https://devzone.nordicsemi.com/f/nordic-q-a/86745/getting-correct-values-from-encoder-with-interruptsHello! I have to decode signals from two quadrature encoders. I know nordic has a driver for this, QDEC, however. there are a couple problems: 1. I need to control two encoders, and this driver only works with one at a time. I would have to un-initen-USTelligent Community 13Mon, 11 Apr 2022 14:40:29 GMThttps://devzone.nordicsemi.com/thread/362897?ContentTypeID=1Mon, 11 Apr 2022 14:40:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9eefa6c8-259d-4d23-8725-04c84c1deb4aSusheel Nuguru[quote user=""] I assume it is because I print out the values into the terminal every time it is triggered, and maybe it can&#39;t keep up.[/quote] <p>I think that could be the main issue here. <a href="https://devzone.nordicsemi.com/f/nordic-q-a/56061/migrate-printk-from-uart-to-rtt">Try redirecting printk to RTT</a>&nbsp; instead of UART(if you are already not doing that)</p> [quote user=""]I am expecting to get something like 2048 pulses, because that is the resolution of the encoder.[/quote] <p>So 2048 pulses per second? I am not sure if your interrupt is able to fire that fast if there are other activities happening parallel to this computation.</p> <p>Doing anything on GPIO interrupt with that frequency will consume a lot of your MCU time so there is not much the MCU can do in other contexts. This method seems very power intense.&nbsp; Maybe you can use one QDEC for one encoder and the GPIO interrupt for the other?</p><div style="clear:both;"></div>