https://devzone.nordicsemi.com/f/nordic-q-a/4822/s120-s130-connection-procedureDear Sir, I&#39;m studying S120 and S130 soft device. However, the document inside SDK dose not explain the detail of connection procedure. I&#39;m interest in the device how to recognize advertising data and connect peripheral device. Dose there have anyen-USTelligent Community 13Wed, 17 Dec 2014 13:09:25 GMThttps://devzone.nordicsemi.com/thread/17062?ContentTypeID=1Wed, 17 Dec 2014 13:09:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c70fec09-2f0d-42d5-9226-2b955c12663ePetter Myhre<p>I&#39;m not sure what kind of detail you are after, but I think for example <a href="http://developer.nordicsemi.com/nRF51_SDK/doc/7.1.0/s120/html/a00595.html">this</a> MSC is very helpful. If you mean details on how the BLE protocol works, you should look into the documentation mentioned <a href="https://devzone.nordicsemi.com/blogs/39/nrf51822nrf51422-getting-started-and-documentation/">here</a>.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/17061?ContentTypeID=1Mon, 15 Dec 2014 13:10:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e9094e76-6341-4e71-aa67-005c14155e60Marius Heil<p>I guess your best starting point would be to start reading in the provided examples. There&#39;s an example that comes with the S130 SoftDevice if you download the archive from the website. The documentation is not structured to good to help a beginner with his first steps. Try to get the examples running and then try to figure out what each function does. You need to be clear about the event handling with the API and the abbreviations at first, so you gotta dig deep in the API doc.</p><div style="clear:both;"></div>