https://devzone.nordicsemi.com/f/nordic-q-a/4198/nrf51822-spi-domonow i download the SDK,when i see the program that i am the first time to use the core. I want to know that how use the program DOMO to use in my product like the SPI , thanks! EDIT: formaten-USTelligent Community 13Fri, 24 Oct 2014 14:52:35 GMThttps://devzone.nordicsemi.com/thread/15000?ContentTypeID=1Fri, 24 Oct 2014 14:52:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:623a90a0-317d-425e-b20c-124fa00c63e0Stian R&#248;ed Hafskjold<p>Are you talking about the <em>demo</em> example code in the SDK, like the &#39;SPI_master_example&#39; ? And how to use it?</p> <p>You need to open the project in Keil (.uvprojx), compile it and flash it to your nRF51 device.</p><div style="clear:both;"></div>