app is running,but jlink can not connect boardhttps://devzone.nordicsemi.com/f/nordic-q-a/5580/app-is-running-but-jlink-can-not-connect-boardIt is bad yet?but i changed Another ic(nrf51822 GFAA G3),it can be connect,so What&#39;s going on,then the new ic also jlink can not connect boarden-USTelligent Community 13Mon, 16 Feb 2015 10:16:37 GMTRE: app is running,but jlink can not connect boardhttps://devzone.nordicsemi.com/thread/19552?ContentTypeID=1Mon, 16 Feb 2015 10:16:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:651437a6-310c-401b-a9c0-08f6dafb5044Asbj&#248;rn<p>You have a custom made circuit board with a nRF51822 on it. The application is running, but you can&#39;t get Segger j-link to find it? How are you powering the nRF51822? The Segger J-link lite needs the VDD of the nRF51822 to be close to 3.3 V when programming.</p><div style="clear:both;"></div>