[参考译文] 当发送数据时、SCI (RX 缓冲器)崩溃、并设置为0、其波特率与控制器中定义的波特率不同

void init_RS232()
{

    SciaRegs.SCICCR.all = 0b00000111; //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 = 0;
    SciaRegs.SCICTL2.bit.RXBKINTENA = 1;

    SciaRegs.SCIHBAUD = 0x0000;  // 9600 baud @LSPCLK = 15MHz(60 MHz SYSCLK)
    SciaRegs.SCILBAUD = 0x00C2;

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

    EALLOW;
    PieVectTable.SCIRXINTA = &Interrupt_SCIa_parameterizationPORT_Isr;
    EDIS;

    PieCtrlRegs.PIECTRL.bit.ENPIE = 1;   // Enable the PIE block
    PieCtrlRegs.PIEIER9.bit.INTx1 = 1;     // PIE Group 9, INT1
    IER = 0x101;
    EINT;
}






void
InitSciaGpio()
{
   EALLOW;

//
// Enable internal pull-up for the selected pins
// Pull-ups can be enabled or disabled disabled by the user.
// This will enable the pullups for the specified pins.
//
    GpioCtrlRegs.GPAPUD.bit.GPIO28 = 0; // Enable pull-up for GPIO28 (SCIRXDA)
//  GpioCtrlRegs.GPAPUD.bit.GPIO7 = 0;   // Enable pull-up for GPIO7 (SCIRXDA)

    GpioCtrlRegs.GPAPUD.bit.GPIO29 = 0; // Enable pull-up for GPIO29 (SCITXDA)
//  GpioCtrlRegs.GPAPUD.bit.GPIO12 = 0;  // Enable pull-up for GPIO12 (SCITXDA)

//
// Set qualification for selected pins to asynch only
// Inputs are synchronized to SYSCLKOUT by default.
// This will select asynch (no qualification) for the selected pins.
//
    GpioCtrlRegs.GPAQSEL2.bit.GPIO28 = 3;  // Asynch input GPIO28 (SCIRXDA)
//  GpioCtrlRegs.GPAQSEL1.bit.GPIO7 = 3;   // Asynch input GPIO7 (SCIRXDA)

//
// Configure SCI-A pins using GPIO regs
// This specifies which of the possible GPIO pins will be SCI functional pins.
//
    GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 1;    // Configure GPIO28 for SCIRXDA
//  GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 2;     // Configure GPIO7 for SCIRXDA
    GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 1;    // Configure GPIO29 for SCITXDA
//  GpioCtrlRegs.GPAMUX1.bit.GPIO12 = 2;    // Configure GPIO12 for SCITXDA

    EDIS;
}