https://devzone.nordicsemi.com/f/nordic-q-a/46571/configuring-gpio-as-timer-counter-inputUsing Fanstel BT832A BT 5.0 Module which utilizes SoC nRF52810 QFAA 1) Yes or No: can I configure a GPIO as a Timer/Counter Input so I can feed a high frequency input into it and calculate the frequency? If yes, please advise on the following: Aen-USTelligent Community 13Thu, 02 May 2019 12:13:24 GMThttps://devzone.nordicsemi.com/thread/184880?ContentTypeID=1Thu, 02 May 2019 12:13:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8d1fe16e-ad6c-4b39-b392-239e607710e0Simonr<p>Hi Tim</p> <p>Sorry about the late reply, but 1st of May is a public holiday here in Norway.</p> <p>A) Any regular GPIO pin should be able to do this. Be aware that the NFC pins and GPIO pins located near the radio might not be suited for this.</p> <p>B) <a href="https://devzone.nordicsemi.com/f/nordic-q-a/12192/which-gpio-on-nrf52382-can-be-configured-as-timer">This post</a> provides an easy way to configure this, be aware that it is rather dated, so some tweaks may be necessary. <a href="https://devzone.nordicsemi.com/f/nordic-q-a/34547/ppi-configuration-to-count-pulses/133136#133136">This post</a> provides two examples that are a bit more complex on how to do this using timers or an RTC.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>