https://devzone.nordicsemi.com/f/nordic-q-a/46213/sending-strings-from-peripheral-nrf52840-dk-to-central-android-deviceHi, I am working on a project where my mobile phone will be acting as a central device and nRF52840 DK will be acting as a peripheral device. I added the UART example to my code to see the strings Transmitted and received through TERMITE. I have alsoen-USTelligent Community 13Wed, 17 Apr 2019 11:59:29 GMThttps://devzone.nordicsemi.com/thread/182591?ContentTypeID=1Wed, 17 Apr 2019 11:59:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:18625ca0-3372-49df-8b22-9d99a59dfa51Anubhav<p>Hi,</p> <p>Thanks for the reply @Simon.</p> <p>Actually, the err_code returned by the&nbsp;uart_event_handle was giving a value 5 which means&nbsp;NRF_ERROR_NOT_FOUND.</p> <p>When I checked the ble_nus_data_send function I got to know that the&nbsp;m_conn_handle value was not correct. So I defined a new&nbsp;m_conn_handle1 and then I was able to send strings from my nRF52840 board to the nRFtoolbox app.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/182573?ContentTypeID=1Wed, 17 Apr 2019 11:00:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ff46b04e-810c-430d-98af-fd37667acda6Simon<p>Could you upload your whole project as a zipped file?</p> <p>Zip this folder:&nbsp;<em>nRF5_SDK_15.0.0_a53641a\examples\ble_xxxx\name_of_project</em></p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>