sci.txt

ms320f2812的sci测试代码

#include"dsp281X_device.h"
int trans_flag;
Interrupt void scirxinta_isr(void)
main()
{
Asm("Nop");
Asm("Nop");
Initsysctrl();
DINT;
IER=0x0000;
IFR=0x0000;
InitGPIO();
InitPieCtrl();
InitPieVectTable();
Evab_Init();
Sci_Init();

ELLOW;
PievectTable.RXAINT=&Scirxinta_isr;

EDIS;
PieCtrlRegs.Pieier9.bit.INTx1=1;
IER/=M_INT9;
EINT;
ERTM;
While(1)
{
   If(trans_flag==1)
{
  Trans_flag=0;
  SciaRegs.SCITXBUF=RX;
}
}
}
Interrupt void Scirxinta_isr(void)
   {
  EINT;
  RX=SciaRegs.SCIRXBUF.bit.RXTD;
  TRANS_flag=1;
   PieCtrlRegs.PIEACK.all=PIEACK_GROUP9;
   return;
}
Void Sci_Init(void)
{
  SciaRegs.SCICCR.all=0x0067;
SciaRegs.SCICTL1.all=0x0003;
SciaRegs.SCICTL2.all=0x0002;
SciaRegs.SCILBAUD=0x0086;
//  SciaRegs.SCICCR.bit.loopbkena=1;
SciaRegs.SCICTL1.all=0x0023;
//  SciaRegs.SCIFFTX.all=0xE040;
//  SciaRegs.SCIFFRX.all=0x204f;
//  SciaRegs.SCIFFCT.all=0x0;
    return;    
}