How to use two UART in Tiva-C TM4C1294?

Hi,

I want to use two UART on TM4C1294 LaunchPad. The project is extracted from udma_demo, TivaWare. UART0 is not changed, which echoes to/from the console. UART1 is configured in loopback. Now UART1 initialization has problem on how to send data to it. From below code, the last line 

    UARTSend((uint8_t *)"\033[2JEnter text:", 16);

in fact send data to UART0, not the intended UART1.

Can you help solving this problem? Thanks,

#define UART_TXBUF_SIZE         4
#define UART_RXBUF_SIZE         4

void
InitUART1_noDMA_Transfer(void)
{
    uint_fast16_t ui16Idx;

    //
    // Fill the TX buffer with a simple data pattern.
    //
    for(ui16Idx = 0; ui16Idx < UART_TXBUF_SIZE; ui16Idx++)
    {
        g_ui8TxBuf[ui16Idx] = ui16Idx;
    }

    //
    // Enable the UART peripheral, and configure it to operate even if the CPU
    // is in sleep.
    //
    ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART1);
    ROM_SysCtlPeripheralSleepEnable(SYSCTL_PERIPH_UART1);

    //
    // Configure the UART communication parameters.
    //
    ROM_UARTConfigSetExpClk(UART1_BASE, g_ui32SysClock, 115200,
                            UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
                            UART_CONFIG_PAR_NONE);

    //
    // Set both the TX and RX trigger thresholds to 4.  This will be used by
    // the uDMA controller to signal when more data should be transferred.  The
    // uDMA TX and RX channels will be configured so that it can transfer 4
    // bytes in a burst when the UART is ready to transfer more data.
    //
    ROM_UARTFIFOLevelSet(UART1_BASE, UART_FIFO_TX1_8, UART_FIFO_RX1_8);
    //
    // Enable the UART for operation, and enable the uDMA interface for both TX
    // and RX channels.
    //
    ROM_UARTEnable(UART1_BASE);
    //
    // This register write will set the UART to operate in loopback mode.  Any
    // data sent on the TX output will be received on the RX input.
    //
    HWREG(UART1_BASE + UART_O_CTL) |= UART_CTL_LBE;


    //
    // Enable the UART DMA TX/RX interrupts.
    //
    ROM_UARTIntEnable(UART1_BASE, UART_INT_DMATX | UART_INT_DMATX);

    //
    // Enable the UART peripheral interrupts.
    //
    ROM_IntEnable(INT_UART1);
    UARTSend((uint8_t *)"\033[2JEnter text:", 16);   // ??
}