https://devzone.nordicsemi.com/f/nordic-q-a/76984/nrf52805-pin-setHello, I&#39;m using nrf52805. It is confirmed that P0.04 is AIN2 and P0.05 is AIN3. Can I use this pin as UART TX,RX? What should I do to use it? Thank you.en-USTelligent Community 13Thu, 01 Jul 2021 05:12:03 GMThttps://devzone.nordicsemi.com/thread/318085?ContentTypeID=1Thu, 01 Jul 2021 05:12:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5f7d68e7-45ce-43fd-b651-76b13074d27cEugene Yu<p>Yep. this is enough configuration if other drivers are not using the GPIOs.</p> <p></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/318082?ContentTypeID=1Thu, 01 Jul 2021 04:48:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7a661297-941e-408e-9141-7061f0818533mjr<p>Thank you Eugene YU,</p> <p>uart_init()</p> <p>{ \<br />&nbsp; .RX_pin_no = 5, \<br />&nbsp; .TX_pin_no = 4, \<br />&nbsp; .RTS_pin_no = 255, \<br />&nbsp; .CTS_pin_no = 255, \<br />&nbsp; .BaudRate = NRF_UART_BAUDRATE_115200, \<br />&nbsp; .FlowCtrl = NRF_UART_HWFC_DISABLED, \<br />&nbsp; .ParityBit = NRF_UART_PARITY_EXCLUDED, \<br />}</p> <p><span>I set it up.</span><br /><span></span><br /><span>Is this all I have to do?</span><br /><span></span><br /><span>I don&#39;t do the action.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/318080?ContentTypeID=1Thu, 01 Jul 2021 04:35:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d9bb15bd-b395-4523-ae6d-772785810dd4Eugene Yu<p>Hello mjr,</p> <p></p> <p>Yes, you can use the pins as UART by just configuring GPIO.</p> <p>You just need to put these GPIO numbers in the UART configuration.</p><div style="clear:both;"></div>