how to extend GPIO pins in NRF52https://devzone.nordicsemi.com/f/nordic-q-a/23299/how-to-extend-gpio-pins-in-nrf52hi i want to create 64 gpio pins to nrf52, can anyone give an idea how to create it.en-USTelligent Community 13Thu, 06 Jul 2017 09:00:39 GMTRE: how to extend GPIO pins in NRF52https://devzone.nordicsemi.com/thread/91617?ContentTypeID=1Thu, 06 Jul 2017 09:00:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:328258ca-c606-4047-8a99-6c874ab5452cbjorn-spockeli<p>Hi Saiteja,</p> <p>we have added an I/O expander on our Nordic Thingy:52 to increase the number of GPIOs from 32 to 48, see <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.rds/dita/rds/designs/thingy/hw_description/io_exp.html?cp=9_0_6_3">this</a> Infocenter page. Specifically, we&#39;re using the Semtech SX1509BIULTRT, <a href="https://www.digikey.com/product-detail/en/semtech-corporation/SX1509BIULTRT/SX1509BIULCT-ND/2295548">here</a> is the link to the part on Digikey.</p> <p>The firmware for the Nordic Thingy:52 can be downloaded from its product page, found <a href="https://www.nordicsemi.com/eng/Products/Nordic-Thingy-52#Downloads">here</a>. It will contain some source code showing you how to interface the SX1509BIULTRT with the nRF52832.</p> <p>Best regards</p> <p>Bjørn</p><div style="clear:both;"></div>