https://devzone.nordicsemi.com/f/nordic-q-a/16875/how-can-i-send-the-message-data-unitHello, I&#39;m south korea student in dongguk univ. and i want to know how can i send the message on my board(not use the terminal ). I use the keil uvision4.0, nrf51822, s110. and i found the function &#39;ble_nus_send_string(&amp;m_nus,(uint8_t *)stringen-USTelligent Community 13Wed, 05 Oct 2016 13:24:11 GMThttps://devzone.nordicsemi.com/thread/64648?ContentTypeID=1Wed, 05 Oct 2016 13:24:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9e68b24b-08a1-405b-ae47-d43e2960f7e1J&#248;rgen Holmefjord<p>Hi,</p> <p>The <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v12.0.0/ble_sdk_app_nus_eval.html?cp=4_0_0_4_2_2_18">Nordic UART service (NUS) example</a> demonstrates how to emulate UART over BLE and sending data. <code>ble_nus_send_string()</code> is not limited to sending data of type uint8_t, it takes a uint8_t pointer as argument. This pointer type can be looked at like a char array. You can send any data type you want over NUS by converting it to char arrays.</p> <p>If you want to send data of type uint32_t, you can convert it to char array using <a href="http://www.cplusplus.com/reference/cstdio/sprintf/">sprintf</a>, or some similar function. Data can also be sent using other defined or custom BLE services. The best method depends on what data you need to send.</p> <p>Best regards,</p> <p>Jørgen</p><div style="clear:both;"></div>