Increased power consumption due to FPU even with FPU interrupt handlinghttps://devzone.nordicsemi.com/f/nordic-q-a/75045/increased-power-consumption-due-to-fpu-even-with-fpu-interrupt-handlingHi all, I am calling arm_rfft_fast_f32 which uses the FPU on the nRF52840. Unfortunately when I disconnect from BLE connection and stop advertising, the consumption remain around ~600 uA, while if this function is not used the consumption decreaseen-USTelligent Community 13Wed, 12 May 2021 11:33:59 GMTRE: Increased power consumption due to FPU even with FPU interrupt handlinghttps://devzone.nordicsemi.com/thread/309464?ContentTypeID=1Wed, 12 May 2021 11:33:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3512ea84-5913-40c9-a3a1-10fee49ab716Vidar Berg<p>Hello,</p> <p>The system will never enter sleep if the interrupt is not being properly cleared, so I&#39;m not sure if this could be related to the FPU. Is the 600uA measured as an average across multiple wake-up and sleep cycles, or does 600 uA become the new floor/base current after <code>arm_rfft_fast_f32</code>&nbsp; is completed? Maybe you could share a minimal version of your project so I can try to replicate it here?</p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>