redefine Uart pin error?（nrf52832 + sdk12.1）

[jenkey.zhu]

hello,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_DISABLED, false, UART_BAUDRATE_BAUDRATE_Baud115200//zzq };

APP_UART_FIFO_INIT( &comm_params,
                   UART_RX_BUF_SIZE,
                   UART_TX_BUF_SIZE,
                   uart_event_handle,
                    APP_IRQ_PRIORITY_LOWEST,      //  APP_IRQ_PRIORITY_LOW, zzq/9/20
                   err_code);
APP_ERROR_CHECK(err_code);

[Joakim Jakobsen]

Hi jenkey.zhu!
Are you using the ble_app_uart example?
You should be able to use pretty much any of the GPIO's. Just make sure that the pins isn't already configured for something else. Did you make any other changes to the example?
Best regards.