https://test-devzone.nordicsemi.com/f/nordic-q-a/88954/power-consumption---scanning-and-advertising-at-same-time---s140Hi, I&#39;m working on a project using BLE via s140, everything works fine until I look more seriously at the current draw of the device. Simply, my project starts a Scan which lasts X milliseconds and which repeats every 20seconds. In parallel, the deviceen-USTelligent Community 13 Non-ProductionThu, 16 Jun 2022 07:47:10 GMThttps://test-devzone.nordicsemi.com/thread/372723?ContentTypeID=1Thu, 16 Jun 2022 07:47:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0333a7f4-3426-4736-9afa-e48f4153a34euser106427<p>The lower left image is a zoom of the scan period and the lower right image is a zoom of the advertising</p><div style="clear:both;"></div>https://test-devzone.nordicsemi.com/thread/372721?ContentTypeID=1Thu, 16 Jun 2022 07:44:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:736144f5-05f3-493f-bb76-b2ef64c45ef7user106427<p>Hi, </p> <p>Sorry, I must have explained the product life cycle incorrectly.</p> <p>the product, advertise continuously. And every 20seconds it Scans for 1s.</p> <p>The diffenrece between example 1 and 2 is only on the advertising interval which is 100ms in example 1 and 3s in example 2.</p> <p>Best regards,</p> <p>Pegaze</p><div style="clear:both;"></div>https://test-devzone.nordicsemi.com/thread/372716?ContentTypeID=1Thu, 16 Jun 2022 07:33:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:34c21e16-4764-4425-b136-8c21645aa5a3user75734<p>Hi</p> <p>Is the only change you made to your project the advertising interval increase? What is it that&#39;s happening drawing the very high amount of power for ~1 second every 20-ish second in the second case? That doesn&#39;t seem to be advertising nor scanning if these are set to 1s and 3s....</p> <p>est regards,</p> <p>Simon</p><div style="clear:both;"></div>https://test-devzone.nordicsemi.com/thread/372583?ContentTypeID=1Wed, 15 Jun 2022 13:08:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:10621abb-0948-47aa-a1ab-20574bcd9a3buser106427<p>Hi Simonr,</p> <p>Thank you for your rely !</p> <p>I understand what you are suggesting and I agree with you. But, I feel like i&#39;m sleeping inbetween advertisements (11uA cf. pic 4 with adv interval = 3s).</p> <p>What I don&#39;t understand is the behavior during the Scan. Why in example 1 the device entres sleep:</p> <p><img src="https://test-devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/img3_5F00_1_5F00_100_5F00_modif.png" alt=" " /></p> <p>While we have an advertising interval of 100ms and when we increase this interval to 3000ms (therefore leaving more time to sleep) we observe an increase in consumption.</p><div style="clear:both;"></div>https://test-devzone.nordicsemi.com/thread/372551?ContentTypeID=1Wed, 15 Jun 2022 11:46:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b6334e55-0380-4431-91ff-0c4826f6846fuser75734<p>Hi</p> <p>Seems like the CPU is running idly inbetween advertisements, which is why the current is so high. When the advertising interval is this big, I think it will be better to go to sleep between advertisements so the CPU is turned off/down to reduce current consumption here.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>