https://devzone.nordicsemi.com/f/nordic-q-a/10163/system-off-mode-in-nrf51822hello everyone, I was trying to turn off nrf51822 on some condition. So i thought i will use systemoff mode register to do that.i am attaching code snippet of what i am doing. If nrf51822 is turned off where to check if it is turned off because evenen-USTelligent Community 13Tue, 10 Nov 2015 05:25:30 GMThttps://devzone.nordicsemi.com/thread/37696?ContentTypeID=1Tue, 10 Nov 2015 05:25:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3b2c7286-b043-4ae5-8f14-033d7b5bc77cSusheel Nuguru<p>Writing to a RAM variable &quot;bing&quot; will not make the chip go to system off. You have to write to Power register</p> <pre><code>NRF_POWER-&gt;SYSTEMOFF = POWER_SYSTEMOFF_SYSTEMOFF_Enter &lt;&lt; POWER_SYSTEMOFF_SYSTEMOFF_Pos; </code></pre> <p>If you want to debug your application it is wise to keep while(1) after this . To know more read about simulated system off in debug mode.</p><div style="clear:both;"></div>