nrf_delay_ms consuming too much powerhttps://devzone.nordicsemi.com/f/nordic-q-a/24632/nrf_delay_ms-consuming-too-much-powerhi, I am working on nrf52 sdk11 and s132, when I am using ble_app_uart example on my custom board I used nrf_delay_ms(10000) i.e 10 seconds when i observe current consumption is 4mA. what is the reason it is consuming too much current? but after thaten-USTelligent Community 13Thu, 24 Aug 2017 08:11:01 GMTRE: nrf_delay_ms consuming too much powerhttps://devzone.nordicsemi.com/thread/96961?ContentTypeID=1Thu, 24 Aug 2017 08:11:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2dc61c11-3831-4bfc-a4fd-4e92012512b0J&#248;rgen Holmefjord<p>Hi,</p> <p><code>nrf_delay_ms()</code> is implemented as a series of NOP instructions, meaning that the CPU active but not performing any operations. The increased current you are seeing is the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/cpu.html?cp=2_1_0_6_1#topic">CPU current</a>. In general, it is not recommended to use busy-wait for long delays. You should instead setup a timer/RTC to wake the chip after the desired time, and put the chip into system on sleep mode. This will turn off CPU, saving much power.</p> <p>Best regards,</p> <p>Jørgen</p><div style="clear:both;"></div>RE: nrf_delay_ms consuming too much powerhttps://devzone.nordicsemi.com/thread/96960?ContentTypeID=1Thu, 24 Aug 2017 08:10:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2f5fb268-cc09-4e54-ac9c-1134d1158055endnode<p>Not so much surprising i you see what&#39;s inside the function (just busy loop of <code>NOP</code> instructions;) This should never be used outside debug code, for all the rest proper (RTC based) timer with interrupt wake-up (event handler) is the way how to measure time on ARM Cortex-M SoCs...</p><div style="clear:both;"></div>