TM4C123GH6PM: UART0 and UART3 working OK but UART2 is not transmiting

Part Number: TM4C123GH6PM

Hello,

I am using UART0 and UART3 without any problem but when I try to send data using UART2 it doesn't work. I look at pin 10 (U2Tx) with an oscilloscope and I don't even see any voltage change or activity while data is sent.

It is strange because I configure the UART2 the same as UART0 and UART3.

Here is the UART2 initialization:

void UART2_Init(void)
{
    //
    // Enable the GPIO Peripheral used by the UART.
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);

    //
    // Enable UART2
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART2);
    // Wait for the UART2 module to be ready
    while(!ROM_SysCtlPeripheralReady(SYSCTL_PERIPH_UART2))
    {
    }

    //
    // Configure GPIO Pins for UART mode.
    //
    ROM_GPIOPinConfigure(GPIO_PD6_U2RX);
    ROM_GPIOPinConfigure(GPIO_PD7_U2TX);
    ROM_GPIOPinTypeUART(GPIO_PORTD_BASE, GPIO_PIN_6 | GPIO_PIN_7);

    //
    // Configure the UART for 115,200, 8-N-1 operation.
    //
    ROM_UARTConfigSetExpClk(UART2_BASE, SysCtlClockGet(), 115200,
                            (UART_CONFIG_PAR_NONE | UART_CONFIG_STOP_ONE |UART_CONFIG_WLEN_8)); //115200, 9600

    //
    // Enable the UART operation.
    //
    ROM_UARTEnable(UART2_BASE);

}

In main I write a character to UART2 every second to test the port but, as I said, nothing seems to be sent:

int main(void)
{

    /* Set system clock */
    ROM_SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN);

    UART0_Init();
    UART2_Init();
    UART3_Init();

    // UART2 test
    while(1){
        // Write character 'A' to UART2
        UARTCharPut(UART2_BASE, 'A');


        timer1_wait_ms(1000);  // custom function that works OK
    }
}

Am I missing something?

Thanks!