Clearing FPU interrupt causes NRF52 to reset when device reaches full battery chargehttps://devzone.nordicsemi.com/f/nordic-q-a/41533/clearing-fpu-interrupt-causes-nrf52-to-reset-when-device-reaches-full-battery-chargeHi, We have an unusual problem involving FPU interrupt clearing and battery charge state on the NRF52832. We are applying the following fix to reduce power consumption as described in NRF52 Errata Rev 2 v1.1 3.25 [87] CPU: Unexpected wake from Systemen-USTelligent Community 13Wed, 08 Jul 2020 07:25:23 GMTRE: Clearing FPU interrupt causes NRF52 to reset when device reaches full battery chargehttps://devzone.nordicsemi.com/thread/258918?ContentTypeID=1Wed, 08 Jul 2020 07:25:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b616a9d3-6650-40fb-94e9-b9e7c2d7340cSusheel Nuguru<p>Valentin, this could be something not related to this thread. Please create a new thread.</p><div style="clear:both;"></div>RE: Clearing FPU interrupt causes NRF52 to reset when device reaches full battery chargehttps://devzone.nordicsemi.com/thread/258842?ContentTypeID=1Tue, 07 Jul 2020 15:07:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:50323c3b-0335-4404-9ecd-0834f6269b79Valentin<p>Hi,<br /><br />I have the same problem : I don&#39;t clear FPU_IRQn, the nrf52832 reset and I don&#39;t find how to solve this...<br />Have you find any solution to this ?</p> <p></p> <p>Regards,</p> <p></p> <p>Valentin</p><div style="clear:both;"></div>RE: Clearing FPU interrupt causes NRF52 to reset when device reaches full battery chargehttps://devzone.nordicsemi.com/thread/161521?ContentTypeID=1Wed, 12 Dec 2018 17:30:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5739f6fd-5403-4a22-8cee-f20753af55b7Turbo J<p>Put an oscilloscope on the VCC line and look for &quot;steps&quot; &gt;= 0.3V - these would trigger POR.</p> <p>The constant 3-5mA current draw for the unhandled pending FPU interrupt may prevent the charger from turning off.</p><div style="clear:both;"></div>