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F28335 FIFO接收中断 急~帮小弟解决不胜感激!一直等~

我的想法是通过FIFO接收中断,来触发发送中断,将从PC接收到得数据,再发送到PC。

不知道为什么总是触发不了SCI的发送中断,也接收到的不到数据。

#include "DSP28x_Project.h"    

#include "string.h"

interrupt void scibTxFifoIsr(void);

interrupt void scibRxFifoIsr(void);

void scib_fifo_init(void);

char rdataB[8];    

void main(void)

{

  Uint16 i;

  InitSysCtrl();

  InitSciGpio();

  DINT;

  InitPieCtrl();

  IER = 0x0000;

  IFR = 0x0000;

  InitPieVectTable();

  EALLOW;

  PieVectTable.SCIRXINTB = &scibRxFifoIsr;

  PieVectTable.SCITXINTB = &scibTxFifoIsr;

  EDIS;  

  scib_fifo_init();  

  for(i = 0; i<8; i++)

  {

      rdataB[i] =0;

  }

  PieCtrlRegs.PIECTRL.bit.ENPIE = 1;  

  PieCtrlRegs.PIEIER9.bit.INTx3=1;    

  PieCtrlRegs.PIEIER9.bit.INTx4=1;    

  IER = 0x100;

  EINT;

  for(;;);

}

interrupt void scibTxFifoIsr(void)

{

   Uint16 i;

   for(i=0; i< 8; i++)

   {

       ScibRegs.SCITXBUF=rdataB[i];    

   }

        //ScibRegs.SCIFFTX.bit.TXFFINTCLR=1;

       PieCtrlRegs.PIEACK.all|=0x100;      

}

当我将上面的TXFFINTCLR置1的时候,就会不停的发送0,不发送rdataB数组中的内容。下面的接收中断的中断级位设为8,我的想法是PC发送一个hellodsp,触发接收中断,在接收中断服务子程序中通过strncmp函数比对,通过TXFFINTCLR置1,使发送相应中断。然后在发送中断中在发送radaB数组,即在PC串口软件端显示hellodsp。

可不知道为什么总是进步了接收中断,rdataB数组里面也没有值.....求高工解答!

interrupt void scibRxFifoIsr(void)

{

                     Uint16 i;

for(i=0;i<8;i++)

{

                      //while(ScibRegs.SCIFFRX.bit.RXFFST!=1){}

  rdataB[i]=ScibRegs.SCIRXBUF.all;

}

if(strncmp(rdataB,"hellodsp",8)==0)        

                   {

  //ScibRegs.SCIFFTX.bit.TXFIFOXRESET=1;

  ScibRegs.SCIFFTX.bit.TXFFINTCLR=1;

}

//ScibRegs.SCIFFTX.bit.TXFFINTCLR=1;

//ScibRegs.SCIFFRX.bit.RXFIFORESET=0;

//ScibRegs.SCIFFRX.bit.RXFIFORESET=1;

ScibRegs.SCIFFRX.bit.RXFFOVRCLR=1;  

ScibRegs.SCIFFRX.bit.RXFFINTCLR=1;

PieCtrlRegs.PIEACK.all|=0x100;  

}

void scib_fifo_init()

{

  ScibRegs.SCICCR.all =0x0007;    

  ScibRegs.SCICTL1.all =0x0003;  

  ScibRegs.SCICTL2.bit.TXINTENA =1;

  ScibRegs.SCICTL2.bit.RXBKINTENA =1;

  ScibRegs.SCIHBAUD    =0x0001;

  ScibRegs.SCILBAUD    =0x00E7;

  ScibRegs.SCICCR.bit.LOOPBKENA =0;

  ScibRegs.SCIFFTX.all=0xC028;  

  ScibRegs.SCIFFRX.all=0x0028;

  ScibRegs.SCIFFCT.all=0x00;

  ScibRegs.SCICTL1.all =0x0023;    

  ScibRegs.SCIFFTX.bit.TXFIFOXRESET=1;

  ScibRegs.SCIFFRX.bit.RXFIFORESET=1;

}