急！！DSP的SCI进不去中断

只看该作者 · 2017-11-23 11:47

本帖最后由 MapleSugar 于 2017-11-23 14:23 编辑

RXBUF中有数据，但是进不去中断，怎么办？求助各位大神

#include "DSP28x_Project.h"    // Device Headerfile and Examples Include File

// Prototype statements for functions found within this file.
void scib_loopback_init(void);
void scib_fifo_init(void);
void scib_xmit(int a);
void configGPIO(void);
__interrupt void SCIRXINTb_ISR(void);
__interrupt void cpu_timer0_isr(void);
// Global counts used in this example
Uint16 LoopCount=0;
Uint16 ErrorCount;
Uint16 sci_count;
Uint16 ReceiveChar;
Uint16 Char;
unsigned char Navdata[85];

void main(void)
{

      InitSysCtrl();
      configGPIO();
      DINT;
      InitPieCtrl();
      IER = 0x0000;
      IFR = 0x0000;
      InitPieVectTable();

EALLOW;
PieVectTable.TINT0 = &cpu_timer0_isr;
PieVectTable.SCIRXINTB= &SCIRXINTb_ISR;
EDIS;

InitScibGpio();
scib_fifo_init();          // Initialize the SCI FIFO
scib_loopback_init();  // Initalize SCI for digital loop back

InitCpuTimers();
ConfigCpuTimer(&CpuTimer0,90,1000000);

CpuTimer0Regs.TCR.all = 0x4000;

IER = 0x101;  // Enable CPU INT
PieCtrlRegs.PIECTRL.bit.ENPIE = 1;
PieCtrlRegs.PIEIER1.bit.INTx7 = 1;
PieCtrlRegs.PIEIER9.bit.INTx3 = 1;    // PIE Group 9, INT3 Receive Navigation information

EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM

      for(;;)
{


}

}

void scib_loopback_init()
{
      ScibRegs.SCICCR.all =0x0007; // 1 stop bit,  No loopback
                                 // No parity,8 char bits,
                                 // async mode, idle-line protocol
      ScibRegs.SCICTL1.all =0x0003;  // enable TX, RX, internal SCICLK,
                                 // Disable RX ERR, SLEEP, TXWAKE
      ScibRegs.SCICTL2.all =0x0003;
      ScibRegs.SCICTL2.bit.TXINTENA =1;
      ScibRegs.SCICTL2.bit.RXBKINTENA =1;
ScibRegs.SCIHBAUD =64>>8;
ScibRegs.SCILBAUD =64 & 0x00FF;//38400波特率

      ScibRegs.SCICCR.bit.LOOPBKENA =0; // Enable loop back
      ScibRegs.SCICTL1.all =0x0023;    // Relinquish SCI from Reset
}

void scib_xmit(int a)
{
ScibRegs.SCITXBUF=a;
}

void scib_fifo_init()
{
ScibRegs.SCIFFTX.all=0xE040;
ScibRegs.SCIFFRX.all=0x2044;
ScibRegs.SCIFFCT.all=0x0;

}

void configGPIO(void)
{
      EALLOW;

      GpioCtrlRegs.GPAMUX2.bit.GPIO20 = 0; //配置为通用I/O口
      GpioCtrlRegs.GPAMUX2.bit.GPIO21 = 0;

      GpioCtrlRegs.GPADIR.bit.GPIO20 = 1;    //作为输出I/O
      GpioCtrlRegs.GPADIR.bit.GPIO20 = 1;

      GpioDataRegs.GPADAT.bit.GPIO20 = 0;
      GpioDataRegs.GPADAT.bit.GPIO21 = 1;

      EDIS;
}

__interrupt void SCIRXINTb_ISR(void)    // SCI-B-RX  Receive Navigation
{

      int i;
      for (i=0;i<16;i++)
            Navdata = ScibRegs.SCIRXBUF.all;

      PieCtrlRegs.PIEACK.all = PIEACK_GROUP9;
}
interrupt void cpu_timer0_isr(void)
{
      ErrorCount++;
      PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
}