problem.?

Thank You