how to send the data to ble_app using usb dongle nrf52840

[ps_anu]

how to send the data to ble_app_uart , i used this line 

  ret = ble_nus_data_send(&m_nus,"hwllo",25,m_conn_handle);
but i am not receiving any data in ble_app

[Jørgen Holmefjord]

It would be helpful if you could answer all the questions, and not just one of them. As stated before, the dongle is not intended for development, exactly for reasons like this that you do not have a built-in debug interface.

Can you describe exactly what is failing, and where? Which pins do you use for I2C/TWI?

[sagarnayakm]

Hello,

I have only one doubt here, without using the nrf52840 dongle, can we use a third-party dongle and connect our peripheral devices and send data from the peripheral to the dongle? 

if yes, please let me know which dongle is suitable for receiving the data from a peripheral.

Thank You