GpioCtrlRegs.GPBPUD.bit.GPIO36 = ;    // Enable pull-up for GPIO28 (SCIRXDA)//使能内部上拉

    GpioCtrlRegs.GPBPUD.bit.GPIO35 = ;       // Enable pull-up for GPIO29 (SCITXDA)//使能内部上拉

    GpioCtrlRegs.GPBQSEL1.bit.GPIO36 = ;  // Asynch input GPIO28 (SCIRXDA) //设置为异步输入模式

    GpioCtrlRegs.GPBMUX1.bit.GPIO36 = ;   // Configure GPIO28 for SCIRXDA operation  //配置为外设模式

    GpioCtrlRegs.GPBMUX1.bit.GPIO35 = ;   // Configure GPIO29 for SCITXDA operation//配置为外设模式

void scia_fifo_init()

{

    SciaRegs.SCIFFTX.all=0xE040;//使能FIFO;清除发送中断标志位；禁止FIFO发送中断；

                                //发送中断级别定义为0；

    SciaRegs.SCIFFRX.all=0x204f;//清除FIFO溢出标志位；清除溢出接受中断标志位；禁止

                                //FF接受中断；接受中断级别为16；

    SciaRegs.SCIFFCT.all=0x0;//SCITXBUF到移位寄存器传送不延迟

}

void scia_echoback_init()

{

    // Note: Clocks were turned on to the SCIA peripheral

    // in the InitSysCtrl() function

     SciaRegs.SCICCR.all =0x0007;   // 1 stop bit,  No loopback

                                   // No parity,8 char bits,

                                   // async mode, idle-line protocol

    SciaRegs.SCICTL1.all =0x0003;  // enable TX, RX, internal SCICLK,

                                   // Disable RX ERR, SLEEP, TXWAKE

    SciaRegs.SCICTL2.all =0x0003;

    SciaRegs.SCICTL2.bit.TXINTENA =;//开启接收中断

    SciaRegs.SCICTL2.bit.RXBKINTENA =;//开启发送中断

    #if (CPU_FRQ_150MHZ)

          SciaRegs.SCIHBAUD    =0x0001;  // 9600 baud @LSPCLK = 37.5MHz.

          SciaRegs.SCILBAUD    =0x00E7;

    #endif

    #if (CPU_FRQ_100MHZ)

      SciaRegs.SCIHBAUD    =0x0001;  // 9600 baud @LSPCLK = 20MHz.

      SciaRegs.SCILBAUD    =0x0044;

    #endif

    SciaRegs.SCICTL1.all =0x0023;  // Relinquish SCI from Reset

}

void scia_xmit(int a)

{

    while (SciaRegs.SCIFFTX.bit.TXFFST != ) {}

    SciaRegs.SCITXBUF=a;

}

static void Init_SCI_A(Uint32 Baud)

{

    //Init  IO

    Uint16 BRR=;

    EALLOW;

     GpioCtrlRegs.GPBPUD.bit.GPIO36 = ;    // Enable pull-up for GPIO28 (SCIRXDA)

     GpioCtrlRegs.GPBPUD.bit.GPIO35 = ;       // Enable pull-up for GPIO29 (SCITXDA)

     GpioCtrlRegs.GPBQSEL1.bit.GPIO36 = ;  // Asynch input GPIO28 (SCIRXDA)

     GpioCtrlRegs.GPBMUX1.bit.GPIO36 = ;   // Configure GPIO28 for SCIRXDA operation

     GpioCtrlRegs.GPBMUX1.bit.GPIO35 = ;   // Configure GPIO29 for SCITXDA operation

    EDIS;

    //set RX  interrput function

    EALLOW;

    PieVectTable.SCIRXINTA = &SciaRxIsr;

    EDIS;

   //set SCIA register

   SciaRegs.SCICCR.all =0x0007;   // 1 stop bit,  No loopback

                                  // No parity,8 char bits,

                                  // async mode, idle-line protocol

   SciaRegs.SCICTL1.all =0x0003;  // enable TX, RX, internal SCICLK,

                                  // Disable RX ERR, SLEEP, TXWAKE

   SciaRegs.SCICTL2.bit.TXINTENA =;//close TX interrput

   SciaRegs.SCICTL2.bit.RXBKINTENA =;

    //set Baud BRR= LSPCLK/(Baud*8)-1

   BRR = SCI_LSPCLK/(Baud*)-;

   SciaRegs.SCIHBAUD    = (BRR>>);  // 9600 baud @LSPCLK = 37.5MHz.

   SciaRegs.SCILBAUD    = (BRR&0x00ff);

//   SciaRegs.SCIHBAUD    =0x0001;  // 9600 baud @LSPCLK = 37.5MHz.

//   SciaRegs.SCILBAUD    =0x00E7;

   SciaRegs.SCICTL1.all =0x0023;     // Relinquish SCI from Reset

   EALLOW;

   //set SCI interrput Group

    PieCtrlRegs.PIECTRL.bit.ENPIE = ;   // Enable the PIE block

    PieCtrlRegs.PIEIER9.bit.INTx1=;     // PIE Group 9, int1  enable SCIA_RX

    //PieCtrlRegs.PIEIER9.bit.INTx2=1;     // PIE Group 9, INT2  enable SCIA_TX

   EDIS;

}

//send one byte data

static void scia_xmit(int a)

{

    while (SciaRegs.SCIFFTX.bit.TXFFST != ) {}

    SciaRegs.SCITXBUF=a;

}

//send string

void scia_msg(char * msg)

{

    int i;

    i = ;

    while(msg[i] != '\0')

    {

        scia_xmit(msg[i]);

        i++;

    }

}