https://devzone.nordicsemi.com/f/nordic-q-a/26555/redefine-uart-pin-error-nrf52832-sdk12-1hello,everyone.we want to use pin3 and pin4 as txd and rxd,but there has error.could you give us some help? void debug_uart_init(void) { uint32_t err_code; const app_uart_comm_params_t comm_params = { 4, 3, RTS_PIN_NUMBER, CTS_PIN_NUMBER, APP_UART_FLOW_CONTROL_DISABLEDen-USTelligent Community 13Wed, 08 Nov 2017 07:43:20 GMThttps://devzone.nordicsemi.com/thread/104474?ContentTypeID=1Wed, 08 Nov 2017 07:43:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:26c157b4-c360-4c67-931d-d6aaf3f16e71Joakim Jakobsen<p>Hi jenkey.zhu!<br /> Are you using the ble_app_uart example?<br /> You should be able to use pretty much any of the GPIO&#39;s. Just make sure that the pins isn&#39;t already configured for something else. Did you make any other changes to the example?<br /> Best regards.</p><div style="clear:both;"></div>