dsp281x_piectrl.c

TMSC320F2812串口SCI通信,SCIA,SCIB,波特率设置

//###########################################################################
//
// FILE:	DSP281x_PieCtrl.c
//
// TITLE:	DSP281x Device PIE Control Register Initialization Functions.
//
//###########################################################################

#include "DSP281x_Device.h"     // DSP281x Headerfile Include File
#include "DSP281x_Examples.h"   // DSP281x Examples Include File

//---------------------------------------------------------------------------
// InitPieCtrl: 
//---------------------------------------------------------------------------
// This function initializes the PIE control registers to a known state.
//
void InitPieCtrl(void)
{
    // Disable Interrupts at the CPU level:
    DINT;

    // Disable the PIE
    PieCtrlRegs.PIECRTL.bit.ENPIE = 0;

	// Clear all PIEIER registers:
	PieCtrlRegs.PIEIER1.all = 0;
	PieCtrlRegs.PIEIER2.all = 0;
	PieCtrlRegs.PIEIER3.all = 0;	
	PieCtrlRegs.PIEIER4.all = 0;
	PieCtrlRegs.PIEIER5.all = 0;
	PieCtrlRegs.PIEIER6.all = 0;
	PieCtrlRegs.PIEIER7.all = 0;
	PieCtrlRegs.PIEIER8.all = 0;
	PieCtrlRegs.PIEIER9.all = 0;
	PieCtrlRegs.PIEIER10.all = 0;
	PieCtrlRegs.PIEIER11.all = 0;
	PieCtrlRegs.PIEIER12.all = 0;

	// Clear all PIEIFR registers:
	PieCtrlRegs.PIEIFR1.all = 0;
	PieCtrlRegs.PIEIFR2.all = 0;
	PieCtrlRegs.PIEIFR3.all = 0;	
	PieCtrlRegs.PIEIFR4.all = 0;
	PieCtrlRegs.PIEIFR5.all = 0;
	PieCtrlRegs.PIEIFR6.all = 0;
	PieCtrlRegs.PIEIFR7.all = 0;
	PieCtrlRegs.PIEIFR8.all = 0;
	PieCtrlRegs.PIEIFR9.all = 0;
	PieCtrlRegs.PIEIFR10.all = 0;
	PieCtrlRegs.PIEIFR11.all = 0;
	PieCtrlRegs.PIEIFR12.all = 0;


}	

//---------------------------------------------------------------------------
// EnableInterrupts: 
//---------------------------------------------------------------------------
// This function enables the PIE module and CPU interrupts
//
void EnableInterrupts()
{

    //Enable the PIE
    
    PieCtrlRegs.PIECRTL.bit.ENPIE = 1;   // Enable the PIE block
    PieCtrlRegs.PIEIER1.bit.INTx4=1;     //XINT1
    PieCtrlRegs.PIEIER1.bit.INTx7=1;     //TIMER0
    PieCtrlRegs.PIEIER9.bit.INTx1=1;     //SCIA_RX
    PieCtrlRegs.PIEIER9.bit.INTx2=1;     //SCIA_TX
    PieCtrlRegs.PIEIER9.bit.INTx3=1;     //SCIB_RX
    PieCtrlRegs.PIEIER9.bit.INTx4=1;     //SCIB_TX
    PieCtrlRegs.PIEIER9.bit.INTx5=1;     //EAN0INT
    PieCtrlRegs.PIEIER9.bit.INTx6=1;     //EAN1INT
    IER = 0x0101;   
   		
	//Enables PIE to drive a pulse into the CPU,write 1 to clear 0
	PieCtrlRegs.PIEACK.all = 0xFFFF;             
	
	//Enable Interrupts at the CPU level 
    EINT;
    
}


//===========================================================================
// No more.
//===========================================================================