https://devzone.nordicsemi.com/f/nordic-q-a/51463/how-to-send-string-message-from-nrf52840-to-raspberry-piHi. I just wonder how can I send string message through ble. I will use raspberrypi as server. You can check whole code below. It works well with computer bluetooth comunication based on windows. but I don&#39;t know which example I should use whenen-USTelligent Community 13Thu, 29 Aug 2019 08:57:08 GMThttps://devzone.nordicsemi.com/thread/206799?ContentTypeID=1Thu, 29 Aug 2019 08:57:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6effa7b3-6e7a-49ad-aed2-ebe3799ec244Duy<p>Glad to hear that. If you don&#39;t mind posting the solutions hear and mark it as the answer for others to refer.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/206796?ContentTypeID=1Thu, 29 Aug 2019 08:56:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4fae3cc9-1851-40d3-9e63-d96da1220f64Duy<p>Happy to hear you have solved it. Normally we have to read the document carefully. Even I still have some mistakes for not reading the document carefully.</p> <p>This page contains lots of things you need:&nbsp;<a href="https://infocenter.nordicsemi.com/index.jsp">https://infocenter.nordicsemi.com/index.jsp</a></p> <p>Also this:&nbsp;<a href="https://developer.nordicsemi.com/">https://developer.nordicsemi.com/</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/206711?ContentTypeID=1Wed, 28 Aug 2019 17:35:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:51fd35ef-2dd5-4ef8-acd7-ae7a320c99c4awneil[quote userid="82871" url="~/f/nordic-q-a/51463/how-to-send-string-message-from-nrf52840-to-raspberry-pi/206701"] I solved it[/quote] <p>For the benefit of others who may come here with similar problems, please explain what was the problem, and how you solved it.</p> <p></p> <p><img alt=" " src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/6327._5F00_Insert-Code-_2D00_-Nordic-2.png" /></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/206701?ContentTypeID=1Wed, 28 Aug 2019 15:52:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7cad719b-5708-43e0-ad50-0fd7e389bc9fzester926<p>Sorry!! I solved it!</p> <p>Very thank you for helping me!!!!!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/206618?ContentTypeID=1Wed, 28 Aug 2019 12:16:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8ca29bea-01a5-46ff-8b17-7967d0f42c2czester926<p>Hello Duy, thank you for replying!</p> <p>As you mentioned, I used ble_peripheral\ble_app_uart.</p> <p>It is built and run very well, but there was one problem.</p> <p>To put the message via UART, I run the putty and toggle the keyboard but, I can&#39;t type anything.</p> <p>I don&#39;t know why I can&#39;t put any message. Is there any problems in the code?</p> <p>Like, the absence of the code which can enable putting the message.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/206449?ContentTypeID=1Tue, 27 Aug 2019 16:40:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:de3f1b0a-5468-4f66-8723-7448fc8bb06dDuy<p>Hello zester926,</p> <p>You can try this example to send a string from nRF52840 to Raspberry Pi:&nbsp;<strong>examples\ble_peripheral\ble_app_uart</strong>.</p> <p>However, if you want to send more than 23 bytes, you should edit this in file&nbsp;<strong>ble_gatt.h</strong>:</p> <p>#define BLE_GATT_ATT_MTU_DEFAULT&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 23&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; /* Change this to 247 */</p> <p></p> <p>This is one of many ways, you can spend more time researching.</p> <p>Best regards,</p> <p>&nbsp; &nbsp; Duy</p><div style="clear:both;"></div>